Slick - Contained Spills - Separator System
The fuel depot in question had two sets of interceptors whereby the petroleum hydrocarbons contaminants from interceptor one were being fed into interceptor 2. Interceptor 2 had three chambers. Chamber 1 was the entry and debris collection chamber,; chamber 2 was the oil catchment and collection chamber and chamber 3 being the clean water exit chamber. On approaching the unit a very strong odour of spilled fuel was evident. All three chambers in the unit contained varying levels of oil. As the interceptors captured the runoff oil spills from throughout the depot complex, the likely oil contaminants were mostly identified as a combination of diesel, kerosene heating oil and vehicle hydraulic oil spills. Particular attention was given to chambers 2 and 3. Chamber 2 had a high level of thick oil gathered within. Chamber 3, the clean water exit chamber actually contained a significant level of contamination.
Samples were taken from Chamber 2 and sent by courier to BioSearch Limited, an independent analytical laboratory. Total Petroleum Hydrocarbons (µg/L) was found to be 29,900,000 at this stage.
A 3 Metre Bio-Boom was inserted into Chamber 2 and attached to the grid cover allowing ease of access.
250 grams of PRP Powder was added to the surface area of Chamber 2 and 100 grams of PRP was added to Chamber 3, the water exit chamber.
Applying the PRP Powder acted as a catalyst, starting the remediation process which the Bio-Boom would take over, eradicating the oil now present in the chamber and that which would enter the unit during the course of this trial.
Three months later the unit was revisited. The first obvious difference on approaching the unit was the lack of any odour. It had been fairly overwhelming in August, now in October there was none.
As the interceptor was a working unit and oil would have been entering the unit over the three month test period, it signified that both the old and new oil entering the unit had been successfully treated.
On examining Chamber 2, clear water could be seen within the same chamber that had originally being filled with stagnant oil. In addition Chamber 3 now only contained clear water also.
A sample of the water within Chamber 2 was taken and sent for analysis to BioSearch Limited, an independent analytical laboratory. Total Petroleum Hydrocarbons present in the chamber read as 88.5 (µg/L).
Using one standard 3 metre Bio-Boom and a total of 350 grams of PRP Powder, the Total Petroleum Hydrocarbon (TPH) level was brought down from a level of 29,900,000 (µg/L) to just 88.5 (µg/L) in three months. A reduction of 99.9%