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Silt

Projects

Health
Safe innovation and the water sector
Application of electrocoagulation to water with low conductivity

The wastewater and drinking water sector in the Netherlands and Europe is committed to reducing its CO2 footprint. This also includes a desire to reduce the use of…

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Sustainability
Sustainable resources
Recovering metals from water, sludge and fly ash

The focus of water treatment is increasingly shifting to the recovery of raw materials, partly stimulated by the quest for a circular economy. In the same way as drinking water companies and…

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Sustainability
Sustainable resources
SCREENCAP

The essence of the innovative concept of Screencap is the recovery of solids from raw wastewater on the basis of particle size rather than density. The partners, Aa and Maas Water Board, CirTec and KWR Water Research…

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Sustainability
Sustainable resources
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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Sustainability
Sustainable energy
Hydrodynamic cavitation for effective sludge disintegration

The fermentation of sludge from WWTPs releases biogas. But it is very difficult to destroy the sludge particles effectively, which means that a considerable amount of energy remains…

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Sustainability
Sustainable resources
Application of drinking water sludge to phosphorus-rich soils to favour nature development

Species rich vegetation generally develops on nutrient poor soils. On former agricultural land, in which phosphorus availability levels are high because of years of fertilisation, the development of…

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Sustainability
Sustainable resources
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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Enabling technologies
Hydrogenomics
Exploring the potential of the qPCR technique in biological wastewater treatment

Within today’s wastewater treatment practice most attention is focused on achieving extensive and stable biological nutrient removal in the activated sludge process, including a stable biological phosphorus removal…

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Biological activity
Biological sulphate reduction in wastewater treatment

The sludge line accounts for about one-quarter of total wastewater treatment costs. Minimising the volume of excess sludge would therefore lead to considerable cost savings. Sulphate-reducing bacteria (SRB)…

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Sustainability
Sustainable resources
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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Sustainability
Sustainable resources
Sustainable airport cities

This TKI project is meant to showcase how different sectors can strengthen each other in the process of increasing the sustainability of their own sector – a win-win concept – through the application of innovative technologies originating…

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Sustainability
Sustainable resources
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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Experts

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

Water Sector

New initiative Alu Circles: converting sludge waste in water plants into a valuable resource

13 December 2018 — Cost reduction and sustainability are already proven in practice for residuals from drinking water production including lime pellets and ferric sludges. Aluminium based sludges are…

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News

Research into metals in the water cycle

05 June 2018 — The focus of water treatment is increasingly shifting to the recovery of raw materials, partly stimulated by the…

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News

VibroCav tool offers prospect of more effective sludge disintegration

04 December 2017 — Sludge processing accounts for one quarter of the operational costs in a wastewater treatment plant. Waterboards have long…

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Blog

Detection, removal and recovery potential of metals from the water cycle

08 May 2017 — The focus of water treatment is increasingly shifting to the recovery of raw materials. Drinking water companies, waterboards…

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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

Sustainability pilot with struvite pellets for lush Schiphol grasslands

08 September 2016 — On 7 September 2016 struvite fertilising pellets were applied to the areas next to Schiphol airport’s runways Schiphol-Rijk…

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Subjects

Sustainability

Sustainable resources

The circular economy is the alternative to the current – essentially linear – economy. While…

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Silt

Application of electrocoagulation to water with low conductivity

Recovering metals from water, sludge and fly ash

SCREENCAP

Improvement potential of residuals from WML drinking water production

Hydrodynamic cavitation for effective sludge disintegration

Application of drinking water sludge to phosphorus-rich soils to favour nature development

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

Exploring the potential of the qPCR technique in biological wastewater treatment

Biological sulphate reduction in wastewater treatment

Removing H2S from biogas using granular iron(hydr)oxide

Sustainable airport cities

Production and application of granular aquafer

New initiative Alu Circles: converting sludge waste in water plants into a valuable resource

Research into metals in the water cycle

VibroCav tool offers prospect of more effective sludge disintegration

Detection, removal and recovery potential of metals from the water cycle

Metals in the water cycle: insight and opportunities

Sustainability pilot with struvite pellets for lush Schiphol grasslands

Sustainable resources