PDF《污泥与秸秆共基质中温两相厌氧消化特性》

第32 卷第5期2019 年5月环境科学研究Research of Environmental Sciences Vol.

32?No.5 May?2019 收稿日期: 2018~05~24 修订日期: 2018~09~09 作者简介: 周海东(1971~)?男?安徽庐江人?副教授?博士?主要从事水污染控制与污泥资源化研究?zhouhaidong@ usst.edu.cn. 基金 项目: 上海市自然科学基金项目(No. 18ZR1426100)? 国家自然科学基金项目(No. 51279108)? 上海理工大学科技发展项目(No.2018KJFZ117) Supported by Natural Science Foundation of Shanghai? China (No.18ZR1426100)? National Natural Science Foundation of China (No.51279108)? USST Program of Science and Technology Development? China (No.2018KJFZ117) 污泥与秸秆共基质中温两相厌氧消化特性 周海东? 刘积成? 王莹莹? 应桢西 上海理工大学环境与建筑学院? 上海

200093 摘要: 以污泥和秸秆为共基质?以沼气产量、ρ(VFA) (VFA 为挥发性脂肪酸) 和CODCr 去除率等为指标?探究污泥与秸秆配比 (以CODCr 计?质量比分别为

1 ∶

0、1 ∶

1、2 ∶

1、3 ∶1)对中温两相厌氧消化工艺运行效能的影响?以及最佳配比时 SRT(污泥停留时间) 对产甲烷相厌氧消化稳态特性的影响. 结果表明:与污泥试验组相比?添加秸秆试验组的厌氧消化效能均较好?污泥与秸秆的最 佳配比为

2 ∶1?该稳定状态下产酸相 CODCr 的去除率最高?为17? 5%?ρ(VFA)为752 mgML?产甲烷相 CODCr 的去除率为 33? 5%? ρ(VFA)为250 mgML?产气量为 47?

7 mLMd?总体运行效能较高. 在最佳污泥与秸秆配比(2 ∶1)并设定产甲烷相反应器的 SRT 为20 d时?稳定状态下产甲烷相各组分的变化情况:CODCr 去除率为 41? 20%?ρ(VFA)为238 mgML?产气量为 51?

3 mLMd?沼气产率为 8?

4 mLM(d ? g). 研究显示?当控制污泥与秸秆配比为

2 ∶

1、SRT 为20 d 时?中温两相厌氧消化工艺运行效果良好. 关键词: 两相厌氧消化? 挥发性脂肪酸(VFA)? 污泥停留时间(SRT)? 沼气产量 中图分类号: X703?

1 文章编号: 1001~6929(2019)05~0904~09 文献标志码: A DOI: 10? 13198Mj? issn? 1001~6929? 2018? 11?

26 Performance of Two~Phase Anaerobic Digestion with Co~Substrates of Sewage Sludge and Corn Silage under Mesophilic Condition ZHOU Haidong? LIU Jicheng? WANG Yingying? YING Zhenxi School of Environment and Architecture? University of Shanghai for Science and Technology? Shanghai 200093? China Abstract: The effects of sludge~corn silage ratios (calculated as the CODCr ? mass ratio is

1 ∶0?

1 ∶1?

2 ∶1?

3 ∶1) on the performance of two~phase anaerobic digestion (TPAD) under mesophilic condition? and the influences of solid retention time (SRT) on the steady~state characteristics of anaerobic digestion in methanogenic phase at the optimal sludge~corn silage ratio were investigated with methane yield and CODCr removal rates. The results showed that the performances of anaerobic digestion with corn silage were better than the control group? and the optimal ratio of sludge to corn silage was

2 ∶1. Under this stable condition? the removal rate of CODCr in acidification phase was 17? 5%? and the concentration of volatile fatty acid (VFA) was

752 mgML? the removal rate of CODCr in methanogenic phase was 33? 5%? the concentration of VFA was

250 mgML? the biogas production was 47?

7 mLMd. Therefore? the overall performances of the TPAD of the co~substrates was fruitful. When the optimal ratio of sludge to corn silage (2 ∶1) was taken and the SRT of methanogenic reactor was set at

20 d? the methanogenic components changed in stable state were as follows: the removal rate of CODCr was 41? 20%? the concentration of VFA was