Jun 10, 2019· Mechanical dewatering is normally associated with large wastewater treatment plants and is used to separate sludge (residual sludge from wastewater treatment plants or faecal sludge from onsite sanitation) into a liquid and a solid part. The principal methods are belt filter presses, centrifuges and chamber filter presses.
Iran. J. Chem. Chem. Eng. Investigation of the Excess Sludge … Vol. 28, No. 4, 2009 97 Ozonation assisted sludge reduction process is based on the idea that part of activated sludge is mineralized to carbon dioxide and water, while part of sludge is solubilized to biodegradable organics that can be biologically treated.