In situ treatment and analysis of wastes
First Claim
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1. An in situ method of treating hazardous waste in a disposal site having hazardous waste randomly distributed therein comprising the steps of:
- (a) agitating a downwardly extending zone of particles of said hazardous waste at a first station on said site;
(b) maintaining said zone out of communication with the ambient atmosphere;
(c) analyzing vapors and gases which are liberated from said zone during said agitating to determine the identity of the toxic components therein;
(d) separating toxic gases and vapors identified by said sampling from said particles in said zone;
(e) detoxifying said separated toxic gases and vapors;
(f) injecting at least one treatment agent selected in accordance with the determined identity of the toxic components into said particles in said agitating zone;
(g) terminating said method when said sampling indicates said particles have been treated to a desired degree; and
(h) repeating said method at a second station at said disposal site that overlaps said first section.
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Abstract
Hazardous wastes are identified and treated in situ by forming a downwardly extending zone of particles in the waste. Toxic components in the waste are identified by injection of a pressurized fluid into the zone and capturing a sample of gases rising to the surface of the waste. At least one treatment agent is injected into the zone as appropriate until sampling indicates the particles of waste have been treated to a desired degree.
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Citations
24 Claims
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1. An in situ method of treating hazardous waste in a disposal site having hazardous waste randomly distributed therein comprising the steps of:
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(a) agitating a downwardly extending zone of particles of said hazardous waste at a first station on said site; (b) maintaining said zone out of communication with the ambient atmosphere; (c) analyzing vapors and gases which are liberated from said zone during said agitating to determine the identity of the toxic components therein; (d) separating toxic gases and vapors identified by said sampling from said particles in said zone; (e) detoxifying said separated toxic gases and vapors; (f) injecting at least one treatment agent selected in accordance with the determined identity of the toxic components into said particles in said agitating zone; (g) terminating said method when said sampling indicates said particles have been treated to a desired degree; and (h) repeating said method at a second station at said disposal site that overlaps said first section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification