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Project Experience

Effluent, Waste and pollution treatment systems

Working across Europe, the Nordics and the Middle East, OPS are global leaders in the optimisation of commercial scale waste recycling and waste management technologies.

We supply and support an extensive range of cost effective industry specific solutions that deliver rapid ROI, proven reliability and low operating overheads. Listed below is cross section of recent projects.

OPS PROJECT – Complete wet and solid waste recycling solution for Derby based waste management company

          The Client

          The Brief

OPS were engaged to deliver a road sweeping recycling plant. Working in conjunction with 2ZFL, OPS expanded the plant’s capabilities to include both wet and dry material. Now fully operational the 2ZLF plant not only recycles road sweepings but also soil, gully waste and interceptor waste from the highways, MRF fines, glass and MBT fines.

          OPS Solution

OPS delivered a bespoke process, integrating off the shelf products with OPS proprietary technology to give a flexible and cost efective solution for 2ZLF. Tankers tip onto a gravel dewatering bed. The contaminated water passes through the gravel bed into a sump from where the water is treated using the OPS electrocoagulation and DAF water treatment plant. Oil is collected form the DAF whilst any sludge is dewatered.

The solids are picked up from the dewatering bed (including the gravel bed) and passed into the solids washing system. At Derby only 10% of the feedstock is hazardous therefore the OPS scrubbing technology was not inserted into the base wash plant. All final products are washed with water which has been cleaned through the OPS water treatment system.

OPS PROJECT – Road sweeping, Interceptor waste, fines and wastewater processing plant in Norway

          The Client

Founded in 1974, Hias Iks is a waste material and recycling company in Ottestad, Norway. It has 85 full-time employees and generates $31 million in annual revenue.

          The Brief

Hias approached OPS with a source of oily wet waste and asked for a solution so that they could form a business plan around the OPS solution. We were given the overall budget and were instructed to make the plant work.

          OPS Solution

OPS designed and provided a system for the receiving of conventional tipping tankers, pump off tankers and side tipping tankers.

  • 2 off reception pits – one for oily waste one for low oil waste
  • Automatic grab (no operator)
  • Screw feeder
  • Dewatering vibrating deck
  • Sand pump and OPS scrubber
  • OPS thickener with oil recover Decanter centrifuge


Facility commercially viable on only 9000 tonnes per year with an expected payback of 4 years.


Equipment Design Supplied:


  • Dual Receiving Tanks with automatic grab
  • Hopper Feeder
  • Split Deck with Hydrocyclone
  • Thickener with oil removal
  • EC and DAF
  • Centrifuge
  • Oil Decanter
  • Water Storage

We have just gone through your deliverables for engineering. First we will tell you that we are very impressed with what you have delivered. Very professional.

We like all the touches made to the system including the functionality to circulate the water in the pits giving us the opportunity to homogenize the feed. We had not thought of this. These things reassure us and make us confident in your abilities. You clearly have put your mind to work here.

Lead Project Ecologist

Hias | Sandvikavegen 136, 2312 Ottestad Postboks 4065, 2306 Hamar Norway

OPS PROJECT – Water – Biosolor

          The Client

BioSolar Norway

          The Brief

Biosolor run a waste wood gasification plant in Central Norway. The leachate from the waste wood collected in the yard was found to have high levels of Chrome, Copper and Arsenic – remnants of wood preservative.

          OPS Solution

Initially bench top trials suggested a filtration followed by absorption process would be sufficient to remove the necessary levels of contaminants. A system was installed including – back-washable sand filter, cartridge filter and media filters (RM40 and RM40C to remove the contaminants).

The concentration of the contaminants in the influent increased by a factor of 4. OPS then installed a 3 stage separation system:
– pH adjustment
– coagulation
– dissolved air flotation (DAF)

The new system removed over 90% of the contaminant on its own leaving the media system to act as a polishing system.

Equipment Supplied:
– high energy coagulant mixing tank
– low energy polyelectrolyte mixing tank
– emulsion polymer dosing unit
– coagulant dosing unit

Flowrate: 10m3/

OPS PROJECT – Oily Sand – Harouge Oil Company Libya

          The Client

          The Brief

The projects involved a clean up of oily sand lagoons at gathering centre throughout the Harouge oil fields.

          OPS Solution

In between July 2007 and September 2010 OPS worked in partnership with a contractor supplying services to the Harouge Oil Company. OPS supplied 2 full sand cleaning plant to the operation and followed it up with on site plant supervision during processing.

Excavators (20m) and pre-screeners were used to prepare the feedstock.  In the region of 15k to 20k tonnes of highly contaminated sand was treated during this time.

In the Amal region the oil was easily recuperated as long as the temperatures were maintained well above the wax point.

The cleaned sand often had less than 200ppm TPH.

OPS PROJECT – Oily Sand – Ystad – Sweden

          The Client

          The Brief

This was the project that was at the very start of the OPS story. A marine accident in the summer of 2003 caused a disastrous spill of heavy fuel oil to be washed up on one of Sweden’s most pristine white sand beaches at Löderups Strandbad. The Swedish National Rescue Corps immediately determined that all of the contaminated oily sand should be dug up and removed to a safe, bunded site where it could be treated.

          OPS Solution

4000 tonnes of contaminated sand was removed to the nearby site at Ystad on the southern tip of Sweden. An analytical survey revealed that the incoming sand contained between 8% and 16% of Total Petroleum Hydrocarbons (TPH). The clean-up target was set at 400ppm.

An independent Sales Engineer Goran Palmqvist who had a good relationship with the Swedish Governmental department took it upon himself to find a solution to clean the sand.

He found the predecessor to OPS and the rest is history. Goran has just retired after over 15 years of service with the group.

“… and the oil was turned into sand”

Processing plant was mostly in a heated tent to enable continuous processing through the winter.

The plant design has come a long way since this time!

OPS PROJECT – Elnaryd Contaminated Ground Water

Case Study Under Construction

OPS PROJECT – Produced Water Treatment

Case Study Under Construction

OPS PROJECT – British Steel Water Treatment

Case Study Under Construction

OPS PROJECT – Oily Sludge Treatment KOC (Kuwaiti Oil Company)

Case Study Under Construction

OPS PROJECT – Gully Waste Treatment – FM Conway

Case Study Under Construction

OPS PROJECT – Soil Cleaning – Sevia Sweden

Case Study Under Construction

OPS PROJECT – Car Wash Water- Statoil Sweden

Case Study Under Construction

OPS PROJECT – Ragn Sells Landfill Leachate

Case Study Under Construction

Oil Pollution Services Ltd.
Building 52, Wrest Park Enterprise Centre,
Silsoe, Bedfordshire
MK45 4HS


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