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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Enhancement of COD-Nutrients Removals and Filterability of Secondary Clarifier Municipal Wastewater Influent Using Electrocoagulation Technique
Separation Science and Technology (Philadelphia), Volume 48, No. 4, Year 2013
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Description
The present work studied experimentally the variations of some characteristics of the mixed liquor solution in wastewater treatment plants (WWTPs) under the effect of electrocoagulation (EC) technique. Unlike conventional methods, electrocoagulation was performed using cylindrical perforated iron electrodes to achieve a good distribution of the applied DC field onto the municipal wastewater. Effects of electrocoagulation time, applied voltage gradient, and aeration on the mixed liquor characteristics were considered. The study figured out the dependency of the local pH and oxidation potential reduction (OPR) values, near anode and cathode on these operational conditions. It was found that electrocoagulation process reached steady state conditions in no more than 60 minutes. At high voltage gradient (6 V/cm), the steady removal efficiencies of COD and nutrients exceeded 89%. While aeration showed moderate influence on removal efficiencies and wastewater sludge filterability, it significantly affected the pH and ORP near the electrodes especially at the low voltage gradient. Results also indicated that the sludge filterability was improved notably by increasing the voltage gradient to have minimal levels of specific-resistance to filtration (SRF). © 2013 Copyright Taylor and Francis Group, LLC.
Authors & Co-Authors
Al-Shannag, Mohammad
Jordan, Al Salt
Al-balqa Applied University
Bani-Melhem, Khalid
Jordan, Zarqa
Hashemite University
Al-Anber, Zaid Ahmed
Jordan, Al Salt
Al-balqa Applied University
Al-Qodah, Zakaria
Jordan, Al Salt
Al-balqa Applied University
Statistics
Citations: 67
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1080/01496395.2012.707729
ISSN:
01496395
e-ISSN:
15205754
Research Areas
Environmental