Ecology, Environment and Conservation Paper

ELECTRO CHEMICAL PROCESS FOR EFFECTIVE TREATMENT OF HOSPITAL WASTE WATER

Narendra Ramdas Borase and A. R. Warade

Abstract

Advanced Oxidation processes are used to oxidize complex organic constituents found in waste waters that are difficult to degrade biologically into simpler end products. Fenton and Electro Fenton (Chemical) both processes are classified under advanced oxidation process (AOP). The classical Fenton reagent, consisting of the reactions between homogeneous Fe+2 catalysts and hydrogen peroxide (H2O2), which is highly efficient for the reduction of COD due to the hydroxyl radicals generated by the Fenton reactions. AOP is waste water treatment technique in which highly oxidation agents used to oxidize the pollutants in wastewater. Advanced Oxidation Processes (AOP) is considered as best possible methods of clean and ecologically safe remedial treatment for the degradation of organics by using ozone, H2O2, ultrasound (US), ultraviolet radiation (UV), Fenton’s reagent (Fe+2H2O2) alone or in combination. Fenton’s Reagent is used to treat a variety of industrial wastes like dye stuffs, pesticides, wood preservatives, plastics additives, and rubber chemicals. The effect of operating parameters such as concentration, initial effluent pH and Fe+ 2 concentrations on Fenton system for the percentage color and chemical oxygen demand removal has been studied. The energy was also calculated for per order in the advanced oxidation process. Some metals have a special oxygen transfer property which helps in improving the utility of hydrogen peroxide. The most common metal of these is iron which, when used in the prescribed manner, results in the generation of highly reactive hydroxyl radicals (OH).