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不同碳硫比条件下底物类型对硫酸盐去除的差异性
引用本文:张净瑞, 朱葛夫, 潘小芳, 刘超翔, 黄栩, 刘琳. 不同碳硫比条件下底物类型对硫酸盐去除的差异性[J]. 环境工程技术学报, 2015, 5(4): 253-258. doi: 10.3969/j.issn.1674-991X.2015.04.041
作者姓名:张净瑞  朱葛夫  潘小芳  刘超翔  黄栩  刘琳
作者单位:1.中国科学院城市环境研究所;;2.中国科学院宁波环境观测研究站
摘    要:
为探索底物和碳硫比(CODCr/SO42-)对硫酸盐去除的影响,分别以乙醇、乳酸、丙酸、丁酸、乙酸为底物,采用静态试验考察了不同CODCr/SO42-条件下利用不同底物去除硫酸盐的差异性。结果表明,在35  ℃条件下,CODCr/SO42-为2.0时,硫酸盐还原菌(SRB)对乙醇的适应性最好;CODCr/SO42-为2.5时,以乳酸、乙醇、丙酸为底物的系统中硫酸盐去除率分别可达90.29%、81.27%和80.69%;CODCr/SO42-为3.0也可维持较高的硫酸盐去除率,以丁酸、乙酸为底物的系统中硫酸盐去除率分别可达88.78%和73.69%。研究表明,CODCr/SO42-对SRB可利用的底物类型影响较大,根据底物类型选择最优的CODCr/SO42-,能够显著提高硫酸盐的去除效果,可为缩短厌氧脱硫反应器的启动时间提供新的思路。

关 键 词:碳硫比(CODCr/SO42-)   底物   硫酸盐去除率   硫酸盐还原菌(SRB)   产甲烷菌(MPB)   厌氧生物处理
收稿时间:2015-01-26
修稿时间:2015-03-16

Study on the Difference of Sulfate Removal with Different Substrates and CODCr/SO42- Ratios
ZHANG Jin-rui, ZHU Ge-fu, PAN Xiao-fang, LIU Xiang-chao, HUANG Xiang, LIU Lin. Study on the Difference of Sulfate Removal with Different Substrates and CODCr/SO42- Ratios[J]. Journal of Environmental Engineering Technology, 2015, 5(4): 253-258. doi: 10.3969/j.issn.1674-991X.2015.04.041
Authors:ZHANG Jin-rui  ZHU Ge-fu  PAN Xiao-fang  LIU Xiang-chao  HUANG Xiang  LIU Lin
Affiliation:1. Institute of Urban Environment, Chinese Academy of Sciences;;2. Ningbo Urban Environment Observation and Research Station, Chinese Academy of Sciences
Abstract:
To explore the effects of CODCr/SO42- and substrate on the removal of sulfate, the difference of the sulfate removal to five different substrates, i.e. lactic, ethanol, propionic, butyric and acetic, under different CODCr/SO42- ratios was studied in the conical flask with static condition. Results reveal that SRB with the substrate of ethanol has higher affinity than any other substrates at the CODCr/SO42- of 2.0 at the temperature of 35 ℃. When the CODCr/SO42- increases to 2.5, the system with lactic, ethanol and propionate as substrate rapidly reaches high sulfate removal rate, being 90.29%, 81.27% and 80.69%, respectively. At the CODCr/SO42- of 3.0, the system with butyrate and acetate as substrate has high sulfate-reducing rate, being 88.78% and 73.69%, respectively. It is shown that CODCr/SO42- rate has significant effects on the consumption of different substrates in the anaerobic system. Therefore, keeping the system at optimal CODCr/SO42- according to the substrates is an effective approach to increase the sulfate-reducing rate. This also provides a new thought to shorten the set-up time of anaerobic sulfate-reducing reactor.
Keywords:CODCr<  sub>  SO4<  sub>2-<  sup>  substrate  sulfate-reducing rate  sulfate-reducing bacteria(SRB)  methane-producing bacteria  anaerobic bio-treatment
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