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BOD Removal by Adsorption Approach

Author(s):

H. Ajith Hebbar , Research Scholar, Dept. of Civil Engineering, Malnad College of Engineering, Hassan, India; K.S. Jayantha , Professor, Dept. of Civil Engineering, Malnad College of Engineering, Hassan, India

Keywords:

Laterite and BOD

Abstract

Biochemical Oxygen Demand is an important factor that is to be dealt carefully in wastewater treatment. Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period. Commonly, in treatment plants BOD is removed in various units like trickling filter, activated sludge unit, rotating biological contactors etc. The principle in these methods is to ensure break down of organic materials by micro organisms. In this experiment, a batch flow study was made to monitor removal of BOD by passing restaurant effluent through a pipe column containing grains (less than 10mm) of laterite. BOD reduction in the various samples was monitored for different flow rates and column heights. Fairly good reduction of BOD was observed, to a maximum extent of 91.3%. The reduction in the BOD was due adsorption of organic materials to lateritic grains. This can be viewed as a good pre treatment measure to reduce BOD before actually taking wastewater to treatment plant.

Other Details

Paper ID: IJSRDV3I60417
Published in: Volume : 3, Issue : 6
Publication Date: 01/09/2015
Page(s): 1151-1152

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