Method for cleaning sewers

Details Method for cleaning sewers Method for cleaning sewers

1991-08-19

1992-07-14

Morris, Theodore

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2212, 134 10, 134 24, 134 34, 134167C, 1510431, B08B 302, B08B 904

Patent

active

051299577

ABSTRACT:
An apparatus and method for cleaning sewers of solid materials using normal and injected water flow to suspend the solids in a slurry. A submersible pump moves the slurry from the bottom of the sewer up to a pressurized container where the water content of the slurry is decanted and reused as injection water while the particulate material settles to the bottom of the pressurized container. When the container is filled with solid material it may be removed for emptying at a waste dump.

REFERENCES:
patent: 3600225 (1971-08-01), Parmelee
patent: 3658589 (1972-04-01), Shaddock
patent: 3897600 (1975-08-01), Burkholder
patent: 4134174 (1979-01-01), Flynn et al.
patent: 4160734 (1979-07-01), Taylor et al.
patent: 4578198 (1986-03-01), Schmidt et al.
patent: 4594153 (1986-06-01), Weis
patent: 5062963 (1991-11-01), Marcinkowski et al.

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