化粪池是基本的污泥处理设施，同时也是生活污水的预处理设施，它的作用表现在：
The septic tank is the basic sludge treatment facility and also the pretreatment facility of domestic sewage. Its functions are as follows:
1、 保障生活社区的环境卫生，避免生活污水及污染物在居住环境的扩散。
1. Guarantee the sanitation of the living community and avoid the diffusion of domestic sewage and pollutants in the living environment.
2、 在化粪池厌氧腐化的工作环境中，杀灭蚊蝇虫卵。
2. To kill mosquito and fly eggs in the working environment of anaerobic decomposition in septic tank.
3、 临时性储存污泥，有机污泥进行厌氧腐化，熟化的有机污泥可作为农用肥料。
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xingcai.37ix.com.cngaiban.37ix.com.cnrunhuaji.37ix.com.cnmporary storage of sludge, anaerobic decomposition of organic sludge, matured organic sludge can be used as agricultural fertilizer.
4、 生活污水的预处理（一级处理），沉淀杂质，并使大分子有机物水解，成为酸、醇等小分子有机物，改善后续的污水处理
4. Pretreatment of domestic sewage (primary treatment), precipitation of impurities, hydrolysis of macromolecule organic matter into small molecule organic matter such as acids and alcohols, and improvement of subsequent sewage treatment