| 摘要 |
<p>A method of treating sewage sludge in liquid or slurry form includes heating the sludge in a heating tank [22] by means of a gas burner [2] which is totally immersed in the sludge. A pump [40] pumps sludge in the tank [22] through pipes [20] into the combustion chamber of the burner at a high speed thereby heating and sterilising the sludge. The sludge is then transferred to a digester [24] by a pump [48] where it is subjected to an anaerobic fermentation. The combustible gas produced in the digester is withdrawn by a pump [30] through a gas line [28], mixed with air and fed to the burner to serve as the burner fuel.</p> |
