Journal of Hebei University of Water Resources and Electric Engineering

Journal of Hebei University of Water Resources and Electric Engineering ›› 2023, Vol. 33 ›› Issue (3): 45-50.DOI: 10.16046/j.cnki.issn2096-5680.2023.03.008

• Remote Sensing and Ecological Environment Column • Previous Articles     Next Articles

Experimental Study on Treatment of Micro-polluted River Water by Magnetic Coagulation Technology

JING Chang-yong1, LIANG Yun1,2, JIN Ni-sha1, DONG Bing1   

  1. 1. Department of Environmental Engineering, Hebei University of Environmental Engineering, 066102, Qinhuangdao, Hebei, China;
    2. Department of Environmental and Chemical Engineering, Shanghai University of Electric Power, 201306, Shanghai, China
  • Received:2023-05-05 Revised:2023-05-29 Online:2023-09-30 Published:2023-10-26

磁混凝技术处理微污染河水实验研究

景长勇1, 梁贇1,2, 金泥沙1, 董冰1   

  1. 1.河北环境工程学院环境工程系,河北省秦皇岛市金港大道8号 066102;
    2.上海电力大学环境与化学工程学院,上海市浦东新区沪城环路1851号 201306
  • 通讯作者: 董冰(1987-),男,黑龙江鹤岗人,副教授,主要研究方向:纳米材料与电催化应用。E-mail:bingdong@pku.edu.cn
  • 作者简介:景长勇(1980-),男,河北秦皇岛人,教授,主要研究方向:污水治理技术。E-mail:94796928@qq.com
  • 基金资助:
    教育部产学合作协同育人项目(22097103291418);河北省自然科学基金青年基金项目(B2021415002)

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Abstract: In this paper, the micro-polluted river water is taken as the treatment object, and the removal effects of total phosphorus, turbidity, permanganate index, etc. of the river water before and after treatment are used as reference indicators. The influence factors such as precipitation time and dosing sequence were experimentally studied, and the optimal experimental conditions for the treatment of micro-polluted river water by magnetic coagulation technology were finally determined as follows: the optimal coagulant is ferric chloride, and the optimal dosing amount is 100 mg/L; the best dosage of magnetic powder is 200 mg/L; the best dosage of coagulation aid PAM is 1.00 mg/L) after 4 min, add PAM to stir quickly (250 r/min) for 1 min and finally stir slowly (80r/min) for 10 min; the optimum pH value is 6-8; the optimum precipitation time is 15 min.

Key words: magnetic coagulation, micro-polluted river water, the optimal dosage, coagulation effect

摘要： 文中以微污染河水为处理对象,以总磷、浊度、高锰酸盐指数等去除效果为参考指标,通过对磁粉、助凝剂、混凝剂投加量及pH值、沉淀时间、投加顺序等影响因素进行实验研究,最终确定了磁混凝技术处理微污染河水的最佳实验条件为:最佳混凝剂为三氯化铁,其最佳投加量为100mg/L;磁粉最佳投加量为200mg/L;助凝剂PAM最佳投加量为1.00mg/L;最佳投加方式为同时投加三氯化铁、磁粉,以250r/min的速度快速搅拌4min,再投加PAM快速搅拌1min,最后以80r/min的速度慢速搅拌10min;最佳pH值为6-8;最佳沉淀时间为15min。

关键词: 磁混凝, 微污染河水, 最佳投加量, 混凝效果

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