For inspection purposes only. Consent of copyright owner required ...
For inspection purposes only. Consent of copyright owner required ...
For inspection purposes only. Consent of copyright owner required ...
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OIL INTERCEPTORS<br />
POLLUTANT REMOVAL / MAINTENANCE MAINTENANCE CONSIDERATIONS<br />
�Triple<br />
oil interceptors have been �Clean<br />
once a month to keep<br />
reported to have relatively poor accumulated oil and grit from escaping.<br />
pollutant removal capability. This has A vacuum pump tanker can be used to<br />
been attributed to poor maintenance pump out the contents <strong>of</strong> each chamber.<br />
and the passage <strong>of</strong> high flows though the<br />
device (Galli, 1992). They have also �Without<br />
regular maintenance, the<br />
been found to be expensive to operate system quickly reaches capacity. Oil and<br />
due to their high maintenance solid pollutants are re-entrained into the<br />
requirements (Ontario Ministry <strong>of</strong> flow, rendering the device ineffective.<br />
Environment & Energy, 1994).<br />
Regular <strong>inspection</strong>s should be made to<br />
assess sediment and oil levels along with<br />
outflow oil concentrations.<br />
Pollutant<br />
Gross Pollutants<br />
Fine Sediment<br />
Medium Sediment<br />
Coarse Sediment<br />
Attached Pollutants<br />
Dissolved Pollutants<br />
Oil & Grease<br />
Floatable Material<br />
Removal<br />
Low to Medium<br />
Low<br />
Low to Medium<br />
Medium<br />
Low<br />
None<br />
Medium to High<br />
Medium to High<br />
TRIPLE CHAMBER OIL INTERCEPTOR<br />
INTERNATIONAL EXPERIENCE<br />
�Oil<br />
interceptors are widely used to<br />
protect receiving waters from pollution<br />
by oil.<br />
�See<br />
Pollutant removal capacity<br />
included for documented experience <strong>of</strong><br />
their performance.<br />
<strong>For</strong> <strong>inspection</strong> <strong>purposes</strong> <strong>only</strong>.<br />
<strong>Consent</strong> <strong>of</strong> <strong>copyright</strong> <strong>owner</strong> <strong>required</strong> for any other use.<br />
S OURCE<br />
CONTROL<br />
ADVANTAGES<br />
�Suitable<br />
for treating stormwater<br />
from areas with significant vehicular<br />
pollution (e.g. car parks).<br />
�Can<br />
also trap litter.<br />
�Can<br />
treat stormwater from areas<br />
storing or handling petroleum<br />
products (e.g. service station and<br />
petroleum depots).<br />
�Can<br />
be retr<strong>of</strong>itted into existing<br />
drainage systems.<br />
�Minimum<br />
visual impact.<br />
LIMITATIONS<br />
�Limited<br />
removal <strong>of</strong> fine sediments or<br />
soluble pollutants.<br />
�Turbulent<br />
conditions may resuspend<br />
particles or entrain floating<br />
oil. (A high flow by-pass can<br />
overcome this problem).<br />
�Trapped<br />
debris is likely to have a<br />
high concentration <strong>of</strong> pollutants,<br />
possibly toxic.<br />
�Requires<br />
regular cleaning to achieve<br />
design objectives.<br />
�Can<br />
pose a potential safety hazard<br />
for maintenance personnel.<br />
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EPA Export 24-08-2012:23:55:53
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