2014before disposing and further utilization. Sludge is disposed usually bylandfilling and incineration. The disposal of dairy sludge by landfill isnot good practice because its high nitrogen content creates the risk ofnitrate contamination of groundwater. Incineration of dairy sludge isnot an attractive option as it releases carbon and nitrogen oxides intothe atmosphere. Recycling of sludge is the only alternate eco-friendlymethod to create a sustainable environment. In general recycling ofdairy waste activated sludge is done by composting or by anaerobicdigestion. These recycling of sludge could be enhanced by stabilizationand by various pre-treatment methods