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人畜粪尿经沼气池处理后,有较好的卫生效果。经观察,发酵池内的粪液均分为三层:沉渣(下层),发酵液(中层),粪皮(上层)。据测量,血吸虫卵、钩虫卵和蛔虫卵的比重(分别为1.200、1.060和1.140)均大于沼气池粪液比重(1.005～1.010),故90％的虫卵被截留于沼气发酵池的粪渣与粪皮之中,仅有10％的虫卵随中层粪液流入出料池。出料池虫卵的立体分布调查表明,约80％的虫卵沉淀于底部,中层约占18％,经常使用的上层粪液仅有2％的虫卵,上海、湖南调查单口沼气池出料口粪液虫卵减少率仅60％,而四川、江苏、浙江等省的沼气池,由于设计合理,出料口
Human and animal manure after digester treatment, have better health effects. It was observed that the excrement in the fermentation tank was divided into three layers: sediment (lower), fermentation broth (middle) and manure (upper). According to the measurement, the specific gravity of schistosome eggs, hookworm eggs and roundworm eggs (1.200, 1.060 and 1.140 respectively) is larger than that of biogas digester (1.005-1.010), so 90% of the eggs are trapped in the dung of the biogas fermentation tank Among the slag and manure, only 10% of the eggs flow into the discharge pool with the middle layer of manure. The investigation of the three-dimensional distribution of eggs in the spout showed that about 80% of the eggs settled at the bottom, the middle accounted for about 18%, and the commonly used supernatant was only 2% of the eggs. Mouth drop liquid egg reduction rate of only 60%, while Sichuan, Jiangsu, Zhejiang and other provinces of digesters, due to the design, the discharge port