Technical status and development prospect of biomass fuels prepared by sewage sludge and coal

In order to make full use of sewage sewage sludge and decrease its pollution,the status of sewage sludge disposal at domestic and abroad,research status of coal water slurry made from sewage sludge and coal,briquette fuels prepared by sewage sludge and coal or semi- coke and biomass fuels produced from sewage sludge and plant strew were introduced. The results showed that,the biomass fuels prepared by sewage sludge took fully advantage of efficient calorific value,the biomass fuels replaced a small amount of coal and provided effective technical way for sewage sludge use. There were also lots of problems during biomass fuels preparation,such as small capacity,high energy consumption,complex process,low calorific value. In order to resolve these problems,the paper provided development direction from strengthening research of high concentration coal water slurry made from modified sewage sludge,the development of efficient bonding agents which used in the preparation of fuel made from sewage sludge and straw,coal or semi- coke,the dewatering and drying technology of sewage sludge before briquetting,waterproofing technology of briquettes fuel,industrial applications of biomass fuel made from sewage sludge.