-Bioremediation of polychlorinated biphenyls (PCBs) and dioxin which contaminate soil and water.
-Facultative aero-bacteria isolated from natural environment
1. Applied Field of Industrial and Applied Businesses
(Applicable Business):
Restoration of environment polluted by waste (especially transformer insulating oil), ocean, river, air and wasted water, sediment and soil that polluted by PCBs (Polychlorinated biphenyls)
2. Present treatment methods and problems
Treated by bury in the ground or thickens PCBs and keep it like radioactive waste plant (Japan), washing or burning.
3. Principal functions and expectable effects.
1) Biodegradation many kinds (100~200 types) of dioxin and PCBs that polluted
soil.Excellent successful instance internationally
2) Expectable efficiency of 90~99%
4. Comparison with other product
It’s been detected from clams, fish and shell-fish, meat, soul and insulating oil etc..
Hudson River’s case of U.S.A, there is no prior instance of Bioremediation by microorganism so, they are planning methods using washing etc.
5. Actual results and applied instance: Registered at Patent details
Tested Item |
Data before Treatment |
Data after Treatment |
Environment Standard |
Remark |
PCBs |
1,000ppm |
ND |
Korea “B” area 12mg/kg |
Industrial lot, road, mixed lot |
Germany. Applicable sensitive level land 1mg/kg |
|
Dioxin |
2,500ng/kg
About 2,500ng/kg |
ND ~ 85ng/kg
(2.3.7.8-TCDD:
not detected) |
Germany. U.S.A: residential section 1,000
Sweden. Residential section 10
Industrial, road, business 250 |
Unit: pg-teq/g
Numbers total of whole concentration of principal dioxin |
1) Sweden and Cyprus soil (SUEZ group)
PCBs has been confirmed by SUEZ-SITA after analysis by Dail Biotech’s research lab. Dioxin is analysis data from Sweden.
Tested Item |
Data before Treatment |
Data after Treatment |
Environment Standard |
Remark |
PCBs |
1,000ppm |
Dissolve insulating oil also. |
Korea “B” area 12 |
Industrial lot, road, mixed lot |
Germany Applicable sensitive level land 1 |
|
2) Transformer insulating oil (low density PCBs insulation oil + Aroclor1242 added) Unit: mg/kg
6. Treatment Method
When it is adhered to soil, spray the product. It is different by density of pollution or condition but, normally it requires about 4 months of before and after treatment period.
Methods for separating PCBs from transformers insulation oil is in developing. PCBs treatments are possible as mentioned above, so as long as process of extracting and separating PCBs from insulating oil is completed, lnsulating oil is reusable by recycling of transformer.