沼气生物脱硫工艺的小试研究  

Lab-scale Investigation on Bio-desulfurization of Biogas

作　　者：刘卫国[1,2] 梁存珍[2] 杨栋[3] 郝艳萍[2] 

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]北京石油化工学院环境工程系,北京102617 [3]山西大学环境与资源学院,山西太原030006

出　　处：《中国沼气》2010年第6期24-26,53,共4页China Biogas

基　　金：北京市科技新星资助项目(2008B25);北京市优秀人才资助项目(20071D0500500156);URT资助项目(2008J00046)

摘　　要：对采用填料塔吸收和生物氧化工艺去除沼气中H2S进行小试研究,生物氧化采用生物膜工艺。研究了pH,气液体积比,吸收液温度和溶解氧浓度等因素对去除H2S的影响。沼气中H2S含量在3000~4000 mg.m-3,吸收液pH为7.8左右,气液体积比10∶1,吸收液温度25℃条件下,处理后H2S浓度低于200 mg.m-3,H2S去除率大于90%。H2S生物氧化主要产物为单质硫和SO42-,控制DO在1.0 mg.L-1左右,生成硫酸根比例小于5%。The bio-desulfurization of biogas was investigated at the lab-scale equipment mainly composed of filled tower and bioreactor.Biofilm process was adopted in the bioreactor.Process parameters such as pH,gas-to-liquid ratio,temperature and dissolved oxygen（DO） were optimized.When the H2S concentration in the inlet biogas was 3000～4000 mg·m-3,the outlet H2S concentration was 200 mg·m-3,and so more than 90% of H2S removal was achieved under the conditions of pH 7.8,gas-to-liquid ratio of 10∶1,25 ℃.And less than 5% of the removed sulfide was converted to sulfate under DO of 1.0 mg·L-1.

关 键 词：沼气生物脱硫 单质硫 填料塔 生物膜工艺 

分 类 号：S216.4[农业科学—农业机械化工程]