摘要
恶臭气体作为畜禽养殖场的主要污染物,成分复杂且较难去除.生物法除臭效率高,而筛选出高效除臭的微生物又是生物法除臭的关键.从脱除硫化氢的生物反应器中取脱硫菌种,经分离纯化得到选择脱除硫化氢的6株异养氧化菌和1株自养氧化菌.根据其形态特征观察与生理生化反应结果,将其鉴定到属:菌B1、菌B5为微球菌属、菌B2为短杆菌属、菌B3为副球菌属、菌B4为微杆菌属、菌B6为埃希氏菌属、菌B7为硫杆菌属.在28℃,120r/min的条件下,依据菌体的生长情况对其进行生长繁殖期内硫化物降解能力的测定,实验结果表明:脱硫菌能利用培养液中的S2-使其主要氧化为SO42-,并且短时间异养菌的去除效果较自养菌好,去除率均在61.0%以上,自养菌的去除率最高时仅为49.7%.
It is difficult to remove the odor derived from the main pollutant of the livestock farm due to its complex composition. Based on its high-efficiency, the biological deodorization tech- nique has been paid more attention, and screening efficient deodorant bacteria for it is a key step. In this paper, after being isolated and screened, six strains of heterotrophic sulfide oxidi- zing bacteria and one strain autotrophic sulfide oxidizing bacteria have been got from the biofil- ter in removal of H2S. The morphological, physiological and biochemical tests indicate that they can be identified as follows： B1 and B5 are Micrococcus sp, B2 is Brevibacteriurn sp, B3 is Paracoccus sp, B4 is Microbacterium sp, B6 is Escherichia sp, B7 is Thiobacillus sp. In the condition of 28 ℃ and 120 r/min, according to the growth of bacterium, the degradation tests for removal of sulfide in bacteria growth progenitive period has been investigated and the re- sults show that the desulfurization bacteria oxidates S2 to SO42 mainly, meanwhile the re- moval rate of the heterotrophic bacteria is better than the autotrophy bacterium, they are more than 61.0%, but the best removal rate of the autotrophy bacterium is 49.7%.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2012年第5期844-849,共6页
Journal of China University of Mining & Technology
基金
山西省科技攻关项目(20090311077)
关键词
养殖场臭气
脱硫菌种
降解能力
硫化物
odor of livestock
desulfurization bacteria
biodegradability
sulfide
作者简介
梁美生（1968-），女，山西省太原市人，副教授，工学博士，从事气体净化及大气污染控制方面的研究．E—mail：liangms88888@163．com Tel：13834110516
