From Memprotein Wiki
Septic water tanks are a method of treating water from properties that aren't connected to main drainage. You will find different types of septic system systems, which contain an underground septic system arriving different sizes and shapes. It connects to a secondary soil treatment system, which more often than not is a land drainage system in the form of a drain-field. Ground septic tanks use sewerage systems where raw sewage and wastewater discharge it to the tank. Here solids are separated from the liquid waste. Oils and fats float to the top of these plastic vertical tanks and form a crust layer with human waste and food scraps sinking to the bottom.
The waste at the bottom of the tank forms a sludge layer, which in turn encounters bacteria, which are the natural colonizers of plastic septic tanks that will digest more than sixty percent from the sludge. The dirty septic water flows from the tank towards the drain-field with �T� pipes within the plastic vertical storage tanks holding back the floating layer preventing it from accessing the outlet from the tank. Septic water tanks should be emptied annually to avoid sludge and crust layers from going too deep. This can help by preventing higher concentrations of suspended solids washing in the drain-field.
The �T� pipe belongs to the opening pipe in the second chamber of the tank, that is usually square. Vent pipes of ground septic tanks are usually installed in the first chamber along with the second one for the purpose of venting gases for example hydrogen sulphide and methane, that the sludge produces. Our recommendation is that strong covers be placed completely over plastic septic tanks to avoid animals or perhaps children from falling in to the tank. When these covers collapse, it may be with fatal results hence the need for strong covers.
Modern septic water tanks are made of polyethylene and GRP each of which are usually available in spherical shape with the top using a spherical shape which has a narrow shaft. They don't produce effluent similar in quality as two chamber tanks and are usually not put into front of many conversion units. You should be careful to make sure that throughout the emptying from the ground septic tanks in high water table sites problems don't occur because of the tank rising out of the ground. In this case our recommendation is that you install the tank with a concrete surround.
You ought to get a site in your residence or neighborhood that will be ideal for plastic septic tanks systems. A website with soil which contains an excessive amount of clay or that is too porous or which has the bedrock too close to the surface is not suitable. Clay soil soaks the septic effluent away while soil, which is too coarse will not support the effluent for very long periods so that it can be treated. In such instances, you can use a non-sewerage treatment plant although it may also be easy to adapt septic water tanks systems to match even unsuitable sites if meticulous planning and design is performed by an expert.