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US 6,207,114 B1Granted
Reactive material placement technique for groundwater treatment
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsJacqueline W. Quinn, Christan A. Clausen, Debra R. Reinhart, Manoj B. Chopra
Life of this patent
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Abstract
The invention provides a permeable treatment wall comprising one or more high-permeability columns, as well as a methods for preparing such a permeable treatment wall.
Claims17
A method of constructing a permeable treatment wail made of one or more columns comprising:
- inserting a member into soil where a column is to be located, to create a void, wherein the member creates the void without substantial excavation of soil;
- placing a zero-valent metal, sand, gravel, or a mixture thereof into the void;
- and decreasing soil density in an area including the void to define the column after the zero-valent material has been placed in the void using deep soil mixing.
A ground water treatment system comprising:
- a plurality of permeable treatment columns vertically extending into the ground, the columns comprising a zero-valent metal, sand, or gravel, or a mixture thereof, wherein the columns are formed by a member inserted into the soil to create a void into which the zero-valent metal, sand, or gravel, or a mixture thereof is inserted to form the column, the void being formed by the member without substantial excavation of soil, wherein the volume of each column is defined by deep soil mixing after the zero-valent metal has been placed in the void.
A method of constructing a permeable treatment wall made of one or more columns comprising:
- inserting a member into soil where a column is to be located, to create a void, wherein the member creates the void without substantial excavation of soil;
- placing a reactive material into the void;
- and deep soil mixing the reactive material with the soil after the reactive material has been placed in the void.
Dependencies are inferred from the claim text.