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KMnO4预氧化强化混凝工艺处理黑臭水的试验研究

刘亚南,  杨延梅,  李君超,  王宏亮,  谭伟,  王凯,  董丽伟,  蒋进元

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文章导航 > 环境工程技术学报  > 2019 >  9(1): 82-88
刘亚南, 杨延梅, 李君超, 王宏亮, 谭伟, 王凯, 董丽伟, 蒋进元. KMnO4预氧化强化混凝工艺处理黑臭水的试验研究[J]. 环境工程技术学报, 2019, 9(1): 82-88. doi: 10.3969/j.issn.1674-991X.2019.01.012
引用本文: 刘亚南, 杨延梅, 李君超, 王宏亮, 谭伟, 王凯, 董丽伟, 蒋进元. KMnO4预氧化强化混凝工艺处理黑臭水的试验研究[J]. 环境工程技术学报, 2019, 9(1): 82-88. doi: 10.3969/j.issn.1674-991X.2019.01.012
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LIU Yanan, YANG Yanmei, LI Junchao, WANG Hongliang, TAN Wei, WANG Kai, DONG Liwei, JIANG Jinyuan. Study on treatment of black and odorous water by KMnO4 pre-oxidation enhanced coagulation process[J]. Journal of Environmental Engineering Technology, 2019, 9(1): 82-88. doi: 10.3969/j.issn.1674-991X.2019.01.012
Citation: LIU Yanan, YANG Yanmei, LI Junchao, WANG Hongliang, TAN Wei, WANG Kai, DONG Liwei, JIANG Jinyuan. Study on treatment of black and odorous water by KMnO4 pre-oxidation enhanced coagulation process[J]. Journal of Environmental Engineering Technology, 2019, 9(1): 82-88. doi: 10.3969/j.issn.1674-991X.2019.01.012
shu

KMnO4预氧化强化混凝工艺处理黑臭水的试验研究

doi: 10.3969/j.issn.1674-991X.2019.01.012

  • 1. 重庆交通大学,国家内河航道整治工程技术研究中心,重庆 400074

  • 2. 中国环境科学研究院,北京 100012

详细信息
    作者简介:

    刘亚南(1990—),男,硕士,研究方向为水处理控制技术, 854857526@qq.com

    通讯作者:

    蒋进元 E-mail: jiangjy@craes.org.cn

  • 中图分类号: X703

Study on treatment of black and odorous water by KMnO4 pre-oxidation enhanced coagulation process

  • 1. National Engineering Research Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing 400074, China

  • 2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China

More Information
    Corresponding author: Jinyuan JIANG E-mail: jiangjy@craes.org.cn

    摘要
  • 摘要: 研究了KMnO4预氧化与混凝工艺组合去除黑臭水CODCr、UV254和浊度效果,分析多种混凝剂混凝处理黑臭水的絮凝性能,并对比分析投加KMnO4前后的去除效果。结果表明:聚硅酸铁镁混凝剂对黑臭水浊度的去除效果优于聚合氯化铝和氯化铁混凝剂;SEM表征结果发现,聚硅酸铁镁呈紧簇团聚树枝状,能增强混凝过程中的吸附架桥和网捕等功能。KMnO4预氧化能强化聚硅酸铁镁混凝剂去除有机污染物,在水样pH为8.0,KMnO4投加浓度为25 mg/L,预氧化时间为25 min时,CODCr去除率最高,可达81.76%,比单一混凝工艺提高了12.15个百分点;UV254去除率最高可达49.44%,较单一混凝工艺提高了11.71个百分点;投加KMnO4前后,浊度去除率均在90%以上。

     

    Abstract: The removal effect of organic pollutants in black and odorous water by KMnO4 pre-oxidation combined with conventional coagulating sedimentation treatment processes was studied. The flocculation performance of various coagulant flocculation treatment was analyzed, and the removal effects of CO$D_{Cr}$, UV254 and turbidity before and after adding potassium permanganate compared and analyzed. The test results showed that KMnO4 pre-oxidation technology could strengthen the poly ferric magnesium silicate (PFMS) coagulating sedimentation process to remove organic pollutants. In the entire dosage range of the coagulation test, the PFMS coagulant had a great effect on the black and odorous water turbidity. The removal rate of turbidity was much higher than that of poly aluminum chloride and ferric chloride coagulants. The results of SEM characterization showed that the PFMS was aggregated in a tree-like shape, which could enhance the functions of adsorption bridging and net replenishment in the coagulation process. When the pH of raw water was 8, the dosage of KMnO4 was 25 mg/L, and the pre-oxidation time was 25 minutes, the highest CODCr removal rate of 81.76% could be reached, which was 12.15 percent higher than the single coagulating sedimentation process, while the highest UV254 removal rate was 49.44%, increased by 11.71 percent compared with the single coagulating sedimentation. The turbidity removal rate of black and odorous water before and after adding KMnO4 was both above 90%.

     

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  • 收稿日期:  2018-06-28
  • 刊出日期:  2019-01-20

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