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亚铁离子生物氧化-还原法连续脱除硫化氢
引用本文:吴莉莉,刘宗瑜,秦松岩,程龙军.亚铁离子生物氧化-还原法连续脱除硫化氢[J].环境工程学报,2013,7(12):4909-4914.
作者姓名:吴莉莉  刘宗瑜  秦松岩  程龙军
作者单位:天津理工大学环境科学与安全工程学院, 天津 300384;天津理工大学环境科学与安全工程学院, 天津 300384;天津理工大学环境科学与安全工程学院, 天津 300384;深圳市危险废物处理站有限公司, 深圳 518049
基金项目:国家自然科学青年基金项目(51108317);天津市应用基础及前沿青年科技基金项目(12JCQNJC05400)
摘    要:为了降低工业废气中的硫化氢去除工艺成本和运行费用,对三价铁盐吸收与氧化亚铁硫杆菌对Fe2+的生物氧化联合作用脱除H2S进行了研究。通过生物氧化塔中的固定化氧化亚铁硫杆菌细胞再生的Fe3+溶液,在H2S还原吸收塔中脱除H2S。通过单因素实验分别优化了生物氧化塔和H2S吸收塔的运行参数,在生物氧化塔曝气量为150 L/h,停留时间为11 h,吸收液中Fe3+浓度为0.121~0.143 mol/L,吸收液流量为0.3 L/h,进气量为100 L/h条件下,进气中H2S浓度分别为2.28和9.11 mg/L,系统连续运行至200 min时趋于相对稳定,当系统连续运行稳定时,H2S的脱除率可分别达到95%和91%,脱除效果显著。

关 键 词:生物间接氧化法  氧化亚铁硫杆菌  硫化氢去除  铁盐还原  生物脱硫

Hydrogen sulfide removal in reduction of ferric and bio-oxidation of ferrous iron system
Wu Lili,Liu Zongyu,Qin Songyan and Cheng Longjun.Hydrogen sulfide removal in reduction of ferric and bio-oxidation of ferrous iron system[J].Techniques and Equipment for Environmental Pollution Control,2013,7(12):4909-4914.
Authors:Wu Lili  Liu Zongyu  Qin Songyan and Cheng Longjun
Affiliation:School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China;School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China;School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China;Shenzhen Hazardous Waste Treatment Station Co. Ltd., Shenzhen 518049, China
Abstract:Biological deodorization of hydrogen sulfide was studied through the reduction of ferric sulfate which were bio-oxidized from ferrous sulfate by Acidithiobacillus thiooxidans in a laboratory-scale trickle-bed bioreactors system. The operating parameters of bioreactor and H2S absorption tower were the aeration amount of 150 L/h, the absorbent liguid Fe3+ concentration of 0.121~0.143 mol/L, the absorption liquid flow of 0.3 L/h, the gas flow of 100 L/h. Under the optimal operating conditions,the removal rate of H2S achieved about 95% and 91% at the inlet concentrations of 2.28 mg/L and 9.11 mg/L in the intake gas, respectively. The system tended to be relatively stable after the system had continuously run for 200 min.
Keywords:indirect biological oxidation method  Thiobacillus ferrooxidans  H2S removal  iron salt reduction  biodesulfurization
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