THEORETICAL DESIGN OF A NON-ENERGY RECOVERY INCINERATOR FOR AWKA MUNICIPALITY

Abstract

Waste management in Awka, the Capital City of Anambra State, Nigeria is the principal function of the Anambra State Waste Management Agency. Waste disposal practices in the area are mainly by open dumping and open burning which constitute serious health hazards to the residents and the environment. Use of well designed incinerators and well-built landfills are yet to attract some interest in the said area; probably because of the huge costs of equipment procurement and the expertise involved. The study aimed at designing a hypothetical non-energy recovery incinerating system for municipal solid waste generated in Awka Municipality. The incinerator is rated at a capacity of 45 tons/day, with a charging rate of 5.625 tons/hr. The relation between the refuse and the flue gases and the amounts of water and air required for complete combustion of the refuse and the necessary steps taken to ensure emission of clean gas through the stack are presented. Various assumptions were made which informed the design of the facility's combustion chambers. The materials flow/balance analyses are presented. It is hoped that this hypothetical design will provoke some interests that would lead to actual fabrication of the designed municipal solid waste incinerator for Awka urban area of Anambra State