Onsite soil treatment process
First Claim
1. The method of `in situ` collection and treatment of floating, sinking and dissolved contaminants existent up to considerable depths in a soil environment comprising the steps of forming an in-ground diversionary water barrier as a boom around at least the downstream area of said soil environment and to a depth at least as great as the presence of contaminants affecting in-ground water flow, and providing collection and treatment means at a substantial depth to create an in-ground containment reservoir to collect said contaminants within said in-ground reservoir primarily for `in situ` treatment of said contaminants into non-contaminating condition.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to the method of `in situ` collection and treatment of floating, sinking and dissolved contaminants in a soil environment which involves forming an in-ground diversionary water barrier as a boom around at least a portion of the waste site on the down-gradient side of the in-ground water flow, as a bottomless tank that through water removal creates an in-flow or in-gradient condition causing water to flow into and up in the tank area, or to control the downward flow and eventual discharge but control the detection time within the bottomless tank. The barrier involves forming an in-ground diversionary temporary water barrier as a boom around at least a portion of the waste site on the downstream side of in-ground water flow. The barrier preferably extends at least as deep as the in-ground contaminated water flow into the aquifer. The method utilizes collection and treatment members in the form of tubular pipes extending vertically or inclinedly adjacent the said barrier to form one or more collection reservoirs for the collection and treatment of contaminants in place or when removed to the surface such as by pumping. The method can be practiced over relatively short or long periods of time as long as the contaminants flow into the ground water. The said barrier maintains and controls both surface and in-ground water flow into and through the contaminated site to facilitate virtually complete removal and/or elimination of pollutants from the waste site area. The method may also be used to treat the contaminants in place in relatively deep reservoirs formed within the waste site or their removal to above-ground processing and elimination operations. The method permits anaerobic and aerobic treatment of the contaminants in-ground reservoirs or sumps where the contaminants are collected and treated, such as by bacterial growth, by most efficient and economical forms of treatment at and within the waste site.
44 Citations
18 Claims
- 1. The method of `in situ` collection and treatment of floating, sinking and dissolved contaminants existent up to considerable depths in a soil environment comprising the steps of forming an in-ground diversionary water barrier as a boom around at least the downstream area of said soil environment and to a depth at least as great as the presence of contaminants affecting in-ground water flow, and providing collection and treatment means at a substantial depth to create an in-ground containment reservoir to collect said contaminants within said in-ground reservoir primarily for `in situ` treatment of said contaminants into non-contaminating condition.
- 16. The method of `in situ` collecting and treating of floating, sinking and dissolved contaminants existent up to considerably depths in a soil environment comprising the steps of forming an in-ground vertical water barrier as a boom to control and maintain the flow of in-ground water, said barrier being positioned around the downstream area of said contaminated soil environment to a depth at least as great as the presence of contaminants affecting in-ground water flow, introducing a plurality of vertical tubular members into the contaminated soil environment upstream and adjacent to said water barrier to form one or more in-ground containment reservoirs for said contaminants, and employing the said vertical tubular members to collect and treat said contaminants in place without displacement of the soil environment.
Specification