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:: Volume 2, Issue 3 (Summer, 2015) ::
Environ. health eng. manag. 2015, 2(3): 129-134 Back to browse issues page
Feasibility of electrochemical oxidation process for treatment of saline wastewater
Kavoos Dindarloo , Hamza Ali Jamali , Parvin Lakbala , Hamid Mahmodi , Fatemah Kazemi
Corresponding Author: Assistant Professor, Department of Environmental Health Engineering, Qazvin University of Medical Sciences, Qazvin, Iran , jamalisadraei@yahoo.com
Abstract:   (4484 Views)

Background: High concentration of salt makes biological treatment impossible due to bacterial plasmolysis. The present research studies the process of electrochemical oxidation efficiency and optimal levels as important factors affecting pH, salt concentration, reaction time and applied voltage. Methods: The sample included graphite electrodes with specifications of 2.5 cm diameter and 15 cm height using a reactor with an optimum capacity of 1 L. Sixty samples were obtained with the aid of the experiments carried out in triplicates for each factor at 5 different levels. The entire experiments were performed based on standard methods for water and waste water treatments. Results: Analysis of variance carried out on effect of pH, salt concentration, reaction time and flow intensity in elimination of chemical oxygen demand (COD) showed that they are significant factors affecting this process and reduce COD with a coefficient interval of 95% and test power of 80%. Scheffe test showed that at optimal level, a reaction time of 1 hour, 10 g/L concentration, pH = 9 and 15 V electrical potential difference were obtained. Conclusion: Waste waters containing salt may contribute to the electro-oxidation process due to its cations and anions. Therefore, the process of electrochemical oxidation with graphite electrodes could be a proper strategy for the treatment of saline wastewater where biological treatment is not possible.

Keywords: Saline wastewater, Graphite electrode, Salinity removal, Electrochemical oxidation
eprint link: http://eprints.kmu.ac.ir/id/eprint/22199
Full-Text [PDF 400 kb]   (1183 Downloads)    
Type of Study: Research | Subject: General
Received: 2015/09/22 | Accepted: 2015/09/22 | Published: 2015/09/22
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Dindarloo K, Jamali H A, Lakbala P, Mahmodi H, Kazemi F. Feasibility of electrochemical oxidation process for treatment of saline wastewater. Environ. health eng. manag.. 2015; 2 (3) :129-134
URL: http://ehemj.com/article-1-88-en.html


Volume 2, Issue 3 (Summer, 2015) Back to browse issues page
مجله مدیریت و مهندسی بهداشت محیط Environmental Health Engineering And Management Journal
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