1. Choose the site according to the specifications, sprinkle lime lines according to the size and shape of septic tanks, and leave brick or cast-in-place areas around.

2. The wall of cement septic tank should be carried out according to a certain size. Two separation walls must be built in the middle of three septic tanks. When laying the wall, the excrement discharge pipe should be buried in advance.

3. The cover of 3.Anchi must use reinforced concrete. The first cover of Anchi needs to reserve two excreta outlets, two excreta outlets, two sewage outlets, two excreta outlets and three excreta outlets.

4. Set the dung suction pipe and bucket.