Dewatering and fuel treatment

Solid waste treatment steps include dewatering of sludge and combustion in an incinerator, bark boiler, or fossil-fuel-fired boiler. Sludges from a clarifier are dewatered and may be incinerated otherwise, they are landfilled. 

Mursito, AT. Hirajima, T. Sasaki, K. (2010). Upgrading and dewatering of raw tropical peat by hydrothermal treatment. Fuel, Vol.89, pp. 635-41. 

Process Description. An incineration system eonsists of three main units feed preparation and handling, primary combustion unit, and off-gas treatment. Feed preparation usually includes screening to remove oversized particles that could clog or jam the combustion unit. Oversized waste may be shredded so that it can be incinerated, or treated or landfilled separately. Sludge is usually dewatered to make the material easier to feed to the incinerator and to limit the fuel cost associated with heating, volatilizing, and treating the water in the incinerator. 

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