为了解决城市粪便对环境的污染,四川省宜宾市沼气建设办公室设计了一种沼气化粪池,用它取代敞口粪坑,采用常规厌氧—好氧发酵工艺处理粪便,排出液清亮,无臭味,主要卫生指标达到和接近现行部颁排放标准(见下表),同时还取得了能源——沼气。一九八三年九月至一九八五年九月,全市已有33个单位修建了265口沼气化粪池,总容积3017立方米,每天处理粪便量33吨,占全市粪便量的15.5％。 In order to solve the environmental pollution caused by urban manure, the biogas construction office in Yibin, Sichuan Province has designed a biogas septic tank to replace the open manure pit with conventional anaerobic-aerobic fermentation to treat the excrement with clear and odorless effluent Taste, major health indicators have reached and are close to the current ministerial emission standards (see table below), while also obtaining energy - biogas. From September 1983 to September 1985, a total of 265 marsh gas septic tanks have been constructed in 33 units in the city with a total volume of 3,017 cubic meters. Each day, 33 tons of manure were processed, accounting for 15.5 %.