GASIFICATION PROCESS AS A COMPLEX METHOD OF SEWAGE SLUDGE TREATMENT

Today, there is a rising interest in many countries in “traditional ” (e.g. agro and forest) biomass and waste biomass (e.g. sewage sludge) utilization processes (e.g. combustion, co-combustion, gasification and pyrolysis). During the last twenty years, there has been a major change in the way that sludge is disposed. For example, in the European Union (EU) landfill or water deposition of the sewage sludge with the e.g. higher heating value (HHV) equal to 6 MJ/kg will be prohibited. In light of there is a large and pressing need for the development of thermal methods for the disposal of sewage sludge. Gasification has several advantages over traditional combustion process. This work investigates sewage sludge gasification in a fixed bed gasifier. The effects of operating conditions on the gasification process were investigated