钱塘江引水降氮示范工程的构建和运行研究  

Studies on construction and performance of the Qiantang River water diversion de-nitrification demonstration project

作　　者：孔令为[1,2] 贺锋[1] 夏世斌[3] 徐栋[1] 裘知[2] 吴振斌[1] 

机构地区：[1]中国科学院水生生物研究所,湖北武汉430072 [2]浙江省环境保护科学设计研究院,浙江杭州310007 [3]武汉理工大学资源与环境工程学院,湖北武汉430070

出　　处：《环境污染与防治》2014年第11期60-66,共7页Environmental Pollution & Control

基　　金：国家科技支撑计划项目(No.2012BAJ21B03-04);国家水体污染控制与治理科技重大专项(No.2009ZX07106-002;No.2012ZX07101007-005);浙江省省属科研院所专项(No.2014F50025);城市河道污染控制及生态修复创新团队建设项目(No.2012F20016)

摘　　要：针对杭州西湖钱塘江引水低碳高氮的特点,提出以改性水草塘—复合垂直流人工湿地(IVCW)相耦合的生物—生态工艺进行引水处理,对该引水降氮示范工程的构建和运行效果进行了跟踪研究。结果表明,整个稳定运行期间(2012年7月19日至11月19日),耦合工艺对COD、TN、硝酸盐氮、TP的平均去除率分别为52.27%、52.49%、53.69%、52.79%,系统出水满足《地表水环境质量标准》(GB 3838—2002)Ⅳ标准;改性水草塘和IVCW单元作为耦合工艺的两个重要组成部分,在脱氮、除磷方面优势互补,从而共同保证出水水质的稳定;在改性水草塘单元,温度与COD的去除效果呈负相关关系,进水C/N与TN去除效果呈正相关关系;而在IVCW单元,温度与COD、TN的去除效果均呈线性正相关关系,进水C/N与两者的去除效果也呈正相关关系,且对COD的影响要大于对TN的影响。In this experiment,a biological-ecological process in which modified water mat pond coupling with integrated vertical-flow constructed wetland（IVCW）was proposed considering the low carbon high nitrogen characteristics of West Lake water diversion from the Qiantang River,meanwhile,the construction of nitrogen reducing demonstration project and the performance of coupled system was studied.The experimental results revealed that the average removal rate of COD,TN,NO-3-N and TP during the stable running period of coupling system was 52.27%,52.49%,53.69% and 52.79%,respectively,the effluent COD,NO-3-N and TP could meet grade Ⅳ of surface water environmental quality standards（GB 3838-2002）.The modified water mat pond and IVCW as the two important components of the coupling system had complementary advantages in the removal of nitrogen and phosphorus,and ensuring the stability of effluent water quality indexes.In IVCW unit,temperature and influent C/N was in positive correlated with COD and TN removal,and their effect on COD removal was greater than on TN removal.

关 键 词：钱塘江引水 低碳高氮 示范工程 C/N 

分 类 号：X52[环境科学与工程—环境工程]