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Thermal destruction - non-oxidative

Non-oxidative thermochemical treatment of sewage sludge refers to treatment at elevated temperatures in the absence of oxygen. Methods include hydrothermal processes (HTPs), pyrolysis, and gasification, where gasification is based on partial oxidation of the organic carbon. Whereas pyrolysis and gasification require a substantially dry sludge product, HTPs are effective for sludges having a significant water content.

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Example of biomass pyrolysis treatment scheme Source: skocu /

Example of biomass pyrolysis treatment scheme

Example of biomass pyrolysis treatment scheme, whereby biomass is subjected to high temperatures, to concentrate the carbon and improve its grindability.

Thermal destruction - non-oxidative features and blogs

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Biosolids vs sewage sludge

Biosolids are usually considered to be the useful fraction of the sewage sludge. They are generally higher in solids concentration and lower in pathogen content, having gone through a stabilisation process such as chemical dosing, digestion and/or drying.

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