How Is Two Septic Tank Design?

  • Septic tanks are designed to have a division between two sections, with the first compartment being twice the size of the second. Most of the sludge stays in the first tank or section, while sewage undergoes further treatment to remove residual solid matter in the second tank or section.

Can there be 2 septic tanks?

Yes, and the reason a second tank and drainfield is necessary usually has nothing to do with providing additional gallons of tank capacity. We see homes with two septic tanks most often at the long, narrow ranch style homes of the mid-20th century–with one system located near each end.

How does a 2 tank septic system work?

Septic tanks work by allowing waste to separate into three layers: solids, effluent and scum (see illustration above). The solids settle to the bottom, where microorganisms decompose them. The middle layer of effluent exits the tank and travels through underground perforated pipes into the drainage field.

What is the advantage of a 2 compartment septic tank?

Two-compartment tanks are a cost-saving option, if you are installing a new tank. Access risers are installed on the septic tank. They help owners and inspectors easily locate the tank, and they provide access for maintenance and repair. They also avoid the need to repeatedly dig up the lawn for routine inspections.

What is a 2 compartment septic tank?

A dual compartment septic tank has two compartments. The first is usually longer, about twice as large as the second compartment. One of the disadvantages is that a dual compartment septic tank needed to be pumped more frequently.

Do all septic tanks have two compartments?

Most septic tanks have one or two compartments. Two compartment tanks, or two single compartment tanks in series, provide better settling of the solids. Each septic tank has an inspection port over each baffle as well as a manhole access port. The manhole lid needs to be accessed for the tank to be pumped.

How do I connect two septic tanks together?

Use a 4-inch pipe to connect the two septic tanks. Place this pipe into the inlet hole of your new septic tank before you lower it into the ground. After you’ve lowered your new septic tank, insert the other end of the pipe into your old septic tank’s outlet hole.

What are the 3 types of septic systems?

Types of Septic Systems

  • Septic Tank.
  • Conventional System.
  • Chamber System.
  • Drip Distribution System.
  • Aerobic Treatment Unit.
  • Mound Systems.
  • Recirculating Sand Filter System.
  • Evapotranspiration System.

What are the signs that your septic tank is full?

Here are some of the most common warning signs that you have a full septic tank:

  • Your Drains Are Taking Forever.
  • Standing Water Over Your Septic Tank.
  • Bad Smells Coming From Your Yard.
  • You Hear Gurgling Water.
  • You Have A Sewage Backup.
  • How often should you empty your septic tank?

Does shower water go into septic tank?

From your house to the tank: Most, but not all, septic systems operate via gravity to the septic tank. Each time a toilet is flushed, water is turned on or you take a shower, the water and waste flows via gravity through the plumbing system in your house and ends up in the septic tank.

What is the number of compartment required for the septic tank?

2. The tank should be divided into two compartments. The first should be twice as big as the second. There is hole in the separating wall which allows liquid to flow through but not scum or sludge.

Can you have a septic tank without a leach field?

The waste from most septic tanks flows to a soakaway system or a drainage field. If your septic tank doesn’t have a drainage field or soakaway system, the waste water will instead flow through a sealed pipe and empty straight into a ditch or a local water course.

How often do you pump a 1000 gallon septic tank?

But here are some general guidelines: Family of 2, 500-gallon tank – pump every 2.5 years. Family of 3, 1000-gallon tank – pump every 4 years. Family of 5, 1000-gallon tank – pump every 2 years.

How big of a septic tank do I need?

The larger your home, the larger the septic tank you’re going to need. For instance, a house smaller than 1,500 square feet usually requires a 750 to 1,000-gallon tank. On the other hand, a bigger home of approximately 2,500 square feet will need a bigger tank, more than the 1,000-gallon range.

Types of Septic Systems

Septic system design and size can differ significantly from one neighborhood to the next, as well as throughout the country, due to a variety of variables. Household size, soil type, slope of the site, lot size, closeness to sensitive water bodies, weather conditions, and even municipal ordinances are all considerations to take into consideration. The following are 10 of the most often encountered septic system configurations. It should be noted that this is not an exhaustive list; there are several additional types of septic systems.

  • Septic Tank, Conventional System, Chamber System, Drip Distribution System, Aerobic Treatment Unit, Mound Systems, Recirculating Sand Filter System, Evapotranspiration System, Constructed Wetland System, Cluster / Community System, etc.

Septic Tank

This tank is underground and waterproof, and it was designed and built specifically for receiving and partially treating raw home sanitary wastewater. Generally speaking, heavy materials settle at or near the bottom of the tank, whereas greases and lighter solids float to the surface. The sediments are retained in the tank, while the wastewater is sent to the drainfield for further treatment and dispersion once it has been treated.

Conventional System

Septic tanks and trench or bed subsurface wastewater infiltration systems are two types of decentralized wastewater treatment systems (drainfield). When it comes to single-family homes and small businesses, a traditional septic system is the most common type of system. For decades, people have used a gravel/stone drainfield as a method of water drainage. The term is derived from the process of constructing the drainfield. A short underground trench made of stone or gravel collects wastewater from the septic tank in this configuration, which is commonly used.

Effluent filters through the stone and is further cleaned by microorganisms once it reaches the soil below the gravel/stone trench, which is located below the trench.

Chamber System

Gravelless drainfields have been regularly utilized in various states for more than 30 years and have evolved into a standard technology that has mostly replaced gravel systems. Various configurations are possible, including open-bottom chambers, pipe that has been clothed, and synthetic materials such as expanded polystyrene media. Gravelless systems can be constructed entirely of recycled materials, resulting in considerable reductions in carbon dioxide emissions during their lifetime. The chamber system is a type of gravelless system that can be used as an example.

The key advantage of the chamber system is the enhanced simplicity with which it can be delivered and built.

This sort of system is made up of a number of chambers that are connected to one another.

Wastewater is transported from the septic tank to the chambers through pipes. The wastewater comes into touch with the earth when it is contained within the chambers. The wastewater is treated by microbes that live on or near the soil.

Drip Distribution System

An effluent dispersal system such as the drip distribution system may be employed in a variety of drainfield configurations and is very versatile. In comparison to other distribution systems, the drip distribution system does not require a vast mound of dirt because the drip laterals are only placed into the top 6 to 12 inches of soil. In addition to requiring a big dosage tank after the sewage treatment plant to handle scheduled dose delivery of wastewater to drip absorption areas, the drip distribution system has one major disadvantage: it is more expensive.

Aerobic Treatment Unit

Aerobic Treatment Units (ATUs) are small-scale wastewater treatment facilities that employ many of the same procedures as a municipal sewage plant. An aerobic system adds oxygen to the treatment tank using a pump. When there is an increase in oxygen in the system, there is an increase in natural bacterial activity, which then offers extra treatment for nutrients in the effluent. It is possible that certain aerobic systems may additionally include a pretreatment tank as well as a final treatment tank that will include disinfection in order to further lower pathogen levels.

ATUs should be maintained on a regular basis during their service life.

Mound Systems

Unlike a municipal sewage plant, Aerobic Treatment Units (ATUs) employ many of the same procedures as that facility. When oxygen is introduced into the treatment tank, the system is known as an aerobic system. Due to the increased natural bacterial activity inside the system, the system is able to provide extra treatment for nutrients in the effluent as a result. It is possible that certain aerobic systems will additionally include a pretreatment tank as well as a final treatment tank that will include disinfection in order to further lower the pathogen levels.

ATUs should be subjected to routine life-cycle maintenance.

Recirculating Sand Filter System

Sand filter systems can be built either above or below ground, depending on the use. The effluent is discharged from the septic tank into a pump compartment. Afterwards, it is pushed into the sand filter. The sand filter is often made of PVC or a concrete box that is filled with a sand-like substance. The effluent is pushed through the pipes at the top of the filter under low pressure to the drain. As the effluent exits the pipelines, it is treated as it passes through the sand filtering system.

However, sand filters are more costly than a standard septic system because they provide a higher level of nutrient treatment and are thus better suited for areas with high water tables or that are adjacent to bodies of water.

Evapotranspiration System

Evaporative cooling systems feature drainfields that are one-of-a-kind. It is necessary to line the drainfield at the base of the evapotranspiration system with a waterproof material. Following the entry of the effluent into the drainfield, it evaporates into the atmosphere. At the same time, the sewage never filters into the soil and never enters groundwater, unlike other septic system designs. It is only in particular climatic circumstances that evapotranspiration systems are effective. The environment must be desert, with plenty of heat and sunshine, and no precipitation.

Constructed Wetland System

Construction of a manufactured wetland is intended to simulate the treatment processes that occur in natural wetland areas. Wastewater goes from the septic tank and into the wetland cell, where it is treated. Afterwards, the wastewater goes into the media, where it is cleaned by microorganisms, plants, and other media that eliminate pathogens and nutrients. Typically, a wetland cell is constructed with an impermeable liner, gravel and sand fill, and the necessary wetland plants, all of which must be capable of withstanding the constant saturation of the surrounding environment.

As wastewater travels through the wetland, it may escape the wetland and flow onto a drainfield, where it will undergo more wastewater treatment before being absorbed into the soil by bacteria.

Cluster / Community System

Construction of a manmade wetland is designed to imitate the treatment processes that occur naturally in wetland areas. Wastewater is discharged from the septic tank into the wetland cell. Afterwards, the wastewater goes into the media, where it is cleaned by microorganisms, plants, and other media, which remove pathogens and nutrients. The wetland cell is normally comprised of an impermeable liner, gravel and sand fill, and the required wetland plants, all of which must be able to thrive in a constantly flooded environment in order to function properly.

In other cases, wastewater may depart the wetland and flow onto a drainfield, where it will be treated further before being absorbed into the soil.

How Your Septic System Works

Underground wastewater treatment facilities, known as septic systems, are often employed in rural regions where there are no centralized sewage lines. They clean wastewater from residential plumbing, such as that produced by bathrooms, kitchen drains, and laundry, by combining natural processes with well-established technology. A conventional septic system is comprised of two components: a septic tank and a drainfield, often known as a soil absorption field. It is the septic tank’s job to decompose organic matter and to remove floatable stuff (such as oils and grease) and solids from wastewater.

Alternate treatment systems rely on pumps or gravity to assist septic tank effluent in trickling through a variety of media such as sand, organic matter (e.g., peat and sawdust), constructed wetlands, or other media to remove or neutralize pollutants such as pathogens that cause disease, nitrogen, phosphorus, and other contaminants.

Prior to discharging wastewater into the environment, several alternative systems are designed to evaporate or disinfect the effluent.

Specifically, this is how a typical conventional septic system works:

  1. Underground wastewater treatment facilities, known as septic systems, are typically found in rural locations that lack access to centralized sewage systems. They clean wastewater from residential plumbing, such as that produced by bathrooms, kitchen drains, and laundry, by combining natural processes with well-proven technology. One of the most common types of wastewater treatment systems is comprised of two parts: the septic tank and the drainfield, often known as a soil absorption field. It is the septic tank’s job to decompose organic materials and extract floatable substances (such as oils and grease) and solids from the wastewater. These systems discharge the liquid (referred to as effluent) from the septic tank into a series of perforated pipes buried in the soil or into chambers or other specific devices designed to gently release the effluent into the soil over time. Alternate treatment systems rely on pumps or gravity to assist septic tank effluent in trickling through a variety of media such as sand, organic matter (e.g., peat and sawdust), constructed wetlands, or other media to remove or neutralize pollutants such as pathogens that cause disease, nitrogen, and phosphorus, among other contaminants. Prior to discharging wastewater into the environment, several alternative systems are designed to evaporate or disinfect the waste.
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The Guadalupe-Blanco River Authority has built an animated, interactive model of how a residential septic system works, which you can view here.

Do you have a septic system?

Check out the Guadalupe-Blanco River Authority’s animated, interactive model of how a residential septic system operates to learn more.

  • You make use of well water. In your home, the water pipe that brings water into the house does not have a meter. In the case of a water bill or a property tax bill, you will see “$0.00 Sewer Amount Charged.” It is possible that your neighbors have a septic system

How to find your septic system

You can locate your septic system once you have confirmed that you have one by following these steps:

  • Taking a look at the “as constructed” drawing of your house
  • Making a visual inspection of your yard for lids and manhole covers
  • Getting in touch with a septic system service provider for assistance in locating it

Failure symptoms: Mind the signs!

A bad odor is not necessarily the first indicator of a septic system that is failing to work properly. Any of the following signs should prompt you to seek expert assistance:

  • Water backing up into the drains of homes and businesses
  • It is especially noticeable in dry weather that the drainfield grass is bright green and spongy. The presence of standing water or muddy soil near your septic system or in your basement
  • A strong stench emanating from the area surrounding the septic tank and drainfield

Here’s Why You Have Two Septic Tanks

Disclosure: This post contains affiliate links, which means that if you purchase a product after clicking on one of our links, we may receive a commission or free product from the firms featured in this post. Amazon is a good illustration of this. Depending on where you live or work, you may have an on-site wastewater management system (also known as a septic system) or you may be linked to your municipality’s sewage system. It is in the best interests of all property owners to be aware of whether or not their land has a dedicated septic system.

  • What is the purpose of having two septic tanks?
  • Blackwater is a combination of urine, fecal matter, and flushwater that is used to flush toilets.
  • On the other hand, greywater is water that comes from home equipment other than toilets (for example, bath tubs, showers, sinks, and washing machines), and it is a type of waste water.
  • A typical domestic septic tank is made up of two spherical concrete tanks with lids that are placed next to each other in a row.
  • Septic tanks are divided into two pieces by a partition, with the first compartment having twice the size of the second compartment.
  • It is preferable in a variety of sanitation systems to keep greywater separate from blackwater in order to decrease the quantity of water that becomes significantly contaminated with bacteria.
  • Blackwater contains pathogens that must be destroyed before wastewater can be discharged into the environment without causing harm to the ecosystem.
  • Due to the large amounts of organic elements in the waste, it is also not digested rapidly.
  • Alternating systems are what these are referred to as.

Consequently, the soil’s capacity to handle wastewater is revitalized as a result of the drying out of the disused part.

How Do Septic Systems Work?

All septic systems, according to conventional wisdom, involve a septic tank, which is often a huge rectangular or cylindrical container constructed of concrete, fiberglass, or polyethylene that collects wastewater. The septic tank is a container that is buried below and into which effluent from the property’s plumbing fixtures is channelled. Heavy solid wastes sink to the bottom of the pond, where anaerobic bacterial activity creates digested sludge and gases as a result of the process. Scum layer is formed at the top of the scum layer as lighter solid wastes (such as grease, oils, and fats) rise to the surface.

  1. In the septic tank, solids that have not decomposed are still there.
  2. When this occurs, the drainfield becomes blocked, which may eventually result in the drainfield failing completely.
  3. Furthermore, the septic system may collapse, resulting in sewage effluent being discharged straight to the ground or backing up into the home or structure.
  4. Septic failure is more common in older systems that have a single drainage receptacle that does not alternate with the other drains.
  5. Clogging may occur more often in systems that have been in operation for a long length of time because the soil surrounding the drainage receptacle has become more porous.
  6. When this occurs, you are confronted with the following possibilities: It is possible that sewage will begin to back up into your home or business’s pipes.
  7. Alternatively, you may detect sewage pouring from a tiny grated pipe positioned outside your facility’s perimeter (this is called the overflow relief disconnector gully).
  8. There will be a noticeable foul stench, and this will represent a serious health hazard to the public.
  9. Single compartment septic tanks are the most common type of septic tank found in systems built before 1975.
  10. Due to the fact that both compartments of this type of septic tank need to be pumped, it is important that you are aware of this fact.
  11. Septic tanks are common in older homes and businesses that have been in operation for more than 40 years.

Either that, or you have a single septic tank divided into two chambers. Whatever the situation may be, there will almost certainly be two lids that you will need to unscrew in order to pump the contents out.

How Often Should a Septic Tank Be Pumped?

Ensure that your septic tank is regularly examined and pumped, ideally every three to five years, by following the manufacturer’s recommendations. Septic tank pumping frequency will, of course, vary depending on the size of the tank, how much solid waste is being dumped into it, and the behaviors of those who utilize its contents. To ensure that your septic tank system remains in excellent working order, there is only one surefire method to do it, and that is to have your tank examined on an annual or more frequent basis.

  1. The septic tank should be pumped once the bottom of the scum layer reaches within 3 inches of the base of the outlet baffle, or when the top of the sludge layer comes within 12 inches of the base of the outlet fitting (whichever occurs first).
  2. This has everything to do with the size of your septic tank and the amount of waste it can handle.
  3. It is important to remember that your septic tank should be opened and examined at the very least once every three years if an annual check is not possible.
  4. Pumping will be necessary if the sludge and scum layers are not removed as previously indicated.
  5. Keep in mind that if you are vigilant in getting your septic tank pumped on a regular and periodic basis, you will avoid the most prevalent reasons of (very avoidable) septic tank system failure.
  6. In most cases, regular and religious maintenance will spare you from the bother and stress of having to pay for highly expensive emergency septic system repairs.
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How a Septic System Works

The septic system is a sewage treatment and disposal system.A basic system consists of a septic tank and drainage area. All flows from the house are directed by way of a main sewer line to the septic tank. 40% of household sewage is from the toilet, 30% is from bathing, 15% is from laundry and 10% is from the kitchen.

What is a Septic Tank?

The septic tank is a watertight chamber constructed of concrete or poly material. An average size is approximately 1000 gallons to 1500 gallons in capacity. Most septic tanks have one or two compartments. Two compartment tanks, or two single compartment tanks in series, provide better settling of the solids.Each septic tank has an inspection port over each baffle as well as a manhole access port. The manhole lid needs to be accessed for the tank to be pumped. These can be found at or below the ground surface. Typically you will find 4” diameter plastic lids at the ground surface that are the inspection ports over either of the baffles on the tank and not where the tank is to be pumped through.The baffles of the tank are one of the most important components in the septic tank. The inlet baffle forces the wastewater from the sewer line down into the tank instead of across the surface of the tank and into the outlet pipe leading to the absorption area. The outlet baffle prevents the scum layer from moving into the soil absorption area. In a properly functioning septic tank the solids and sludge settle to the bottom and accumulate, scum (lightweight materials including paper, fats and greases) rises to the surface and the effluent (liquid) in the tank existing between those layers overflows to the absorption area.
The absorption area uses the ability of the stone and soil to filter and treat the remaining effluent. Examples of absorption areas are seepage beds, trenches, sand mounds or older cesspools / seepage pits. A cesspool is a block walled dirt bottom pit. Cesspools are no longer an installation choice but there are many properties that still have functioning cesspools. Odors and gasses from the septic system, that are always present, are vented through pipes on the house roof.For further information: -On Lot Sewage System Owner Manual -A Homeowner’s Guide to Septic Systems – by EPA

A Beginner’s Guide to Septic Systems

  • Septic systems are used to dispose of waste from homes and buildings. Identifying the location of the septic tank and drainfield
  • What a Septic System Is and How It Works Keeping a Septic System in Good Condition
  • Signs that a septic system is failing include:

Septic systems, also known as on-site wastewater management systems, are installed in a large number of buildings and houses. It is easy to lose sight of septic systems, which operate quietly, gracefully, and efficiently to protect human and environmental health due to their burying location.

Septic systems are the norm in rural regions, but they may also be found in a lot of metropolitan places, especially in older buildings. It is critical to understand whether or not your building is on a septic system.

Is Your Home or Building on a Septic System?

It is possible that the solution to this question will not be evident. If a structure looks to be connected to a sewage system, it may instead be connected to a septic system. It is fairly unusual for tenants to be unaware of the final destination of the wastewater generated by their residence. Some of the hints or signs listed below will assist in determining whether the facility is served by a septic system or whether it is supplied by a sewer system:

  • Sewer service will be provided at a cost by the city or municipality. Pay close attention to the water bill to see whether there is a cost labeled “sewer” or “sewer charge” on it. If there is a fee for this service, it is most likely because the facility is connected to a sewage system. Look up and down the street for sewage access ports or manholes, which can be found in any location. If a sewage system runs in front of a property, it is probable that the house is connected to it in some way. Inquire with your neighbors to see if they are connected to a sewer or septic system. The likelihood that your home is on a sewer system is increased if the properties on each side of you are on one as well. Keep in mind, however, that even if a sewage line runs in front of the structure and the nearby residences are connected to a sewer system, your home or building may not be connected to one. If the structure is older than the sewer system, it is possible that it is still on the original septic system. Consult with your local health agency for further information. This agency conducts final inspections of septic systems to ensure that they comply with applicable laws and regulations. There is a possibility that they have an archived record and/or a map of the system and will supply this information upon request

All property owners should be aware of whether or not their property is equipped with an on-site wastewater treatment system. Georgia law mandates that the property owner is responsible for the correct operation of a septic system, as well as any necessary maintenance and repairs.

Locating the Septic Tank and Drainfield

The presence or absence of an on-site wastewater treatment facility should be known by all property owners. In Georgia, the property owner is responsible for the correct operation of the septic system, as well as for any necessary maintenance and repairs to be performed.

How a Septic System Works

Typical sewage treatment system (figure 1). It is composed of three components (Figure 1): the tank, the drain lines or discharge lines, and the soil treatment area (also known as the soil treatment area) (sometimes called a drainfield or leach field). The size of the tank varies according to the size of the structure. The normal home (three bedrooms, two bathrooms) will often include a 1,000-gallon water storage tank on the premises. Older tanks may only have one chamber, however newer tanks must have two chambers.

  1. The tank functions by settling waste and allowing it to be digested by microbes.
  2. These layers include the bottom sludge layer, the top scum layer, and a “clear” zone in the center.
  3. A typical septic tank is seen in Figure 2.
  4. It is fortunate that many of the bacteria involved are found in high concentrations in the human gastrointestinal tract.
  5. Although the bacteria may break down some of the stuff in the sludge, they are unable to break down all of it, which is why septic tanks must be cleaned out every three to seven years.
  6. In addition, when new water is introduced into the septic tank, an equal volume of water is pushed out the discharge lines and onto the drainfield.
  7. The water trickles out of the perforated drain pipes, down through a layer of gravel, and into the soil below the surface (Figure 3).
  8. A typical drainfield may be found here.
  9. Plants, bacteria, fungus, protozoa, and other microorganisms, as well as bigger critters such as mites, earthworms, and insects, flourish in soil.

Mineralogical and metallic elements attach to soil particles, allowing them to be removed from the waste water. The cleaned water finally finds its way into the groundwater system.

Maintaining a Septic System

The most typical reason for a septic system to fail is a lack of proper maintenance. Septic systems that are failing are expensive to repair or replace, and the expense of repairs rests on the shoulders of the property owner (Figure 4). Fortunately, keeping your septic system in good working order and avoiding costly repairs is rather simple. Figure 4. Septic system failure is frequently caused by a lack of proper maintenance. It is in your best interests to be aware of the location of the system, how it operates, and how to maintain it.

  1. You should pump the tank if you aren’t sure when the last time it was pumped.
  2. It is not permissible to drive or park over the tank or drainage field.
  3. No rubbish should be disposed of in the sink or the toilet.
  4. It’s important to remember that garbage disposals enhance the requirement for regular pumping.
  5. When designing a landscape, keep the septic system in mind.
  6. It is also not recommended to consume veggies that have been cultivated above drainfield lines (see Dorn, S.
  7. Ornamental Plantings on Septic Drainfields.

C 1030).

Any water that enters your home through a drain or toilet eventually ends up in your septic system.

Don’t put too much strain on the system by consuming a large amount of water in a short period of time.

Additives should not be used.

Various types of additives are available for purchase as treatment options, cleansers, restorers, rejuvenator and boosters, among other things.

To break up oil and grease and unclog drains, chemical additives are available for purchase.

Pumping out the septic tank is not eliminated or reduced by using one of these systems.

They remain floating in the water and travel into the drainfield, where they may block the pipes. Acids have the potential to damage concrete storage tanks and distribution boxes.

Signs a Septic System is Failing

A failed system manifests itself in the following ways:

  • Sinks and toilets drain at a snail’s pace
  • Plumbing that is backed up
  • The sound of gurgling emanating from the plumbing system House or yard aromas that smell like sewage
  • In the yard, there is wet or squishy dirt
  • Water that is gray in hue that has accumulated
  • An region of the yard where the grass is growing more quickly and is becoming greener
  • Water contaminated by bacteria from a well

If you notice any of these indicators, you should notify your local health department immediately. An environmentalist from the health department can assist in identifying possible hazards. There are also listings of state-certified contractors available from the local health department, who may do repairs. Repairs or alterations to the system must be approved by the health department and examined by an inspector. Keep an eye out for any meetings that may take place between a health department inspector and a contractor to discuss repairs to your system.

  • Household garbage that has not been properly handled is released into the environment when systems fail.
  • It has the potential to pollute surrounding wells, groundwater, streams, and other sources of potable water, among other things.
  • The foul odor emanating from a malfunctioning system can cause property values to plummet.
  • Briefly stated, broken systems can have an impact on your family, neighbors, community, and the environment.
  • Septic systems are an effective, attractive, and reasonably priced method of treating and disposing of wastewater.

Figures 2 and 3 reprinted with permission from: CIDWT. 2009. Installation of Wastewater Treatment Systems. Consortium of Institutes for Decentralized Wastewater Treatment. Iowa State University, Midwest Plan Service. Ames, IA.

History of the current status and revisions Published on the 15th of August, 2013. Published on March 28th, 2017 with a full review.

Why You Might Want a 2-Tank Septic System

Septic tanks are critical to the functioning of your household on a daily basis. When wastewater exits your house, it will be collected in a tank, where it will be broken down and then discharged into a drain field. While traditionally single-compartment septic tanks have been the preferred choice, a two-tank septic system is becoming increasingly common. So, what benefits does a dual septic tank provide that a single septic tank does not? Let’s have a look and see!

What does a 2-Tank Septic System Do?

In contrast to a traditional septic system, the two tanks on a dual septic system are utilized to separate and store blackwater and greywater independently from one another. Urine, fecal matter, and flush water are all examples of what is considered blackwater. Greywater, on the other hand, is the liquid that comes from showers, sinks, and washing machines that is far less pathogenic. This relieves a significant amount of stress off the septic tank as a whole and helps to prevent it from being overcrowded.

A better Removal of Solids and Effluent Quality

Additionally, a 2-tank septic system is more effective at breaking down and eliminating particles when compared to a single tank system. Having an additional treatment area to break down waste and settle the solids can go a long way toward improving the overall quality of your septic system.

On top of that, the vertical wall is positioned in such a way that it traps sediments more efficiently, resulting in improved effluent flow and protection of the drainage field.

How a 2-Tank Septic System Saves You Money

A two-tank septic system not only does a better job of holding and discharging waste, but it may also save you money in the long term. Dual tanks have the natural ability to store more wastewater, which means that you will spend less money on wastewater pumping. Compared to a traditional septic tank, the likelihood of overflowing and damaged pipes is decreased due to the lesser amount of strain that it is subjected to during operation. When you use a standard system, you will not have to deal with the costly repairs that are frequently associated with them.

How Can Norway Septic Help?

Located in Norway, Indiana, Norway Septic Inc. is a customer-focused company devoted to delivering outstanding septic tank cleaning and septic tank pumping services to homes and business owners in the Michiana area. We take great delight in finishing the task that others have left unfinished. For more information on purchasing a new effluent filter or scheduling a septic tank cleaning with one of our specialists, please contact us right now.

How Does a Septic Tank Work?

Mr. Fix-It-Up-For-The-Family You may save a lot of money if you understand how a sewage treatment system works—and what can go wrong—so that you can handle your own septic system maintenance.

How does a septic tank work?

Pumping the tank on a regular basis eliminates sludge and scum, which helps to keep a septic system in good working order. It is possible for a well-designed and well built septic system to last for decades, or it might collapse in a matter of years. It is entirely up to you as long as you can answer the question of how do septic tanks function. Healthy septic systems are very inexpensive to maintain, but digging up and replacing a septic system that has completely collapsed may easily cost tens of thousands in labor and material costs.

It’s critical to understand how a septic tank works in order to maintain one.

Let’s take a look below ground and observe what happens in a properly operating septic system, shall we?

Understand that a septic system is a cafeteria for bacteria

Bacteria are responsible for the proper operation of a septic system. They decompose garbage, resulting in water that is clean enough to safely trickle down into the earth’s surface. The entire system is set up to keep bacteria healthy and busy at all times. Some of them reside in the tank, but the majority of them are found in the drain field. 1. The septic tank is the final destination for all waste. 2. The majority of the tank is filled with watery waste, referred to as “effluent.” Anaerobic bacteria begin to break down the organic matter in the effluent as soon as it enters the system.

  • A layer of sludge settles to the bottom of the container.
  • 4.
  • Scum is mostly constituted of fats, greases, and oils, among other substances.
  • Grease and oils float to the surface of the water.
  • (5) A filter stops the majority of particles from reaching the exit pipe.
  • The effluent is discharged into the drain field.
  • Effluent is allowed to leak into the surrounding gravel because of holes in the drain septic field pipe.

When gravel is used to surround pipes, water can run into the soil and oxygen can reach germs. The garbage is completely decomposed by aerobic bacteria found in gravel and dirt. 9. Potable water seeps into the groundwater and aquifer system from the surface.

Septic Tank Clean Out: Don’t abuse the system

Septic systems that have been correctly planned and constructed require just occasional ‘pumping’ to remove the sludge and scum that has built up inside the tank. However, if you don’t understand how a septic tank works, you may unintentionally hurt or even destroy the system.

  • Drains are used to dispose of waste that decomposes slowly (or not at all). Cigarette butts, diapers, and coffee grounds are all known to cause issues. Garbage disposers, if utilized excessively, can introduce an excessive amount of solid waste into the system. Lint from synthetic fibers is emitted from washing machine lint traps. This substance is not degraded by bacteria in the tank and drain septic field. Bacteria are killed by chemicals found in the home, such as disinfecting cleansers and antibacterial soaps. The majority of systems are capable of withstanding limited usage of these goods, but the less you use them, the better. When a large amount of wastewater is produced in a short period of time, the tank is flushed away too quickly. When there is too much sludge, bacteria’s capacity to break down waste is reduced. Sludge can also overflow into the drain field if there is too much of it. Sludge or scum obstructs the flow of water via a pipe. It is possible for tree and shrub roots to obstruct and cause harm to a drain field. Compacted soil and gravel prevent wastewater from seeping into the ground and deprive germs of oxygen. Most of the time, this is caused by vehicles driving or parking on the drain field.

Get your tank pumped…

Your tank must be emptied on a regular basis by a professional. Pumping eliminates the accumulation of sludge and scum that has accumulated in the tank, which has caused the bacterial action to be slowed. If you have a large tank, it may be necessary to pump it once a year; but, depending on the size of your tank and the quantity of waste you send through the system, you may go two or three years between pumpings. Inquire with your inspector about an approximate guideline for how frequently your tank should be pumped.

…but don’t hire a pumper until you need it

Inspections and pumping should be performed on a regular basis. However, if you’re not afraid of getting your hands dirty, you may verify the sludge level yourself with a gadget known as The Sludge Judge. It ranges in price from $100 to $125 and is commonly accessible on the internet. Once you’ve verified that your tank is one-third full with sludge, you should contact a professional to come out and pump it out completely.

Install an effluent filter in your septic system

Garbage from your home accumulates into three distinct strata. The septic filter is responsible for preventing blockage of the drain field pipes.

Septic tank filter close-up

The septic tank filter is responsible for capturing suspended particles that may otherwise block the drain field pipes. Obtain an effluent filter for your tank from your contractor and place it on the outflow pipe of your tank. (It will most likely cost between $50 and $100, plus labor.) This device, which helps to prevent sediments from entering the drain field, will need to be cleaned out on a regular basis by a contractor to maintain its effectiveness.

Solution for a clogged septic system

If your septic system becomes clogged and you find yourself having to clean the filter on a regular basis, you might be tempted to simply remove the filter altogether. Hold on to it. Solids, wastewater, and scum are separated into three levels in septic tanks, which allows them to function properly (see illustration above). Solids sink to the bottom of the container, where microbes breakdown them. The scum, which is made up of trash that is lighter than water, rises to the surface. In the drainage field, the middle layer of effluent leaves the tank and goes through an underground network of perforated pipes to the drainage field.

  • Keep the effluent filter in place since it is required by your state’s health law.
  • Waste particles might flow through the filter and clog the perforated pipes if the filter is not used.
  • Your filter, on the other hand, should not require cleaning every six months.
  • A good chance is high that you’re flushing filter-clogging things down the toilet, such as grease, fat, or food scraps.
  • A garbage disposal will not be able to break down food particles sufficiently to allow them to flow through the septic tank filtration system.
  • Plastic items, disposable diapers, paper towels, nonbiodegradable goods, and tobacco products will clog the system if they are flushed through it.

For additional information on what should and should not be flushed down the toilet, contact your local health authority. More information on removing lint from your laundry may be found here.

Get an inspection

Following a comprehensive first check performed by an expert, regular inspections will cost less than $100 each inspection for the next year. Your professional will be able to inform you how often you should get your system inspected as well as how a septic tank functions. As straightforward as a septic system appears, determining its overall condition necessitates the services of a professional. There are a plethora of contractors who would gladly pump the sludge out of your tank, but many, in my experience, are unable to explain how a septic system works or how it should be maintained.

A certification scheme for septic contractors has been established in certain states; check with your state’s Secretary of State’s office to see whether yours is one of them.

Also, a qualified inspector will be able to tell you whether or not your tank is large enough to accommodate your household’s needs, as well as the maximum amount of water that can be passed through it in a single day.

As you learn more about how a septic tank works, your professional should be able to tell you whether or not your system will benefit from this treatment.

Alternatives to a new drain field

If an examination or a sewage backup indicate that your drain field is in need of replacement, the only option is to replace it completely. As a result, it’s important to talk with a contractor about other possibilities before proceeding with the project.

  • Pipes should be cleaned. A rotating pressure washer, used by a contractor, may be used to clean out the drain septic field pipes. The cost of “jetting” the pipes is generally around $200. Chemicals should be used to clean the system. A commercial solution (not a home-made one) that enhances the quantity of oxygen in the drain field should be discussed with your contractor before installing your new system. Septic-Scrub is a product that I suggest. A normal treatment will cost between $500 and $1,000. Make the soil more pliable. The practice of “terra-lifting,” which involves pumping high-pressure air into several spots surrounding the drain field, is authorized in some regions. Some contractors use it to shatter compacted dirt around the pipes. Depending on the circumstances, this might cost less than $1,000 or as much as $4,000 or more.

Protect your drain septic field from lint

When this device is in place, it inhibits lint from entering the system, especially synthetic fibers that bacteria are unable to digest. One of these filters, which I’ve designed and termed theSeptic Protector, was invented by me. An additional filter is included in the price of around $150 plus delivery. Learn more about how to filter out laundry lint in this article.

Don’t overload the septic system

Reduce the amount of water you use. The volume of water that flows into your tank, particularly over a short period of time, can be reduced to avoid untreated waste from being flushed into your drain field. Replace outdated toilets with low-flow ones, install low-flow showerheads, and, perhaps most importantly, wash laundry throughout the week rather than just on Saturday mornings to save water.

Meet the Expert

Septic systems, according to Jim vonMeier, are the solution to America’s water deficit because they supply cleaned water to depleted aquifers, according to vonMeier. He travels the country lobbying for septic systems, giving lectures, and giving testimony. For septic system inquiries, as well as information on the operation of the septic tank, contact him by email.

Septic Tank Designs

Receive articles, stories, and videos about repair sent directly to your email! Now is the time to sign up. Repair+ Receive Notifications This article is part of a series on septic tank installation, including the selection, placement, and configuration of septic tanks. We consider septic tanks to be tanks with identical geometry and design that are utilized in front of other pretreatment units, including garbage tanks and processing tanks, when discussing septic tanks. In our last article, we offered definitions and descriptions of several types of sewage tanks.

Septic tanks provide for the separation of particles from wastewater because heavier sediments sink while fats, greases, and lighter solids float, allowing for the separation of solids from wastewater.

A relatively clear liquid layer between the settled solids and the floating solids is known as the clear zone, and between the two layers lies a relatively clear liquid layer known as the clear zone.

Although this liquid has not been extensively treated, it has been significantly cleared, and the treatment process has begun.

The right detention time

The second most significant purpose of a septic tank is to hold the solids that have collected. As a result, one of the first concerns in design is to have a tank large enough to contain the solids until the tank can be emptied out of the way. At the very least, it is desirable to have two days’ worth of detention time in the tank. The detention period is derived by dividing the tank volume by the amount of sewage that flows through the tank on a daily basis. As a result, the detention period for a 1,000-gallon tank with a daily sewage flow of 450 gpd is 1,000 gallons divided by 450 gpd, or 2.2 days, which is longer than the two days that are intended.

While a result, maintaining strict adherence to the required detention duration as the tank fills would result in an increase in tank volume.

Levels of treatment

Septic tank treatment should be effective enough that the effluent contains between 140 and 220 mg/l biochemical oxygen demand (BOD), 45 to 70 mg/l total suspended solids (TSS), and between 10 and 30 mg/l fats, oil, and grease (FOG) (FOG). Whenever the effluent contains more than 175 mg/l BOD, 60 mg/l TSS, or 25 mg/l FOG, the tank must be pumped out. Alternatives include expanding tank capacity or installing an aerobic treatment unit (ATU) or a media filter if the strength of the influent wastewater is too high and the effluent is not treated to these levels.

Chemicals, drain cleaners, antibiotics, and water softener backwash, to name a few examples, can all reduce the efficacy of treatment.

Dealing with disposals

In addition to the usage of a garbage disposal, the installation of a grinder pump or solids-handling pump in the basement or at a lower level than the tank are two other key factors that influence the right sizing of a septic tank. In both circumstances, it is necessary to expand tank capacity. The standard advice is to enhance capacity by at least 50%, or 1.5 times the design capacity if these features are not included in the design. The use of a waste disposal adds solids to the tank, which are typically comprised of compounds that are difficult to degrade in the tank.

  1. When the disposal is running, additional water is added.
  2. Additional criteria for systems equipped with disposals or sump pumps include the use of a two-compartment tank or numerous tanks to provide the required capacity for the system.
  3. When working with homeowners who wish to install a trash disposal, it is a good idea to inform them of their responsibilities for the correct maintenance of the system.
  4. Single-compartment septic tanks have depth, length-to-width ratio, and position of baffles, all of which contribute to the amount of time it takes for solids to settle and be stored in the tank.
  5. Although a 3:1 length-to-width ratio is optimal, most tanks are not constructed in this manner.

For effective venting, the exit pipe height should be at least two inches lower than the input pipe elevation, and there should be at least two inches of open air space above the liquid level. Similarly, in a two-compartment tank, this holds true between compartments.

More tanks or compartments?

In the case of a two-compartment tank, the capacity of the first compartment must be equal to or greater than the volume of the second compartment. According to the flow direction, each compartment shall hold at least 25% of the total liquid capacity and have an internal horizontal dimension of at least 24 inches when measured horizontally in the direction of flow. A typical two-division tank with a capacity of 1,500 gallons would have 1,000 gallons of capacity in the first compartment and 500 gallons of capacity in the second.

A larger surface area in touch with the soil is provided by numerous tanks, which can aid in the cooling of effluent released from a dishwasher when many tanks are employed.

From the perspective of installation, the transport and placement of smaller tanks in series is less difficult, and the total amount of excavation required is often less.

It is critical to position the tank near to the home in order to reduce the likelihood of a sewage pipe obstruction from the house to the tank in the future.

Setback restrictions from wells, property lines, and easements, among other things, must be in compliance with municipal regulations.

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