Alternative Remediation Options
(Non-biological Treatments)
Physical/chemical treatment
Physical/chemical treatment uses the physical properties of the contaminants or the contaminated medium to destroy (i.e., chemically convert), separate or immobilise the contamination.
For example, chemical reduction/oxidation and de-halogenation are destruction technologies. Soil washing, SVE, and solvent extraction are separation techniques, and Solidification/Stabilisation (S/S) is an immobilisation technique.
This page consists of three slide-shows and below is a list of links directly to the full pages I have prepared for you if you are interested in reading more into each treatment technology. Again the pages contain information on the process, applications, advantages, limitations and typical costs of each treatment.
For example, chemical reduction/oxidation and de-halogenation are destruction technologies. Soil washing, SVE, and solvent extraction are separation techniques, and Solidification/Stabilisation (S/S) is an immobilisation technique.
This page consists of three slide-shows and below is a list of links directly to the full pages I have prepared for you if you are interested in reading more into each treatment technology. Again the pages contain information on the process, applications, advantages, limitations and typical costs of each treatment.
Slideshow of the Alternative Solid-Phase Treatments
Slideshow of the Alternative Liquid-Phase Treatments
Slideshow of the Alternative Vapour-Phase Treatments
NOTE: The physical/chemical treatments below are not part of bioremediation and are not required content for the lecture quizzes.
Solid Phase:To remediate contaminated solid-phase:
In situ Physical/Chemical Treatments Include:
Ex situ Physical/Chemical Treatments Include: |
Liquid Phase:To remediate contaminated liquid-phase:
In situ Physical/Chemical Treatments Include:
|
Vapour Phase:
Air emissions/off-gas treatment technologies:
- Bio-filtration is commonly used (in Europe & Japan) to remove VOCs from off-gas streams (Lecture 8 and its further information provided. (Recall: this is a bioremediation process!! not physical/chemical)
- Catalytic (scrubbers) and thermal oxidation are more commonly used in the U.S. industry but only have limited application to site remediation of off-gases. (Chemical/physical treatment)
- Vapour phase carbon adsorption is also a commonly used VOC removal technology for site remediation off-gases, however this technology does not destroy the VOCs - thus requiring additional destruction/disposal. (chemical/physical treatment)
Go to Pages I have prepared for you on:
External Links
For further information regarding these technologies, see FRTR Web Site.