%0 Journal Article
%T Complete Nitritation Process in an Biofilm Moving Bed System by Controlling pH<br>pH控制生物膜移动床反应器完全亚硝化的研究
%A DENG Pin
%A LI Xiao-ming
%A YANG Qi
%A ZHANG Shao-qiang
%A ZENG Guang-ming
%A ZHANG Yu
%A YI Long-sheng
%A <br>邓嫔
%A 李小明
%A 杨麒
%A 张少强
%A 曾光明
%A 张昱
%A 易龙生
%J 环境科学
%D 2007
%I 
%X Complete nitritation process in an biofilm moving bed system was started-up by inoculating nitrobacteria and controlling pH, and the effects of nitrogen loading rate (NLR) and hydraulic retention time (HRT) on the stability of the system were investigated. The results showed that the system could achieve complete nitritation after 10 day's acclimation by controlling pH within the range of 7.7 - 8.2, under the conditions of temperature (30 +/- 1) degrees C, DO 1.5 - 2.0 mg/L, HRT 24 h,ammonia concentration 150 mg/L. Conversion rate of ammonia was above 96% and nitritation rate (NO2(-) -N/NO(x)(-) -N) was more than 95%. In addition, the system remained complete nitritation when NLR increased from 0.15 kg/(m3 x d) to 0.24 kg/(m3 x d), and conversion rate of ammonia was still above 90%, nitritation rate maintained at 96%, but the type of nitrification turned from completely nitritation to completely nitrification under the condition of over aeration by extended HRT under low NLR. However, it could be resumed by shortened HRT.
%K pH
%K free ammonia
%K complete nitritation
%K biofilm
%K moving bed<br>pH
%K 游离氨
%K 完全亚硝化
%K 生物膜
%K 移动床
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=15BD448442B396A3A5A98AECA85D1260&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=5D311CA918CA9A03&sid=4E17F6A5D7499FF3&eid=7DFC61BD88FB3757&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=14