Disinfection of hospital waste sludge using hypochlorite and chlorine dioxide
Disinfection of hospital waste sludge using hypochlorite and chlorine dioxide
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DOI：
10.1046/j.1365-2672.1999.00732.x
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发表时间：
1999-05-01
影响因子：
4
通讯作者：
Lin, ST
中科院分区：
文献类型：
--
作者：
Tsai, CT;Lin, ST
采用次氯酸盐和二氧化氯对医院污水污泥进行消毒。比较了它们对病原微生物的灭活能力。估计了本土大肠菌群和铜绿假单胞菌的减少。结果表明，次氯酸盐是一种优于二氧化氯的大肠菌群消毒剂。较低浓度的污泥处理可获得较高的消毒效率。此外，搅拌速度越高，次氯酸盐的杀菌效率越高。两种消毒剂对沉降污泥的消毒效果均高于对浓缩污泥的消毒效果。因此，建议对沉淀的污泥进行消毒，而不是在浓缩池中进行消毒。
Hypochlorite and chlorine dioxide were used to disinfect hospital waste-water sludge. Their abilities to inactivate pathogenic microorganisms were compared. Reductions in indigenous coliform organisms and Pseudomonas aeruginosa were estimated. The results indicate that hypochlorite is a better disinfectant than chlorine dioxide for coliforms. Higher disinfection efficiency was obtained by treating a lower concentration of sludge. In addition, a higher agitation speed gave a higher disinfection efficiency with hypochlorite. The disinfection efficiencies of both disinfectants were higher against settled sludge than against thickened sludge. Therefore, it is recommended that disinfection should be performed on settled sludge rather than in a thickening tank.