Colsen offers services in different branches. In all those branches we are active in consultancy, project realisation and research & development.

Read more about Colsen as a partner here.

4 services
Slibgisting Tiel

Sludge to energy

Sewage sludge is produced during the wastewater treatment process, and processing and disposing of said sludge is a major money and energy sink.

Biogasinstallatie BIDOX

Biogas desulphurisation

Untreated biogas can cause serious, or even permanent damage to systems such as boilers, cogeneration systems or biogas upgrading systems, which co


Chicken manure treatment

There’s a range of known complications when it comes to digesting chicken manure, from overly dry manure, grit contamination to excess nitrogen lev

Mestvergisting Navia

Manure treatment

Whether the aim is drainable water, maximum phosphate removal or nitrogen recovery for fertilisers; manure digestion is always the first step.