斜发沸石对氨氮的去除效果及其再生试验研究  

Study on Ammonia Removal by Clinoptilolite and Its Regeneration

作　　者：张兵[1] 崔福义[1] 左金龙[2] 张学洪[3] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]哈尔滨商业大学环境工程系,黑龙江哈尔滨150076 [3]桂林工学院资源与环境工程系,广西桂林541004

出　　处：《中国给水排水》2008年第23期85-88,共4页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2003AA601060);广西科技攻关项目(桂科攻0428008-4N)

摘　　要：为了有效去除污水中的氨氮,研究了斜发沸石对污水中氨氮的吸附去除效果,同时探讨了斜发沸石的化学和生物再生效果。间歇和连续试验结果表明:斜发沸石挂膜前、后对氨氮的吸附容量变化不大,斜发沸石对氨氮的吸附符合Langmuir吸附等温式。化学和生物再生试验结果显示:稳定运行2个月后,以NaHCO3为再生溶液,在Na+浓度为2000mg/L、气水比为5:1、温度为15～28.5℃时,对氨氮的去除率>80,沸石的再生效果较好;提供足够的溶解氧和适宜的温度,可有效提高生物再生的效率。试验结果表明,斜发沸石可以作为一种有效的氨氮吸附材料,并可有效再生。In order to remove ammonia nitrogen from wastewater effectively, clinoptilolite was used for adsorbing the ammonia nitrogen from wastewater, and the biological and chemical regeneration of clinoptilolite was investigated. The results of batch and continuous difference in the adsorption capacity is detected before and after the experiments show that no significant formation of biofilm on clinoptilolite. The adsorption of ammonia nitrogen on clinoptilolite fits to Langmuir isotherms. The results of biological and chemical regeneration experiment show that after 2-month stable operation, the removal rate of ammonia nitrogen is over 80% when NaHCO3 is used as regeneration solution, Na^＋ concentration is 2 000 mg/L, air-water ratio is 5 ： 1 and temperature is 15 to 28.5 ℃. The sufficient dissolved oxygen and favorable temperature can improve the bioregeneration efficiency. It is concluded that clinoptilolite can be used as a suitable material for adsorbing ammonia nitrogen and be regenerated effectively.

关 键 词：斜发沸石 氨氮吸附容量 离子交换 化学和生物再生 污水处理 

分 类 号：X703.1[环境科学与工程—环境工程]