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氧化-铁盐絮凝联合对调理改善污泥脱水性能的影响

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骆丽宁, 王丽娟, 杨敏, 李锟, 刘锐平, 肖亚楠. 氧化-铁盐絮凝联合对调理改善污泥脱水性能的影响[J]. 环境工程学报, 2018, 12(2): 630-637. doi: 10.12030/j.cjee.201708105
引用本文: 骆丽宁, 王丽娟, 杨敏, 李锟, 刘锐平, 肖亚楠. 氧化-铁盐絮凝联合对调理改善污泥脱水性能的影响[J]. 环境工程学报, 2018, 12(2): 630-637. doi: 10.12030/j.cjee.201708105
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LUO Lining, WANG Lijuan, YANG Min, LI Kun, LIU Ruiping, XIAO Yanan. Combined effects of oxidation and iron coagulation on sludge co-conditioning and dehydration performance[J]. Chinese Journal of Environmental Engineering, 2018, 12(2): 630-637. doi: 10.12030/j.cjee.201708105
Citation: LUO Lining, WANG Lijuan, YANG Min, LI Kun, LIU Ruiping, XIAO Yanan. Combined effects of oxidation and iron coagulation on sludge co-conditioning and dehydration performance[J]. Chinese Journal of Environmental Engineering, 2018, 12(2): 630-637. doi: 10.12030/j.cjee.201708105
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氧化-铁盐絮凝联合对调理改善污泥脱水性能的影响

  • 1.

    河北工业大学土木与交通学院,天津300401

  • 2.

    中国科学院生态环境研究中心,中国科学院饮用水科学与技术重点实验室,北京100085

  • 3.

    中国科学院大学,北京100049

  • 4.

    通辽市自来水公司,通辽028000

  • 基金项目:

    国家自然科学基金优秀青年基金资助项目(51422813)

Combined effects of oxidation and iron coagulation on sludge co-conditioning and dehydration performance

  • 1.

    School of Civil and Transportation, Hebei University of Technology, Tianjin 300401,China

  • 2.

    Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

  • 3.

    University of Chinese Academy of Sciences, Beijing 100049, China

  • 4.

    Tongliao Water Supply Corporation, Tongliao 028000, China

  • Fund Project:

  • 摘要: 实验对比考察了活性氯预氧化与铁盐(Fe(Ⅱ)与Fe(Ⅲ))混凝改善市政污泥脱水性能。结果表明:预氧化可改善污泥脱水效果,氯投量为200 mg·g-1时污泥比阻(specific resistance to filtration,SRF)由5.3×109 m·kg-1降低至2.0×109 m·kg-1,进一增加氯投量,SRF反而升高；单独三价铁盐可明显改善污泥脱水性能,但二价铁效果有限；预氧化之后再投加Fe(Ⅲ)与Fe(Ⅱ),SRF较单独铁盐条件下分别降低40.3%和78.3%。进一步研究证实,预氧化可破坏污泥的胞外聚合物(extracellular polymeric substances,EPS),并导致胞内蛋白质和多糖的释放,且蛋白质和多糖含量与污泥脱水性能呈明显正相关性。活性氯预氧化与铁盐混凝联合调理可明显改善污泥脱水性能,且氧化与混凝的协同作用是其主要机制。
    Abstract: This study investigated the combined effects of chlorination with subsequent coagulation by Fe(Ⅱ) and Fe(Ⅲ) on the co-conditioning and dewatering of concentrated municipal sludge. Results indicate that preoxidation by chlorine may improve sludge dewatering, and chlorine at 200 mg·g-1 contributed to the decrease of the specific resistance to filtration (SRF) from 5.3×109 m·kg-1 to 2.0×109 m·kg-1. Fe(Ⅲ) at 30 mg·g-1 may significantly decrease the SRF from 3.5×109 m·kg-1 to 1.6×109 m·kg-1, whereas Fe(Ⅱ) shows little effect on sludge dewatering. The introduction of chlorine prior to Fe(Ⅲ) and Fe(Ⅱ) may further improve their positive effects, and SRF are respectively decreased by 40.3% and 78.3% as compared to that without prechlorination. Chlorination of sludge damages its extracellular polymeric substances (EPS) and the release of protein and polysaccharide in the sludge occurs thereafter, and the content of released protein and polysaccharide is observed to be positively correlated with the dewatering efficiency. The combined co-conditioning by chlorine and iron salts may improve the dewatering efficiency, and the synergistic effects between oxidation and coagulation are the main mechanisms.
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  • [1] 汤连生, 罗珍贵, 张龙舰,等.污泥脱水研究现状与新认识[J].水处理技术,2016,2(6):12-17
    [2] 王丹凤.阳离子改性壳聚糖、纤维素合成污泥脱水絮凝剂[D].长春:吉林大学, 2016
    [3] 刘吉宝, 李亚明, 吕鑑,等.污水处理厂不同工艺的污泥脱水效能分析及其影响因素研究[J].环境科学,2015,6(10):3794-3800
    [4] QI Y, THAPA K B, HOADLEY A F A.Application of filtration aids for improving sludge dewatering properties:A review[J].Chemical Engineering Journal,2011,1(2):373-384
    [5] BRUUS J H, NIELSEN P H, KEIDING K.On the stability of activated sludge flocs with implications to dewatering[J].Water Research,1992,6(12):1597-1604
    [6] LASPIDOU C S, RITTMANN B E.A unified theory for extracellular polymeric substances, soluble microbial products, and active and inert biomass[J].Water Research,2002,6(11):2711-2720
    [7] LI X Y, YANG S F.Influence of loosely bound extracellular polymeric substances (EPS) on the flocculation, sedimentation and dewaterability of activated sludge[J].Water Research,2007,1(5):1022-1030
    [8] YANG S, LI X.Influences of extracellular polymeric substances (EPS) on the characteristics of activated sludge under non-steady-state conditions[J].Process Biochemistry,2009,4(1):91-96
    [9] SHENG G P, YU H Q.Characterization of extracellular polymeric substances of aerobic and anaerobic sludge using three-dimensional excitation and emission matrix fluorescence spectroscopy[J].Water Research,2006,0(6):1233-1239
    [10] ZHAI L F, SUN M, SONG W, et al.An integrated approach to optimize the conditioning chemicals for enhanced sludge conditioning in a pilot-scale sludge dewatering process[J].Bioresource Technology,2012,1:161-168
    [11] ZHAO Y Q.Enhancement of alum sludge dewatering capacity by using gypsum as skeleton builder[J].Colloids and Surfaces A: Physicochemical and Engineering Aspects,2002,1(2):205-212
    [12] ZHAO H, YANG J, YU W, et al.Mechanism of red mud combined with Fenton’s reagent in sewage sludge conditioning[J].Water Research,2014,9:239-347
    [13] 李娟, 张盼月, 曾光明, 等.Fenton氧化破解剩余污泥中的胞外聚合物[J].环境科学,2009,0(2):475-479
    [14] 马俊伟,刘杰伟,曹芮,等.Fenton试剂与CPAM联合调理对污泥脱水效果的影响研究[J].环境科学,2013,4(9):3538-3543
    [15] 莫汝松, 戴文灿, 孙水裕,等.氧化剂对氯化铁与石灰联合调理污泥脱水性能的影响[J].环境科学与技术,2015,8(9):147-151
    [16] 倪丙杰,徐得潜,刘绍根.污泥性质的重要影响物质-胞外聚合物(EPS)[J].环境科学与技术,2006,9(3):108-110-121
    [17] 袁卓雅.IBR内不同工况的EPS特性与污泥性状分析研究[D].武汉: 华中科技大学, 2011
    [18] 洪晨,邢奕,司艳晓,等.芬顿试剂氧化对污泥脱水性能的影响[J].环境科学研究,2014,7(6):615-622
    [19] NEYENS E, BAEVENS J, DEWIL R.Advanced sludge treatment affects extracellular polymeric substances to improve activated sludge dewatering[J].Journal of Hazardous Materials,2004,6(2):83-92
    [20] 于文华, 濮文虹, 时亚飞,等.阳离子表面活性剂与石灰联合调理对污泥脱水性能的影响[J].环境化学,2013,2(9):1785-1791
    [21] LI H, WEN Y, CAO A, et al.The influence of additives (Ca2+, Al3+, and Fe3+) on the interaction energy and loosely bound extracellular polymeric substances (EPS) of activated sludge and their flocculation mechanisms[J].Bioresource Technology,2012,4:188-194
    [22] PARK K Y, AHN K H, MAENG S K, et al.Feasibility of sludge ozonation for stabilization and conditioning[J].Ozone: Science & Engineering,2003,5(1):73-80
    [23] 鹿雯.阳离子表面活性剂对污泥脱水性能的改善和作用机理研究[D].昆明:昆明理工大学, 2007
    [24] 刘玉学, 吴伟祥, 朱荫湄,等.胞外聚合物对污泥脱水性能的影响及其提取方法研究[J].科技通报,2008,4(4):565-569
    [25] GOODWIN J A S, FORSTER C F.A further examination into the composition of activated sludge surfaces in relation to their settlement characteristics[J].Water Research,1985,9(4):527-533
    [26] 李欣.阳离子调理剂与阳离子聚电解质联合作用于活性污泥脱水及其机理研究[D].上海:上海交通大学,2009
    [27] LIU H, YANG J, ZHU N, et al.A comprehensive insight into the combined effects of Fenton’s reagent and skeleton builders on sludge deep dewatering performance[J].Journal of Hazardous Materials,2013,8:144-150
    [28] YANG S F,LI X Y.Influences of extracellular polymeric substances(EPS)on the characteristics of activated sludge under non-steady-state conditions[J].Process Biochemistry,2009,4(1):91-96
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  • 刊出日期:  2018-02-08

氧化-铁盐絮凝联合对调理改善污泥脱水性能的影响

  • 1. 河北工业大学土木与交通学院,天津300401
  • 2. 中国科学院生态环境研究中心,中国科学院饮用水科学与技术重点实验室,北京100085
  • 3. 中国科学院大学,北京100049
  • 4. 通辽市自来水公司,通辽028000
基金项目:

国家自然科学基金优秀青年基金资助项目(51422813)

摘要: 实验对比考察了活性氯预氧化与铁盐(Fe(Ⅱ)与Fe(Ⅲ))混凝改善市政污泥脱水性能。结果表明:预氧化可改善污泥脱水效果,氯投量为200 mg·g-1时污泥比阻(specific resistance to filtration,SRF)由5.3×109 m·kg-1降低至2.0×109 m·kg-1,进一增加氯投量,SRF反而升高；单独三价铁盐可明显改善污泥脱水性能,但二价铁效果有限；预氧化之后再投加Fe(Ⅲ)与Fe(Ⅱ),SRF较单独铁盐条件下分别降低40.3%和78.3%。进一步研究证实,预氧化可破坏污泥的胞外聚合物(extracellular polymeric substances,EPS),并导致胞内蛋白质和多糖的释放,且蛋白质和多糖含量与污泥脱水性能呈明显正相关性。活性氯预氧化与铁盐混凝联合调理可明显改善污泥脱水性能,且氧化与混凝的协同作用是其主要机制。

English Abstract

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