DMT Clear Gas Solutions is the fastest growing biogas technology company in the world, specializing in delivering world-class solutions to companies building a clean, sustainable future. With over 30 years of experience in the field of biogas upgrading and desulfurization, our solutions, paired with unmatched customer service, are the best the market has to offer.
While the technologies we develop and implement solve critical environmental issues, our solutions also provide you a profitable return on investment (ROI). We offer a suite of cost effective solutions, achieved through our team of scientists, engineers and highly motivated employees.
Our reputation precedes us. We are a global industry leader, as well as a trusted, reliable partner, with offices strategically located in the United States, Canada, Europe and Asia. We are positioned to help you anytime, anywhere.

We value your waste.

We make technology to create a clear and prosperous future




Big Five For Live

Our employees are
our greatest capital

DMT operates on the successful ‘The Big Five for Life’ principle.

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Our Challenge

To Create a Clear and Prosperous Future

We contribute to a sustainable future without making concessions to prosperity. We develop advanced technology that benefits our planet and its people. Our innovative designs, plants and service distinguish themselves in terms of quality and return on investment. Cooperation and exchange of knowledge with our partners are key elements. Both are achieved thanks to our greatest capital: our team of enthusiastic people who continuously strive to improve themselves.

DMT Let's be clear
  • "I am looking forward to the fact that it will help provide many households with energy and heat."

    - HRH Prince Charles of England at the official opening of Poundbury

  • "It is quite easy to operate the DMT biogas upgrading system: it's plug and play and it runs by itself."

    - Jan Reistad, Jevnaker, Norway

  • "OUR FOUR ‘GREENER FOR LIFE’ PLANTS IN THE UK WILL DELIVER 16 MILLION NM3 GAS, ENOUGH FOR 8,500 HOUSEHOLDS."

    - Erwin Dirkse

  • "THIS IS THE LARGEST COMMERCIAL BIOGAS UPGRADING SYSTEM IN ENGLAND AND DMT STANDS OUT"

    - Stuart Bennet, UK

  • "Good team effort from your guys at Leeming"

    - Declan McLaughlin (CNG)

  • "BIOGAS UPGRADING PRODUCES A GREEN GAS THAT CAN BE INJECTED INTO THE GRID."

    - Aurelie Chevalier, DMT France

Recent Projects

  • Calgren, California / USA

    2018, Sulfurex®BR
    Flow: 2,500 SCFM | HsS: 3,000 ppm to < 100 ppm
    Biogas: Dairy Manure | Application: Pipeline Injection

  • Fair Oaks, Indiana / USA

    2018, Sulfurex®BR & Carborex®MS 1500
    Flow: 1,500 SCFM | H2S: 3,000 ppm to < 100 ppm
    Biogas: Dairy Manure | Application: Pipeline Injection

  • Ashland, Kentucky / USA

    2018, Sulfurex®BR & Carborex®MS 4000
    Flow: 4,000 SCFM | H2S: 2000 ppm to < 100 ppm
    Biogas: Landfill | Application: Pipeline Injection

  • Honolulu, Hawaii / USA

    2018, Carborex®MS 350
    Flow: 350 SCFM
    Biogas: Waste Water Treatment Plant (WWTP)
    Application: Pipeline Injection



Safety & Service

For our projects, general safety and safeguarding processes are of paramount importance. During the design phase of a project, DMT carries out a risk assessment (HAZOP) and implements the results in the final design.
 Service is crucial and we provide it in accordance with our ISO 9001 certification. We are increasingly requested to provide integrated solutions, for example to combine biogas upgrading with waste water treatment.

Offering 24/7 support, our service concentrates on global technical support through secure internet connections for the installations we deliver. Our clients enter into tailor- made service contracts. In addition to service, a distinctive feature in the DMT quality chain is the co-operation with suppliers and partners. In the interest of our clients, we monitor the flawless and high-quality implementation of the projects agreed on and the service required.


DMT was founded in 1987 by Rob Dirkse

Trained as a chemist, Rob Dirkse worked in various technical fields. He was frequently confronted with matters such as odour abatement and other environmental problems. Due to new legislation at the end of the 80’s, a large environmental clean-up began. The demand for ground water purification enabled DMT to excel. The bright solutions soon gained a reputation in markets such as China, South-America and Europe. In 2001 founder Rob Dirkse retired and he was succeeded by his son Erwin Dirkse. Today DMT Environmental Technolgy employs around 50 employees, has 20 international sales managers, maintains extensive relationships with knowledge institutes, and provides 24/7 productions and services worldwide.

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