Volume No. 12 Issue No.: 4 Page No.: 431-435 April-June 2018

 

THE TREATMENT OF SEWAGE WATER USING ELECTROLYSIS

 

Palak Patel1, Hitesh Desai*2 and Hemangi Desai3

1. TIFAC-CORE in Environmental Engineering, Surat (INDIA)
2. Sarvajanik College of Engineering and Technology, Surat (INDIA)
3. Shree Ramkrishna Institute of Computer Education & Applied Sciences, Surat(INDIA)

 

Received on : December 29, 2017

 

ABSTRACT

 

In this study, both batch- and pilot-scale electrolysis processes adopting steel, carbon and aluminium electrode were used for the treatment of sewage water in small-scale communities. Considerable COD removal around 80%, BOD removal around 80% and NH?-N removal around 58% could be achieved during 4 hrs retention time by batch electrolysis procedure using steel electrode as cathode and carbon electrode as anode. In another setup aluminium electrode was used as anode, observing same results. The same results were obtained by using 1 ppm NaCl solution as electro-coagulant. In continuous electrolysis procedure flow was maintained 0.27ml per second and retention time given was 1 hour per liter. 75% COD, 75% BOD and 40% NH?-N removal was obtained by using steel electrode as cathode and carbon electrode as anode. The value was gradually decreased with increasing retention time in both batch and pilot-scale experiments, which satisfy the discharge norms of sewage wastewater. The ORP value was considerably decreased in the pilot-scale experiment, which means that organics in the wastewater could be removed by increasing contact/retention time and chance for wastewater degradation was enhanced during the electrolysis procedure.

 

Keywords : Electrolysis, COD, BOD, Sewage, Electro coagulation

 

 

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