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Role of septic tanks
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：
Septic tanks are the basic sludge treatment facilities, but also domestic sewage pretreatment facilities, its role in:
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, ensure the environmental hygiene of living communities 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. Kill the mosquitoes and flies eggs in the anaerobic environment of septic tanks.
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。
3. Temporary storage of sludge, anaerobic decomposition of organic sludge, mature 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, and hydrolysis of macromolecular organic matter into acid, alcohol and other small molecular organic matter, improve the subsequent sewage treatment.