The preliminary study of bio-diatomite dynamic membrane for municipal wastewater treatment
Bio-diatomite dynamic membrane (BDDM) is a new technology for municipal wastewater treatment. A 74μm stainless steel mesh material was used to make the BDDM support module. The flux changes of BDDM can be divided into two stages. In the first stage, the flux declines sharply and it lasts about 30min till the precoated process is done. In the second stage, the flux declines smoothly and the process lasts more than 400min. Before the backwash, the average flux of BDDM is around 50L/m2.h. With water backwash presser 0.049 MPa, the flux of bio-diatomite membrane can be recovered. Except NH4+-N which had no significant disparity, the effluent quality of BDDM was better than that from the clarifier tank, especially for turbidity and CODCr under the same condition of bio-diatomite reactor treatment.
bio-diatomite dynamic membrane fluz water quality
Hua-qiang CHU Bing-zhi DONG Da-wen CAO
College of Environmental Science and Engineering TongJi University Shanghai, PR China National Engineering Research Centre for Urban Pollution Control, Shanghai, PR China
国际会议
上海
英文
3293-3295
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）