Minimum 1,000 gallons capacity of septic tank is sufficient for 3 bedroom house. Septic tank so big that should have the capacity to retain the household waste water at least for 3 days. Generally house hold septic tank are made of capacity to store 4000- 7500 litres or 1000 – 2000 gallons of effluent or semi solid sludge. What are septic tank? Septic tank are underwater sedimentation tank for the primary treatment of domestic wastewater and fecal material through the process of biological anaerobic digestion or decomposition and change into settleable solid or semi-solid sludge. Regarding this, “what is the septic tank?”, the septic tank is one chamber or multi- chamber underground compartment either made of RCC concrete, plastic, fiberglass or Steel used for primary treatment of anaerobic digestion of domestic wastewater, fecal material, toilet and excretory product that decompose and change into settleable solid or semi-solid sludge. What is septic tank?, Septic tank is scientifically well design underground chamber generally made of rcc or plain concrete, fiberglass, plastic or Steel through which domestic wastewater, fecal material, toilet and excretory product flows into it for primary treatment of waste material that decompose and change into settleable solid or semi-solid sludge. The term “ septic” generally refers to the anaerobic bacterial environment that developed in Tank and that decomposes or mineralize the domestic wastewater into the tank. This is a standard size of safety tank for household use and faecal sludge management. Safety tank size:- In rural and urban areas of India, the typical safety tank size is 1500 × 750 × 1000 mm (5 × 2.5 × 4 feet) in respect to their length, width and depth. As the Black Water flows through the septic tank, solid material settle at bottom of first chamber and Scum floats to the top. Scientifically design septic tank involves two or three chamber with an inlet to collect liquid wastages from pour flush cistern and outlet to expel the effluent to soakage pit or sewer. It is well designed rectangular or circular water tight structure provided with one, two or three chamber used to treat liquid wastes into high settleable solids.
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