Particle size selective remediation system and method for heavy metals-contaminated soil by dry-disintegration and separation
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United States of America Patent
Stats
-
May 16, 2017
Grant Date -
Feb 5, 2015
app pub date -
Mar 21, 2013
filing date -
Mar 22, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a system and method of remediating heavy metal-contaminated soil using dry disintegration in a particle size-selective manner. The system for remediating contaminated soil comprises: a pretreatment unit for pretreating the contaminated soil to control the water content and the size of the soil; a disintegration unit for disintegrating the pretreated soil into individual particles; a particle separation unit for separating the disintegrated particles a standard particle size; a heavy metal removal unit for peeling off the surface of the separated soil particles larger than the standard particle size using a surface friction force and an impact force to remove heavy metals in dry condition; and a separation and collection unit for separating and collecting the peeled-off surface from the soil particles.
First Claim
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International Classification(s)
- 2013 Application Filing Year
- B02C Class
- 393 Applications Filed
- 346 Patents Issued To-Date
- 88.05 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B02C Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 16, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 16, 2028 |
