Reactive material placement technique for groundwater treatment
First Claim
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1. 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.
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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.
58 Citations
17 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- 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;
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12. 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.
- View Dependent Claims (13)
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14. 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. - View Dependent Claims (15, 16, 17)
- 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;
Specification
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Current AssigneeThe United States of America As Represented By The Secretary of Agriculture
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Original AssigneeUnited States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration
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InventorsQuinn, Jacqueline W., Clausen, Christan A., Chopra, Manoj B., Reinhart, Debra R.
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Primary Examiner(s)Beisner, William H.
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Application NumberUS09/127,860Time in Patent Office988 DaysField of Search422/127, 422/128, 422/900, 210/747, 210/757, 210/170, 210/205, 166/249, 166/276, 166/278, 166/279, 166/280, 166/51, 166/52, 166/177.6, 166/227, 166/228, 405/128, 405/263, 405/133, 405/138, 175/19, 175/22, 175/64, 175/314US Class Current422/128CPC Class CodesB09C 1/002 involving in-situ ground wa...
