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| Removal property and toxicity research on zebrafish of the disinfection-byproduct—dichloroacetamide |
| CAO Wen-ping1, ZHAO Xin2, WANG Guo-xiang3, WANG Yin-mei1 |
1. School of Water Resource and Environmental Engineering, East China University of Technology, Nanchang 330013, China;
2. School of Environment, Hohai University, Nanjing 210000, China;
3. School of Environment, Nanjing Normal University, Nanjing 210023, China |
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Abstract Dichloroacetamide is anitrous disinfection-byproduct in drinking water treatment plant, which is harmful to human health. In this work, zebrafish was used as the target organim to explore effect of dichloroacetamide on zebrafish in developmental and accumulative toxicity. Experimental results document that the highest dichloroacetamide concentration in effluent from drinking water treatment plant of Luoma Lake was 1.72μg/L, which is far lower than that from in Weishan Lake with 2.6μg/L. Comparing conventional treatment process suggests that advanced unit of ozone combined with granular-activated carbon achieved higher efficiency for dichloroacetamide removal ratio, which reached at about 64%. Dichloroacetamide could cause malformation effects on embryo zebrafish and could cause stronger toxicity effects on neuron than that on circulation system of embryo zebrafish. Dichloroacetamide also could cause accumulative toxicity on zebrafish liver and its accumulative toxicity was proportional to lipid content, which should be strictly controlled.
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Received: 12 July 2016
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