Towards stable operation of a dynamic membrane bioreactor(DMBR):Operational process,behavior and retention effect of dynamic membrane
发布时间：2024-08-09
点击次数：
- 所属单位：
- 环境与市政工程学院
- 发表刊物：
- Journal of Membrane Science
- 关键字：
- 中文关键字：Dynamic membrane bioreactor，英文关键字：Dynamic membrane bioreactor
- 摘要：
- An experimentalstudywasconductedforcharacterizingthewholeoperationalcycleofadynamic membrane bioreactor(DMBR).Withanylonmeshof25 μm poresizeassupportmaterial,the filtration flux wassuddenlyhalvedwithin5min,indicatingarapidcakelayerformation.Thenthe flux declined graduallyandbecamestableat t¼4 h,indicatingthematurationofthedynamicmembrane(DM)for stable operation.Byperiodicalbottomaeration,the flux keptstableuntil t¼24 hbeforephysicalcleaning should beconductedforDMregeneration.Insuchanoperationalcycle,effluent turbidityabout3NTU wasonlydetectedatthestart,droppedtoabout0.5NTUafter5minandkeptlowerafterwards.Effective and stableremovalofchemicaloxygendemand(COD),ammonia,phosphoruswasachievedinthe 2-month continuousoperationperiod.Althoughairbackwashingbroughtabouteffectiverecoveryofthe flux, additionalsurfacebrushingcouldfurtherremovethe “irremovablefouling”. Bymorphologicaland physicochemicalanalysis,itwasidentified thattheDMcouldretain15.3%ofCODand10.6%ofpoly- saccharides fromtheactivatedsludge,aswellascertainamountofprotein-likeandhumic-likesub- stances. ThesemembranefoulingsubstancesshouldberemovedbyphysicalcleaningforDMre- generation.
- 备注：
- 王晓昌
- 合写作者：
- 田文瑞,HuuHaoNgo
- 第一作者：
- 陈荣,王晓昌,胡以松
- 论文类型：
- 期刊论文
- 卷号：
- 卷：498
- 期号：
- 期：
- 页面范围：
- 页：20-29
- 是否译文：
- 否
- 发表时间：
- 2016-01-01