###
工程科学与技术:2013,45(4):171-175
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
种泥热预处理对培养产氢颗粒污泥的影响
(1.四川大学 建筑与环境学院;2.成都工业学院)
Effects of Heat Preconditioning in Cultured Hydrogen-producing Granular Sludge
(1.College of Architecture & Environment,Sichuan Univ.;2.Chengdu Technological Univ.)
摘要
图/表
参考文献
相似文献
本文已被:浏览 1988次   下载 0
投稿时间:2013-01-31    修订日期:2013-03-22
中文摘要: 采用自制的上流式厌氧污泥床(UASB)反应器研究种泥热预处理对培养产氢颗粒污泥的影响。2组反应器分别以原始污泥和经热预处理污泥作为种泥,在进水COD浓度为4 000 mg/L,温度为37 ℃,出水pH为4.6~5.0的条件下,逐渐将HRT由24 h降低到7 h,2组反应器都在HRT为8~7 h时成功培养出成熟的颗粒污泥。此时,有机负荷为45 kg(COD)/(m3·d),接种原始污泥组产气量为41 L/d,氢气含量为52%,COD去除率为23%,总挥发酸为1 380 mg/L;而接种经热预处理污泥组的有机负荷为57kg(COD)/(m3·d),产气量为44.5 L/d,氢气含量为47.5%,COD去除率为12%,总挥发酸为1 086 mg/L。研究结果表明,种泥热预处理对产氢颗粒污泥的形成和稳定性有显著影响,虽然在形成颗粒污泥的过程中反应器稳定性较差,污泥易上浮,但颗粒形成后运行稳定,能适应更短的HRT,同时氢气产量也更高。
Abstract:The effects of heat pretreatment in cultured hydrogen-producing granular sludge was studied in upflow anaerobic sludge bed (UASB) reactor.Using a kind of mud and the thermal pretreatment of sludge as seeds,and under the conditions of the influent COD concentration 4 000 mg/L,the temperature 37 ℃,the effluent pH 4.6 ~ 5.0,HRT decreased from 24 h to 7 h,both reactor successfully cultivated mature granular sludge at HRT8 ~ 7 h.At this time,the organic load of the original sludge inoculation group is 45 kg(COD)/(m3· d),gas production is 41 L/d,hydrogen content is 52%,COD removal rate is 23%,total volatile acids is 1 380 mg/L,the organic load of the heat pretreatment group is 57 kg(COD)/(m3· d),gas production is 44.5 L/d,hydrogen content is 47.5%,COD removal rate is 12%,total volatile acids is 1 086 mg/L.The results showed that,the thermal pretreatment has a significant effect on the formation and stability of hydrogen-producing granular sludge,while in the process of the granular sludge formation,it's poor stability and easy to float,but after start-up,the running state is more stable,can adapt to a shorter HRT and got higher hydrogen yield.
文章编号:201300087     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(51108285);国家“863”计划资助项目(2011AA060905)
作者简介:
引用文本:
刘敏,周湘杰,周筝,陈滢,陈琛,何秋阳.种泥热预处理对培养产氢颗粒污泥的影响[J].工程科学与技术,2013,45(4):171-175.
Liu Min,Zhou Xiangjie,Zhou Zheng,Chen Ying,Chen Chen,He Qiuyang.Effects of Heat Preconditioning in Cultured Hydrogen-producing Granular Sludge[J].Advanced Engineering Sciences,2013,45(4):171-175.