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Treatment of Dairy Wastewater by Anaerobic Digestion Process

Author(s):

Rajani. Saranadgoudar , Department of Environmental Engineering, PDA College Of Engineering, Gulbarga.; Shashikant. R. Mise, Department of Civil Engineering, PDA College of Engineering, Gulbarga

Keywords:

Anaerobic Digestion, BOD, COD, Organic Loading Rate (OLR), dairy spent washes, Reactors

Abstract

In this study, experiments were conducted to investigate the production of biogas from dairy spent wash by using anaerobic digestion process. A laboratory scale digester with working volume of 8.0L was used. The experimental protocol was defined to examine the effect of the change in the organic loading rate on the efficiency of the production of biogas. The digester was operated at different organic feeding rates of 0.5, 1.0 and 1.5 kg COD/m3.d. The reactor showed stable performance with highest biogas yield of 1053ml with percent COD reduction of around 60.10% during loading rate of 1.5 kg COD/m3.d. As the time increased, percent COD removal and gas production increased and attained optimum value for each OLR. The maximum COD removal efficiency and gas produced on 30th, 61st and 91st day were 85.28%, 72.20%, 60.10% and 420mL, 825mL, 1053mL. Based on data from this study, implementation of anaerobic digestion as the method of waste treatment leads to the regional utilization of renewable energy resources, energy requirements and costs.

Other Details

Paper ID: IJSRDV6I120196
Published in: Volume : 6, Issue : 12
Publication Date: 01/03/2019
Page(s): 328-330

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