Volume No. 10 Issue No.: 2 Page No.: 239-251 October-December 2015

 

A PILOT SCALE STUDY ON IN-VESSEL COMPOSTING OF ORGANIC WASTE USING FORCED AERATION

 

Kumar A. Rasappan K. and Santhosh P.

1. Karpagam University, Coimbatore, Tamil Nadu (INDIA) 2. Coimbatore Institute of Technology, Coimbatore, Tamil Nadu (INDIA) 3. Department of Chemical Engineering, Kongu Engineering College, Perundurai, Erode, Tamil Nadu (INDIA)

 

Received on : July 10, 2015

 

ABSTRACT

 

The conventional composting processes are viable sludge disposal options that produce marketable end products. The conventional process is based on natural ventilation where as the aerated method uses forced mechanical aeration. This study is based on the experimental data on biodegradation of organic wastes with different C:N ratios. Further, their conditions in-vessel composting units have been presented and detailed analysis on the stabilization of organic wastes was performed. The study was executed under natural and forced aeration. Four separate amendment conditions were applied to stimulate varying degrees of bioconversion rate. Optimum conditions were maintained inside the vessel by means of proper aeration, moisture and sufficient mixing. Several of nutrient values (carbon, nitrogen, phosphorus, potassium) during temperature, pH and volatile solids were carried out on alternate days. The process was carried out in the laboratory scale reactors using different types of organic wastes such as paper and pulp, diary sludge, sugar industry wastes, saw dust and municipal solid waste. Then their compost stability was assessed.

 

Keywords : MSW, Saw dust, Pulp and paper mill sludge, Dairy effluent, Sugar industry sludge, EM solution

 

 

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