Inderscience Publishers

An analysis of the environmental management elements related to the improvements of the drying kinetics of waste activated sludge by Fenton peroxidation

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Advanced sludge treatment processes (AST) reduce the amount of sludge produced and improve the dewaterability, thus probably also affecting the heat transfer properties and the drying characteristics of the sludge. This paper studies the influence of the Fenton peroxidation on the thermal conductivity of the sludge. Results demonstrate that the Fenton's peroxidation improves the sludge cake consistency and increases the thermal conductivity and heat transfer coefficient, thus enhancing the drying characteristics of the dewatered sludge. The improved thermal characteristics and increased dewaterability reduce the required size of indirectly-heated sludge dryers.

Keywords: sludge treatment, environmental management, heat transfer, hydrogen peroxide, Fenton', s reagent, Fenton', s peroxidation, drying kinetics, thermal conductivity, dewatered sludge, waste management, waste activated sludge, wastewater treatment

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