%0 Journal Article
%T Characteristics of Aerobic Biofilter Backwash<br>曝气生物滤池反冲洗的特性
%A Zhang Jie
%A Chen Xiurong
%A <br>张杰
%A 陈秀荣
%J 环境科学
%D 2003
%I 
%X Periodic backwash is the vital stage to keep up the aerobic biofilter's performance. Under the same backwash conditions, a thorough study was done to review the influences on the performances of backwash in such aspects as backwash regimes, biofilter shapes. The experimental results show that the impulse backwash regime was superior to continuous backwash in the backwash performance and that the expansive flow aerobic biofilter was superior to the uniform flow aerobic biofilter in the performances of both backwash process and filter bed recovery. Then the optimal combination of the two factors i.e. the combination of impulse backwash mode and expansive flow filter was determined. Under the fixed filtration conditions, the appropriate impulse backwash parameters of expansive aerobic biofilter were determined as follows: the backwash air-flow intensity was 8-10 L/(s.m2), the backwash water-flow intensity was 2-4 L/(s.m2), and the backwash duration was 5 min.
%K expansive flow aerobic biofilter
%K uniform flow aerobic biofilter
%K impulse backwash
%K continuous backwash
%K filter bed recovery<br>扩展流曝气生物滤池
%K 均匀流曝气生物滤池
%K 脉冲反冲洗
%K 气水连续反冲洗
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=183A1C59D666C664&yid=D43C4A19B2EE3C0A&vid=B91E8C6D6FE990DB&iid=94C357A881DFC066&sid=7AA74D31F1FF2DCE&eid=CFAC5CB624A41AFD&journal_id=0250-3301&journal_name=环境科学&referenced_num=21&reference_num=12