铁炭微电解对ABS树脂生产废水中典型特征污染物的降解

摘要

为分解转化ABS树脂生产废水中的有毒难降解特征污染物并提高废水的可生化性,采用铁炭微电解法处理该废水,并利用气质联用色谱检测分析废水中典型特征污染物的分解转化.结果表明微电解系统能高效地分解废水中3-(二甲氨基)-丙腈、3-(二乙氨基)-丙腈、2-氰基乙醚、双(2-氰基乙基)胺、3,3-硫代丙二腈、苯乙烯、苯乙酮、2-苯异丙醇等8种典型的芳香类和有机腈类化合物.同时,微电解系统对废水TOC的去除率在40％～ 46％,NH3-N生成率稳定在45％ ～55％,并将废水的ρ(BOD5)/ρ(COD)值由0.32提高至0.71,提高了废水的可生化性.%In order to decompose and transform the toxic refractory typical pollutants in ABS (acrylonitrile-butadiene-styrene) resin wastewater, the micro-electrolysis technology was used to pretreat the ABS resin wastewater. The decomposition and transformation of the typical pollutants in ABS resin wastewater was analyzed by GC-MS chromatogram. The results show that the micro-electrolysis can degrade 8 kinds of typical aromatics and organic nitriles efficiently, such as styrene, acetophenone, α, α-dimethylbenzenemethanol, 3, 3-oxydipropionitrile, 3, 3'-iminodipropionitrile, 3, 3'-thiodipropionitrile, 3-dimethylaminopropanonitrile and 3-diethylaminopropiononitrile. The TOC removal efficiency and NH3-N generation rate of ABS resin wastewater were 40% - 46% and 45% - 55% , respectively. And the BOD5/COD ratio was increased from 0. 32 to 0. 71, the biodegradability of the wastewater was improved.