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Exploring Different Types Of Septic Tanks

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When it comes to getting a septic tank, you can't just go out and quickly buy one. There are different types to choose between, and they each have their own advantages and disadvantages. Doing your research will help you find the best type of tank for your own needs, based on budget and the terrain you live on.

Single Tank Systems

The first type is the one where everything goes into the one compartment. This means that all the solid waste mixes with the septic effluent right away and is then all discharged into the environment.

Multi-Compartment Systems

Moving on from single-compartment systems, there are the tanks with multiple compartments. The solid waste is kept separate from the septic effluent, which can lead to better treatment before it is all released. There can also be a final pumping chamber in some of these systems, along with media filters. The better treatment will lead to the absorption field's life expectancy lasting longer.

Low-Pressure Dose Septic Tanks

Both of the above options are the more conventional systems. The low-pressure dose option, also called the low-pressure pipe system, is an alternative for areas where the soil conditions cannot support the conventional units. Low-pressure systems are popular when the drainfield is up a hill from the tanks and where there is an uneven terrain. Next to the septic tank, a pumping chamber will get the fluid up the hill/over the terrain. The pump is usually used twice a day.

Evapotranspiration Systems

Another option is the evapotranspiration system (ET). These are used mostly in arid or semi-arid areas, where the evaporation is higher than the rainfall. Natural evaporation does most of the work through a sand barrier, and water is sent to the grasses and plants across the drainfield.

Aerobic Wastewater Treatment Tanks

The final option is the aerobic system, which can be used in any environment a septic tank would be needed. It is like a smaller version of a sewage plant, doing all the tasks the urban plants will do. All the wastewater is treated through natural processes and uses oxygen to carry them through.  Some tanks will have pre-treatment chambers.

When you need a septic tank, you have a decision to make. It's worth thinking about your environment and terrain, as well as looking at the budget you have available. These will affect the type of tank you need, as not all septic systems will be suitable for you.


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