一株白地霉在低碳氮比废水中降氨氮新功能的研究  

A Novel Function of Galactomyces candidum in Highly Efficient Ammonia Nitrogen Removal from Low C/N Wastewater

作　　者：刘辉[1] 李晓超 毛晓茜 鲁冰花 曾桂华[1] 李华林 王雪景 陈佳艳 肖亚梅 李庄 刘文彬 杨利平[1] LIU Hui;LI Xiaochao;MAO Xiaoqian;LU Binghua;ZENG Guihua;LI Hualin;WANG Xuejing;CHEN Jiayan;XIAO Yamei;LI Zhuang;LIU Wenbin;YANG Liping(College of Environmental Resources,Changsha Environmental Protection College,Changsha 410004,China;State Key Laboratory of Freshwater Fish Developmental Biology,College of Life Sciences,Hunan Normal University,Changsha 410012,China;Hunan Ecological and Environmental Affairs Center,Changde 415003,China)

机构地区：[1]长沙环境保护职业技术学院环境资源学院,长沙410004 [2]湖南师范大学生命科学学院省部共建淡水鱼类发育生物学国家重点实验室,长沙410012 [3]湖南省生态环境事务中心,常德415003

出　　处：《激光生物学报》2023年第1期89-96,共8页Acta Laser Biology Sinica

基　　金：湖南省自然科学基金-科教联合项目(2019JJ70017);湖南省自然科学基金立项课题项目(2021JJ60090);湖南省哲学社会科学规划基金项目(21ZWC06)。

摘　　要：该文从垃圾渗滤液中筛选出一株低C/N营养条件下氨氮去除效果显著的菌株。ITS序列测序鉴定表明,该菌株为白地霉(Galactomyces candidum)。经不同pH、温度、C/N的培养条件下培养24 h,测定其生长密度及氨氮去除情况,结果发现,白地霉培养基最佳降氨氮条件为:pH 8.0,C/N 1.5,温度30℃,其最佳氨氮去除率可达93.1%。该文发现了白地霉在污水处理,尤其是低C/N污水处理中具有氨氮去除的新功能,为其在低C/N污水生化处理工业化应用提供了新的菌株资源和技术途径。A strain of microorganism that demonstrated efficient nitrogen removal potential under low C/N conditions was screened from landfill leachate. The strain was identified as Galactomyces candidum by ITS sequencing, and growth density and removal of ammonia nitrogen were assessed after 24 h of incubation. The results showed that the optimum ammonia nitrogen reduction conditions for G. candidum was at pH 8.0 and 30 ℃, with a C/N ratio of 1.5;the highest rate of ammonia nitrogen removal was 93.1%. This novel function of G. candidum offers great potential in the removal of ammonia nitrogen from sewage, especially in low C/N wastewater. Our study provides a new theoretical basis for the industrial application of microorganism in the biochemical treatment of wastewater and reduces environmental pollution.

关 键 词：白地霉 低C/N 降氨氮 废水处理 培养条件 

分 类 号：X703[环境科学与工程—环境工程]