水文地质工程地质2011，Vol.38Issue(2)：97-101,5.
沸石的改性及其对水源水中氨氮去除的研究
Research on zeolite modification and its removal of ammonia-nitrogen in source water
摘要
Abstract
High concentration of ammonia-nitrogen in source water is extremely harmful to human health. How to remove ammonia-nitrogen efficiently and at low-cost in tap water has been a tough problem for numerous water plants. In this study, experiments were conducted using source water to investigate the effect of zeolite size, contact time and temperature upon the ammonia-nitrogen removal by zeolite modification with acid, salt and high temperature and the ammonia-nitrogen removal test. The results show that NaCl-modified zeolite has better removal efficiency. Under the condition of particle size being 0. 8 - 1.7 mm, temperature of 25℃,contact time for 15 min, the ammonia-nitrogen concentration in source water is decreased from 4. 43 mg/L to 0. 3mg/L, while the removal rate comes up to 93.2％. The mechanism of removing ammonia-nitrogen by modified zeolite is zeolite surface (and internal pore ) adsorption and ion exchange. Using modified zeolite partially to replace the common quartz sand in fast filer is only needed for ordinary water plants to remove ammonia-nitrogen effectively in drinking water. Financial estimation show that the investment increases only by 33 ～39 yuan/m3, while the running costs basically un-increases.关键词
改性沸石/水源水/氨氮/CODMn分类
资源环境引用本文复制引用
刘通,闫刚,姚立荣,陆丽巧,赵婷婷,张文艺..沸石的改性及其对水源水中氨氮去除的研究[J].水文地质工程地质,2011,38(2):97-101,5.基金项目
江苏省自然科学基金项目(SBK200930405) （SBK200930405）
"十一五"国家科技重大专项(2008ZX07101007-01) （2008ZX07101007-01）
常州市自然科学基金项目(CS20100002) （CS20100002）
