Two-phase anaerobic digestion process for treating high concentration sulfate-organic wastewater with jet-loop anaerobic fluidized bed reactor

WEI Chaohai; WANG Wenxiang; WU Chaofei

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Two-phase anaerobic digestion process for treating high concentration sulfate-organic wastewater with jet-loop anaerobic fluidized bed reactor

更新时间：2025-12-10

- Two-phase anaerobic digestion process for treating high concentration sulfate-organic wastewater with jet-loop anaerobic fluidized bed reactor
- CIESC Journal Issue 1, (2007)
- 作者机构：
  
  华南理工大学环境科学与工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 January 2007，
  
  Published：05 January 2007
- 稿件说明：
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WEI Chaohai, WANG Wenxiang, WU Chaofei. Two-phase anaerobic digestion process for treating high concentration sulfate-organic wastewater with jet-loop anaerobic fluidized bed reactor[J]. CIESC Journal, 2007, (1).
DOI：

WEI Chaohai, WANG Wenxiang, WU Chaofei. Two-phase anaerobic digestion process for treating high concentration sulfate-organic wastewater with jet-loop anaerobic fluidized bed reactor[J]. CIESC Journal, 2007, (1). DOI：

摘要

设计了射流循环新型厌氧生物流化床反应器(JLAFB)，以该反应器为酸化相(或称硫酸盐还原相)，厌氧颗粒污泥流化床(AGSFB)为产甲烷相组成两相厌氧工艺处理高浓度硫酸盐有机废水。在培养出耐酸性硫酸盐还原厌氧颗粒污泥基础上，成功实现了硫酸盐还原菌（SRB）和产甲烷菌（MPB）的相分离，消除了SRB对MPB的基质竞争性抑制。在进水SO2-4负荷达12.0 kg·m-3·d-1条件下，JLAFB和AGSFB反应器内硫化物浓度分别为78.3 mg·L-1和92.4 mg·L-1，远小于200 mg·L-1的抑制浓度，消除了硫化物在反应器内的积累和对微生物的毒性作用。在稳态运行条件下，当进水COD和SO2-4负荷分别为26.0和8.5 kg·m-3·d-1时，工艺总的COD和SO2-4去除率分别达到86.9％和97.6％。试验确定工艺的最优运行条件为：进水COD/SO2-4>3.0；碱度为400～500 mg·L-1；JLAFB反应器吹脱气体流量为0.04 L·min-1，水力回流比为5∶1。

Abstract

Jet-loop anaerobic fluidized bed (JLAFB) was designed as a new anaerobic reactor.Two-phase anaerobic digestion process with JLAFB and AGSFB (anaerobic granular sludge fluidized bed) as acidogenic phase (or sulfate-reducing phase) and methane-producing phase

respectively

was used to treat high concentration sulfate-organic wastewater.With the successful culture of acid-tolerant sulfate reducing anaerobic granular sludge

the process successfully separated sulfate reducing bacteria (SRB) and methane producing bacteria (MPB) in different phases

and avoided substrate competition inhibition on MPB by SRB.When influent SO2-4 loading rate was up to 12.0 kg SO2-4·m-3·d-1

the sulfide concentrations of JLAFB and AGSFB reactors were 78.3 mg·L-1 and 92.4 mg·L-1

respectively

that were far less than 200 mg·L-1 of inhibition value

which avoided the accumulation of sulfide and toxicity inhibition on microorganisms in reactors.When the influent COD and SO2-4 loading rates during smooth operation were 26.0 and 8.5 kg SO2-4·m-3·d-1 respectively

the total removal efficiency values of COD and SO2-4 were 86.9% and 97.6% respectively.The optimal process conditions of the treating system were:influent COD/SO2-4 ratio＞3.0，influent alkalinity was 400—500 mg·L-1

aeration gas flow rate and hydraulic recycle ratio of JLAFB were 0.04 L·min-1and 5∶1 respectively.

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