Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes  

作　　者：Yan Zhao Yangbo Qiu Natalie Mamrol Longfei Ren Xin Li Jiahui Shao Xing Yang Bart van der Bruggen 

机构地区：[1]Department of Chemical Engineering,KU Leuven,B-3001 Leuven,Belgium [2]School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [3]Department of Materials Science and Engineering,Massachusetts Institute of Technology,Cambridge,MA 02139,USA

出　　处：《Frontiers of Chemical Science and Engineering》2022年第5期634-660,共27页化学科学与工程前沿（英文版）

基　　金：support provided by the China Scholarship Council(CSC)of the Ministry of Education,China(CSC No.201708330281).

摘　　要：Discharged hospital wastewater contains various pathogenic microorganisms,antibiotic groups,toxic organic compounds,radioactive elements,and ionic pollutants.These contaminants harm the environment and human health causing the spread of disease.Thus,effective treatment of hospital wastewater is an urgent task for sustainable development.Membranes,with controllable porous and nonporous structures,have been rapidly developed for molecular separations.In particular,membrane bioreactor(MBR)technology demonstrated high removal efficiency toward organic compounds and low waste sludge production.To further enhance the separation efficiency and achieve material recovery from hospital waste streams,novel concepts of MBRs and their applications are rapidly evolved through hybridizing novel membranes(non hydrophilic ultrafiltration/microfiltration)into the MBR units(hybrid MBRs)or the MBR as a pretreatment step and integrating other membrane processes as subsequent secondary purification step(integrated MBR-membrane systems).However,there is a lack of reviews on the latest advancement in MBR technologies for hospital wastewater treatment,and analysis on its major challenges and future trends.This review started with an overview of main pollutants in common hospital wastewater,followed by an understanding on the key performance indicators/criteria in MBR membranes(i.e.,solute selectivity)and processes(e.g.,fouling).Then,an in-depth analysis was provided into the recent development of hybrid MBR and integrated MBR-membrane system concepts,and applications correlated with wastewater sources,with a particular focus on hospital wastewaters.It is anticipated that this review will shed light on the knowledge gaps in the field,highlighting the potential contribution of hybrid MBRs and integrated MBRmembrane systems toward global epidemic prevention.

关 键 词：membrane technology membrane bioreactor hospital wastewater hybrid MBR integrated MBR-membrane system 

分 类 号：X703[环境科学与工程—环境工程]