论文部分内容阅读
1986～1988年期间,经时全省五种不同类型粪便处理设施的无害化效果评价及各项检测表明,五种粪便处理设施以三联通沼气池达标率最高,其中粪大肠值和寄生虫卵沉降率均达到国家粪便无害化卫生标准的要求。其次为三格化粪池厕所和双瓮漏斗厕所,粪大畅菌值和U寄生小卵沉降率均接近粪便无害化卫生标准要求,而瓦瓮式厕所效果较差。五个粪便处理区,均可提高当地饮水卫生质量,减低土壤中寄生虫卵的污染水平,并可有效地降低成蝇密度,使肠道传染病发病率比未管粪的对照区同期下降27.25%、36.60%、51.77%。其效益与费用(BCR)的比值分別为:沼气池0.76;三格化粪池0.32;双瓮漏斗式厕所Ⅰ和Ⅱ型分别为4.66、2.49;瓦瓮式厕所3.55。
From 1986 to 1988, the detoxification evaluation and testing of five different types of excrement disposal facilities in the province at the time indicated that the five stool treatment facilities reached the highest rate with Sanlian Tong biogas tank, in which the fecal colorectal value and parasites The rate of egg deposition has reached the national standards for the safe use of manure. Followed by a three-compartment septic tank toilet and double urn funnel toilet, toilet manure value and U parasite sedimentation rate are close to the health standards of decontamination standards, and tile urn toilets less effective. The five excrement disposal areas can improve local hygienic quality of drinking water and reduce the level of parasite eggs in the soil and can effectively reduce the density of adult flies so that the incidence of intestinal infectious diseases will drop by 27.25 over the same period %, 36.60%, 51.77%. The ratio of benefits to costs (BCR) was 0.76 for biogas digesters and 0.32 for three-cell septic tanks respectively. The double urn funnel-type toilets type I and II were 4.66 and 2.49 respectively, and the urn-style toilets were 3.55.