C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 11/12 (2006.01) B01D 35/02 (2006.01)
Patent
CA 2715773
This invention is a technology in the sludge treatment field specializing in sludge dewatering equipment and installations. Sludge is produced as a waste product during wastewater treatment processes. The resulting sludge is high in organic content, and highly decomposable emitting foul odour. The sludge has low density and high moisture content. It is also a hydrophilic matter with a colloidal structure that poses challenges for dewatering. As sludge contains high nitrogen and phosphorous, if released into water body, it promotes eutrophication, resulting in low dissolved oxygen and deterioration of water quality. Sludge contains pathogen, parasites and other harmful substances which are transferrable to human within the biosphere causing health problems. This new technology provides effective treatment of sludge waste at relatively low energy consumption.
Hai Zhuqing
Na
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