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| Environmental Technology Listing |
Title of Listing: | | Soil Washing |
Category: | | Treatment Technologies |
Subcategory: | * | Water, Waste, All Listings |
Media: | | Soil, Water |
Contaminants: | | |
Web Site: | | |
Email: | | |
Technology Description: | |
Technology Scientific, Ltd. (TSL) has developed the innovative Flow Consecutor Technology (FCT) (Patented in Canada.). The technology implements the intensively acting tubular agitator, named Flow Consecutor (FC), to replace any traditional agitator, (e.g. a stirred tank), for processing multi-phase mixtures. Required agitation and residence time for processing in a traditional agitator is scaled up to agitation of slurry, as it flows through the designed flow consecutor (FC).
Fluid agitation influences numerous processes, like adsorption of oily contaminants from soil on the surface of added coal particles, (selective coal agglomeration), adsorption of heavy metals from contaminated water on coal particles (de-ionization), solvent extraction of oil contamination from soil, and so forth.
Agitation by FC is usually combined with separation processes. Floatation is commonly used to separate coal agglomerates, while traditional screening or/and sedimentation can be used to separate solids, in such processes like de-ionization or solvent extraction.
Advantages of the FC device over traditional agitators are: reduction of energy consumption (about 100 times), reduction of required space (about 500 times), increased reliability (no moving parts), increased effectiveness (component processes are individually optimized) and environmental friendliness (enclosed piping system).
The FC can be combined with new intensive flotation apparatus (IFA), if flotation is applied to separate the agglomerates from cleaned soil and water. The IFA is a device that creates swirling horizontal forces. The centrifugal forces created determine the separation of the agglomerates at rates 50 times higher than in original gravitational flotation devices. In comparison to traditional flotation cell in which the process is driven by gravity, the IFA process is more intensive (about 50 times) because it is driven by centrifugal force of strongly swirled slurry. Combination of intensive FC and IFA makes the total unit very compact, which is an important factor when the mobility is considered.
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Performance Status/
Limitations: | |
Performance Status:
The FC process has been demonstrated on the bench-scale at the Alberta Research Council and at the University of British Columbia.
The 130 kg/h sand cleaning capacity bench-scale plant was set up and tested. Successful results have been obtained for coal agglomeration, diesel fuel and engine oil contaminated sands cleaning, clean up of water contaminated with oil and Cu, Pb and Zn ions. For example, the amount of contaminants in sands were reduced from the initial above classification level, 50,000 ppm (5.00%) to less than Class B, 380 ppm in case of diesel fuel and less than class C, 2,600 ppm (0,26%) in case of engine oil (British Columbia standards). Initial concentrations of ions of 525 to 378 ppm were reduced to 1 ppm.
Limitations:
(not listed)
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Topics
Technologies, Treatment/Remediation
Additional Topics/Tags/Keywords
Agitation, Multi Phase Mixtures, Slurry |
Organization: | | TECHNOLOGY SCIENTIFIC, LTD. |
Address: | | 152 Ranch Estates Drive, N.W.
| Phone: | Description | Number |
City: | | Calgary | | Primary | (403) 239-1239 |
State/Province/Territory: | | Alberta | 2. | | |
Zip/Postal Code: | | T3G 1K4 | 3. | | |
Country: | | Canada | 4. | Fax: | (403) 239-1239 |
Branch Locations: | |
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