Sludge thickening apparatus

Patent · Tue Mar 31 00:00:00 EST 1981

OSTI ID:6226974

Mixon, J A

Sludge thickening apparatus is disclosed that is comprised of a vertical tank including sludge inlet and outlet pipes, and a discharge pipe weir; a vertical hopper within the tank having walls which diverge outwardly from a hopper bottom toward a top opening wherein the weir has openings communicating with the hopper interior; a cover plate closing the top opening and having a raised central portion with an opening; and a baffle plate spaced from the bottom opening and having an opening therethrough. A vertical airlift member is supported by the bottom of the tank and extends through the baffle opening, the bottom opening and communicates with the cover opening. An assembly including an air shut-off valve selectively controls air to the airlift member whereby the shutoff valve is closed when the outlet pipe is opened.

• Assignee: IFI; EDB-81-123081
• Patent Number(s): US 4259185
• OSTI ID: 6226974
• Resource Relation: Patent File Date: Filed date 26 Dec 1979
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SEWAGE SLUDGE
WASTE PROCESSING
WASTE PROCESSING PLANTS
EQUIPMENT
ACTIVATED SLUDGE PROCESS
PIPES
TANKS
VALVES
CONTAINERS
CONTROL EQUIPMENT
FLOW REGULATORS
INDUSTRIAL PLANTS
MANAGEMENT
PROCESSING
SEWAGE
WASTE MANAGEMENT
WASTES
420900* - Engineering- Waste Processing Plants & Equipment- (-1989)