An insect fauna from a modern cesspit and its comparison with probable cesspit assemblages from archaeological sites

The insects recovered by sampling a present day disused cesspit located in south Shropshire are compared with similar assemblages from two sites in 16th century Worcester, and, as controls, with faunas from a modern compost heap and garden soil. A simple experiment is described designed to test whether stored product pest species could have arrived in archaeological deposits considered to be the sites of cesspits after having been eaten with the foodstuffs they were infesting.     

20世纪50～80年代河北省污水灌溉与农业生态环境问题述论

20世纪50～80年代河北省的污水灌溉经历了起步、曲折发展和步入科学化三个阶段。利用城市污水灌溉农田,一方面是污水资源化的体现,另一方面是污水无害化处理的措施,是解决环境问题很重要的举措之一,更是一种廉价的污水处理方法。工业化产生的大量污水日夜不息地排放,决定了利用土地净化污水方式存在的必然性。历史表明,这一时期的污水灌溉发展仍不成熟,理论研究滞后于实践,新污染问题的不断出现需要通过科技创新加以解决。