Method of using high molecular weight water soluble polymers...

Details Method of using high molecular weight water soluble polymers... Method of using high molecular weight water soluble polymers...

2005-03-29

2005-03-29

Hopkins, Robert A. (Department: 1724)

Liquid purification or separation

Processes

Treatment by living organism

C210S625000, C210S626000, C210S650000, C210S705000

Reexamination Certificate

active

06872312

ABSTRACT:
An activated sludge process for the clarification of wastewater comprising introducing the wastewater into a reactor where microorganisms consume organic material in the wastewater to form a mixed liquor comprising water, the microorganisms and an activated sludge; separating clarified water from the mixed liquor by filtration through a microfiltration or ultrafiltration membrane; separating the activated sludge from the mixed liquor; adding to the activated sludge at least one high molecular weight water soluble polymer to form a mixture of water and coagulated and flocculated solids; dewatering the coagulated and flocculated solids to form a mixture of dewatered solids and filtrate water; and recycling the filtrate water into the mixed liquor and a method of controlling polymer dosage, preferably using fluorescence emission spectroscopy.

REFERENCES:
patent: 5413719 (1995-05-01), Sivakumar et al.
patent: 6224769 (2001-05-01), Hasegawa et al.

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