刘聪;陈吕军;朱小彪;马德华;

• 1:清华大学环境学院
• 2:浙江省水质科学与技术重点实验室
• 3:浙江清华长三角研究院

摘要(Abstract)：

焦化废水中含有大量毒性物质,具有较强的生物毒性。本文以实验室构建的A2/O焦化废水处理系统为研究对象,考察废水处理过程化学成分和急性毒性的变化。采用紫外扫描和三维荧光光谱分析考察了处理系统各阶段出水的物质组分,并采用固相萃取和超滤膜分离等手段对水样各组分的发光细菌急性毒性进行研究。结果表明,伴随着芳香族物质等毒物的去除,焦化废水的急性生物毒性在该处理系统中被逐步削减,最终出水的毒性当量仅为原水的28%;不同组分的生物毒性测试结果显示,废水水样的强极性和中等极性有机组分贡献了绝大部分的毒性当量,而这些物质主要在缺氧段及好氧段被削减;结合三维荧光光谱的分析结果,可推断焦化废水中一类很难在A2/O处理系统中被完全去除的芳香族蛋白质类似物(Ⅱ区)很可能具有较强的生物毒性,是构成出水毒性的主要物质。

关键词(KeyWords)： 焦化废水;A2/O工艺;急性毒性;组成变化;因果关系分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51308319)

作者(Author): 刘聪;陈吕军;朱小彪;马德华;

Email:

DOI:

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