固体碳源生物膜处理地下水硝酸盐污染的脱氮性能研究  

Nitrogen removal performance of solid carbon source biofilm reactor for treatment of nitrate-contaminated groundwater

作　　者：张立秋[1,2] 雷志娟 李淑更 黄凤丹 邵兵[1,2] 朱晓辉[1,2] ZHANG Liqiu;LEI Zhijuan;LI Shugeng;HUANG Fengdan;SHAO Bing;ZHU Xiaohui(School of Civil Engineering,Guangzhou University,Guangzhou Guangdong 510006;Key Laboratory for Water Quality and Conservation of the Pearl River Delta,Ministry of Education,Guangzhou Guangdong 510006;School of Environmental Science and Engineering,Guangzhou University,Guangzhou Guangdong 510006)

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]珠江三角洲水质安全与保护教育部重点实验室,广东广州510006 [3]广州大学环境科学与工程学院,广东广州510006

出　　处：《环境污染与防治》2020年第8期937-942,共6页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.51478127、No.51708140);广州市科技计划项目(No.201510010051);广州大学研究生创新研究资助计划项目(No.2018GDJC-M45)。

摘　　要：采用聚己内酯(PCL)为固体碳源和生物膜载体,研究填充率和水力停留时间(HRT)对生物膜反应器脱氮的影响。结果表明:(1)40%(体积分数)的填充率较合适,4h为最佳HRT。此时反应器硝酸盐氮去除率为88%,出水硝酸盐氮质量浓度平均值为8.80mg/L。(2)丛毛单胞菌属(Comamonas)、热单胞菌属(Thermomonas)、固氮螺菌属(Azospira)和长绳菌属(Longilinea)为反应器的主要菌属,且填充率40%的反应器以上菌属相对丰度总和最高(70%)。Using polycaprolactone(PCL)as a solid carbon source and biofilm carrier,the effect of filling rate and hydraulic retention time(HRT)on nitrogen removal in biofilm reactors was studied.The results showed that:(1)40%filling rate was more appropriate,and 4 hwas the best HRT.At this time,the average removal rate of nitrate nitrogen in the reactor was 88%,and the average mass concentration of nitrate nitrogen in the effluent was 8.80 mg/L.(2)Comamonas,Thermomonas,Azospira and Longilinea were the main bacterial genera of the reactor,and when the filling rate was 40%,the total relative abundance of the reactor was the highest(70%).

关 键 词：地下水 可生物降解聚合物 固体碳源 填充率 高通量测序 

分 类 号：X523[环境科学与工程—环境工程]