By Dorothy Price


Septic systems are underground wastewater treatment devices. They are usually highly efficient and self-contained hence making them easy to use. They differ from the sewer systems in that the wastewater is treated on site. A majority of people prefer to use them as they are not only easy to maintain but also pocket friendly. Installing them also needs limited space. The following are, therefore, the different septic design Texas.

The older types of septic systems are built using traditional gravity. In a conventional gravity system, the drainfield is made up of perforated pipes, each measuring 4 inches in diameter. The pipes are laid in trenches that are filled with gravel. While digging the trenches, you are supposed to ensure that they are located 3 feet above any layer. Such a restricting layer may be a water table or a hardpan.

The effluent is filtered by the soil that is below the drainlines as it makes its way through the numerous pore spaces. As the effluent percolates through the soil, moreover, it is treated by biological and chemical processes. The treatment, therefore, cleans up the wastewater before it mixes up with groundwater. For the system to work efficiently, the soil has to be dry, aerated, permeable and deep enough for the cleaning process to be completed.

Secondly, the pressure distribution drainfield is another common septic design system in Texas. This one, unlike the former, is most preferred in the specific areas that lack the right amount of space for the installation of the gravity model. It has a pump whose primary role is to distribute the effluent on the drainfield.

The system, moreover, has an additional series of pressurized lines. The lines connect the pump tank to the drainage field. The necessity of this is to see to it that all the effluent is pumped to the drainfield at the same time. Pressure systems have numerous layout designs as compared to the gravity systems. When laying out your designs, therefore, you should conduct a research to find out which type of layout best works for you.

In cases where the amount of soil is not sufficient to support the other two types of drainage systems, a sand filter system is the best alternative. In this case, a container that is filled with sand is placed in the midst of the pump tank and the pressurized drainfield. The sand is used to treat the effluent which consequently moves to the shallow soils on the surface. The sand filter can be made of different materials including concrete.

To maintain a uniform distribution of the effluent, it is pumped in controlled measures. While it moves through the sand particles, the wastewater is collected by an underdrain. It is then transferred to another chamber for discharge purposes or moved into a drainfield that has been subjected to pressure.

The mound system, unlike the rest, is used in a site that has insufficient soil depth and is a mound. A mound is simply a drainfield that is slightly raised above the surface of the soil. It is, further, filled with a specific sand material. A gravel field is additionally situated within the sand and also in the network of pressurized pipes. The effluent is treated as it moves through the sand into the soil on the ground.




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