Combined biological wastewater treatment with electrocoagulation as a post-polishing process: A review

This review focuses on combined biological treatment with electrocoagulation as a post-polishing process to enhance treated effluents quality. We analyzed the main findings found in the literature and discussed many parameters used to optimize the process. Some studies used biological-pretreated was...

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Published inSeparation science and technology Vol. 55; no. 13; pp. 2334 - 2352
Main Authors Al-Qodah, Zakaria, Al-Qudah, Yahiya, Assirey, Eman
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 01.09.2020
Taylor & Francis Ltd
Subjects
Aluminium
Aluminum
Biological activity
Biological wastewater treatment
combined treatment processes
EC-assisted treatment
Effluent treatment
Effluents
Electrocoagulation
Electrodes
Energy consumption
Polishing
Pollutants
post-treatment processes
Wastewater treatment
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Summary:This review focuses on combined biological treatment with electrocoagulation as a post-polishing process to enhance treated effluents quality. We analyzed the main findings found in the literature and discussed many parameters used to optimize the process. Some studies used biological-pretreated wastewater while others applied combined system consisted of biological step followed by electrocoagulation step. The effluent quality in this combined system has been improved since more pollutants have been removed, especially when using an aluminum electrode. The main problems associated with the electrocoagulation process are energy consumption and electrode passivation. We presented many concluding remarks and recommendations for further studies.
Bibliography:ObjectType-Article-1
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ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2019.1626891