摘要
利用发光菌和大型蚤作为受试生物测定了北方某城市5个再生水原水(城市污水厂二级出水)和2个再生水处理系统的各工艺出水的急性毒性。结果表明,各再生水原水对大型蚤和发光菌具有不同程度的毒性效应,其中工业废水占较大比例的K和B厂再生水原水的大型蚤48 h总抑制率分别高达90%和100%,发光菌发光抑制率分别达到74.2%和46.5%。J、K 2个再生水处理系统各主要工艺对再生水进水的急性毒性有不同程度的消减,但加氯消毒和臭氧氧化处理后发光菌和大型蚤的急性毒性显著增强。2个方法均能反映再生水的毒性变化,本研究中采用的大型蚤结果更加灵敏。
The acute toxicities of influents of five reclaimed water plants（effluents from sewage treatment plants） and two reclamation facilities in a city in north China were investigated by using Photobacterium phosphorem T3 and Daphnia magna.The higher TIR48（total inhibitory rate of 48 hours for Daphnia） of 90% and 100%,LIR（luminescence inhibition rate for Photobacterium） of 74.2% and 46.5%,respectively,were found for the influents of reclaimed Plants K and B receiving high percentage of industrial wastewater.The acute toxicities of effluents were reduced to some degree after reclamation treatment processes in Plants J and K.However,the acute toxicities increased after chlorine disinfection or ozone treatment.Two methods can reflect the toxicity of reclaimed water,white the method of Daphnia is more sensitive.
出处
《环境工程学报》
CAS
CSCD
北大核心
2011年第5期977-981,共5页
Chinese Journal of Environmental Engineering
基金
国家"水体污染控制与治理"科技重大专项(2008ZX07314-003)
关键词
再生水
发光菌
大型蚤
急性毒性
reclaimed water
Photobacterium
Daphnia
acute toxicity
