稻草/空心球混合基质湿地去除营养盐的效果及机理研究

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• 英文论文题名：Performances and Mechanisms of Constructed Wetland with Combined Substrates for Nutrient Compounds Removal
• 论文作者：曹文平 ; 王国祥
• 英文论文作者：Cao Wenping ; Wang Guoxiang ; School of Environmental ; Nanjing Normal University
• 年：2016
• 作者机构：南京师范大学环境学院;
• 论文关键词：人工湿地 ; 除磷脱氮 ; 混合基质 ; 水质净化 ; 植物同化
• 英文论文关键词：Constructed wetlands(CWs) ; Nitrogen and phosphorus removal ; Combined substrates ; Wastewater purification ; Plant assimilation
• 会议召开时间：2016-10-25
• 会议录名称：2016中国水处理技术研讨会暨第36届年会论文集
• 语种：中文
• 分类号：X703
• 学会代码：GSCL
• 会议名称：2016中国水处理技术研讨会暨第36届年会
• 会议地点：中国江苏南京
• 主办单位：中国化工学会工业水处理专业委员会、中国石油学会海洋石油分会
• 学会名称：中国化工学会工业水处理专业委员会
• 页数：8
• 文件大小：1982k
• 原文格式：D
• 会议级别：全国

摘要

构建了两个平行的垂直流湿地,以空心球基质湿地为对比组,研究了稻草/空心球基质湿地去除营养盐的效果和特性及其机理。结果表明:当HRT约为8h时,稻草/空心球混合基质湿地对TN、TP平均去除率分别达到了84.3%、42.8%,比空心球基质湿地TN、TP的去除率分别高出25.4%、14.2%。稻草/空心球混合基质湿地具有更高的美人蕉收割量(高出14.83%),更高的干物质(碳、氮、磷等)浓度(高出10.57%),更有效的的微生物种群和指示性微生物以及更复杂的生物膜微环境。说明混合基质湿地有利于提高污水净化效果,为湿地系统的革新提供有益参考。
Compared to constructed wetland with hollow sphere(CW-HS) as substrate(controlled unit), the wastewater purification efficiency, performances and mechanisms of constructed wetland with rice straw/hollow sphere(CW-RS/HS) as combined substrates were investigated. The experimental results showed that the averaged removal rates of TN and TP of the CW-RS/HS reached 84.3% and 42.8%, which higher 25.4% and 14.2% than those of the CW-HS. But the effluent COD concentration of the CW-RS/HS was higher than the CW-HS.The combined substrates CW are helpful for improving the efficiency of wastewater purification, because of the higher harvest quantity of plants, the inclusion(carbon, nitrogen, and phosphorus) concentration, and more diverse of degradation bacteria and indicated microorganisms as well as more complex micro-environment of the bio-film.

引文

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