Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 水污染控制实验室

	Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor
	Nilusha, Rathmalgodage Thejani; Wang, Tuo; Wang, Hongyan; Yu, Dawei; Zhang, Junya; Wei, Yuansong
刊名	PROCESSES
	2020-05
卷号	8 期号:5 页码:1-8
关键词	ceramic membrane domestic wastewater ambient temperature backwashing flux recovery
英文摘要	The cost-effective and stable operation of an anaerobic ceramic membrane bioreactor (AnCMBR) depends on operational strategies to minimize membrane fouling. A novel strategy for backwashing, filtration and relaxation was optimized for stable operation of a side stream tubular AnCMBR treating domestic wastewater at the ambient temperature. Two in situ backwashing schemes (once a day at 60 s/day, and twice a day at 60 s x 2/day) maintaining 55 min filtration and 5 min relaxation as a constant were compared. A flux level over 70% of the initial membrane flux was stabilized by in situ permeate backwashing irrespective of its frequency. The in situ backwashing by permeate once a day was better for energy saving, stable membrane filtration and less permeate consumption. Ex situ chemical cleaning after 60 days' operation was carried out using pure water, sodium hypochlorite (NaOCl), and citric acid as the order. The dominant cake layer was effectively reduced by in situ backwashing, and the major organic foulants were fulvic acid-like substances and humic acid-like substances.Proteobacteria,Firmucutes,EpsilonbacteriaandBacteroideswere the major microbes attached to the ceramic membrane fouling layer which were effectively removed by NaOCl.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45052]
专题	生态环境研究中心_水污染控制实验室
推荐引用方式 GB/T 7714	Nilusha, Rathmalgodage Thejani,Wang, Tuo,Wang, Hongyan,et al. Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor[J]. PROCESSES,2020,8(5):1-8.
APA	Nilusha, Rathmalgodage Thejani,Wang, Tuo,Wang, Hongyan,Yu, Dawei,Zhang, Junya,&Wei, Yuansong.(2020).Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor.PROCESSES,8(5),1-8.
MLA	Nilusha, Rathmalgodage Thejani,et al."Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor".PROCESSES 8.5(2020):1-8.