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Project's context and challenges

Concorp, a well-known Dutch confectionery producer behind brands such as Autodrop, Oldtimers, Fisherman’s Friend, Heksehyl, Vitalp and Skittles, faced rising wastewater discharge costs and expected even higher water board charges in the future. To reduce these costs and improve sustainability, Concorp chose to treat its wastewater anaerobically. In order to avoid high CAPEX investments, the company chose an Econvert Anaerobic Rental solution, with the possibility to purchase the installation after several years.

Key figures

3,1

ton COD/day

1000

m3 biogas/day

Customer benefits

No substantial CAPEX investment necessary

Low maintenance

Able to treat small COD loads

Small footprint

Solution

In order to reduce their discharge costs, Concorp opted to anaerobically treat their wastewater. To avoid high CAPEX investments, a rent-to-buy agreement was made for the Econvert Anaerobic Rental reactor. An 8-year contract was agreed, with the possibility of purchasing the installation after 6, 7 or 8 years. In 2025, after 6 years of successful operation, Concorp decided to purchase the system. The Econvert Anaerobic Rental has significantly reduced Concorp’s discharge cost while also generating biogas, which is being reused in their boiler to save energy costs.

Econvert Anaerobic Rental for Concorp

Scope of supply

  • Supply of all equipment, internals and tanks
  • Installation, commissioning & project management
  • Start-up and training of operators
  • Operational support (Services)
  • Excluding civil works

Applied solutions

  • Econvert Anaerobic Rental
  • Buffer tank/pre-acidification tank
  • Activated carbon filter
  • Biogas dryer

Other solutions

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Anaerobic – Econvert-EGSB®

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Econvert-EGSB® (Expanded Granular Sludge Bed) is the optimal solution after decades of experience, development and optimization. Combining a small footprint with robust internals (...)

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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 (...)

  • Municipal
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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-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, (...)

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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 (...)