Method for cleaning underwater pipes of zebra-mussels or other o

Details Method for cleaning underwater pipes of zebra-mussels or other o Method for cleaning underwater pipes of zebra-mussels or other o

1995-08-28

1997-06-17

Warden, Jill

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

134 2212, 134 2218, B08B 100, B08B 904

Patent

active

056393121

ABSTRACT:
A method of removing animal growth organisms and such foreign material from the inside surface of an underwater pipe extended at its outlet end into a wet well at a pumping shore station, by inserting a bladed cleaning device in the pipe at the wet well and pulling it to a spaced inlet end of the pipe, the cleaning device having stationary rigid circumferential and radial cutting edges suited to core chuncks of foreign matter free from the pipe surface and dice them into smaller pieces of the foreign material. The method further provides injecting fluid under pressure from the cleaning device toward the bottom of the pipe as a fluid stream of sufficient velocity for raising the foreign matter chuncks and pieces into suspension with water in the pipe, and pulling the cleaning device axially within the pipe back toward the wet well. The method further provides continuously removing such foreign matter chuncks and pieces from a containment area in the wet well via an air lift passageway extended vertically between the containment area and an overlying spillway disposal system by discharging compressed air continuously to the lower end of the passageway, this air lift action also serving to draw water and the suspended chuncks and pieces of foreign matter in the pipe toward and into the containment area and wet well.

REFERENCES:
patent: 2735122 (1956-02-01), Pletcher
patent: 2874078 (1959-02-01), Reinhart
patent: 4312679 (1982-01-01), Klein, Sr.
patent: 4337096 (1982-06-01), Clifford
patent: 5069722 (1991-12-01), Murphy
patent: 5090079 (1992-02-01), Allison et al.

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