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| Effect of electromagnetic field on the coagulation performance and floc characteristics of sludge recycling process |
| HAN Xing-hang, LI Xing, YANG Yan-ling, ZHOU Zhi-wei |
| College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China |
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Abstract In this paper, the pre-magnetization of sludge was carried out using electromagnetic field, and the effect of electromagnetic field intensity and time on the coagulation efficiency was investigated. The results indicated that the turbidity and DOC removal efficiency of recycling magnetized sludge can be improved, the removal of which was 3.7% and 32.4% respectively higher than the cases without electromagnetic field. Sufficiently large magnetic field intensity and magnetization time played a significant effect on the enhancement of the coagulation efficiency. The Zeta potential of the mixed water and sludge increased by electromagnetic field and the flocs characteristics were obviously improved, accordingly the flocs had bigger growth rate, average flocculation index and average flocs size with denser and regular structure.
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Received: 15 September 2015
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| [1] |
王东升.微污染原水强化混凝技术[M]. 北京:科学出版社, 2009:1-10.
|
| [2] |
徐勇鹏,何利,崔福义,等.回用净水厂生产废水强化低温低浊水的混凝效能[J]. 中国给水排水, 2011,27(7):55-58.
|
| [3] |
Zhou Zhiwei, Yang Yanling, Li Xing, et al. The removal characteristics of natural organic matter in the recycling of drinking water treatment sludge:Role of solubilized organics[J]. Ultrasonics Sonochemistry, 2016(28):259-268.
|
| [4] |
Chen Zhong-lin, Yu Wen-zheng, Shen Ji-min, et al. Effect of two-stage coagulant addition on coagulation-ultrafiltration process for treatment of humic-rich water[J]. Water Research, 2011,45(14):4260-4268.
|
| [5] |
Kim Jae Hun, Lee Chang Ha, Lee Eui Jong, et al. The effect of re-aggregated floc by additional coagulant on membrane[J]. Journal of the Taiwan Institute of Chemical Engineers, 2013,44(5):802-807.
|
| [6] |
齐鲁,王毅,梁恒,等.污泥回流与粉末活性碳组合工艺强化去除有机物[J]. 哈尔滨商业大学学报(自然科学版), 2009, 25(5):524-527.
|
| [7] |
纪洪杰,于海宽,于洁,等.浓缩炭泥回流、超滤组合工艺处理引黄水库水[J]. 中国给水排水, 2014,30(18):18-22.
|
| [8] |
陈庆生,陈松林.水的磁化处理研究和在冷却水系统中的应用[J]. 工业水处理, 2003,23(6):69-70.
|
| [9] |
黄征清,黄光斗,徐洪涛.水的磁处理防垢与除垢的研究[J]. 工业水处理, 2001,21(1):5-8.
|
| [10] |
Zhou K X, Lu G W. Monte Carlo Simulation of Liquid Water in a Magnetic Field. JAP, 2000,188(4):1802-1805.
|
| [11] |
李星,李虹,李圭白.一种研究絮凝过程的新方法-透光脉动检测技术[J]. 环境科学学报, 1997,17:430-431.
|
| [12] |
邬艳,杨艳玲,李星,等.三种常见混凝机理为主导条件下絮体特性研究[J]. 中国环境科学, 2014,34(1):150-155.
|
| [13] |
汪仲清,姜寿亭,周开学,等.磁处理技术作用机理的探讨[J]. 河北师范大学学报(自然科学版), 1998,22(1):47-51.
|
| [14] |
初永宝,高宝玉,岳钦艳,等.聚合氯化铝中纳米Al13形态的混凝效应[J]. 中国环境科学, 2005,25(4):504-507.
|
| [15] |
曹建军,王丽,肖明慧,等.交变电磁场磁化PFS处理黄河水的实验研究[J]. 硅酸盐通报, 2013,32(8):1657-1660.
|
| [16] |
张春华,于海,张冬华.电磁场对聚合硫酸铁水解聚合物形态分布及其混凝性能的影响[J]. 硅酸盐通报, 2013,32(11):2374-2378.
|
|
|
|
