Method for the cleaning of water mains

Details Method for the cleaning of water mains Method for the cleaning of water mains

1997-05-28

1999-06-29

Alexander, Lyle A.

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2214, B08B 304, B08B 902

Patent

active

059153954

ABSTRACT:
A method of cleaning water mains includes isolating a section of water main. Compressed air is then used to blow out the water within the water main. The water main is actually cleaned by interspersing slugs of water between sections of compressed air. The compressed air includes atomized chlorine and a polyphosphate inhibitor. Once the water main has been cleaned, the flow of water is returned to the isolated section.

REFERENCES:
patent: 4818298 (1989-04-01), Shishkin et al.
patent: 5007461 (1991-04-01), Naf
patent: 5045352 (1991-09-01), Mueller
patent: 5127961 (1992-07-01), Aiton
Elvidge, A. F., Air Scouring of Water Mains--A Method of Operation, Apr. 1982, pp. 1-46.

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