双氧水协同生化法强化处理印染废水

发布时间：2018-06-02 08:27

本文选题：双氧水 + 水解酸化　；参考：《环境科学》2017年09期

【摘要】：传统生化法对印染废水的处理有一定的局限性.本文研究了双氧水协同水解酸化-接触氧化系统,对印染废水进行强化处理.采用污泥挂膜、生化系统启动、双氧水协同启动的方法,将双氧水投加到水解酸化时的条件严格控制为:投加3m L·L~(-1)、投加量100.0 m L、流速0.67 m L·min-1、投加频率1次·d-1,可使整个系统成功启动与稳定运行.实验结果表明,双氧水协同水解酸化-接触氧化可对印染废水中的特征污染物进行有效强化处理.其中,COD平均去除率为89.8%,氨氮平均去除率为96.7%,PVA平均去除率为87.4%,废水平均脱色率为92.1%.采用16S rDNA宏基因组高通量测序技术,对比分析了接种种泥、水解酸化污泥和接触氧化污泥微生物的群落结构.结果表明,经过驯化,水解酸化和接触氧化微生物群落均发现了显著变化.其中,水解酸化污泥优势菌门主要为变形菌门Proteobacteria、拟杆菌门Bacteroidetes和疣微菌门Verrucomicrobia;接触氧化污泥优势菌门主要为浮霉菌门Planctomycetes、变形菌门Proteobacteria和酸杆菌门Acidobacteria.该实验从宏观和微观角度,均证实双氧水协同生化法强化处理印染废水具有技术可行性.
[Abstract]:The traditional biochemical method has some limitations on the treatment of printing and dyeing wastewater. In this paper, the synergistic hydrolytic acidification-contact oxidation system of hydrogen peroxide was studied to enhance the treatment of printing and dyeing wastewater. The sludge membrane was suspended, the biochemical system was started, and the hydrogen peroxide was co-started. The conditions of adding hydrogen peroxide to hydrolytic acidification are as follows: add 3m L / L ~ (-1), add 100.0 mL / L, flow rate 0.67 mL / min ~ (-1), add frequency once / d ~ (-1), make the whole system start up successfully and run stably. The experimental results show that hydrogen peroxide synergistic hydrolysis acidification-contact oxidation can effectively enhance the treatment of characteristic pollutants in printing and dyeing wastewater. The average removal rate of COD was 89.8, the average removal rate of ammonia nitrogen was 96.7and the average removal rate of PVA was 87.4.The average decolorization rate of wastewater was 92.1. High throughput sequencing technique of 16s rDNA macrogenome was used to compare and analyze the community structure of microbes inoculated with seed mud, hydrolyzed acidified sludge and contact oxidized sludge. The results showed that significant changes were found in microbial communities of hydrolytic acidification and contact oxidation after acclimation. Among them, the dominant bacteria of hydrolytic acidification sludge were Proteobacteria, Bacteroidetes and Verrucomicrobia, and the dominant bacteria in contact with oxidized sludge were Planctomycetes, Proteobacteria and Acidobacteria. From both macroscopic and microscopic point of view, this experiment proved the technical feasibility of enhancing printing and dyeing wastewater treatment with hydrogen peroxide synergistic biochemistry method.
【作者单位】：广州中国科学院沈阳自动化研究所分所;
【基金】：广东省科技计划项目(2016B090918036)
【分类号】：X791

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