03SY02-10 reinforced concrete septic tank
The septic tank is composed of three connected tanks, which are connected by a fecal pipe in the middle. It is mainly based on the principle that anaerobic fermentation, the proportion of the middle layer feces and parasite eggs is greater than the proportion of the general mixed liquid, which is easy to precipitate. After more than 30 days of fermentation and decomposition in the tank, the middle layer fecal liquid flows from one tank to three tanks in order to precipitate or kill insect eggs and intestinal pathogens. Fresh feces enter the first tank from the fecal inlet, and the feces in the tank begin to ferment and decompose. Due to different specific gravity, the fecal liquid can be naturally divided into three layers, the upper layer is paste shaped fecal skin, the lower layer is block shaped or granular fecal residue, and the middle layer is relatively clear fecal liquid. The upper dung skin and the lower dung residue contain the most bacteria and parasite eggs, and the middle layer contains the least worm eggs. The initially fermented middle layer fecal liquid overflows to the second tank through the dung pipe, while most of the unapproved dung skin and dung residue are kept in the first tank for further fermentation. The fecal liquid flowing into the second tank further ferments and decomposes, the eggs continue to sink, the pathogens gradually die, the fecal liquid is further harmless, and the fecal skin and fecal thickness produced are significantly reduced compared with the first tank. The fecal fluid flowing into the third pool has generally been decomposed, and the bacteria and parasite eggs have been basically killed. The third tank is mainly used to store the fecal liquid that has been basically harmless.
