低温条件下人工湿地中微生物脱氮的强化措施  

Enhanced Measures of Microbial Nitrogen Removal in Constructed Wetlands under Low Temperature

作　　者：尹晓雪 徐圣君[2] 郑效旭 白志辉[2] 张焕祯[3] 马路宁 YIN Xiaoxue;XU Shengjun;ZHENG Xiaoxu;BAI Zhihui;ZHANG Huanzhen;MA Luning(Shenzhen Dida Water Engineering Co.Ltd.,Shenzhen 518000,Guangdong,P.R.China;Research Center for EcoEnvironmental Sciences,Chinese Academy of Sciences,Beijing 100085,P.R.China;College of Water Resources and Environment,China University of Geosciences,Beijing 100083,P.R.China;Shandong Hualu-Hengsheng Chemical Co.Ltd.,Dezhou 253024,Shandong,P.R.China)

机构地区：[1]深圳地大水务工程有限公司,广东深圳518000 [2]中国科学院生态环境研究中心,北京100085 [3]中国地质大学水资源与环境学院,北京100083 [4]山东华鲁恒升化工股份有限公司,山东德州253024

出　　处：《湿地科学》2020年第4期482-487,共6页Wetland Science

基　　金：国家水体污染控制与治理科技重大专项项目(2018ZX07105001和2015ZX07203-007);深圳治水提质科技专项项目(JSGG20171012143231779)资助。

摘　　要：人工湿地是一种可持续发展的污水深度处理技术,但是,在低温条件下,人工湿地的脱氮效果并不理想,因此限制了其在中国北方寒冷地区的应用与推广。研究表明,微生物活性受到抑制、溶解氧和碳源含量减小是人工湿地微生物低温脱氮的主要挑战;在低温条件下,人工湿地微生物脱氮的主要强化措施包括保温、调控人工湿地内溶解氧水平及分布、人工增加电子供体、优化进水碳氮比和筛选耐低温微生物等。Constructed wetlands are one of the most promising sustainable advanced wastewater treatment technologies,however,poor nitrogen removal performance under low temperature conditions has impeded their practical applications,particularly in the northern China with cold climate.This review suggested that insufficient microbial activities as well as limited dissolved oxygen and carbon sources are the main challenges for nitrogen removal under low temperature conditions in constructed wetlands.Besides,aiming at providing reference for the practical constructed wetlands operation,a comprehensive review was performed on augment of nitrogen removal under low temperature conditions,including achieving heat preservation,manipulating dissolved oxygen level and distribution,adding electronic donors,optimizing carbon-to-nitrogen ratio in influent and screening low-temperature-resistant microorganisms.

关 键 词：人工湿地 微生物 低温 脱氮 强化措施 

分 类 号：X172[环境科学与工程—环境科学]