辽河流域印染行业重点排污河段有机污染物的定性分析

Qualitative Analysis of Organic Pollutants in Key Receiving Waterbody of Effluents from Printing and Dyeing Industries in Liaohe River Basin

  • 摘要: 通过对辽河流域印染行业污染源普查数据进行归纳分析,在确定重点排污河段的基础上,采用固相萃取-气相色谱-质谱联用(SPE-GC-MS)对相关纺织工业园区的废水处理厂出水及受纳水体各断面的有机污染物进行了定性分析。结果表明,海城河是印染企业重点排污河段,其废水和CODCr接受量分别占印染行业总排放废水的51%和40%;在废水处理厂出水中,共检出48种有机污染物,主要为含氮杂环类、胺类、取代苯类和醇类;在海城河各断面均有不同种类的有机污染物被检出,尤其是在海城河下游,含氮杂环类和取代苯类污染物居多。在检出的有机污染物中,有9种是被我国或美国列入优先控制的污染物(邻苯二甲酸二甲酯、邻苯二甲酸丁酯、邻苯二甲酸二正辛酯、对二甲苯、苯胺、对二氯苯、4-硝基甲苯、2,4-二硝基甲苯和萘)。

     

    Abstract: The key receiving waterbody of effluents discharged from printing and dyeing industries in the Liaohe River Basin was identified based upon the national statistic data of the industrial pollution census. The SPE-GC-MS technique was used to qualitatively determine organic pollutants in effluents from a local integrated wastewater treatment plant (WWTP) within the textile industrial park and also from different sampling sites along the freshwater. The results show that the Haicheng River is a key receiving waterbody for the effluents discharged from printing and dyeing industries. There are 48 organic pollutants in the effluent, which mainly include types of N-heterocycles, aliphatic amines, substituted benzenes and alchohols. The diversity of organic pollutants is also observed in each selected section of the Haicheng River, and in the site of downstream, the majority of pollutants is composed of N-heterocycles and substituted benzenes. There are 9 well-known toxic pollutants, i.e. dimethyl phthalate(DMP), dibutyl phthalate(DBP), di-n-octyl phthalate, p-xylene, aniline, p-dichlorobenzene, 4-methyl nitrobenzene, dinitrotoluene and naphthaline that are in both US EPA and Chinese priority pollutant list.

     

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