Case Study - Can a skimmer be installed in a waste water sump under a highway
In an area of heavy traffic there is a risk of oil, diesel and fuels from general traffic and accidents getting into the drainage system and polluting run off water. To prevent this pollution, a Vikoma skimmer was installed in a sump, 10m below ground level to collect oil and discharge to a road tanker. With a high oil content (98%), the volume of liquid collected is kept to a minimum, keeping road tanker costs much lower than other solutions where significantly more water is collected by the tanker.
Oil on sump - Lude oils, hydraulic oil and Naphtha.
Sump area classification - Zone 2.
Problem - The drainage sump is located 10m below ground level and there is a large volume of traffic in the area and this leads to a risk of spillage, diesel and oil etc. polluting run off water.
Customer objective 1: The recovered oil must be able to be pumped directly to a road tanker for disposal.
Feedback: Skimmer system designed so that the recovered oil can be discharged directly into a road tanker.
Customer objective 2: The skimmer must have a high recovery capability in case of a major spill.
Feedback: Skimmer capacity of over 9m3/hr.
Customer objective 3: The recovered oil must have a minimal water content.
Feedback: 98% oil with typically 2% water achievable.
Customer objective 4: The skimmer must operate safely and reliably within the confined space of the sump in the presence of hydrocarbon vapours.
Feedback: Skimmer certified to zone 2 for hazardous operating areas.
Customer objective 5: The skimmer must pass through a 600mm x 750mm access hatch to the sump.
Feedback: A modular skimmer was designed capable of being dismantled and put in teh sump and reassembled.
Vikoma installed a T9 floating oil skimmer system located in a sump 10m below ground. The skimmer was powered by a electro-hydraulic powerpack unit. The recovered liquid, with 98% oil content is discharged to a road tanker.
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