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OPS Gully Waste Treatment Solutions

OPS Gully Waste Treatment Solutions

OPS have 10 years of experience in gully waste treatment. Whether you are upgrading  an existing plant or commissioning a new facility, OPS can offer a turnkey solution for both wet and dry gully waste treatment.

Gully waste tends to much finer than road sweepings containing less stone ad trash / organics. The materials tend to be dirtier with more fine material holding most of these contaminants.

An effective gully waste treatment plant also needs to consider effective water treatment due to the build-up of oil in the water and carry over onto the sand.

The preferred technology for gully waste recycling is using a simple spilt dewatering deck with oversize dewatered on one side of the deck and sand dewatered on the other side of the fraction.

OPS also can introduce the AEV into the equation which will further clean the sand particles to secure the inert label under the WRAP protocol.

The water is treated using electrocoagulation which rips the oil out which is then floated off using a DAF. A gully waste treatment plant should be hugely water positive so effective treatment will also enable cheap water disposal.

Approximate Compositions:


Component Road Sweepings Gully Waste
Water 20-40% 30-60%
Sand 20-50% 30-60%
Stone 10-25% 0-10%
Organics/Lights 10-50% 0-10%
Fines 5-10% 5% – 25%
Metal 0.5-1.5% <0.5%
Oil <1000ppm <5000ppm


Like the oily sand treatment plant, the OPS Road Sweepings Recycling Plant is made up of our own proprietary technology, 3rd party technology when required and off the shelf items. We have the flexibility to meet the customers exact requirements. We can upgrade a plant or to create a plant from bare earth.


Sold as an aggregate


Sold as a fine aggregate/sand


Dewatered and disposed off for soil amelioration projects


Disposed off to oil recycling facility

Energy Efficiency = Reduced Wear.

Road Sweepings is not a hazardous waste and in some cases, it is barely non-hazardous; therefore to ensure an environmental benefit (rather than just ticking a legislative box) a recycling plant has to be energy efficient. OPS design our plants with the following features:


  • Zero ’90-degree’ elbows on pipes transporting sand and water
  • Zero ’90-degree’ elbows at the outlet of pumps
  • Recirculation pump controlled by flowmeters and a pressure sensor to reduce energy consumption
  • Accurate control of sludge flowrate to ensure smooth and efficient centrifuge operation
  • To strive to be water neutral by capturing, treating and reusing all the water which comes into a site

As engineering systems integrators, we combine cost efficient 'off the shelf' products with our high throughput proprietary processes. Integrated by best in class process control into a single solution individually engineered to site conditions, OPS deliver consistent performance, reliability and optimised life cycle costs.

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


+44 (0) 1525 863 942

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