化工进展

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精细化工废水的污染特性分析及其控制策略

韦朝海,何勤聪,帅 伟,任 源,成国飞,潘维龙   

  1. 华南理工大学环境科学与工程学院浙江省上虞市水处理发展有限公司
  • 出版日期:2009-11-05 发布日期:2009-11-05

Pollution characteristics and control strategies of fine chemical wastewater

WEI Chaohai,HE Qincong,SHUAI Wei,REN Yuan,CHENG Guofei,PAN Weilong   

  1. College of Environmental Science and EngineeringSouth China University of TechnologyShangyu Water Treatment Development Corporation
  • Online:2009-11-05 Published:2009-11-05

摘要: 针对精细化工废水处理难以稳定达标的现状,采用国家标准方法、离子色谱、ICP/MSGC/MS等分析手段研究了浙江省某工业园区精细化工废水的CODBOD、氨氮、色度等常规指标及主要阴阳离子和有机物组成,从化学与生物水平揭示了精细化工废水的污染特性,并提出了针对精细化工废水污染过程的控制策略。研究结果表明,精细化工废水是一种典型的有毒/难降解工业有机废水,呈现高COD、高氨氮及高色度等特征;精细化工废水中对微生物构成危害的主要成分有COD、氨氮、部分重金属离子、染料及其分解物等,重点是有机污染物;精细化工废水中的有机成分大多属于有毒/难降解有机污染物,对生物系统存在严重的抑制作用,是造成出水不达标的主要原因。因此,对精细化工废水的处理,应着重对有毒/难降解有机物进行优先控制,并综合考虑高效的处理工艺、合理的水质结构及有效的政策性策略。

Abstract: Fine Chemical wastewater is a typical industrial organic and non-biodegradable wastewater with high strength of CODammonia nitrogen and color. In order to improve the treatment efficiency of the wastewater from a Fine Chemical Industrial Park in Zhejiang Provinceseveral indexes including CODBODammonia nitrogencoloranionscationsheavy metals and organic compounds were analyzed by ion chromatographyICP/MSGC/MS and other regulatory analytical methods. The pollution characteristics of the fine chemical wastewater were revealed from chemical and biological analysis resultsthrough which the control strategies were proposed. Results indicated that CODammonia nitrogenheavy metalsdyes and their decomposition substances were the main toxic pollutants in the wastewater. The organic compoundswhich were determined as hardly biodegradable or toxic compoundsinhibit the micro-organismsso that the quality of outflow couldn’t satisfy the discharge criterion. Thereforethe treatment of fine chemical wastewater should prior consider the treatment of toxic compoundsthe process efficiencythe appropriate water quality structure and effective policy strategies.

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