Cleantech company C-Green Technology, IVL Swedish Environmental Research Institute and municipal-owned water and waste company Roslagsvatten are joining forces to build the world’s first sludge-free wastewater treatment plant.

Handling wet sludge is a problem all over the world. Globally, hundreds of millions of tons of sludge requiring treatment or disposal are produced each year – a problem that is expected to increase as society and industry expand, therefore increasing the need for viable treatment methods.

Since sludge often contains both hazardous substances and harmful microbes, it is difficult to handle in a sustainable way. However, sludge also contains nitrogen, carbon and phosphorous which are valuable and should be recycled.

C-Green has developed a patented solution that makes use of hydrothermal carbonisation (HTC) to convert sludge to bio-coal in just a few hours. The process is called OxyPower HTC. It converts the wastewater sludge to a dry, sterile and biobased coal product, which has many environmental benefits. This produced bio-coal can then be used as biofuel or in the agricultural sector. This leads to less sludge and transportation of the sludge and a decrease in greenhouse gas emissions by about 80 %.

The project will start out as pilot tests, to build a full wastewater treatment plant in Margeretelund in Stockholm.

Read more about C-Green Technology here.

Read more about IVL here.


Related Companies

More Companies
Againity AB

Againity AB

Againity converts waste into electricity with in-house developed ORC system.

Artek Solutions AB

Artek Solutions AB

Artek Solutions helps companies transition to circular business models by developing logistics products, OEM components and waste systems made from 100% recycled plastics. Our mission is to create value by keeping materials in circulation for as long as possible – from production to take-back and recycling.

Askalon AB

Askalon AB

Askalon provides sustainable and secure valves for the industry in Sweden, Finland, Iceland, and Denmark. Working with reliable products that last for many years and can be serviced on sight in the factory.

B&M Systemutveckling AB

B&M Systemutveckling AB

B&M Systemutveckling offers their own complete system for the waste management industry, FetchPlanner.