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天然沸石处理含氨海水的实验 预览 被引量:1

Experimental Study on Treatment of Ammonia Nitrogen in Seawater by Natural ZeOlite
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摘要 研究以开发经济型处理低浓度含氨海水的工艺为目标,选用对氨氮有较强选择性和吸附性的天然斜发沸石作为吸附材料,将含氨氮海水通过烧杯实验和连续通水实验,系统地考察进水氨氮的浓度、pH值、沸石用量,以及洗脱条件对氨氮吸附特性的影响、结果表明,新鲜沸石处理低浓度含氨氮海水效果较好,去除效率可以达到75%左右;新鲜沸石穿透后,用海水+HCl的洗脱效果最佳,洗脱率可以达到98.2%. The aim of this work is to develop an economical proess to remove NH4^+-N from the seawater. The natural zeolite was employed as a specific sorbent, which have relatively strong selectivity and adorability to NH4^+-N. The effects of NH4^+ -N load, pH value, and regeneration times on the NH4^+-N removal behavior were investigated by the batch and continuous experiments. The results indicate that the removal efficiency of NH4^+-N could reach 75% by using fresh zeolite. The best of regeneration method was to treat NH4^+ -N saturated zeolite by seawater firstly and HCl secondly, and the maximum regeneration efficiency could reach about 98.2%.
作者 冯喆文 王新红 熊小京 FENG Zhe-wen, WANG Xing-hong, XIONG Xiao-jing (Environmental Science Research Center, Xiamen University, Xiamen 361005, China)
出处 《华侨大学学报:自然科学版》 CAS 北大核心 2008年第1期 42-45,共4页 Journal of Huaqiao University(Natural Science)
基金 福建省自然科学基金资助项目(D0610021) 福建省科技计划项目(2005N046)
关键词 天然沸石 海水 氨氮吸附 洗脱再生 natural zeolite seawater NH4^+-N adsorption zeolite regeneration
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