芦苇湿地对造纸废水中有机污染物的去除效果及机理

为了对芦苇湿地对造纸废水中有机污染物的去除效果及降解机理进行研究,本文采用GC-MS联用仪对经芦苇湿地处理前后造纸废水中有机污染物的组成和含量进行测定,并通过叠放色谱图的方法对造纸废水中有机污染物的降解效果进行分析。结果表明:(1)经芦苇湿地处理前造纸废水中共测出30种有机污染物,其中8种被列入美国EPA环境优先控制污染物黑名单。(2)纸浆造纸废水生物塘-芦苇湿地复合处理系统对有毒有机污染物基本上达到了较好的去除效果:有机污染物总量减少80%以上,且降解后的产物多为毒性较小的烷烃类。(3)利用质谱手段对有机污染物的降解规律进行了初步研究。该研究为造纸废水处理和资源化利用提供了科学依据,为"造纸废水-芦苇-造纸"生态纸业循环经济模式的进一步推广应用奠定了基础。

Efficiency and mechanism of reed wetlands to organic pollutants removal from papermaking wastewater

In order to study the organic pollutants removal efficiency and degradation mechanism of the reed wetlands for papermaking wastewater treatment,the GC-MS analysis was applied to measure the formation and content of the organic pollutants before and after the treatment.The chromatography superposition was applied so that the degradation efficiency was analyzed.The results showed that:(1)30 kinds of organic matters were found before the treatment and 8 of them were included in the blacklist of environmental priority pollutants recognized by EPA in USA.(2)The organic pollutants in papermaking wastewater were reduced more than 80% by reed wetland treatment,and most of the degradation products were harmless alkane.The toxic organic pollutants were removed preferably by the papermaking wastewater pond and reed wetlands complex processing system.(3) The organic pollutants degradation mechanisms were preliminarily studied by the means of mass.These results provided the scientific basis for utilization of papermaking wastewater resources and established the foundation for the popularization and application of ecological papermaking cyclic economy mode with "papermaking wastewater to reed to papermaking".