Study of removal effect on Mesocyclops leukarti with oxidants.
- Author:
Jin-long ZUO
1
;
Fu-yi CUI
;
Tao LIN
Author Information
1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. mdjzjl@163.com
- Publication Type:Journal Article
- MeSH:
Copepoda;
drug effects;
physiology;
Dose-Response Relationship, Drug;
Filtration;
methods;
Oxidants;
toxicity;
Survival Rate;
Water Pollutants;
isolation & purification;
Water Pollution;
prevention & control;
Water Purification;
methods
- From:
Journal of Zhejiang University. Science. B
2006;7(3):171-179
- CountryChina
- Language:English
-
Abstract:
Cyclops of zooplankton propagates prolifically in eutrophic waterbody and it cannot be exterminated by conventional disinfection process. The mutagenicity of Mesocyclops leukarti and its extermination with oxidants in a drinking waterworks in China were studied. Among five oxidants for use in bench-scale, chlorine dioxide is the most effective and the potassium permanganate is the weakest against Mesocyclops leukarti under the same conditions. Full-scale results showed that Mesocyclops leukarti could be effectively removed from water by 1.0 mg/L chlorine dioxide preoxidation combined with conventional removal physical process. After filtration, chlorite, a by-product of prechlorine dioxide, is stable at 0.45 mg/L, which is lower than the critical value of the USEPA. GC-MS examination and Ames test further showed that the quantity of organic substance and the mutagenicity in water treated by chlorine dioxide preoxidation are obviously less than those of prechlorination.
