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Bio-treatment at a Thetford development
Demonstration of biological spray technique |
| Developer digging out foundations for roadways
came upon oil. Again bio-remediation was the cheapest option
with little site disruption and also allowed other work on the housing
development to continue.
| Original contamination
values |
| Sample point 1 |
TOC: 1034 MG/L |
| Sample point 2 |
TOC: 3488 MG/L |
| Sample point 3 |
TOC: 21 MG/L |
| Sample point 4 |
TOC: <0.1 MG/L |
| Sample point 5 |
TOC: 55 MG/L |
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| Fluctuation in values in the table below are
due to the hydrocarbons being lifted toward the surface by the amount of bacteria
impregnated water put down. |
Sample point |
Date |
12/03/98 |
17/03/98 |
20/03/98 |
25/03/98 |
1 |
119 |
53 |
115 |
70 |
2 |
440 |
165 |
519 |
76 |
3 |
181 |
62 |
123 |
144 |
4 |
<0.1 |
n/a |
n/a |
n/a |
5 |
52 |
170 |
308 |
97 |
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MG/L |
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Content ©1999 S.E.T. (UK) Limited.
Design ©1999 Wilson Leppard. |
