A submerged tubular ceramic membrane bioreactor for high strength wastewater treatment

摘要: A 4 L submerged tubular ceramic membrane bioreactor (MBR) was applied in laboratory scale to treat 2,400 mg-COD/L high strength wastewater. prolonged sludge retention time (SRT) of 200 day, contrast the conventional SRT 5 15 days, explored this study, aiming reduce substantially amount disposed sludge. The MBR system operated for a period 142 days four runs, differentiated by specific oxygen utilization rate (SOUR) and hydraulic (HRT). It found that produced more than 99% suspended solid reduction. Mixed liquor solids (MLSS) be adversely proportional HRT, general higher value from wastewater treatment plant. chemical demand (COD) removal efficiency achieved as 98% Run 1, when SOUR range 100-200 mg-O/g-MLVSS/hr. Unexpectedly, COD 2 92%, on average, where HRT abnormally low 20-30 mg-O/g-MLVSS/hr prevailed. noted presented significant soluble nutrient rejection microbial metabolism biological broke down.