Septic tank consists of an enclosed and buried underground for the cleaning of domestic waste compounds (solids and liquids), being part of the sanitary sewage treatment system of most homes.
The septic tank consists of three interconnected enclosures. The water reaches the first, from where it decants and deposits at the bottom in the form of sludge, forming more matter. light, a foam on the surface and passing the water to the second room through holes to half height. In this enclosure, the entrained solids are decanted and the effluent passes to the third enclosure, where remains until it reaches the level necessary for its discharge over sand filters or filtering wells (sinks).
See also:meaning of decanting.
Septic tanks came to replace the black tank (rudimentary cesspool), a hole in the ground that receives all waste without any treatment. Many people still have this precarious sanitation system, which can be responsible for the spread of serious diseases.
A septic tank system with an anaerobic filter is intended to reduce the environmental impact of waste. The anaerobic filter assumes the function of a biological reactor, where anaerobic microorganisms will carry out the effluent purification. The anaerobic filter is made of plastic, fiberglass or reinforced concrete, that is, materials that present high resistance so that there is no loss of its content or the absorption of water found in its outdoors.
See also:meaning of liquid effluents.
Biodigestor Septic Tank
The biodigesting septic tank aims to replace common septic tanks at a low cost. Through this system, it is possible to produce biogas, and the biogas energy can be converted into electrical energy through generators. The biodigestion process has three phases: enzymatic, acidic and methanogenic hydrolysis. These phases ensure that disease-causing microorganisms are eliminated thanks to temperature variation.
See also:meaning of basic sanitation.
Septic tank and sink
Artificial sinks are wells that allow infiltration (penetration of liquids at the bottom of the well) and are usually constructed at a distance of approximately 3 meters from septic tanks. They are intended to receive liquid discharges that exceed the pits. These liquids, in turn, are accumulated in the sinks and, consequently, absorbed by the soil.
Learn more about meaning of sinkhole.
