%0 Journal Article
%T Study on ion-exchange characteristics in the dynamic adsorption process of NH+4 by natural granulated zeolite<br>天然沸石颗粒对NH+4动态吸附过程中的离子交换特性研究
%A Lu Fenghai
%A Zhang Xinying
%A Wu Zhichao
%A Wang Zhiwei
%A Wang Xu
%A Zhu Yao
%A <br>陆风海
%A 张新颖
%A 吴志超
%A 王志伟
%A 王旭
%A 朱垚
%J 环境工程学报
%D 2011
%I 
%X Natural granulated clinoptilolite was adopted to investigate the dynamic adsorption characteristics of ammonium ions by zeolite. Test results showed that these factors such as zeolite particle size, bed height, up flow rate, ammonia nitrogen concentration and influent water quality had obvious effects on the adsorption of NH+4 by granulated zeolite. Proper parameters for design and operation in practical application should be selected according to the dynamic adsorption experiment. The results of ion-exchange mechanism experiment showed that Na+ was firstly exchanged into liquid-phase, then the amount of Ca2+ gradually increased with the reaction and both of them occupied the major part of the ion-exchange.For synthetic ammonia nitrogen wastewater, increasing amount of metal cations in liquid-phase was larger than decreasing amount of NH+4 in the whole operation, which can be attributed to the redistribution of the metal cations between the solid-liquid phases. For the effluent from anaerobic process, the removal amount of NH+4 was larger than the increasing amount of metal cations at the beginning of the adsorption and then gradually reached a balance.
%K natural granulated zeolite
%K ammonia nitrogen
%K adsorption
%K ion exchange
%K wastewater treatment<br>天然沸石颗粒
%K 氨氮
%K 吸附
%K 离子交换
%K 污水处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=1789754C7EC8B3C701AFC28F2D31B625&yid=9377ED8094509821&vid=94C357A881DFC066&iid=E158A972A605785F&sid=FC6FCA5A7559F1FB&eid=FE6645F2371CA43C&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=0