Engineering and Project Management Experts in Waste Treatment, Waste Water Treatment and Renewable Power

OIS works with the Resource Management Industry to help our clients find engineering and operational solutions to problems that impact on the bottom line or health and safety and environmental compliance.

We have a unique blend of skills and experience in problem solving, business analytics, engineering, project management and construction quality assurance to help clients working in the following sectors to reduce costs, increase revenue and improve compliance:

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  • Waste Treatment, including anaerobic digestion, green waste composting, RDF, landfill and materials recovery
  • Waste Water Treatment, including industrial waste water, landfill leachate and contaminated surface water
  • Renewable Power, including wind, solar, energy crops and anaerobic digestion
  • Contaminated Land remediation

Case Studies

We have extensive experience in investigating concerns about environmental non-compliance of waste management, waste treatment, waste discharge and leachate treatment plant operation. Our team of experts have worked on the following issues:

  • Leachate Treatment Plant gas emission concerns
  • Leachate Treatment Plant ammonia level concerns
  • Overflow and backflow of waste systems
  • Designing compliant water and leachate treatment plants
  • Investigating, Rectifying and Monitoring landfill, contaminated land, waste water, AD and other renewable power systems

Review our latest Case Studies and get in touch if you need assistance.

Energy Crops

Energy Crops

OIS Ltd, worked in partnership with the University of Strathclyde to undertake a feasibility study into the growth of Reed Canary Grass on restored sections of a landfill site to determine its potential as a cost effective feedstock for the ADS Plant.

Solution >>
Landfill Gas Emission Concern

Landfill Gas Emission Concern

Investigations into odour emissions and concern about a breach in a PPC Permit identified that concrete ring chamber lids were perished through normal wear and tear and the types of pump in use were difficult to maintain.

Solution >>
Leachate Treatment Plant

Leachate Treatment Plant

The biological treatment of ammonia by nitrifying bacteria was limited by the surface area available for microbial growth. Nitrification was further inhibited during periods of cold weather and a hydraulically incorrect drainage system.

Solution >>
Surface Water Ammonia Levels

Surface Water Ammonia Levels

A Bio Filter recirculation tank was in connectivity to a surface water French drain. OIS carried out a number of tests and found the recirculation tank was leaking and that the effluent contained high levels of ammonia.

Solution >>

What Our Clients Say

Balfour Beatty: (Iain Paxton, Framework Commercial Manager)

"(Rob Green - MD of OIS) has a proven ability to identify complex technical issues and provide solutions."

Balfour Beatty: (Iain Paxton, Framework Commercial Manager)

Buchley Eco Centre: (G A Golden, Director)

"…..able to identify solutions to both technical and funding issues"

Buchley Eco Centre: (G A Golden, Director)

Resource Efficient Solutions: (Chris Ewing, former Chief Operating Officer)

"OIS were instrumental in identifying the causes of and helping us to resolve major waste water treatment problems at our landfills and AD Plant. Their expertise ensured that we remained in compliance with our environmental permits and reduced operational costs."

Resource Efficient Solutions: (Chris Ewing, former Chief Operating Officer)

Scottish Water: (Alan Ferguson, Project Manager, Scottish Water Solutions)

"….flexible and supportive of working in a partnering environment to deliver best value."

Scottish Water: (Alan Ferguson, Project Manager, Scottish Water Solutions)

University of Strathclyde: (Richard Lord, Director of Knowledge Exchange).

"….an adept negotiator and an excellent project manager who is able to communicate well at a range of technical levels with ease"

University of Strathclyde: (Richard Lord, Director of Knowledge Exchange).