Treatment of textile wastewater in a single‐step moving bed‐membrane bioreactor: Comparison with conventional membrane bioreactor in terms of performance and membrane fouling

IF 1.7 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Water and Environment Journal Pub Date : 2024-07-04 DOI:10.1111/wej.12942

Emine Sule Tecirli, Kadir Akgun, Abdulkadir Caglak, Hanife Sari Erkan, Guleda Onkal Engin

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Abstract

Membrane bioreactor (MBR) is a promising technology for the treatment of municipal and industrial wastewater, including highly contaminated textile wastewater. However, membrane fouling remains a critical challenge due to reduced flux. This study investigates the efficacy of a moving bed MBR (MB‐MBR) technology for textile wastewater treatment, focusing on chemical oxygen demand (COD) removal, and its impact on mitigating membrane fouling. In a 50‐day study, a conventional MBR (R1) was compared with an MB‐MBR (R2) augmented with free‐floating biocarriers (accounting for 20% of the reactor volume). Both systems used flat sheet ceramic membrane modules. The results indicate that the MB‐MBR achieved superior performance, with COD and colour removal of 89% and 81%, respectively, compared with 87% and 73% in the conventional MBR. Importantly, the introduction of biocarriers eliminated the need for offline physical membrane cleaning in the MB‐MBR. The free‐floating biocarriers lowered transmembrane pressure, reduced capillary suction time and reduced fouling through their scouring action.

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用单步移动床-膜生物反应器处理纺织废水：与传统膜生物反应器在性能和膜堵塞方面的比较

膜生物反应器（MBR）是一种用于处理城市和工业废水（包括高污染纺织废水）的前景广阔的技术。然而，由于通量减少，膜污垢仍然是一个严峻的挑战。本研究调查了移动床 MBR（MB-MBR）技术在纺织废水处理方面的功效，重点是化学需氧量（COD）的去除及其对减轻膜污垢的影响。在一项为期 50 天的研究中，对传统 MBR（R1）和添加了自由浮动生物载体（占反应器容积的 20%）的 MB-MBR（R2）进行了比较。两个系统都使用了平板陶瓷膜组件。结果表明，甲基溴-多溴联苯反应器性能优越，化学需氧量和色度去除率分别为 89% 和 81%，而传统多溴联苯反应器的去除率分别为 87% 和 73%。重要的是，生物载体的引入消除了 MB-MBR 中离线物理膜清洗的需要。自由浮动的生物载体降低了跨膜压力，减少了毛细管抽吸时间，并通过其冲刷作用减少了污垢。

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来源期刊

Water and Environment Journal 环境科学-湖沼学

CiteScore

4.80

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： Water and Environment Journal is an internationally recognised peer reviewed Journal for the dissemination of innovations and solutions focussed on enhancing water management best practice. Water and Environment Journal is available to over 12,000 institutions with a further 7,000 copies physically distributed to the Chartered Institution of Water and Environmental Management (CIWEM) membership, comprised of environment sector professionals based across the value chain (utilities, consultancy, technology suppliers, regulators, government and NGOs). As such, the journal provides a conduit between academics and practitioners. We therefore particularly encourage contributions focussed at the interface between academia and industry, which deliver industrially impactful applied research underpinned by scientific evidence. We are keen to attract papers on a broad range of subjects including: -Water and wastewater treatment for agricultural, municipal and industrial applications -Sludge treatment including processing, storage and management -Water recycling -Urban and stormwater management -Integrated water management strategies -Water infrastructure and distribution -Climate change mitigation including management of impacts on agriculture, urban areas and infrastructure