摘要
致臭的含硫化合物，尤其是二甲基硫化物的生物处理去除率较低。通过分离鉴定或悬浮、附着生长培养手段，发现能了相硫化物的主要是化能自养型和在营养型的微生物，它们能将硫化物定量地氧化为ＳＯ４＾２－和ＣＯ２。大部分能降解甲基硫化物的微生物，其适宜ＰＨ为中性，甲硫醇和硫化氢是二甲基硫代谢的中间体，参与二甲基硫代谢的酶系统不稳定，是处理效果不佳的主要原因。利用纯细胞接种，可有效地提高生物过滤器的脱臭效果。
The microbiological deodorization efficiency for odorous sulfur compounds, especially for dimethyl sulfide, is relatively low. On the bases of isolation and identification and with the help of batch or continuous suspended-growth and attach-growth culture, the microorganisms being able to degrade gaseous sulfide are mainly methylotrophy and chemoautotrophy which can oxidize sulfide to sulfate and carbon dioxide quantitatively. The optimal pH value of the great part of the microoganisms degrading methyl sulfide is neutral. Methyl mercaptan and hydrogen sulfide are the intermediate from the microbic metabolism of dimethylsulfide. The main reason resulting in inefficient microbiological deodorization of dimethylsulfide is the instability of the enzyme system participating in this metabolism. With inoculation of the true cells, efficient deodorization in a biological filter can be realized. Through selective culture of high efficiency microoganisms and modification of the technology about immobilized microoganisms, the efficient microbiological deodorization for sulfide can be expected.
出处
《上海环境科学》
CAS
CSCD
1998年第8期12-16,共5页
Shanghai Environmental Sciences
基金
国家自然科学基金项目,编号59508006
关键词
硫化合物
恶臭
臭气治理
生物处理
大气污染
Sulfide Malodour Odour treatment Biological treatment Metabolic mechanism Application
