Aerobic Septic System

A large space and porous soil are the two essential requirements of conventional septic systems. However, every site may not be equipped with these basic requirements. In such cases, installing conventional systems is not a viable option. As aerobic septic systems don't demand any such prerequisites, they can be considered an ideal option in such situations.

These systems inject oxygen in the sewage water to stimulate the growth of aerobic microorganisms, that break down the waste materials so as to facilitate further treatment of effluents. However, these septic systems are not the best option available as there are certain installation and maintenance issues associated with them.

The system works in two stages, with the first stage being similar to anaerobic systems. An air pump, rotor, and agitator are some of the important parts in a basic two chamber system. The waste water flows into the septic tank, where the effluents are separated by an agitator. T

he solid waste materials gather at the bottom of the tank, whereas the liquid waste materials flow into the second chamber. Air is constantly blown into this chamber so that air bubbles are formed within the effluent. This oxygenated air promotes the growth of aerobic bacteria, which breaks down the waste water.

The processed water is then sterilized with chemical reagents and flows out of the system through pipes. An aerobic system is less time-consuming as compared to a conventional septic system as air is continuously blown in, and the process is continuous with quick results.

It can be installed above or below the ground level. The initial installation cost of an aerobic system is several times that of a conventional system. Moreover, you will have to pay for additional excavation if you are installing it below the ground level. The site may need prior treatment, which may again add up to the installation cost.

You will have to make provisions for electrical connections and maintenance. The cost of an aerobic septic system is greatly dependent upon the size of the unit, location of installation, and the complexity of the system. Even after the installation is complete, you will still have to bear the cost of electricity consumption as well as regular maintenance.

One of the most important problems is the need for routine maintenance. If you fail to maintain the system, it may pose severe hazards to the surrounding environment. Ambient temperature has to be maintained throughout. The efficiency of the system may be affected if the temperature is too low. Also, the balance of bacteria must not be disturbed at any cost.

This can be particularly tedious for home owners, as they have to be careful about the cleaning products they use in their toilets. Cleaning agents, such as bleach, can kill the aerobic bacteria, thereby disturbing their balance.

Also, pouring down harmful chemicals through the drain can kill the bacteria and upset the biological balance inside the tank. The performance of the system may diminish if it is not maintained regularly. Turning off the system may result in several health hazards as there is a likelihood of spread of diseases to the neighborhood.

Although aerobic septic systems are efficient and deliver a high performance, they demand responsible use on the part of home owners. Due to their potential threat to the environment, some municipalities deny the permission to install them. Hence, you must check your neighborhood laws and codes to ensure if you can install the system at your home.