Aerobic septic systems are a relatively new addition to the world of septic treatment solutions. These aerobic treatment systems utilize a number of different methods to break down waste and wastewater into an effluent that is generally of much higher quality than the effluent from a traditional anaerobic septic system. Because of this, the effluent from an aerobic system can be sterilized and used for surface irrigation, or the size of the drain field can be decreased because of the higher quality of the effluent. Aerobic septic systems are great for smaller lots without much space for a drain field, as well as areas where water use and re-use is a concern and priority.
The precise number of processes in aerobic septic systems depends on the exact nature of the system, the wastewater load it is expected to handle, the soil and terrain of the site, and whether the final effluent will be sent to a drain field or further sterilized for reuse in irrigation.
The aerobic treatment systems usually have four principal steps. First, a pre-treatment stage removes large solids and other undesirable substances from waste water; this is the most similar to a traditional anaerobic septic system. The second stage is the key aeration stage, where waste water passes through a space in which aerobic bacteria are alternately exposed to the waste water and to air, allowing them to further break down biological wastes in the water. The precise method varies from system to system, and aeration stages can be added to existing septic systems to improve overall function, counter system degradation, or increase the overall capacity of the system.
A settling stage follows the aeration stage, allowing undigested solids to settle. These wastes will periodically need to be cleaned from the system to ensure proper long-term function of the entire aerobic septic system. The last stage, which is optional, is a disinfecting stage during which chlorine or another disinfectant is mixed with the water to make an output that is antiseptic. The end of this process results in effluent that is easier for the soil to absorb and easier on the environment.
At Southern Water and Soil, we are dedicated to helping our customers find and implement the best solutions for all of their septic system needs. Please contact us today for more information.