漂白废水中关键有毒物质鉴别的实例研究

应用生态学报 ›› 2001, Vol. ›› Issue (3): 458-460.

漂白废水中关键有毒物质鉴别的实例研究

于红霞, 程静, 金洪钧

南京大学环境学, 污染控制与资源化研究国家重点实验室, 南京210093

收稿日期:1999-11-23 修回日期:2000-06-16 出版日期:2001-05-25
通讯作者: 于红霞,女,1963年生,硕士,副教授,从事有机污染物化学和生态毒理学研究,发表中英文论文20余篇.E-mail:fengjf@nju.edu.cn
基金资助:
中英合作项目;江苏省自然科学基金(BK9704);江苏省环保局资助项目(9728)

Identification of key toxicants in a bleaching effluenta case study

YU Hongxia, CHENG Jing, JIN Hongjun

School of the Environment, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210093

Received:1999-11-23 Revised:2000-06-16 Online:2001-05-25

摘要/Abstract

摘要： 以纸张漂白废水为研究对象,采用毒性鉴别评价(TIE, Toxicity Identification Evaluation)技术对其生态毒性原因作了鉴别研究.结果表明,废水对大型蚤(Daphnia magna)具有急性毒性,曝气可去除废水的部分毒性,硫代硫酸钠的投加可去除废水毒性,同时用DPD试剂盒比色法可测出游离态氯气和一价氧化态氯化物.通过毒性鉴别评价阶段的研究,揭示了导致废水毒性的关键毒物是氯气、次氯酸和次氯酸根.

Abstract: The toxicity identification evaluation (TIE) was conducted with a toxic bleaching effluent to identify its toxic components. Toxicity characterisation procedures (phase Ⅰ) indicated that the primary toxicants in the effluent were volatile,and could be reduced by sodium thiosulfate. Toxicity based fractionation techniques (phase Ⅱ) were conducted,and the oxidation organic chloridates were found not to be the major toxicants.Deletion approach of phase Ⅲ confirmed that the toxicity decreased with the decrease of free and total residual chlorine concentrations,indicating that Cl₂, HClO and ClO were identified as primary toxicants in the effluent.

中图分类号:

Xl71.5

于红霞, 程静, 金洪钧. 漂白废水中关键有毒物质鉴别的实例研究[J]. 应用生态学报, 2001, (3): 458-460.

YU Hongxia, CHENG Jing, JIN Hongjun . Identification of key toxicants in a bleaching effluenta case study[J]. Chinese Journal of Applied Ecology, 2001, (3): 458-460.

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