Case Studies hero

Case Studies

Having built over 130 installations worldwide, with capacities ranging from several thousand tons/year up to over 500.000 tons/year, we believe WTT is in the position to cover all requirements adapting flexible solutions to any specific application. Below we give you a selection of facilities we have designed, build and commissioned worldwide during the years.

facilities built worldwide
tons of waste handled yearly

years of experience

years of experience

WTT Completed ProjectsReturn to map

Tratolixo, Portugal

In 2018, we upgraded an existing composting and wetAD facility in Mafra, Portugal. Our continuous focus on optimization led to significantly higher waste throughput capacity. The wetAD facility, located approximately 300 meters away from the composting site, includes three CHP’s (biogas generators) capable of producing engine water at 80-90°C.The heat from this cooling water — which was not previously utilized — was modified to include heat exchangers in the inlet air for the tunnels. Once the software system was updated, the heated water accelerated material climatization in the composting plant, leading to potential increased throughput of 15%.


  1. Substantially less landfill costs
  2. Up to 50% more compost after screening
  3. Sustainable and circular solution with the use of CHP rest heat
  4. Significant positive impact on operational cost savings

Key Equipment

10 heat exchangers, insulated ductwork, electrical system including sensors,operational cost savings motors, pumps and control system.

Return to map

Learn more about our
technologies & references