排水沟渠炉渣与底泥对水中氮_磷截留效应_张燕.pdfVIP

中国环境科学 2013,33(6) ：1005~1010 China Environmental Science 排水沟渠炉渣与底泥对水中氮、磷截留效应 1,2 1* 1 1,2 张 燕 ,祝 惠 ,阎百兴 ,邓志强 (1. , 中国科学院东北地理与农业生态研究所湿地生态与环境重点实验 , 130102 2. 100049) 室吉林长春 ； 中国科学院研究生院北京 摘要：通过等温热力学吸附实验,将炉渣、炉渣+30%底泥、排水沟渠底泥对水中氨氮的去除效果进行比较,并采用Langmuir 等温吸附方程 对3 种基质吸附氨氮、磷酸盐的量进行拟合;通过动力学实验, 比较3 种基质吸附速率.结果表明,炉渣、炉渣+30%底泥、排水沟渠底泥对氨 氮的最大吸附量分别为 0.49,1.03,1.75mg/g, 对磷酸盐的最大吸附量分别为 0.99,2.33,1.88mg/g;4h 内基质吸附氨氮速率分别 为:0.10,0.11,0.54mg/(g·h),2h 内基质吸附磷酸盐速率分别为:0.048,0.051,0.096mg/(g·h). 由于沟渠底泥较为松散、遇水冲刷易流失,故选择炉渣 作为沟渠基质坝的填充物.基质坝能够减缓渠水流速,延长渠水的水力停留时间(HRT). 关键词：氨氮；排水沟渠；基质坝；磷酸盐；水力停留时间(HRT) 中图分类号：X522 文献标识码：A 文章编号：1000-6923(2013)06-1005-06 Interception effect of ditch slag and sediments on nitrogen and phosphorus in water. ZHANG Yan1, 2, ZHU Hui 1*, 1 1,2 YAN Bai-xing , DENG Zhi-qiang (1.Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China ；2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China). China Environmental Science, 2013,33(6)：1005~1010 Abstract ：In order to discuss the adsorption capacity of nitrogen and phosphorus for slag, 70% slag with 30% ditch sediment and ditch sediments, the isothermal adsorption and kinetics experiments were conducted at the comprehensive experimental field of the Sanjiang Mire Wetland Experimental Station(47°35′N, 133°31′E), Chinese Academy of Sciences. Meanwhile, the experimental data were fitted by the Langmuir isothermal adsorption equation. The maximum ammonium nitrogen adsorption amounts for slag, 70% slag with 30% ditch sediment, and ditch sediments were