Electrocoagulation of Canteen Waste Water Using Aluminium and Steel Electrodes

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International Journal of Research and Scientific Innovation (IJRSI) | Volume V, Issue IV, April 2018 | ISSN 2321–2705

Electrocoagulation of Canteen Waste Water Using Aluminium and Steel Electrodes

Aswathi Mithran#, Gana VB*, Anjali S*

IJRISS Call for paper

#Assistant Professor, Dept. Of Civil Engineering, *Student M TECH (Environmental Engineering), M DIT Ulliyeri, India

Abstract-Treatment of canteen wastewaters by electrocoagulation using aluminium and steel electrode plate has been investigated in this project. A sample of 600 cubic centimeters is taken in the electrolytic cell and is made up to run at different interval of time i.e,10, 15,20,25 minutes and different volts (20V, 25V, 30V). The combination effects of Volts and treatment time to the efficiency of the electrocoagulation process for the removal of Biochemical Oxygen Demand, Turbidity was considered to evaluate the treatment efficiencies. The results showed that effluent waste water was very clear, and the quality exceeded the general effluent standards. Aluminium is the suitable plate for the removal of waste as it removes 94.4% of BOD when compared to steel plate which only removes 83% at 30 volts in 25 minutes. Turbidity reduced to 98.59 % by using aluminium plate at 30 volt for 25 minute treatment time on the other hand by using steel it only reduced to 97.79% at 30 V for a treatment time of 10 minute.pH level can be brought to a neutral range of 7 by using steel plate when compared to aluminium plate.

Keywords-Electrocoagulation, BOD, COD, pH, Turbidity

I. INTRODUCTION

Electrocoagulation (EC) has been suggested as an advanced alternative to chemical coagulation in pollutant removal from raw waters and wastewaters. In this technology, metal cations are released into water through dissolving metal electrodes. Simultaneously, beneficial side reactions can remove flocculated material from the water. However, there are also adverse side reactions, such as deposition of salts on the electrode surface, which may cause deterioration of removal efficiency after long operation. As in the case of chemical coagulation with metal salts, aluminium or iron cations and hydroxides are the active compounds in EC. A host of very promising techniques based on electrochemical technology are being developed and existing ones improved that do not require chemical additions.