Key figures
>30 years
Experience at the Central Europe market
> 500
Installations delivered
More than 20 countries
Operation
> 100 specialists
International team
About us
Our mission
At Nijhuis we help our clients reduce waste and wastewater, reuse treated water and process streams, and recover valuable resources from industrial and municipal effluents. Our solutions combine high performance with energy efficiency, delivering systems with low operational costs and maximum reliability.
- Municipal
- Industrial
DAF – High rate concrete i-DAF
- Industrial water
- Drinking water
- Wastewater
The NSI high rate concrete i-DAF, a dissolved air flotation system, removes solids in primary, secondary, and tertiary water treatment within compact spaces.
- 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-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 (...)
- Municipal
- Industrial
Anaerobic – Econvert-Dsulph®
- Resource Recovery
- Industrial water
- Sludge
- Wastewater
The 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 (...)
- 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-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-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 (...)
- Municipal
- Industrial
Aerobic – BIOCTOR-FlooBed®
- Wastewater
- Industrial water
A highly efficient and compact biological treatment process to treat a wide variety of industrial and municipal wastewater streams and ensure environmental compliance.
The patented (...)
- Municipal
- Industrial
DAF – FlooDaf®
- Process water
- Industrial water
- Resource Recovery
- Wastewater
- Sludge
- Drinking water
A high-capacity, compact flotation solution for various large-scale water and wastewater treatment applications enabling raw material recovery, decreased water consumption and (...)
- Municipal
- Industrial
Ammonia stripper – ByoFlex®
- Resource Recovery
- Industrial water
- Sludge
- Wastewater
- Process water
With the revolutionary ByoFlex® system nitrogen is recovered from highly contaminated substrates. The ByoFlex® system is a one-of-a-kind ammonia stripping unit. Through years (...)
Membrane – CeraMac®
- Drinking water
CeraMac® is an innovative and cost-effective ceramic membrane filtration solution, designed to provide high-performance, sustainability, and robustness to water treatment processes. (...)
- Municipal
Flocculation-coagulation – ILCA®
- Drinking water
In-Line Coagulation and Adsorption
ILCA® is a compact in-line coagulation and adsorption process developed by PWNT to simplify and optimise pre-treatment upstream of advanced (...)
Our industries
Food & beverage
- Industrial
Cedrob Wastewater and Biogas Plant
Ujazdówek (near Ciechanów), Poland
- Industrial
Sharp’s Brewery Wastewater Treatment Plant
Rock, Cornwall, United Kingdom
- Industrial
Oril-Leader -one of the biggest biogas plants in Europe
Yelyzavetivka, Ukraine
- Industrial
VINNYTSIA Poultry farm – turning factory wastewater into clean effluent
Ladyzhyn, Ukraine
WWTP for Mondelez CR Biscuit Production
Opava, Czech Republic
