目的 了解现有的三格式化粪池对粪便处理的卫生学效果,方法于2007年9月-2008年1月在重庆市某区A镇选择代表性的A村,采用单纯随机抽样方法对20所户厕及三格式化粪池进行现场调查,检测第三格粪水的卫生学和环境学指标.结果 本次抽样检测第三格粪水的pH值基本在8～9范围内,其合格率达85%,而其他指标的合格率普遍偏低,其中化学需氧量、氨氮和总氮的合格率仅5%,五日生化需氧量和总磷为10%,总悬浮和色度为15%,粪大肠菌群值均不合格.结论 本次调查的三格式化粪池后期管理有待改善,化粪池粪水若直接排放会造成环境二次污染,应采取措施进行深度处理.“,”Objective To perform a hygienic assessment of the three-chamber septic tanks and analyze the efficiency of non-hazardous treatment of feces and the impact on the environment, so as to provide the reference for the three-chamber septic tanks improvement test. Methods From September 2007 to January 2008, the 20 latrines of residents and the three-chamber septic tanks were selected by simple random sampling method from A village of A town , Chongqing , as the investigation point.with suitable economic conditions,the status of the latrines with three-chamber septic tanks were surveyed, and the hygienic and environmental indicators of the third chamber feces samples were detected. Results After the implementation of the three-chamber septic tanks, the rural ecological environment was improved. The samples test showed that pH value was basically in the range of 8-9, the qualified rate was 85%, as for the other indicators, the qualified rates were generally lower. The qualified rate of chemical oxygen demand, ammonia nitrogen and total nitrogen was only 5%, five-day biochemical oxygen demand and total phosphorus was 10%, SS and the color was 15%, fecal coliform value of the samples were not qualified. Conclusion The management of the three-chamber septic tanks needs to be improved. If the liquid dung of septic tanks was directly discharged, it will cause secondary environmental pollution.So it should be deeply treated.