摘要
同步脱氮除磷基质是一种可以同时去除氮和磷的功能性材料,在人工湿地去除污染物过程中起着决定性作用。简要概述了水平和垂直潜流人工湿地的运行机制和适用水体,将人工湿地的基质划分为单一式和组合式同步脱氮除磷基质;阐述了砾石和沸石等传统矿物、锰矿石和黄铁矿石等金属矿物、工业和建筑废料、农业废料、无机基质、有机基质、复合基质在人工湿地中的同步脱氮除磷效果和净化机制,其中,复合基质、锰矿石和黄铁矿石等金属矿物、农业废料具有高效的同步脱氮除磷效果,但是后两者受限于水体类型和自身的理化性质;总结了高性能的组合式同步脱氮除磷基质,分析了人工湿地类型、植物、微生物、水力停留时间、水力负荷率、温度和水体pH等因素对基质同步脱氮除磷效果的影响。
Substrates for simultaneous nitrogen and phosphorus removal are the functional materials that can remove nitrogen and phosphorus at the same time, which play a decisive role in the process of pollutant removal in constructed wetlands. This paper briefly summarized the operation mechanism and applicable water body of horizontal and vertical subsurface flow constructed wetlands. The substrates of constructed wetlands were classified into single and combined simultaneous nitrogen and phosphorus removal substrates.The simultaneous nitrogen and phosphorus removal effects and removal mechanism of traditional minerals such as gravels and zeolites, metal minerals such as manganese ores and pyrites, industrial and construction wastes, agricultural wastes, inorganic substrates, organic substrates and composite substrates in constructed wetlands were compared and discussed. Among them, composite substrates, metal minerals such as manganese ores and pyrites, and agricultural wastes have highly efficient simultaneous nitrogen and phosphorus removal effects. However, the actual removal effects of the latter two depend on the type of water body and their own physical and chemical properties. The combined simultaneous nitrogen and phosphorus removal substrates with high efficiencies were also summarized in this paper, and the influence of the critical factors of constructed wetlands, such as the type of wetland, plants, microorganisms, hydraulic retention time,hydraulic loading rate, the temperature and p H of water body on the simultaneous nitrogen and phosphorus removal processes of different substrates was analyzed.
作者
曾银金
许伟斌
ZENG Yinjin;XU Weibin(Huadong Engineering(Fujian)Corporation,Fuzhou 350001,Fujian,P.R.China)
出处
《湿地科学》
CSCD
北大核心
2022年第6期852-858,共7页
Wetland Science
基金
华东勘测设计院(福建)有限公司2019年科技项目(FH2019-KY002)资助。
关键词
人工湿地
同步脱氮除磷
基质
废水处理
constructed wetland
simultaneous removal of nitrogen and phosphorus
substrate
wastewater treatment
