双氧水协同生化法强化处理印染废水
Enhanced Treatment of Printing and Dyeing Wastewater Using H_2O_2- Biochemical Method
查看参考文献35篇
文摘
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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3 mL·L~(-1)、投加量100.0 mL、流速0.67 mL·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. |
其他语种文摘
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The traditional biochemical treatment of printing and dyeing wastewater has limited efficiency. This study investigated whether H_2O_2 could strengthen the biological ability of the hydrolytic acidification /biological contact oxidation process (A/O),which effectively treats the printing and dyeing wastewater. After biofilm formation and the biochemical system startup and operation by H_2O_2, the system was successfully started and steadily operated when H_2O_2 was added into reactor A with the H_2O_2 voluve fraction of 3 mL·L~(-1),doses of 100.0 mL,the flow velocity of 0.67 mL·min~(-1),and dosing frequency of once a day. The experimental results showed that the average removal efficiencies of COD,ammonia nitrogen,PVA,and color of printing and dyeing wastewater were 89.8%,96.7%,87.4%,and 92.1%,respectively. The microorganism community structures of reactor A and reactor O in this system were analyzed by high-throughput sequencing of 16S rDNA amplicon. The results demonstrated that the three dominant microbial strains in reactor A were Proteobacteria,Bacteroidetes,and Verrucomicrobia,and in reactor O were Planctomycetes, Proteobacteria,and Acidobacteria. |
来源
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环境科学
,2017,38(9):3769-3780 【核心库】
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DOI
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10.13227/j.hjkx.201702192
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关键词
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双氧水
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水解酸化
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接触氧化
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印染废水
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16S rDNA宏基因组测序
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微生物群落结构
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地址
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广州中国科学院沈阳自动化研究所分所, 广州, 511458
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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0250-3301 |
学科
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行业污染、废物处理与综合利用 |
基金
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广东省科技计划项目
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文献收藏号
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CSCD:6063613
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