Project's context and challenges
Blue Paper manufactures corrugated medium reels from 100% recovered paperboard. The reels produced are sent to customers to make packaging board. Blue Paper started the ‘Blue Gas’ project to expand their existing wastewater treatment plant. An Econvert-IR® was chosen due to Econvert’s experience and references for this specific application. The produced biogas is used in the site’s biogas engine where green electricity is produced, and the steam boiler where natural gas is replaced.
Key figures
40
ton COD/day
"Since 2020, Econvert has been our trusted partner in anaerobic treatment for VPK group. During the last 5 years, Econvert has successfully implemented anaerobic treatment solutions at our recycled paper production sites Oudegem, Strassbourg, Alizay and Soustre even if it was not always a walk in the park. At all four locations, Econvert’s reactors perform as promised. We recommend Econvert as both a technology provider and reliable partner for anaerobic treatment. "
Customer benefits
Able to deal with recycled paper effluent challenges (calcium and high loads)
Small footprint
Low energy consumption due to internal recirculation
Completely closed gastight system (no odour emissions)
Solution
As an expansion to the wastewater treatment plant at Blue Paper in Strasbourg, Econvert designed, engineered and delivered an Econvert-IR®. All equipment, internals and tanks were supplied by Econvert. The Econvert-IR® is part of Blue Paper’s state of the art wastewater treatment and recycling plant. The biogas produced by the Econvert-IR® is cleaned and used in the biogas engine where green electricity is produced, and the steam boiler where natural gas is replaced.

Scope of supply
– Design and engineering of Econvert-IRC®
– Supply of all equipment, internals and tanks
– Installation, commissioning & project management
– Start-up and training operators
– Operational support (Services)
Applied solutions
– Econvert-IRC®09524
– Biogas dryer
– Biogas blower
Other solutions
- Municipal
- Industrial
Anaerobic – Econvert-IR®
- Wastewater
- Industrial water
The Econvert-IR® (Internal Recirculation) is designed to create the ideal process conditions – even under extreme conditions. Thanks to its unique two-stage settling system, (...)
- Industrial
Anaerobic – Econvert-EGSB®
- Wastewater
Econvert-EGSB® (Expanded Granular Sludge Bed) is the optimal solution after decades of experience, development and optimization. Combining a small footprint with robust internals (...)
- Industrial
Anaerobic – Econvert-UASB®
- Wastewater
- Industrial water
The Econvert-UASB® (Upflow Anaerobic Sludge Blanket) has a proven track record for decades. Its robust and reliable configuration enables the handling of large varieties of wastewater (...)
- Industrial
Anaerobic – Econvert-DGF®
- Resource Recovery
- Industrial water
- Wastewater
The Econvert-DGF® (Dissolved Gas Flotation) is an anaerobic solution developed to treat raw wastewater with high concentrations of total suspended solids (TSS) and fats, oils, (...)
- Industrial
Anaerobic – Econvert Anaerobic Rental
- Wastewater
- Industrial water
- Resource Recovery
We understand that CAPEX is not always readily available to invest in anaerobic wastewater treatment, or that you may want to avoid long-term financial commitments. At Econvert, (...)
- Municipal
- Industrial
Anaerobic – Econvert-Dsulph®
- Resource Recovery
- Industrial water
- Sludge
- Wastewater
Econvert-Dsulph® is a proven, high-efficiency biogas desulfurization solution that combines the chemical absorption of hydrogen sulfide (H2S) in the scrubber with the biological (...)
- Industrial
Anaerobic – Econvert-RTF®
- Wastewater
- Industrial water
The Econvert-RTF® is a regenerative trickling filter which achieves high H₂S removal efficiency, consumes no caustic soda and enables aerobic effluent reuse. The technology (...)
- Industrial
Services: Anaerobic wastewater treatment & biogas
- Wastewater
- Resource Recovery
In the end, it’s not just the equipment that treats your wastewater, it’s the whole process. At Econvert, part of Nijhuis Saur Industries, we offer various anaerobic wastewater (...)