Septic tank is a structure for storing sewage. When there is water, there are all kinds of gases. Setting exhaust holes with appropriate aperture is beneficial to sludge removal and transportation.

Septic tank belongs to the most primary sewage treatment stage, with only 50% suspended impurities (feces, serious protozoa, etc.). ). Sludge can be decomposed into a stable state under anaerobic conditions and used as agricultural fertilizer after solidification.

General requirements for septic tank site selection

(1) The toilet should be as close to the living room as possible, so that the toilet can enter the courtyard, which is convenient for application and management.

(2) The bathroom should be built in the downwind direction of the bedroom and kitchen.

(3) Sanitary toilets should be as far away from wells or other underground water pipe networks as possible.

(4) Toilet houses can use original walls such as houses and fences to reduce costs.

(5) The underground part of the toilet should be built outside the house or outside the fence, which is conducive to maintenance, excrement discharge and slag removal.

(6) Toilet construction should conform to the village construction plan and should not be built on both sides of the road.

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