Effect of 200 days' sludge retention time on performance of a pilot scale submerged membrane bioreactor for high strength industrial wastewater treatment.
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).
Hay
C T
CT
School of Civil and Environmental Engineering, Nanyang Technological University Singapore.
Sun
D D
DD
Khor
S L
SL
Leckie
J O
JO
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
D007220:Industrial Waste; D008567:Membranes, Artificial; D012722:Sewage; D014867:Water