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垂直潜流人工湿地对污水厂二级出水的脱氮研究

发表时间:2010-12-31  浏览量:1568  下载量:464
全部作者: 柴祯,王昊,赵菁,何绪文
作者单位: 中国矿业大学(北京)化学与环境工程学院
摘 要: 采用垂直潜流湿地对模拟污水处理厂二级出水进行处理,考察在不同水力负荷、基质高度、基质滤料条件下,系统对模拟水中氮素的去除效果。结果表明:氮素去除率随水力负荷的增大而降低;系统最底层由于复氧能力弱,脱氮效果最差;经过NaCl溶液改性的沸石,对氮的去除效果明显增强。
关 键 词: 水体污染控制;人工湿地;氮素浓度;水力负荷;基质高度
Title: Research on nitrogen removal of secondary effluent of wastewater treatment plant in vertical subsurface-flow constructed wetlands
Author: CHAI Zhen, WANG Hao, ZHAO Jing, HE Xuwen
Organization: School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing)
Abstract: By investigating the nitrogen concentrations in effluents of the vertical subsurface-flow constructed wetlands under the conditions of different hydraulic loading rates, substrates heights, and different kinds of substrates, the nitrogen removal routes in the wetlands were analyzed. It was found that the nitrogen removal routes decreased along with the increase of hydraulic loading rates. The nitrogen removal routes were lowest at the bottom of the reactor owing to the poor reoxygenation. NaCl modified zeolite made higher nitrogen removal routes.
Key words: water pollution control; constructed wetlands; nitrogen concentrations; hydraulic loading rates; substrates heights
发表期数: 2010年12月第24期
引用格式: 柴祯,王昊,赵菁,等. 垂直潜流人工湿地对污水厂二级出水的脱氮研究[J]. 中国科技论文在线精品论文,2010,3(24):2496-2499.
 
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