Pilot study of cold-rolling wastewater treatment using single-stage anaerobic fluidized membrane bioreactor

Hai Hsuan Cheng, Liang Ming Whang, Tse Fu Yi, Cheng Pin Liu, Tsair Fuh Lin, Mao Song Yeh

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

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/m2/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.

Original languageEnglish
Pages (from-to)418-424
Number of pages7
JournalBioresource technology
Volume263
DOIs
Publication statusPublished - 2018 Sep

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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