%0 Journal Article
%T Experimental Study on the Processes and Mechanism of Enhanced Denitrification by Addition Zeolite in Wastewater Treatment<br>沸石强化生化装置脱氮功能的效果及机理初探
%A DAI Xing-chun
%A HUANG Min-sheng
%A XU Ya-tong
%A XIE Bing
%A <br>戴兴春
%A 黄民生
%A 徐亚同
%A 谢冰
%J 环境科学
%D 2007
%I 
%X Aim to enhanced nitrogen removal from wastewater by addition zeolite to aeration tank, The result showed that addition of zeolite could improve the nitrification/denitrification efficiencies by comparing two phase experiment of 25mg/L with blank and 25mg/L with 50 mg/L. and the population of nitrifying bacteria in activated sludge increased obviously. When 25mg/L zeolite was added into aeration tank, NH4+-N and TN removal increased 10~13% and 13% respectively, endogenous respiration rate of nitrification increased about 138%,and the population of nitrification bacteria increased about 2.2 folds; But the nitrogen removal and endogenous respiration rate of 50 mg/L enhanced indistinct comparing with 25 mg/L. These results indicated that NH4+ ion-exchange and accumulation to the interior/outer surfaces of zeolite, co-existence of aerobic and anoxic micro-environments were responsible for the enhanced denitrifying function.
%K zeolite
%K ion exchange
%K nitrification and denitrification
%K endogenous respiration of nitrification<br>沸石
%K 离子交换
%K 硝化与反硝化
%K 硝化内源呼吸率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=15BD448442B396A316AA33350729869C&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=5D311CA918CA9A03&sid=8240BC26394E1210&eid=3A61856D91CF5877&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=25