高级搜索

不同预处理方法对脱水污泥厌氧消化的影响

,  ,  ,  , 

downloadPDF

上一篇

下一篇

余华平, 黄瑛, 洪锋, 周克梅, 周卫东. 不同预处理方法对脱水污泥厌氧消化的影响[J]. 环境工程学报, 2018, 12(9): 2594-2601. doi: 10.12030/j.cjee.201803102
引用本文: 余华平, 黄瑛, 洪锋, 周克梅, 周卫东. 不同预处理方法对脱水污泥厌氧消化的影响[J]. 环境工程学报, 2018, 12(9): 2594-2601. doi: 10.12030/j.cjee.201803102
shu
YU Huaping, HUANG Ying, HONG Feng, ZHOU Kemei, ZHOU Weidong. Influence of different pretreatments on anaerobic digestion of dewatered sludge[J]. Chinese Journal of Environmental Engineering, 2018, 12(9): 2594-2601. doi: 10.12030/j.cjee.201803102
Citation: YU Huaping, HUANG Ying, HONG Feng, ZHOU Kemei, ZHOU Weidong. Influence of different pretreatments on anaerobic digestion of dewatered sludge[J]. Chinese Journal of Environmental Engineering, 2018, 12(9): 2594-2601. doi: 10.12030/j.cjee.201803102
shu

不同预处理方法对脱水污泥厌氧消化的影响

  • 1.

    东南大学能源与环境学院，南京 210096

  • 2.

    南京水务集团有限公司，南京 210002

  • 基金项目:

Influence of different pretreatments on anaerobic digestion of dewatered sludge

  • 1.

    School of Energy and Environment, Southeast University, Nanjing 210096, China

  • 2.

    Nanjing Water Group Co.Ltd., Nanjing 210002, China

  • Fund Project:

  • 摘要: 以城市污水厂脱水污泥为对象，研究不同预处理方法（低温水热、HCl、H2O2、HCl+低温水热、H2O2+低温水热、HCl+低温水热+HAc、H2O2+低温水热+HAc）对污泥可溶化率和后续厌氧消化产气的影响。实验结果表明，HCl添加量越大，pH越低；H2O2添加量越大，污泥可溶化效果越好。H2O2+低温水热+HAc可溶化效果最为显著，经预处理后溶解性化学需氧量（soluble chemical oxygen demand，SCOD）是原泥的13.4倍，溶解性碳水化合物为原泥的4.1倍。可溶化效果与预处理方式均对挥发性脂肪酸（volatile fatty acids，VFA）有影响。预处理条件为HCl+低温水热或H2O2+低温水热时，污泥自身VFA含量有较大幅度增加。生物化学甲烷势（biochemical methane potential，BMP）实验显示，甲烷产率提高与产气高峰提前呈正相关；添加HAc可有效提高微生物对污泥的代谢，有利于甲烷产率的提高。 预处理条件为H2O2+低温水热+HAc时的甲烷产率最大，比原泥甲烷产率提高了57.63%，优于已有研究成果。
    Abstract: The influence of different pretreatments (low temperature hydrothermal, HCl, H2O2, HCl+low temperature hydrothermal, H2O2+low temperature hydrothermal, HCl+low temperature hydrothermal+HAc, H2O2+low temperature hydrothermal+HAc) on the sludge dissolubility and methane production during the anaerobic digestion process of the dewatered sludge were investigated. The results showed that higher HCl solution addition with the lower pH, or the higher H2O2 addition leads to the higher sludge dissolubility. The sludge dissolubility under the pretreatment condition of H2O2+ low temperature hydrothermal+HAc was the highest, while the soluble chemical oxygen demand (SCOD) under this pretreatment condition was 13.4 times than that of the original sludge, and the soluble carbohydrate was 4.15 times than that of the original sludge. Under the pretreatments of both HCl+low temperature hydrothermal and H2O2+low temperature hydrothermal, the VFA concentration of the sludge was significantly increased. The biochemical methane potential (BMP) experimental results showed that the increase of the methane yield rate was positively correlated with the earlier shift of the gas production peak. The addition of HAc can effectively improve the microbial metabolism of sludge and increase the methane yield. The methane yield rate under the pretreatment condition of H2O2+low temperature hydrothermal+HAc was about 57.63% higher than that of the original sludge not pretreated.
  • 加载中
  • [1] MANSOUR A P, MOHAMMADALI E N, MEHDI K,et al.Mesophilic co-digestion of municipal solid waste and sewage sludge:Effect of mixing ratio,total solids, and alkaline pretreatment[J].International Biodeterioration & Biodegradation,2017,125:97-104 10.1016/j.ibiod.2017.09.004
    [2] APPELS L, BAEYENS J, DEGREVE J,et al.Principles and potential of the anaerobic digestion of waste-activated sludge[J].Progress in Energy and Combustion Science,2008,34(6):755–781 10.1016/j.pecs.2008.06.002
    [3] SUSCHKA J, GRUBEL K.Low intensity surplus activated sludge pretreatment before anaerobic digestion[J].Archives of Environmental Protection,2017,43(4):50-57 10.1515/aep-2017-0038
    [4] 肖本益，刘俊新.不同预处理方法对剩余污泥性质的影响研究[J].环境科学,2008,29(2):327-331 10.3321/j.issn:0250-3301.2008.02.010
    [5] 王治军, 王伟．水热预处理改善污泥的厌氧消化性能[J]．环境科学,2005,26(1):68-71
    [6] JIANG H, LIU T, DING J T,et al.Optimization and performance of moderate combined alkali and microwave pretreatment for anaerobic digestion of waste-activated sludge[J].Polish Journal of Environmental Studies,2018,27(2):689-697 10.15244/pjoes/76138
    [7] MRUIZ H, JMARTIN D, JLABAND A,et al.Effect of ultrasound,low-temperature thermal and alkali pre-treatments on waste activated sludge rheology, hygienization and methane potential[J].Water Research,2014,61:119-129 10.1016/j.watres.2014.05.012
    [8] ZHANG T T.Combined free nitrous acid and hydrogen peroxide pre-treatment of waste activated sludge enhances methane production via organic molecule breakdown[EB/OL].[2018-02-27]. https://www.nature.com/articles/srep16631,2015
    [9] 严媛媛,陈汉龙,何群彪,等.热碱预处理改善低有机质污泥厌氧消化性能的效果[J].中国给水排水,2012,28(23):9-17 10.3969/j.issn.1000-4602.2012.23.003
    [10] 姚一思. 基于水热预处理的污泥高温厌氧消化技术的研究[D].南京:东南大学,2016
    [11] SEYONG P, MOONIL K.Innovative ammonia stripping with an electrolyzed water system as pretreatment of thermally hydrolyzed wasted sludge for anaerobic digestion[J].Water Research,2015,68:580-588 10.1016/j.watres.2014.10.033
    [12] PELLERA F M, SANTORI S, POMI R.Effect of alkaline pretreatment on anaerobic digestion of olive mill solid waste[J].Waste Management,2016,58:160-168 10.1016/j.wasman.2016.08.008
    [13] XUE Y G, LIU H J, CHEN S S,et al.Effects of thermal hydrolysis on organic matter solubilization and anaerobic digestion of high solid sludge[J].Chemical Engineering Journal,2015， 264:174–180 10.1016/j.cej.2014.11.005
    [14] CHEN Y, JIANG S, YUAN H,et al.Hydrolysis and acidification of waste activated sludge at different pHs[J].Water Research,2007,41(3):683–689 10.1016/j.watres.2006.07.030
    [15] DEWIL R, APPELS L, BAEYENS J, et al.Peroxidation enhances the biogas production in the anaerobic digestion of biosolids[J].Journal of Hazardous Materials,2007,146(3):577–581 10.1016/j.jhazmat.2007.04.059
    [16] SUN H, WU S B,DONG R J.Monitoring volatile fatty acids and carbonate alkalinity in anaerobic digestion:Titration methodologies[J].Chemical Engineering Technology,2016,39(4):599-610 10.1002/ceat.201500293
    [17] DCDEVLIN,SRRESTEVES,RMDINSDALE,et al.The effect of acid pretreatment on the anaerobic digestion and dewatering of waste activated sludge[J].Bioresource Technology,2011,102:4076-4082 10.1016/j.biortech.2010.12.043
    [18] MABELLEIRAPEREIRA J,IPEREZELVIRA S,SANCHEZONETO J,et al.Enhancement of methane production in mesophilic anaerobic digestion of secondary sewage sludge by advanced thermal hydrolysis pretreatment[J].Water Research,2015,71:330-340 10.1016/j.watres.2014.12.027
    [19] 任南琪，王爱杰.厌氧生物技术原理与应用[M].北京:化学工业出版社,2004:14-22
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1662
  • HTML全文浏览数:  1536
  • PDF下载数:  153
  • 施引文献:  0
出版历程
  • 刊出日期:  2018-09-20

不同预处理方法对脱水污泥厌氧消化的影响

  • 1. 东南大学能源与环境学院，南京 210096
  • 2. 南京水务集团有限公司，南京 210002
基金项目:

摘要: 以城市污水厂脱水污泥为对象，研究不同预处理方法（低温水热、HCl、H2O2、HCl+低温水热、H2O2+低温水热、HCl+低温水热+HAc、H2O2+低温水热+HAc）对污泥可溶化率和后续厌氧消化产气的影响。实验结果表明，HCl添加量越大，pH越低；H2O2添加量越大，污泥可溶化效果越好。H2O2+低温水热+HAc可溶化效果最为显著，经预处理后溶解性化学需氧量（soluble chemical oxygen demand，SCOD）是原泥的13.4倍，溶解性碳水化合物为原泥的4.1倍。可溶化效果与预处理方式均对挥发性脂肪酸（volatile fatty acids，VFA）有影响。预处理条件为HCl+低温水热或H2O2+低温水热时，污泥自身VFA含量有较大幅度增加。生物化学甲烷势（biochemical methane potential，BMP）实验显示，甲烷产率提高与产气高峰提前呈正相关；添加HAc可有效提高微生物对污泥的代谢，有利于甲烷产率的提高。 预处理条件为H2O2+低温水热+HAc时的甲烷产率最大，比原泥甲烷产率提高了57.63%，优于已有研究成果。

English Abstract

参考文献 (19)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心