Liquid wastes are wastes generated from industries which process the food, oil extraction unit’s, food processing units and pulping industries, starch extraction industries etc. The liquid waste if left untreated pollutes the environment and the ground water. This has organic content, which has an energy value. The COD and BOD levels determine the amount of biogas that will be produced. This organic waste when subjected to anaerobic conditions yield biogas which can either be converted to electricity for in-house applications or converted to steam which can be used in the process requirement of the industries.