%0 Journal Article
%T Energy Saving Achieved by Limited Filamentous Bulking Under Low Dissolved Oxygen: Experimental Validation in(A/O) Process<br>低溶解氧污泥微膨胀节能方法在A/O中的试验验证
%A GUO Jian-hu
%A WANG Shu-ying
%A PENG Yong-zhen
%A ZHENG Ya-nan
%A HUANG Hui-jun
%A GE Shi-jian
%A SUN Zhi-Rong
%A <br>郭建华
%A 王淑莹
%A 彭永臻
%A 郑雅楠
%A 黄惠珺
%A 葛士建
%A 孙治荣
%J 环境科学
%D 2008
%I 
%X Preliminary studies had been conducted to determine the correctness of the theory and technique of energy saving achieved by limited filamentous bulking under low DO using a lab-scale A/O reactor with real domestic wastewater as the influent. The results showed that SVI could be maintained 150-230 mL/g and sludge settleability would not become very poor under the condition of low DO. During the period of limited filamentous bulking, COD and total nitrogen removal efficiencies were improved, and distinct simultaneous nitrification and denitrification (SND) was achieved, while ammonia removal efficiency would slightly decline with decreasing of DO, compared with the period of good settleability sludge under high DO. COD, ammonia and total nitrogen removal efficiencies were 86%, 70% and 63%, respectively. It was found that about 10%-25% nitrogen would be removed by SND based on the mass balance of nitrogen. Besides, SS in the effluent was almost negligible and the effluent turbidity was lower than 3 NTU. Significantly, aeration consumptions would be decreased by 17% under the condition with DO of 0.5 mg/L compared with 2.0 mg/L according to theoretical calculation of air requirements to keep different DO levels, which was about 57% in lab-scale reactor correspondingly.
%K low dissolved oxygen
%K limited filamentous bulking
%K aeration consumption
%K filamentous bacteria
%K predenitrification process((A/O) process)<br>低溶解氧
%K 污泥微膨胀
%K 曝气能耗
%K 丝状菌
%K A/O工艺
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=018BA4E7911F79E92180C50C6A9326EF&yid=67289AFF6305E306&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=50E626BD57FC091D&eid=ECEBE7D6D77ABD05&journal_id=0250-3301&journal_name=环境科学&referenced_num=3&reference_num=5