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Residue

Projects

Wiser with Metal

This practical study investigates how much aquafer can be reprocessed into iron powder of a known quality. If pure enough, the iron powder can be used for a range of high-grade applications, including as a carrier material…

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Chances for Concentrate

In this project, we are investigating how the circular processing of concentrated residual streams can contribute to future-resilient and socially responsible freshwater supplies. This involves recovering water and producing raw materials for which there is a market.…

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Arsenic removal

Arsenic is one of the most poisonous substances on earth. Nevertheless, millions of people worldwide are exposed to it via their drinking water. In this project we are researching the possibility of removing arsenic to <1 μg…

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Power-to-Protein: pilot (phase 2)

The supply of sufficient food, energy and water present huge challenges worldwide – among the causes are global population growth and the impact of climate change on crops. There is no obvious universal solution. Rather, what will…

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Improvement potential of residuals from WML drinking water production

The drinking water production process at Limburg Water Distribution Company (WML) results in a variety of residuals: liquid aquafer, lime pellets, back-wash water, (iron) lime sludge and filter…

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Sustainable water cycle and geothermal energy at Lelystad Airport

At the beginning of 2015 the Airport Decree was ratified for Lelystad Airport, providing official authorisation for the airport’s expansion. Since the new work will take place on…

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Multi-Source, Single-Stage, Full-Stream RO

The objective is a tested Multi-Source, Full-Stream RO concept, with minimal pre- and post-treatment (single stage), which uses flexible water sources and produces water of impeccable quality. The concept is researched in…

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Application of granular ferric (hydr)oxide for arsenic and phosphorus removal

The production of drinking water generates iron sludge as a residual. The iron sludge contains ferric (hydr)oxides, which are able to adsorb substances such as arsenic and phosphorus.…

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Power-to-Protein: desk study (phase 1)

The supply of sufficient food, energy and water present huge challenges worldwide. There is no obvious universal solution. Rather, what will be needed are local, situation-oriented tailored solutions, based in part on…

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High-value reuse of lime pellets from drinking water production

About half of the drinking water in the Netherlands is softened in pellet reactors. This technology generates a residual in the form of lime pellets, which consist of…

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Removing H2S from biogas using granular iron(hydr)oxide

Aquafer is a sludge consisting of ferric oxide/ferric hydroxide, which is a residual of drinking water treatment processes. Reststoffenunie (now AquaMinerals) looks after the disposals of the aquafer…

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Production and application of granular aquafer

Every year in the Netherlands about 95,000 tons of aquafer is generated (62,000 tons of liquid aquafer and 33,000 tons of dewatered aquafer). Reststoffenunie (now AquaMinerals) disposes of this water company residual…

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IWA – KWR Collaboratory on Resource Recovery

The quest for a circular economy is becoming an increasingly important underlying principle in government policy. Resource recovery in the water cycle has a contribution to make: the recovery and useful application…

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Experts

Kees Roest PhD BSc
Senior scientific researcher Programme coordinator TKI Water technology
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Kees Roest PhD BSc

Senior scientific researcher Programme coordinator TKI Water technology

Kees Roest has worked at KWR since 2008 and was among the pioneers in KWR's wastewater research. On the Energy and Circular Systems team, he works on sustainable transitions, with…

030-6069531

Kees.Roest@kwrwater.nl

06-53197741

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Tessa van den Brand PhD MSc
Scientific researcher Quality coordinator
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Tessa van den Brand PhD MSc

Scientific researcher Quality coordinator

Tessa van den Brand has worked as a scientific researcher at KWR since 2010 and is now one of the first members of the new Energy and Circular Systems team.…

030-6069629

tessa.van.den.brand@kwrwater.nl

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News

News

Turning Wastewater into a Resource

15 June 2020 — A team of European researchers and engineers initiated the ULTIMATE project to turn wastewater into a resource. This…

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News

Collaboration on resource recovery solutions for circular economy

20 December 2017 — On 15 December, Jaya Ratnam, Ambassador of Singapore, and Henk Snoeken, Deputy Director of International Affairs of the…

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News

UPcycles: a second life for residuals from the water sector

02 November 2017 — At the Amsterdam International Water Week KWR, AquaMinerals and Allied Waters signed an ‘Amsterdam agreement’ on the new…

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Water Sector

‘The future of the water economy is circular’

30 March 2017 — ‘There is nothing in the urban watercycle that is negotiable. Water is a matter of quality and safety…

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News

Metals in the water cycle: insight and opportunities

15 November 2016 — Is it possible to recover (scarce) metals in an economically responsible manner from the watercycle – from drinking…

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Water Sector

Key Takeaways from ARREAU Struvite Recovery & Recycling Learning Alliance Workshop

03 July 2016 — The ARREAU Struvite Recovery & Recycling Learning Alliance workshop took place in Amersfoort on the 16th of June…

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News

‘Boer Bier Water’ wins 2015 ZLTO Initiative Award

11 December 2015 — The farmers and growers in the municipality of Laarbeek, together with brewers Bavaria, have uniquely combined their strengths…

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Article

Reststoffenunie, Waternet and partners win IWA-KWR Award

31 August 2015 — In 2015, chainpartners Reststoffenunie, Waternet, Ardagh Glass and Desso won the prestigious biennial IWA-KWR Award for Best Practice…

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