Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7066583 | Bioresource Technology | 2018 | 7 Pages |
Abstract
A pilot-scale single-stage anaerobic fluidized membrane bioreactor (AFMBR) was firstly used in this study to treat cold-rolling emulsion wastewater from steel industry. It was continuously operated for 302â¯days with influent COD concentration of 860-1120â¯mg/L. Under a hydraulic retention time of 1.5â¯d, the average effluent COD concentration of 72â¯mg/L achieved corresponding 90% of COD removal. The permeate flux was varied between 1.7 and 2.9â¯L/m2/h during operation which decreased with increased biomass concentration inside AFMBR. The trans-membrane pressure (TMP) was generally around 35-40â¯kPa, however, it increased up to 60â¯kPa when volatile suspended solid increased to above 2.5â¯g/L. Both flux and TMP data reveal the importance of biomass control for AFMBR operation. Results from terminal restriction fragment length polymorphism (T-RFLP) show the genus Methanosaeta was dominant on GAC and it shared dominance with the genera Methanomethylovorans and Methanosarcina in suspended sludge.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Hai-Hsuan Cheng, Liang-Ming Whang, Tse-Fu Yi, Cheng-Pin Liu, Tsair-Fuh Lin, Mao-Song Yeh,