再生水补给下城市景观水体沉积物氮污染特征与评价  

Characteristic and Evaluation of Nitrogen Pollution in Sediment of Urban Landscape Water Supplied by Reclaimed Water

作　　者：马永明[1] 郭红兵[1,2] 陈荣[2] 

机构地区：[1]中国恩菲工程技术有限公司,北京100038 [2]西安建筑科技大学环境与市政工程学院,西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《环境监测管理与技术》2017年第1期30-34,共5页The Administration and Technique of Environmental Monitoring

基　　金：国家水体污染控制与治理科技重大专项基金资助项目(2012ZX07313001-002);陕西省青年科技新星基金资助项目(2013KJXX-55)

摘　　要：选取昆明翠湖不同功能区表层沉积物,分析其氮的赋存形态与质量比分布特征,探讨上覆水、间隙水与沉积物各指标间的响应关系及污染现状分析评价。结果表明:翠湖表层沉积物总氮(TN)质量比为564 mg/kg^4 602 mg/kg,且沿水流方向增大;可转化态氮(TTN)含量变化差异性较小,以强氧化剂可提取态氮(SOEF-N)和强碱可提取态氮(SAEF-N)为主;上覆水溶解氧(DO)、氧化还原电位(ORP)、p H值、TN和间隙水p H值、氮盐、COD及沉积物氮赋存形态对翠湖表层沉积物中各形态氮的含量分布与变化存在响应关系。In this paper, the existing species and content distribution of nitrogen in sediments from different functional area in Cuihu Lake of Kunming were analyzed for discussing the indicators response relationship be-tween overlying water and interstitial water and sediment, and evaluating the current pollution situation. Results showed that TN content in surface sediment were 564 mg/kg-4 602 mg/kg and increased along the flow direc-tion. TTN content, with SOEF-N and SAEF-N dominated, varied little. The response relationship existed among dissolved oxygen, oxidation reduction potential, pH, total nitrogen in overlying water, and pH, nitrogen, COD in interstitial water, and the nitrogen species in sediment.

关 键 词：氮污染特征 沉积物 再生水补给 城市景观水体 昆明翠湖 

分 类 号：X524[环境科学与工程—环境工程]