Trevi environmental solutions is a Belgian company providing environmental technology for all disciplines: water, air, soil and energy as well. Our team consists of about 100 employees with different specialties, including environmental consultants, process experts, programmers and installers. Since its foundation in 1992 Trevi has constantly grown. Trevi environmental solutions has 120 mobile plants at its disposal for pilot testing or full scale treatment plant operation. All your environmental problems can be solved with only one partner. A consequent approach with audit, lab or pilot testing, design and realization resulted in a wide range of served companies and sectors.

Company details

Dulle-Grietlaan 17/1 , Gentbrugge , Belgium B-9050 Belgium


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Business Type:
Industry Type:
Environmental Management
Market Focus:
Internationally (various countries)
Year Founded:
$10,000,000 US - $100,000,000 US


In 2001 an unoccupied property at the ex-Arbed site at Gentbrugge was achieved and in 2002 a thorough renovation was started where the premises were transformed into the contempory offices and workshops. End 2004 the offices were inaugurated.

  • In 2004 Trevi sarl, the French establishment at Roncq was founded.
  • In 2005 Trevi obtained the ISO 9001 and ISO 14001 certificates.
  • In 2006 was decided to invest in green energy and the engineering company BiogasTec nv was incorporated.
  • Trevi invested systematically in green power plants (fermentors with CHP) since 2007. Next subsidiaries were founded chronologically: Agrikracht, GSL, Digrom Energy and Leiestroom. All together they represent an energy production capacity of about 8 MW (or the consumption of about 20 000 households).
  • In 2009 Trevi obtained the VCA-certificate for safety management.
  • Trevi was 2 times chosen as a regional Voka-ambassador in November 2010 and June 2011.
  • In 2011 the activities of BETE were incorporated into Trevi.
  • At the end of 2011 electricity supplier Trevion nv was founded: Trevion sells the green energy produced by his subsidiaries directly at the market.
  • IPEC joined the Trevi group in 2013, specialized in specific activated carbon applications.
  • The Trevi group was extended with SJWS (Smet Jet Water Solutions) in 2014. By this cooperation also all individual and small waste water treatment project can be managed.

Currently Trevi, including all subsidiaries, counts 100 employees and has a turnover of about € 25 million at group level. Trevi realised over 200 waste water treatment plants, 150 air purification installations, 70 manure treatment plants and 5 biogas plants with digestate handling. Furthermore Trevi has to the clients disposal a fleet of 120 mobile treatment plants to use for pilot tests, ground water sanitation projects or full scale water or air treatment. The projects were realised in Belgium, France, the Netherlands, Poland, Hungary, Great Britain, Sweden and Ruanda. Trevi already executed over 500 study assignments. Trevi has 3 patents on its name, 2 concerning manure treatment and 1 together with BiogasTec nv regarding biogas production combined with digestate treatment.  

For further information about our activities you can always contact us without obligations using following co-ordinates.

While yesterday it was in the air, today it is present in the water and tomorrow it will be in the soil. What is it? A drop of water, a gas bubble or a grain of sand?
There is no simple answer to this question. Water, air and soil are strongly related. That doesnt make it easy to classify a solution for an environmental problem.

The Trevi strategy is using a wide approach for each environmental problem, involving a team of environmentalists, all experts in their own environmental field. Our first concern is to achieve a maximum reduction at the source, which has been our main objective ever since the beginning in 1992.

Thanks to an enthusiastic team of people with different specialities, Trevi can handle most projects from start to finish with its own experienced staff. Indeed, the diversity of employees is one of the keystones of Trevi: laboratory assistants, environmentalists, technical designers, welders, mechanical engineers, electricians, programmers and project engineers, all working together for a better environment.

Every project, big or small, is continuously increasing our know-how, resulting in a growing competence for the next project. As a result, Trevi offers a wealth of experience in environmental advice and technology in a wide range of environmental fields. All this is illustrated on this website.


To realise the most effective solution for your environmental issues, Trevi uses preferably the next strategy:

Environmental audit and analyses
An environmental audit offers the perfect impulse to proposals concerning resources restraint or preventive measures. Basic principle is the thorough evaluation of the production processes and an inventory of incoming and outgoing streams. By means of the updrawn balances wastestreams and emissions can be reduced at the source. Often this means important savings for your company.


Pilot tests
Trevi has a broad fleet of mobile pilot plants to examine thoroughly the feasibility of a purification concept on an industrial scale. All parameters necessary for the extact dimensioning of the final plant are watched closely under actual circumstances. These pilot plants can also be set in as final installations for smaller contamination loads or volumes.


Design and realisation
Based upon the results of a pilot test a design of a final plant is drawn up. This could be a completely new treatment plant, as well as an optimisation of an existing treatment plant. Every part of the tackling is executed on our own account, since Trevi disposes of a wide experienced staff of process experts, programmers and installers.


Start-up, follow-up and exploitation
After realisation Trevi can coach the start-up and the follow-up. The clients personnel recieves a thorough education and with the guidance of an operating manual framed by Trevi the exploitation of the treatment plant can be under control. Besides also a permanent monitoring and operation is possible by means of a remote controlled steering. Different possibiliteis for the operation can be offered, from a small periodic audit to a complete outsourcing of the exploitation.