Home
Current Projects
Oxidation Processes
PLASMA
UWAP Present
PROJECTS
Pig Farms
Source Point Services
| |
A
Comparison of Oxidation Processes
Organic
contaminants are oxidized under vigorous conditions employing various
combinations of light, heat, pressure, catalysis, and chemicals. The organics
are oxidized predominately to carbon dioxide and water. Oxidation technologies
are effective and some no longer have high capital and operating costs.
|
Photochemical Oxidation:
Ultraviolet light (UV) in combination with hydrogen peroxide, ozone, or
inorganic catalysts results in generation of free radical oxidants that
can degrade various organic chemicals. This process can be effective;
however, energy and capital costs can be high and has problems with
turbidity.
|
|
|
Chemical Oxidation:
Chemical oxidation is similar to photochemical oxidation but uses chemical
reagents solely to generate free radicals. For example, Fenton's reagent
utilizes ferrous iron and hydrogen peroxide to generate free radicals.
This process is relatively inexpensive but can generate a large quantity
of sludge.
|
|
|
Supercritical Oxidation:
This process uses high temperatures and pressures above the critical point
of water to yield a highly oxidative environment that can destroy organic
chemicals. These chemicals are oxidized to carbon dioxide and water. The
process is very efficient and NO LONGER has high energy and capital costs
due to using high power low cost semiconductors to create switch.
Figure 1
supercritical water oxidation Pulsed Plasma process
|
|
