印染废水处理过程中污染物及毒性分析

Analysis of pollutant and toxicity of textile wastewater in treatment process

应用水解酸化—A/O(生物活性炭法(PACT))—混凝沉淀组合工艺处理印染废水,深入研究该组合工艺各反应段对印染废水污染物的处理情况,分别用电感耦合等离子光谱(AES/ICP)、气相色谱/质谱联用(GC/MS)以及发光细菌法对各反应段出水所含金属元素、有机物以及毒性进行检测。结果表明,水解酸化—A/O(PACT)—混凝沉淀组合工艺可以有效降解印染废水所含污染物,降低其毒性。

Combined treatment which including 3 stages of hydrolytic acidification, A/O（PACT） and coagulation sedimentation were performed on textile wastewater. The metabolic product from each treatment section was characterized by AES/ICP, GC/MS and photobacteria method. The results showed that there was neglect of metal ions in the textile wastewater; toxicity of the wastewater was mainly from the organic pollutant. Microbial metabolic was stable in the hydrolytic acidification process, which means textile wastewater toxicity had little effect on biochemical process. The combined process could degrade the pollutant and reduce the toxicity of textile wastewater effectively.