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AN INEXPENSIVE AND EASY ALTERNATIVE TO TABLET CHLORINATION. Click here for more information!

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Most Common Types of Septic Systems in Texas

  • Conventional Systems

    • Graveled Systems

      The older-style graveled systems contain a layer of gravel in the drain field. While some treatment of waste occurs in the septic tanks, most of the treatment occurs as wastewater discharged from the tank enters the drain field and is filtered through the gravel and the soil below. Over time, bacteria and other organisms in the soil consume any organic material in the wastewater. These organisms multiply and form a layer called a bio-mat that sits on the soil layer. When the drain field is in balance, parasites and other organisms keep the bio-mat from becoming too thick to allow passage of wastewater to the soil.

      If the drain field is not in balance there may be an overload of the drain field, which can occur when the water table rises above the drain pipe and stops the drain field from discharging water. At this point baths and toilets will start to back up.

      Drain field overload can occur when there is overuse of water in the house, such as guests in the house for long periods of time, if faucets or toilets are left running for prolonged periods, if an unusually heavy amount of laundry is done over a short period of time, or if the drain field soil is saturated by heavy rains. If the system is overwhelmed by overuse of water, the drain field may fail to function properly and may become damaged to the point of needing to be replaced. Depending on your situation, many of these problems can be overcome by adding an Aerobic Treatment Unit and Effluent Unit to your existing septic system.


    • Low-Pressure Dosage Systems

      Low-pressure dosage systems are used where soil and topographical conditions do not allow placement of a graveled septic system, such as when the drain field has to be located up-hill from the septic tanks or where the terrain is uneven.

      Low-pressure dosage systems contain a standard septic tank and an additional tank called a pumping chamber. Under normal conditions, a low-pressure pump forces wastewater in the pumping chamber where it is then forced into the drain field to the point where the entire field is saturated. Then, the field is left to drain.


  • Alternative Systems

    • Aerobic

      The basic aerobic septic system, aka aerobic treatment unit (ATU), aerobic wastewater treatment plant and aerobic treatment sewage disposal system, is a system that provides a suitable oxygen rich environment for organisms that can reduce the organic portion of the waste into carbon dioxide and water in the presence of oxygen.

      Aerobic septic systems are similar to conventional septic systems in that they both use natural processes to treat wastewater. But unlike septic (anaerobic) treatment, the aerobic treatment process requires oxygen. Aerobic treatment units, therefore, use a mechanism to inject and circulate air inside the treatment tank.

      Because aerobic septic systems use a higher rate process, they are able to achieve superior effluent quality. The effluent can be discharged to the subsurface as in a septic tank leach field or, in some cases, discharged directly to the surface.

      The early aerobic systems consisted of little more than an aerator placed in a traditional septic tank. These were often referred to as an aeration septic system or aerator septic system.

      The newer aerobic septic systems are pre-engineered and operate at a high level of efficiency.

      The use of residential aerobic septic systems has been fairly limited, in part, because of the widespread use of conventional septic systems, which are relatively inexpensive and easy to maintain. Conventional septic systems are the most common onsite wastewater treatment systems in rural areas.

      However, conventional septic systems are not suitable for all residential applications. Some homes may not have enough land area or appropriate soil conditions to accommodate the soil absorption drainfield. In some communities, the water table is too high to allow the drainfield to give adequate treatment to the wastewater before it is returned to groundwater.

      One of the most common reasons to select an aerobic septic system is to replace failing conventional septic systems, which are a major source of groundwater pollution in some areas. If a failed conventional septic system needs to be replaced or if a site is inappropriate for a conventional septic system, an aerobic septic system may be a viable option.

      • Advantages:

        • Can provide a higher level of treatment than a conventional septic systems
        • Helps protect valuable water resources where conventional septic systems are failing
        • Provides an alternative for sites not suited for conventional septic systems
        • May extend the life of a drain field
        • May allow for a reduction in drain field size
        • Reduces ammonia discharged to receiving waters




The aerobic treatment plant pictured above is manufactured by Hoot Aerobic Systems, Inc. Other brands may not be configured exactly the same. Hoot graphics and text used by permission.

  1. Pretreatment tank where influent enters.
  2. Aeration chamber where oxygen is pumped into the waste water.
  3. Clarifier chamber where the clear, odorless effluent rises.
  4. Chlorinator where the clear effluent passes through for disinfection.
  5. Holding tank for disinfected effluent ready for discharge.
  6. Quiet, efficient aerator and pump.
  7. Solid-state monitors and controls the system.
  8. Discharge Pump
 
"HOW IT WORKS"

The aeration chamber (2), the heart of this sewage treatment system, introduces oxygen by pump (6) into the sewage. The aeration mixes the organic materials of the sewage with the bacterial population, allowing the bacteria to attack and reduce the organic materials. Any activated sludge settling in the final clarifier chamber (3) is reintroduced into the aeration chamber by sewage movement in the aeration chamber.

As solids settle in the clarifier, a clear, odorless effluent rises. At this point the effluent passes through the chlorinator (4), which should contain disinfectant tablets, for final disinfection. The effluent then enters the chlorine contact chamber (5) or holding tank that stores the chlorinated effluent for discharge through sprinklers.


      • Surface Distribution (sprinklers)

        A surface distribution system is very similar to a lawn irrigation system. Spray heads are used to distribute treated wastewater to the surface of the yard. In the State of Texas, the sprinkler heads used are required to be specially made for distribution of reclaimed wastewater and are purple, as is the piping used for the lines. Because this system has the highest potential for human contact with treated wastewater, it requires the greatest amount of wastewater treatment and the most attention to maintenance.


      • Mound Systems

        When field lines need to be placed above ground in order to keep the proper distance from the water table, mound systems are used where lines are laid on top of the ground and covered with soil, grass and other foliage.


      • Drip Emitters

        A drip emitter system is a system that forces the liquid effluent (wastewater) through tubing with drip emitters and into the substandard soil in cases where the soil will not absorb the effluent.

        Some uses for Drip Emitters:

        For Homeowners:
        Many homeowners eventually have a problem with their field lines. Drip emitter systems can be an expensive way to solve field line problems, but if your soil is the problem, then it may be the correct solution. Solving the septic problem and having piece of mind is also worth a great deal. If properly installed by a professional, this can be a fast process and ensure the resolution of the problem.

        For Homebuyers:
        Purchasing a home with a problematic septic system can often be solved using a drip emitter system.

        For Builders & Developers:
        Housing can be built on lots that could not formerly be developed.


 

 

Aerobic Septic Service Company
P.O. Box 1823
Azle, TX 76020
Ph (817) 270-9046
Fax (817) 444-9162

Call Aerobic Septic Service Company Today

Aerobic Septic Service Company
8765 Spring Cypress Lane L-210
Spring, TX 77379
Ph (832) 904-9529
Fax (936) 588-3491

 

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