METHOD AND SYSTEM FOR THE IN-SITU DECONTAMINATION OF CONTAMINATED SOILS
1 Assignment
0 Petitions
Accused Products
Abstract
A method and an associated system for in-situ decontamination of a contaminated soil region (2) which contains degradable pollutants, in which a fluid substance is introduced into the soil (1) using an injection device (4, 4′), wherein the fluid substance is introduced into the soil using a pressure injection method in a pressure-controlled manner and/or with an injection device that has a valve pipe with a pressure-controlled outlet valve.
7 Citations
25 Claims
-
1. (canceled)
-
3. (canceled)
-
6. (canceled)
-
10. (canceled)
-
11. (canceled)
-
16. (canceled)
-
18. A method for in-situ decontamination of a contaminated soil region which contains pollutants degradable with a decontaminating fluid substance through chemical oxidation, comprising:
-
selecting an injection pressure from a plurality of available injection pressures, introducing a first component of the fluid substance via a first conduit to a depth horizon of the contaminated soil region, introducing a second component of the fluid substance via a second conduit segregated from the first conduit to the depth horizon of the contaminated soil region, mixing the introduced first component and the introduced second component at the depth horizon to produce the decontaminating fluid substance, and injecting the decontaminating fluid substance at the selected pressure from at least one outlet valve into at least the contaminated soil region. - View Dependent Claims (2, 7)
-
-
19. A method for in-situ decontamination of a contaminated soil region which contains pollutants degradable with a decontaminating fluid substance through chemical oxidation, comprising:
-
selecting an injection pressure from a plurality of available injection pressures, selecting from among a plurality of available upper and lower axial boundaries constraining propagation elevations for the decontaminating fluid substance, and injecting the decontaminating fluid substance at the selected pressure and within the selected boundaries from at least one outlet valve into at least the contaminated soil region, wherein the axial boundaries each extend radially outward and at least partly around the outer valve. - View Dependent Claims (4, 5, 8, 9, 20)
-
-
21. A system for in-situ decontamination of a contaminated soil region which contains degradable pollutants, comprising:
-
a source configured to provide a first component of a decontaminating fluid substance and a second component of the fluid substance segregated from the first component, an outlet valve arranged at a depth of the contaminated soil region in the soil, an injection line extending between the source and the outlet valve, a pump arranged in the injection line, and a mixing device arranged in the injection line between the pump and the outlet valve, and configured to mix the first component and the second component, wherein the injection line comprises a superterranean portion and a subterranean portion, and wherein the mixing device is arranged in the subterranean portion of the injection line. - View Dependent Claims (12, 17, 23)
-
-
22. The system as claimed in 21,
wherein the mixing device is arranged at a depth in the soil corresponding at least substantially to a depth in the soil of the outlet valve.
-
24. A system for in-situ decontamination of a contaminated region which contains degradable pollutants in a soil, comprising:
-
a source configured to provide a decontaminating fluid substance, an outlet valve arranged at a depth in the soil of the contaminated soil region, an injection line extending between the source and the outlet valve, a pump and a valve pipe arranged in the injection line, and obstructions extending radially from and at least partly circumferentially around the valve pipe towards the contaminated soil region, and configured to delimit propagation elevations of the decontaminating fluid substance to a depth range within the soil. - View Dependent Claims (13, 14, 15, 25)
-
Specification