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[目的 ]进行双坑交替式农村旱厕的卫生学评价。 [方法 ]采集厕坑中间部位的混合样品 ,按 GB795 9-1987检测粪大肠菌群和蛔虫卵。 [结果 ]双坑交替式旱厕是由使用坑和封存坑组成的通风式农村户厕 ,粪便封存坑封存四个半月后 ,粪大肠菌值可提高 3.9× 10 - 3,蛔虫卵死亡率达 96 %以上。 [结论 ]经过一年的使用周期 ,使用坑和封存坑内的粪便可达到粪便无害化处理标准 ;此类型旱厕是适合在西北干旱与半干旱农村地区推广使用的一种无害化卫生厕所。
[Objective] To evaluate the hygienic evaluation of double-pit alternate rural aqua privies. [Method] The mixed samples in the middle part of latrine pit were collected and tested for fecal coliform group and roundworm egg according to GB795 9-1987. [Result] The double pit alternate aqueduct was ventilated type rural household toilet which consisted of using pit and sealing pit. After excrement storage pit was stored for four and a half months, the fecal coliform value could be improved by 3.9 × 10 - 3, and the ascaris egg death rate reached to More than 96%. [Conclusion] The standard of decontamination of excrement can be achieved by using the pit and pit excrement in the storage pit after one year of use cycle. This type of dry lavatory is a decontamination sanitary latrine suitable for popularization in the arid and semi-arid rural areas of Northwest China .