human
How does a septic system work?
assistant
A septic tank is a large holding tank that collects waste from the home. It has a pump and drain field where the liquid waste is pumped out of the tank and into the drain field, which is usually made up of gravel and soil. The solids in the wastewater are allowed to settle in the tank and then the liquid is sent to the drain field. This process allows for the separation of liquids and solids so they can be treated separately. The liquid is then filtered through a series of filters before being discharged into the environment. The solids are removed from the tank by a mechanical device called a septic tank pump, and then taken away for treatment or disposal.