What is the structure of the septic tank?

The structure of septic tank is as follows:

The underground part of three-compartment septic tank toilet consists of five parts: commode, manure inlet, manure hole, three-compartment septic tank, and slag removal port. Commode: processed and produced by the factory or prefabricated, the commode adopts the straight-through type, connected with the septic feed pipe, or water-sealed commode can be used, no longer installing the septic feed pipe.

1. The structure and function of the first tank of three compartments septic tank. Role: daily acceptance of fresh feces, anaerobic fermentation and decomposition of layered: the upper layer of fecal skin in the middle of fecal liquid and bottom layer of fecal slag, retention of sedimentation of parasitic eggs.

2. The structure and function of the second tank of three-compartment septic tank. Continuation of the first pool of retention and precipitation of parasitic eggs, deep anaerobic fermentation, free ammonia concentration rises, sterilization of eggs.

3. The structure and function of the third tank of the three compartments septic tank. The manure flowing into the third pool has generally been ripe, in which the germs and eggs have been basically killed and removed, can be used for fertilizer. The third pool function is mainly to store the role of manure.

Expanded information

Septic tank role

Septic tank is the basic sludge treatment facilities, but also the pre-treatment of sewage facilities, its role is manifested in:

1, to protect the environmental health of the living community, to avoid the spread of sewage and pollutants in the living environment.

2, in the septic tank anaerobic corrosion of the working environment, kill mosquitoes and flies eggs.

3, temporary storage of sludge, organic sludge for anaerobic putrefaction, cooked organic sludge can be used as agricultural fertilizer.

4, pre-treatment of domestic sewage (primary treatment), precipitation of impurities, and hydrolysis of macromolecules of organic matter into small molecules of organic matter such as acids, alcohols, etc., to improve the subsequent sewage treatment.

Reference:

Baidu Encyclopedia - Septic Tank