Osmotic membrane bioreactor (OMBR) technology for wastewater treatment and reclamation: Advances, challenges, and prospects for the future

Xinhua Wang, Victor W. C. Chang, Chuyang Y. Tang

Research output: Contribution to journalReview ArticleResearchpeer-review

139 Citations (Scopus)

Abstract

Osmotic membrane bioreactor (OMBR) is an emerging technology integrating a forward osmosis (FO) process into a membrane bioreactor (MBR). This technology has been gaining increasing popularity in wastewater treatment and reclamation due to its excellent product water quality, low fouling tendency and high fouling reversibility over conventional MBRs. In the past decade especially the last 3 years, novel insights and significant advancements have been achieved in many aspects of OMBR accompanied with greatly increased number of published papers. This paper attempts to critically review the recent developments in OMBRs and to present a clear outline for further studies. Firstly, OMBR fundamentals including its configuration and FO process are presented. Subsequently, performance of OMBRs is summarized and compared to conventional MBRs. Additionally, mechanisms, impacts and mitigations of salt accumulation and membrane fouling related to the core challenge of low water flux in OMBRs are addressed. Finally, future research prospects are discussed in order to further improve OMBR technology and drive it from laboratory research to real practical applications.

Original languageEnglish
Pages (from-to)113-132
Number of pages20
JournalJournal of Membrane Science
Volume504
DOIs
Publication statusPublished - 15 Apr 2016
Externally publishedYes

Keywords

  • Forward osmosis (FO)
  • Membrane fouling
  • Osmotic membrane bioreactor (OMBR)
  • Salt accumulation
  • Wastewater

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