摘要
污泥污水中集聚了大量病原体。本研究对污泥 -土壤 -蔬菜这一链条中的各环节微生物存活量与辐照处理的关系逐一进行试验分析。结果表明 :污水经 5～ 6kGy辐照可使大肠菌群约降低 3个数量级 ,1kGy辐照可全部杀灭蛔虫卵 ,达到农田灌溉水水质卫生标准。辐照处理后的污泥施入土壤内 ,土壤内细菌总数、大肠菌群也降低 1个数量级 ,且未检测到存活的蛔虫卵 ,青菜上的大肠菌群检出率极低 ,基本达到生食类食品的卫生指标。
A large quantities of pathogenic organisms were found in sewage sludge. An investigation was carried out on the relationship in the chain of sludge-soil-vegetable between the survival of pathogenic organisms and the irradiation dosage. After irradiation with 5～6kGy, coliform group reduced 3 log cycles, and ascarid ova were completely eliminated with a dose of 1kGy, making the water matched the standard quality of irrigating water. In the soil applied with irradiated sewage sludge, the total bacteria and coliforms group count reduced to one tenth, and alive ascarid ova was not detected. The coliform group on the Chinese cabbage was extremely low and reached the standard of fresh eating.
出处
《核农学报》
CAS
CSCD
北大核心
2005年第2期129-133,共5页
Journal of Nuclear Agricultural Sciences
基金
江苏省环保科技计划项目 (990 3 )
