Method for thermally killing roots in sewer lines

Details Method for thermally killing roots in sewer lines Method for thermally killing roots in sewer lines

1976-07-26

1978-04-04

Bashore, S. Leon

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 22C, 134 24, B08B 310, B08B 902

Patent

active

040825671

ABSTRACT:
A heated fluid is used as a thermal herbicide for scalding and killing roots growing within sewer lines. The process includes the steps of heating a fluid, isolating a length of a sewer line, and then filling the isolated length of sewer line with the heated fluid for a lethal period of time required for the heated fluid to act as a thermal herbicide for killing the roots within the length of sewer line. When treating an adjacent length of the sewer line, the preheated fluid is removed from the preceeding section, reheated, and then inserted into the adjacent isolated length of the sewer line.

REFERENCES:
patent: 2251080 (1941-07-01), Taber
patent: 2976191 (1961-03-01), Weston
patent: 3171150 (1965-03-01), Gray
patent: 3535161 (1970-10-01), Gutrich
patent: 3600225 (1971-08-01), Parmelee
patent: 3741807 (1973-06-01), Horne

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