混合耐冷菌的筛选及生活污水的降解研究  

A Research on the Isolation of Mixed Psychrotrophs and the Degradation of Sewage

作　　者：景依葶 田晓娟 魏晓霞[2] 徐佳志 张新国 王铭也 魏丽 宏亚丽 盖轲[2] JING Yi-ting;TIAN Xiao-juan;WEI Xiao-xia;XU Jia-zhi;ZHANG Xin-guo;WANG Ming-ye;WEI Li;HONG Ya-li;GAI Ke(Qibo Medical college,Longdong University,Qingyang 745000,Gansu;College of Chemistry and Chemical Engineering,Longdong University,Qingyang 745000,Gansu;Qingyang Energy Chemical Group Wode Oil Technology Co.,LTD,Qingyang 745000,Gansu)

机构地区：[1]陇东学院岐伯医学院,甘肃庆阳745000 [2]陇东学院化学与化工学院,甘肃庆阳745000 [3]庆阳能源化工集团沃德石油技术有限公司,甘肃庆阳745000

出　　处：《陇东学院学报》2022年第5期92-96,共5页Journal of Longdong University

基　　金：庆阳能源化工集团沃德石油公司科研项目。

摘　　要：从甘肃庆阳污水处理厂采样,10℃驯化污泥,筛选分离得到5株对人工生活污水COD去除性能较好的耐冷菌,其中WE-1、WE-2和FH属于假单胞菌属(Pseudomonassp.),WS-1属于节细菌属(Arthrobactersp.),WS-2属于土生拉乌尔菌属(Raoultellasp.)。单菌及混合菌对人工生活污水的降解研究显示,单菌10℃培养10d, WE-1的COD去除率最高,为85.70%,处理后COD为92.95mg/L。WE-1、WE-2、WS-1、WS-2和FH混合接种,10℃培养7d, COD去除率达91.89%,处理后COD为52.72mg/L。混合菌对人工生活污水COD的去除率优于单菌。该混合菌对改善我国北方寒冷地区生活污水处理效率有一定的潜在价值。Collected from Qingyang Sewage treatment Plantin Gansu Province,the samples were subjected to low temperature acclimation and enrichment culture at 10℃.After isolation and purification repeatedly,5 strains of psychrotrophic bacteria,which have higher chemical oxygen demand(COD)removal performance to artificial sewage,were screened out.The removal performance of single bacteria and its mixed bacteria on artificial domestic sewage was studied.The results indicated that strain WE-1,WE-2 and FH were Pseudomonassp,strain was Arthrobactersp.,strain was Raoultellasp..After cultured at 10℃ for 10 days,WE-1 had the highest COD removal ratio of 85.70%to artificial sewage between single strains,and the COD of the effluent was 92.45 mg/L.When artificial sewage was treated at 10℃ for 10 days by mixed strains,the COD removal ratio reached 91.89%,and the COD of the effluent was 92.45 mg/L.It appeared that the mixed bacteria strain had a considerable potential value in solving the poor sewage treatment efficiency in the low temperature conditions in China’s northern areas.

关 键 词：耐冷菌 化学需氧量(COD) 人工生活污水 

分 类 号：Q939.99[生物学—微生物学] Q89