Dryer & Incineration


Andritz Gouda – Paddle Dryer is a indirect or convective sludge heating system that evaporates (dries) liquid from sludge that it receives from a centrifuge or belt filter press. The dryer consists of a trough containing two counter rotating shafts, arrayed with paddles.The hollow design of the paddle shafts means that the entire interior surface acts as one large heat exchanger. Controlled agitation by the rotating shafts with paddles deliver superb product-to-surface interaction, for an optimal heat transfer rate.


Andritz – Belt Drying System – provides highly desired Class A Biosolids in a highly marketable sludge pellet / granule. The process granulates the dewatered sludge in a mixer with product that has already been dried. The moist granulate produced here is distributed evenly over the belt in the dryer by a specially designed feed module. The even layer of material on the belt creates optimum conditions for even distribution of the drying air. This, in turn, is necessary for even heating and drying of the sewage sludge. 

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