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Mixed industrial wastewater treatment by combined electrochemical advanced oxidation and biological processes

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Title Mixed industrial wastewater treatment by combined electrochemical advanced oxidation and biological processes
 
Creator Popat, Amishi
Nidheesh, P. V.
Anantha Singh, T.S.
Suresh Kumar, M.
 
Subject Industrial Wastewater Treatment & Disposal
Water Pollution
Waste Water Treatment
 
Description Nowadays, because the quality and quantity of mixed industrial wastewater keep fluctuating in recent
times, the treatment of mixed industrial wastewater has gained more attention. The main target of this
study is to degrade the wastewater through a combination of electrochemical advanced oxidation processes (EAOPs) and biological treatment. To enhance the biodegradability of the wastewater, ElectroFenton process, along with external persulphate addition, was applied before the biological treatment.
The effect of voltage, catalyst concentration and persulphate dosage was studied. The optimized conditions selected for the experiments were pH-3, effective area-25 cm2
, electrode spacing-1 cm while
voltage-10 V, persulphate dosage-200 mg L1
, and catalyst dosage-10 mg L1 were optimized during the
experiments leading towards 60% of COD removal efficiency in course of 1 h of electrolysis. Addition of
tert-butyl alcohol and ethanol revealed the existence of sulphate and hydroxyl radicals as the major
oxidants that help in pollutant degradation by combining EAOPs and biological treatment. Overall 94%
COD removal efficiency was achieved. Therefore, for the organic pollutant degradation, combined process
serves to be an efficient and effective treatment option.
 
Publisher Elsevier
 
Date 2019
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1266/1/2019%20Amishi%20Chemosphere.pdf
Popat, Amishi and Nidheesh, P. V. and Anantha Singh, T.S. and Suresh Kumar, M. (2019) Mixed industrial wastewater treatment by combined electrochemical advanced oxidation and biological processes. Chemosphere, 237. p. 124419. ISSN 00456535
 
Relation http://dx.doi.org/10.1016/j.chemosphere.2019.124419
http://neeri.csircentral.net/1266/