摘要
城市生活污水排水管道通常处于厌氧状态,管道内气液相物质交换频繁,可视为一个庞大的气体排放系统,排出的污染气体包括硫化氢、甲烷、氨气和二氧化碳等十几种气体,其中硫化氢和甲烷浓度较高,受到学术界重视,并已经在管道内厌氧环境中硫化氢和甲烷的生成机制、影响因素、相互作用、静态模型等方面取得了很大的进展。其中主要的影响因素包括管道内污水的pH、水力停留时间、产甲烷细菌和硫酸盐还原细菌的食物竞争、某些对生化反应起抑制作用的盐类等。
The urban sewage drainage pipes are usually in the anaerobic state, in which the gas-liquid exchange occurs frequently .So the sewage drainage pipes can be regarded as a huge gas-discharged system. The gases discharged include hydrogen sulfide, methane, ammonia and carbon dioxide and so on. Because of high concentration, hydrogen sulfide and methane got high attention by the academic circles, and scientists has already made great progress in formation mechanism of hydrogen sulfide and methane, influence factors, interaction and static model. The main factors which influence formation of hydrogen sulfide and methane include pH of sewage water, hydraulic retention time, food competition of methanogenic bacteria and sulfate-reducing bacteria, inhibition of the biochemical reactions by some kind of salts.
出处
《广东化工》
CAS
2012年第16期104-105,共2页
Guangdong Chemical Industry
基金
国家环保公益科研专项(No.200909023)
关键词
排水管道
硫化氢
甲烷
影响因素
sewer： sulfureted hydrogen： methane
influence factors
