Underground leachate and pollutant drainage barrier system

Details Underground leachate and pollutant drainage barrier system Underground leachate and pollutant drainage barrier system

1983-07-26

1989-09-05

Reese, Randolph A.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

405 38, 405 50, 405157, 405179, 405267, 299 11, E02B 1100, F16L 102

Patent

active

048633127

ABSTRACT:
A leachate and pollutant drainage barrier system is formed by excavating a narrow slit or slot in the earth in the presence of a reversable slurry mud which changes from a highly viscous character after a predetermined period of time (approximately 5-7 days) needed to maintain the trench open to permit the laying of a drainage pipe at the bottom of the trench and the filling of the trench with a pervious fill, such as gravel, etc. After the fill has been installed, lateral support for the earth walls is provided by the pervious fill material and the slurry reverts to a liquid having a substantially lower viscosity which may be drained via the drain pipe in the bottom of the trench. In a preferred embodiment the slurry is a biodegradable polymer. In addition, a plastic film or layer can be installed in the trench.

REFERENCES:
patent: 3310952 (1967-03-01), Veder
patent: 3603097 (1971-09-01), Zakiewicz
patent: 3603099 (1971-09-01), Zakiewicz
patent: 3625010 (1971-12-01), Hakundy
patent: 4335978 (1982-06-01), Mutch
patent: 4352601 (1982-10-01), Valiga
patent: 4358221 (1982-11-01), Wickberg
patent: 4366846 (1983-01-01), Curah
patent: 4375930 (1983-03-01), Valiga
patent: 4379591 (1983-04-01), Tassoney
patent: 4430021 (1984-02-01), Wagner et al.
"Slurry Trench Construction", The Military Engineer, Nov.-Dec. 1976.

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