【摘要】 选取亚硫酸钠为脱氯剂,利用发光细菌法考察了脱氯作用对降低由余氯引起的生物毒性的效果。结果表明,经氯化消毒后污水的生物毒性明显增强,这主要是由消毒副产物引起的;投加脱氯剂可减小甚至消除由副产物引起的急性毒性,其最可能原因是脱氯剂与一部分副产物反应而生成了毒性较小甚至没有毒性的物质。更多还原

【Abstract】 By selecting sodium sulfite as dechlorinating agent, photobacteria method was used to investigate the effect of dechlorination on reduction of biotoxication incurred by residual chlorine. It was found that the biotoxication of wastewater after chlorine disinfection is increased remarkably, which mainly results from the disinfection byproducts. Addition of dechlorinating agent can reduce or eliminate the acute toxicity caused by disinfection byproducts. It may be because that the reaction of dechlorinating agent with part of byproduct results in the formation of materials with less toxicity or without toxicity.更多还原