%0 Journal Article
%T Simultaneous nitrogen and phosphor removal in an aerobic submerged membrane bioreactor
%A WANG Zhi-wei
%A WU Zhi-chao
%A GU Guo-wei
%A YU Guo-ping
%A MA Lu-ming
%A <br>WANG Zhi-wei
%A WU Zhi-chao
%A GU Guo-wei
%A YU Guo-ping
%A MA Lu-ming
%J 环境科学学报(英文版)
%D 2006
%I 
%X Simultaneous nitrification and denitrification (SND) effect and phosphor removal were investigated in a one-staged aerobic submerged membrane bioreactor on pilot-scale with mixed liquor suspended solids (MLSS) 19-20 g/L. The effects of DO concentration, sludge floc size distribution on SND were studied. Test results suggested that SND was successfully performed in the membrane bioreactor (MBR) and about 70% total nitrogen removal efficiency was achieved when DO concentration was set to 0.2-0.3 mg/L. The main mechanisms governing SND were the suitable sludge floc size and the low DO concentration which was caused by low oxygen transfer rate with such a high MLSS concentration in the MBR. In the meantime, phosphor removal was also studied with polymer ferric sulfate (PFS) addition and 14 mg/L dosage of PFS was proper for the MBR to remove phosphor. PFS addition also benefited the MBR operation owing to its reduction of extracellular polymer substances (EPS) of mixed liquor.
%K membrane bioreactor (MBR)
%K flat-sheet membrane
%K simultaneous nitrification and denitrifiction (SND)
%K phosphor removal
%K wastewater treatment
%K oxygen transfer rate<br>废水处理
%K 氧转移率
%K 需氧菌
%K 磷
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=D9539734B92919CA47258AB8B50F9D25&yid=37904DC365DD7266&vid=13553B2D12F347E8&iid=38B194292C032A66&sid=AC2617B68B137D9D&eid=A48DE16C07AAAB06&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=2&reference_num=28