Integrated approach to textile wastewater treatment: Investigating electrocoagulation, MBBR, and adsorption synergy

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-07-21 DOI:10.1016/j.jwpe.2025.108364

Rachmad Ardhianto , Ganjar Samudro , Sarwoko Mangkoedihardjo , Siti Taura Isratul Izmi

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引用次数: 0

Abstract

The textile industry generates wastewater that high in colour, chemical oxygen demand (COD), and total suspended solids (TSS), and which is difficult to process using conventional biological or chemical techniques. This study presents the performance of a pilot-scale integrated treatment system combining electrocoagulation with clarifier air flotation (EC-CAF), a moving bed biofilm reactor (MBBR), and activated carbon adsorption for the advanced treatment of textile wastewater. Real effluent (50 m³/day) was treated under optimised operating conditions. The EC-CAF unit, operating at a current density of 628.90 ± 88.28 A/m², achieved removal efficiencies of 68.1 % for COD, 97.3 % for TSS, and 98.0 % for colour. The MBBR, designed with a media surface area of 500 m²/m³ and loaded at 1.07 ± 0.72 g COD/m³·day, achieved additional COD removal of 56 ± 19.5 %. The final adsorption stage using granular activated carbon (iodine number 1000 mg/g) removed 46.2 ± 23.3 % COD, 59.2 ± 25.9 % TSS, and 65.1 ± 20.2 % colour. Overall, the integrated system reached 93.74 % COD, 99.57 % TSS, and 99.62 % colour removal. The energy consumption was 5.18 kWh/m³, while the treatment cost was USD 0.435/m³, substantially lower than that for conventional chemical coagulation–adsorption systems, which cost USD 13.21/m³. Challenges such as electrode passivation and fluctuating influent loads were managed through operational controls and buffer tanks. The study provides evidence of a cost-effective, scalable, and energy-efficient approach for reusing textile wastewater, offering scope for improvement through the integration of renewable energy and more widespread industrial uses.

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纺织废水的综合处理：电絮凝、MBBR和吸附协同作用的研究

纺织工业产生的废水颜色、化学需氧量（COD）和总悬浮固体（TSS）很高，很难用传统的生物或化学技术处理。研究了电混凝-澄清气浮（EC-CAF）、移动床生物膜反应器（MBBR）和活性炭吸附相结合的中试综合处理系统对纺织废水的深度处理效果。实际污水（50立方米/天）在优化的操作条件下处理。EC-CAF装置在628.90±88.28 a /m2的电流密度下运行，COD去除率为68.1%，TSS去除率为97.3%，颜色去除率为98.0%。MBBR设计的介质表面积为500 m2/m3，负荷为1.07±0.72 g COD/m3·d， COD的额外去除率为56±19.5%。最终吸附阶段采用颗粒活性炭（碘值1000 mg/g）， COD去除率为46.2%±23.3%，TSS去除率为59.2%±25.9%，色度去除率为65.1±20.2%。总体而言，综合系统达到93.74%的COD， 99.57%的TSS和99.62%的去色。能耗为5.18 kWh/m3，处理成本为0.435美元/m3，大大低于常规化学混凝-吸附系统13.21美元/m3的处理成本。通过操作控制和缓冲罐来管理诸如电极钝化和波动的进水负荷等挑战。该研究为纺织废水的再利用提供了一种成本效益高、可扩展且节能的方法，并通过将可再生能源与更广泛的工业用途相结合，为改进提供了空间。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies