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ANALYSIS OF BASIS MEMBRANE POLLUTION AND RECENT ADVANCES IN THE FIELD OF POLLUTION MITIGATION STRATEGIES IN MBR
Nibusina Veronica Igorevna
Nizhny Novgorod State University of Architecture and Civil Engineering
master student
Nizhny Novgorod State University of Architecture and Civil Engineering
master student
Abstract
The membrane bioreactor (MBR) has emerged as an efficient compact technology for municipal and industrial wastewater treatment. The major drawback impeding wider application of MBRs is membrane fouling, which significantly reduces membrane performance and lifespan, resulting in a significant increase in maintenance and operating costs. Finding sustainable membrane fouling mitigation strategies in MBRs has been one of the main concerns over the last two decades. This paper provides an overview of membrane fouling and studies conducted to identify mitigating strategies for fouling in MBRs. Classes of foulants, including biofoulants, organic foulants and inorganic foulants, as well as factors influencing membrane fouling are outlined. Recent research attempts on fouling control, including addition of coagulants and adsorbents, combination of aerobic granulation with MBRs, introduction of granular materials with air scouring in the MBR tank. The addition of coagulants and adsorbents shows a significant membrane fouling reduction, but further research is needed to establish optimum dosages of the various coagulants/adsorbents. Similarly, the integration of aerobic granulation with MBRs, which targets biofoulants and organic foulants, shows outstanding filtration performance and a significant reduction in fouling rate, as well as excellent nutrients removal. However, further research is needed on the enhancement of long-term granule integrity.
Keywords: aerobic granulation, EPS, extracellular polymeric substances, membrane bioreactor, membrane fouling, SMPS, soluble microbial products, wastewater treatment
Category: 05.00.00 Technical sciences
Article reference:
Analysis of basis membrane pollution and recent advances in the field of pollution mitigation strategies in MBR // Modern scientific researches and innovations. 2017. № 1 [Electronic journal]. URL: https://web.snauka.ru/en/issues/2017/01/77164
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