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强化混凝去除尖针杆藻

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蒋绍阶, 蒋晖, 向平, 张南, 赵约胜, 宋玲. 强化混凝去除尖针杆藻[J]. 环境工程学报, 2013, 7(9): 3312-3318.
引用本文: 蒋绍阶, 蒋晖, 向平, 张南, 赵约胜, 宋玲. 强化混凝去除尖针杆藻[J]. 环境工程学报, 2013, 7(9): 3312-3318.
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Jiang Shaojie, Jiang Hui, Xiang Ping, Zhang Nan, Zhao Yuesheng, Song Ling. Removal of synedra acus by enhanced coagulation[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3312-3318.
Citation: Jiang Shaojie, Jiang Hui, Xiang Ping, Zhang Nan, Zhao Yuesheng, Song Ling. Removal of synedra acus by enhanced coagulation[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3312-3318.
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强化混凝去除尖针杆藻

  • 1.

    重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045

  • 2.

    重庆交通大学河海学院, 重庆 400074

  • 3.

    重庆中法供水有限公司, 重庆 400045

  • 4.

    重庆水务集团股份有限公司, 重庆 400045

  • 基金项目:

    国家"水体污染控制与治理"科技重大专项(2009ZX07424-004)

  • 中图分类号: TU991.2

Removal of synedra acus by enhanced coagulation

  • 1.

    Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China

  • 2.

    School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China

  • 3.

    Chongqing Sino French Water Supply Co. Ltd., Chongqing 400045, China

  • 4.

    Chongqing Water Group Company Limited, Chongqing 400045, China

  • Fund Project:

  • 摘要: 嘉陵江水系藻类暴发,水源水中的藻类在水厂前处理工艺中难以去除,造成该流域附近10余个水厂发生滤池堵塞现象,其中个别水厂滤池反冲洗周期由正常情况的24 h缩短至2~3 h,严重影响净水厂的正常运行,使得制水能力大幅降低。针对藻类(优势藻为硅藻中的针杆藻)暴发问题,通过对比PAFS、PAC和PFC3种混凝剂的除藻除浊效果,选取PAFS为最佳混凝剂;通过添加预氧化剂和助凝剂强化混凝除藻效果,其结果表明,使用助凝剂PDMDAAC的对PAFS的助凝效果最好,其余药剂结合PAFS的除藻效果为PPC>ClO2>PAM>H2O2>HCA-1,并将其应用到现有水厂,结果表明,0.6 mg/L PDMDAAC+25 mg/L PAFS在水厂混凝沉淀,尖针杆藻含量降至49×104~55×104 cells/L,其除藻率可达70%~75%,大大减轻了滤池的运行负荷,使得水厂运行恢复到正常水平。
    Abstract: Because of the algae outbreak in Jialing River water system, the algae in source water was hard to be removed in pretreatment process, which caused more than 10 water factorties' blockage in filter and shorten the backwashing cycle from normal 24 h to 2 h. It seriously affected normal operation and dramatically decreased the producing ability of waterworks. Due to the algae outbreak (the dominant species was synedra acus belonging to Diatoms), the effect of PAFS, PAC, and PFC coagulants on algae removal and turbidity removal was compared, with PAFS presenting the best effects, which was chosen as the optimal coagulant. In addition, different pro-oxidations and coagulant aids were added to enhance flocculation removal effects of algae, the result showed that PDMDAAC combined with PAFC gave the best effect, and other promoting coagulation effect was PPC>ClO2>PAM>H2O2>HCA-1. Using 0.6 mg/L PDMDAAC+25 mg/L PAFS applied to exising plants, the residual algae decreased to 49×104~55×104 cells/L, the algae removal rate could reach up to 70%~75%, which greatly reduced the operation load of the filter and recoved the normal operating mode of the waterworks.
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  • [1] Lee J. D., Lee M. S., Shin W. S., et al.Removal of freshwater diatoms (Synedra acus and Stephanodiscus sp.) by preozonation and addition of polyamine coagulant-aid. Korean Journal of Chemical Engineering,2005,22(5):682-686
    [2] 左金龙.城市供水中藻类去除技术的研究进展.环境科学与管理,2009,34 (9):75-80 Zuo Jinlong. A review of studies on treatment techniques for algae in water supply.Environmental Science and Management, 2009, 34 (9):75-80(in Chinese)
    [3] Edzwald J. K. Algac,Bubbles,Coagulants and dissolved air flotation. Water Science & Technology, 1993,27(10):67-81
    [4] Yan Mingquan, Wang Dongsheng, Yu Jianfeng, et al. Enhanced coagulation in a typical North-China water plant. Water Research 2006,40(19):3621-3627
    [5] Kruk C., Mazzeo N., Lacerot G., et al. Classification schemes for phytoplankton: A local validation of a functional approach to the analysis of species temporal replacement.Journal of Plankton Research, 2002,24(9):901-912
    [6] Soylu E. N., Gonulo A. Functional classification and composition of phytoplankton in Liman Lake.Turkish Journal of Fisheries and Aquatic Sciences, 2010,10(1):53-60
    [7] Sommer U., Gliwicz Z.M., Lampert W., et al. The PEG-model of easonal succession of planktonic events in freshwaters. Archiv für Hydrobiologie, 1986,106(4):433-477
    [8] 叶健.絮凝动力学及其絮体的特性的初步研究.广州:华南理工大学硕士学位论文,2011 Ye Jian. Study on formation kinetics of flocs and properties of coagulation process. Guangzhou:Master Dissertation of South China University of Technology, 2011(in Chinese)
    [9] 张占梅, 聚合氯化铝铁絮凝剂的制备及絮凝性能研究.重庆:重庆大学硕士学位论文,2006 Zhang Zhanmei. Study on preparation and flocculation efficiency of polyaluminum ferric chloride. Chongqing:Master Dissertation of Chongqing University, 2006(in Chinese)
    [10] 刘启旺,胡俊虎,陈江平,等.复合型絮凝剂PAFS的研制及性能.水处理技术,2006,32(6):45-47 Liu Qiwang, Hu Junhu, Chen Jiangping, et al. Preparation and characteristics of compound flocculant of poly aluminum ferric sulphate. Technology of Water Treatment, 2006, 32(6):45-47(in Chinese)
    [11] Zhu Guocheng, Zheng Huaili, Zhang Zhi, et al. Characterization and coagulation-flocculation behavior of polymeric aluminum ferric sulfate (PAFS). Chemical Engineering Journal,2011,178:50-59
    [12] Cao X. Y., Yue Q. Y., Song L. Y., et al. The performance and application of fly ash modified by PDMDAAC. Journal of Hazardous Materials,2007,147(1-2):133-138
    [13] 陈卫,李圭白,邹浩春,等. PPC强化混凝除蓝藻除色度效果及致因研究.河海大学学报, 2006, 34(2): 140-143 Chen Wei, Li Kuibai, Zou Haochun, et al. Effect of enhanced-coagulation with PPC on blue-green algae and chroma removal and its causation. Journal of Hohai University (Natural Sciences), 2006, 34(2): 140-143(in Chinese)
    [14] 由振华,李梅,田珍. 高锰酸钾复合药剂在含藻水处理中的应用. 山东建筑大学学报, 2010, 25(4): 437-440 You Zhenhua, Li Mei, Tian Zhen. Application of potassium permanganate composites in algae-laden water treatment. Journal of Shandong Jianzhu University, 2010,25(4):437-440(in Chinese)
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出版历程
  • 收稿日期:  2012-06-28
  • 刊出日期:  2013-09-15

强化混凝去除尖针杆藻

  • 1. 重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045
  • 2. 重庆交通大学河海学院, 重庆 400074
  • 3. 重庆中法供水有限公司, 重庆 400045
  • 4. 重庆水务集团股份有限公司, 重庆 400045
  • 收稿日期:  2012-06-28
基金项目:

国家"水体污染控制与治理"科技重大专项(2009ZX07424-004)

摘要: 嘉陵江水系藻类暴发,水源水中的藻类在水厂前处理工艺中难以去除,造成该流域附近10余个水厂发生滤池堵塞现象,其中个别水厂滤池反冲洗周期由正常情况的24 h缩短至2~3 h,严重影响净水厂的正常运行,使得制水能力大幅降低。针对藻类(优势藻为硅藻中的针杆藻)暴发问题,通过对比PAFS、PAC和PFC3种混凝剂的除藻除浊效果,选取PAFS为最佳混凝剂;通过添加预氧化剂和助凝剂强化混凝除藻效果,其结果表明,使用助凝剂PDMDAAC的对PAFS的助凝效果最好,其余药剂结合PAFS的除藻效果为PPC>ClO2>PAM>H2O2>HCA-1,并将其应用到现有水厂,结果表明,0.6 mg/L PDMDAAC+25 mg/L PAFS在水厂混凝沉淀,尖针杆藻含量降至49×104~55×104 cells/L,其除藻率可达70%~75%,大大减轻了滤池的运行负荷,使得水厂运行恢复到正常水平。

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