GC-MS分析印染废水处理中有机污染物的降解特性

印染废水水量大、成分复杂、污染物浓度高,属于难处理的工业废水之一.以浙江某污水处理厂各处理单元废水为研究对象,应用气相色谱-质谱联用仪(GC-MS)分析了印染废水处理中有机物的降解过程.结果表明,初沉池、二沉池、终沉池水样中分别含有50、40、30种有机物,其中三氯甲烷、1,2-二氯乙烷、1,1,2-三氯乙烷等8种有机物属于环境优先控制污染物;筛选出苯乙酮、三氯甲烷、2-氯-2-甲基丁烷等5种物质作为印染废水的特征污染物.该结果对印染废水的处理与回用具有重要的意义.

Analysis on the degradation of organic pollutants in textile wastewater treatment process by GC-MS

Textile wastewater is intractable industrial wastewater because of its big quantity and high concentration of complicated constituents. The research object was the wastewater from each unit of a sewage treatment plant in Zhejiang province, and gas chromatography-mass spectrometry （GC-MS） was used to determine the degradation process of organic pollutants in treatment processes. The results show that wastewater samples from the primary settling tank, the secondary sedimentation tank and the final settling tank respectively contained 50, 40 and 30 kinds of organic matters, including chloroform, 1,2-dichloroethane, 1,1,2-trichloroethane and other eight kinds of organ- ic matters which belong to environmental priority control contaminants. Acetophenone, chloroform, 2 chloro-2-methyl butane and other five kinds of organic matters are chosen as the characteristic pollutants in textile wastewater. The research has important significance on the treatment and reuse of textile wastewater.