title: Effect of 200 days' sludge retention time on performance of a pilot scale submerged membrane bioreactor for high strength industrial wastewater treatment.
abstract: A high strength industrial wastewater was treated using a pilot scale submerged membrane bioreactor (MBR) at a sludge retention time (SRT) of 200 d. The MBR was operated at a high sludge concentration of 20 g/L and a low F/M ratio of 0.11 during 300 d of operation. It was found that the MBR could achieve COD and TOC overall removal efficiencies at more than 99 and 98% TN removal. The turbidity of the permeate was consistently in the range of 0.123 to 0.136 NTU and colour254 absorbance readings varied from 0.0912 to 0.0962 a.u. cm(-1). The sludge concentration was inversely proportional to the hydraulic retention time (HRT), yielded excellent organic removal and extremely low sludge production (0.0016 kgVSS/day).
authors.affiliation: School of Civil and Environmental Engineering, Nanyang Technological University Singapore.
authors.forename: C T
authors.initials: CT
authors.lastname: Hay
authors.forename: D D
authors.initials: DD
authors.lastname: Sun
authors.forename: S L
authors.initials: SL
authors.lastname: Khor
authors.forename: J O
authors.initials: JO
authors.lastname: Leckie
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D019149:Bioreactors; D003247:Conservation of Natural Resources; D007220:Industrial Waste; D008567:Membranes, Artificial; D012722:Sewage; D013997:Time Factors; D014865:Waste Disposal, Fluid; D014867:Water / Q000032:analysis*; D018508:Water Purification
chemical_list: D007220:Industrial Waste; D008567:Membranes, Artificial; D012722:Sewage; D014867:Water