Pilot study of cold-rolling wastewater treatment using single-stage anaerobic fluidized membrane bioreactor. (September 2018)

• Record Type: Journal Article
• Authors: Cheng, Hai-Hsuan; Whang, Liang-Ming; Yi, Tse-Fu; Liu, Cheng-Pin; Lin, Tsair-Fuh; Yeh, Mao-Song
• Is Part Of: Bioresource technology. Volume 263(2018)
• Page Start: 418
• Page End: 424
• Publication Date: 2018-09
• Subjects: Single-stage AFMBR -- Cold-rolling wastewater -- Methanogenesis -- T-RFLP; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.04.124
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Pilot single-stage AFMBR was firstly used for cold-rolling wastewater. COD removal of 90% was achieved under HRT 1.5 day. The genus Methanosaeta was dominant on GAC and the major methane producer in AFMBR. 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 302 days with influent COD concentration of 860–1120 mg/L. Under a hydraulic retention time of 1.5 d, the average effluent COD concentration of 72 mg/L achieved corresponding 90% of COD removal. The permeate flux was varied between 1.7 and 2.9 L/m 2 /h during operation which decreased with increased biomass concentration inside AFMBR. The trans -membrane pressure (TMP) was generally around 35–40 kPa, however, it increased up to 60 kPa when volatile suspended solid increased to above 2.5 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.