The technology for drying sludge consists of a series of belts on which the sludge from the centrifuge or belt filter outlet is distributed, with solids concentrations of 16 to 35%. These belts transport the sludge through different drying stages, until reaching solids concentrations of 65 to 90%. (Humidity of 10 to 35%). The appropriate heat source for each case will depend on the costs of the different options available in each region.

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