亚硝化菌株的筛选及其初步鉴定  

Four strains are isolated and primarily identified for nitrification

作　　者：沈珈琦[1] 方苹[1] 范伟平[1] 

机构地区：[1]南京工业大学制药与生命科学学院,南京210009

出　　处：《生物加工过程》2004年第1期30-34,共5页Chinese Journal of Bioprocess Engineering

基　　金：江苏省自然科学基金项目BK2 0 0 2 0 19

摘　　要：从化工废水和城镇污水生物处理反应器水中取样 ,用斯凯尔曼亚硝化假单孢杆菌培养基及硅胶平板分离得到 4株可以利用氨氮生长的菌株 ,并对其形态和生理生化性状进行分析。初步研究结果表明 ,它们可能分属硝化菌、丝状菌和假单孢菌。在溶氧浓度大于 1mg/L的液体培养基中 ,以上菌株能够将氨氮转化为NO-2 ,基本没有NO-3 ,又能将氨氮转化为气态氮 ,且水中NO-2 和NO-3 不再累积 ,分别保持在小于 9mg/L和小于 2 0mg/L的水平。Four strains with higher activity of ammonia degradation were isolated with silica gel plate and Skerman's medium for nitrification from wastewater treatment system of chemical plants and the treatment system of domestic wastewater Through analyzing physiological properties,the four strains may be identified into Nitrosomonas sp,Hyphomicrobium sp and Rhoropseudomonas sp When the concentration of dissolved oxygen in the medium reached 1 mg/L or above,it was investigated that ammonia nitrogen could be converted into NO - 2 with the four strains and partly converted into gaseous nitrogen while NO - 3 hardly existed. The concentration of NO - 2 and NO - 3 was low,less than 9 mg/L and 2 0 mg/L respectively

关 键 词：化工废水 城镇污水 生物处理反应器 斯凯尔曼亚硝化假单孢杆菌 培养基 菌株 假单孢菌 丝状菌 硝化菌 溶氧浓度 

分 类 号：X172[环境科学与工程—环境科学]