Effect of High Current Density in Electrocoagulation Process for Sewage Treatment

Abstract

Sewage is the main point-source pollutant on a global scale. Sewage, on the one hand, normally contained of biological, chemical and physical composition which is usually high in biochemical oxygen demand, chemical oxygen demand and suspended solid. So, direct discharge of raw or improper treated sewage into the water body is one of the main sources of pollution on a global scale. There are two main objectives of wastewater treatment, one is protecting the environment and the other one is conserving fresh water resources. These days, various physiochemical and biological technique have been employed to treat sewage water such as aerobic and anaerobic biological treatment, membrane filtration, adsorption, chemical coagulation and many others methods. Although the treatment techniques that mentioned above can be applied as the efficient methods, either they took a long period of time or needed a large amount of chemical substance, both ways are less effective in treating sewage water where it requires a short time treatment and an environmental compatibility with free chemical effect. Simple, affordable and efficient sewage wastewater treatment systems are urgently needed in developing countries because most of the conventional technologies currently in use in industrialized nations are too expensive and complex. Electrocoagulation is one of the simple methods to treat wastewater efficiently. This electrochemical treatment seems to be a promising treatment method due to its high effecEffect of High Current Density in Electrocoagulation Process for Sewage Treatment

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Identifiers

DOI

10.14233/ajchem.2014.16134

Journal

Asian Journal of Chemistry

Year

2014