TKI - KWR

Micronutrients in the resource loop

This research is directed at closing the micronutrient resource loop of six to eight essential micronutrients in the...

Application of electrocoagulation to water with low conductivity

The wastewater and drinking water sector in the Netherlands and Europe is committed to...

Successful fat elimination with no adverse effects on wastewater treatment

11 March 2021 — Households, businesses and horeca in the Netherlands are still flushing too much fat into the sewer system. Even...

Nieuwegein Circular Water

In the TKI project, Nieuwegein Circular Water, a water concept is being developed for...

Urban Photosynthesis; three functions on a single roof

Urban Photosynthesis involves research in the urban environment on an integrated solution, which closes as many water loops...

SARS-CoV-2 (RNA) in municipal wastewater: hazards and opportunities

This project couples the monitoring of SARS-CoV-2 in the underground (sewage water) with above-ground testing, with the aim...

Midas: Multiple Data Sources

Drinking water utilities and Water Authorities increasingly wish to support their decisions concerning the maintenance and rehabilitation of...

Reuse of activated carbon for the removal of organic micropollutants

The removal or organic micropollutants (OMPs) from (waste) water is becoming a matter of more and more importance.

Four water technology projects honoured within PPP call for Agriculture, Water and Food

23 November 2020 — De PPP (Public-Private Partnership) call for Agriculture, Water and Food has resulted in four projects in which TKI...

AIR: autonomous inspection robots for drinking water pipes

Effective asset management results in the optimal performance of the drinking water network. Such management requires a good...

Test network for research on inspection tools and drinking water distribution

The most valuable and at the same time least known part of our drinking water supply system is...

CoRe pilot underway in Roermond: the next generation of wastewater treatment

05 October 2020 — Following successful clean-water tests at the KWR Water Research Institute in Nieuwegein, on 29 September the new CoRe...

Explorations by KWR and the drinking water sector in innovative water technology

Water constitutes one of the economic top sectors designated by the Ministry of Economic Affairs and Climate Policy.

Advanced research on smart handling of water in City Nieuwegein

22 September 2020 — On 17 September, the governance kick-off meeting for TKI Circular Water in the City took place in Nieuwegein.

Natural viruses to monitor the integrity of membrane installations

Urbanisation, industrialisation, climate change and other phenomena are placing pressure on the sources used in the production of...

Circular Rain

With Circular Rain we are investigating an innovative storage, purification and use of rainwater. By buffering and simultaneously...

Smarter sprinkling using subsurface water storage, combined with iron removal

In the Netherlands groundwater is extracted for applications in the agricultural, industrial and drinking water sectors. At the...

Subsurface iron removal with ATES geothermal energy systems

Aquifer thermal energy storage (ATES) is being increasingly employed in the Netherlands and elsewhere as a means of...

Rapid detection of faecal pollution in bathing water

When the weather’s good, the public increasingly looks to water for its bathing and recreation. This can involve...

TKI Innovative slaughterhouse Wastewater Treatment Technology

Slaughterhouse wastewater is a difficult to treat because it contains high concentrations of suspended solids and colloidal compounds,...

DNA Diatom Biosensor

In order to attain and maintain the desired level of ecological quality in European waters, water management authorities...

Organic kitchen waste via the sewer

Within the framework of the circular economy, it is important for municipalities to make the best possible use...

WINDOW fase 1

The WINDOW project focuses on the subsurface storage of heat. The implementation of subsurface heat storage at temperatures...

Jantienne van der Meij and Anne Mathilde Hummelen, joint directors TKI Water Technology

03 February 2020 — Since 1 January 2020, Jantienne van der Meij-Kranendonk (WaterCampus) and Anne Mathilde Hummelen (KWR) have, as a duo,...

Online monitoring Aeromonas in drinking water distribution system without chlorine

Current microbiological analyses to monitor drinking water quality take a relatively long time and continuous monitoring is not...

Preventing and controlling emissions in greenhouse cultivation 2

This project is a re-launch of the earlier ‘Preventing and controlling emissions in greenhouse cultivation’ project. In the...

CALLISTO

Water losses in drinking water distribution systems are a globally recognised problem. Drinking water utilities have a number...

CitySports

The times when space in a city was reserved for a single purpose only are over. Cities have...

Anammox

Anammox, an abbreviation for ANaerobic AMMonium OXidation, is a microbial process of the nitrogen cycle. It takes place...

Quick picture of water quality

Because of the rapidly growing reuse of water in greenhouse horticulture, there is an increasing need to have...

Consortium researches impact of ‘Bubble Barrier’ on microplastics in treated wastewater

06 May 2019 — A research consortium, comprising the water utility PWN, Hollands Noorderkwartier Water Authority (HHNK), The Great Bubble Barrier and...

Preventing the flow of microplastics via effluent into surface water

Microplastics are small (< 5mm), synthetic particles that can have a big impact if they flow into large...

CatchAmed binds pharmaceuticals in the toilet

01 April 2019 — Increasing attention is being paid to methods for the removal of pharmaceuticals from wastewater. In the TKI programme’s...

Reliable and affordable backfilling of boreholes in closed thermal energy systems

Thermal energy is an important technique in the heat transition. The use of these systems can therefore be...

Bulb cultivation sector targets zero farmyard emissions

22 January 2019 — In the Waterproof Flower-Bulb Cultivation project, bulb cultivation stakeholders are working together on the development and testing of...

CoRe Water

The transition to the way we’ll be handling our wastewater in the future is being shaped by several...

Waterproof Flower-Bulb Cultivation

The bulb cultivation sector in the Netherlands is an intensive user of plant protection products and nutrients. As...

Reuse of industrial residual water to meet agricultural water needs

Agricultural yields depend on the amount of moisture in the root zone. But in the summer soil moisture...

Cool heads and dry feet thanks to blue-green roof

01 November 2018 — At the annual National Delta Congress, outgoing Delta Programme Commissioner, Wim Kuijken, shined the spotlight on Smartroof 2.0.

Geertje Pronk PhD

Geertje Pronk is an internationally minded soil scientist and biogeochemist with research experience in the Netherlands, Germany, Australia...

Bernard Voortman earns doctorate on invisible water loss

21 September 2018 — Former KWR researcher Bernard Voortman has earned his doctorate from VU University Amsterdam for his thesis on ‘Evaporation...

‘Power to X’ project brings residential districts that run on sunshine and rain a step closer

24 July 2018 — A residential district can use solar power to meet enough of its residents’ energy, heating and mobility needs.

Call on Indonesian attendees for cooperation

24 July 2018 — Jakarta recently played host to the seminar ‘Legionella risk, regulations & analysis’, which aimed to get its Indonesian...

NL-Fish Population Scan determines species composition of fish populations

14 June 2018 — The presence or absence of fish species provides information about the quality of the water. Within the ‘Monitoring...

Adsorptive and biological removal of plant protection products from jointly collected discharge water in greenhouse horticulture

The ‘Adsorptive and biological removal of plant protection products from jointly collected discharge water in greenhouse horticulture’ project...

Research into metals in the watercycle

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

‘Contaminants of Emerging Concern’ – a partnership in water technology

More and more chemical substances are being produced and used all over the world. At the same time,...

Synchrotron-light elucidating structure of iron & manganese oxides

24 May 2018 — After celebrating the news that our extensive research proposal was accepted, the rewarded 96 hours of sample analysis...

Increased density of geothermal energy systems for greater CO2 reduction

To limit the extent of climate change, the Dutch government has signed agreements to cut back CO2 emissions...

Closing the watercycle in North-Holland

After medicines are used, pharmaceutical residues end up, via the toilet and the wastewater treatment plants (WWTPs), in...

Heat transfer to drinking water mains

The warming of the soil around a drinking water main can make the temperature of the water in...

Better reuse of salt and water from waste flows

18 December 2017 — Converting salty waste flows from ion exchangers regenerate into new products and saving energy at the same time...

Kees Roest speaks at Fosfaatspagaat Symposium

22 November 2017 — On Sunday, 19 November the Fosfaatspagaat Symposium was held in the Metaal Kathedraal in Utrecht. The event was...

TKI Water Technology Executive Renewal

14 November 2017 — Within the Top Sector Alliance for Knowledge and Innovation (TKI) Water Technology programme, businesses, knowledge institutions – including...

Transition to increased storage temperature at Koppert Cress open thermal energy system

Open-loop aquifer thermal energy storage (ATES) is a technique in which groundwater in the subsurface is used for...

Sulphate-reducing bacteria also work in WWTP

17 October 2017 — KWR, Paques and Delfluent Services BV have conducted a pilot test with sulphate-reducing bacteria under winter conditions at...

HerCauWer

In the Netherlands drinking water treatment practically always generates aquafer as a residual. By treating this material with...

Evaluation of completed TKI Water Technology projects

09 October 2017 — What have the TKI Water Technology projects achieved so far? What impression do the participants have about...

Innovative blue-green roof cools the city and prevents flooding

08 September 2017 — On Friday, 8 September, the innovative, blue-green SmartRoof 2.0 was opened at the Marineterrein in Amsterdam. The hot,...

Rapid, online detection of enterococci and of the total microbial activity in water

Current microbial analyses for the purpose of monitoring water quality are very time consuming. A technician is always...

Legionella control in the tropics

Legionella pneumophila, the main cause of legionnaires’ disease, multiply primarily in aqueous environments at temperatures between 30 and...

DNA fingerprinting in surface- and wastewater management

Situations arise in surface- and wastewater management in which it is often important to be able to determine...

Smart sewers

Waterboards, as the managers of wastewater treatment processes, are increasingly confronted with waste discharges of hazardous substances and...

Arsenic removal

Arsenic is one of the most poisonous substances on earth. Nevertheless, millions of people worldwide are exposed to...

Power to X

In the future our energy supply will have to be renewable, but also reliable and affordable. In Nieuwegein...

Ruud, Martin and Jan Jaap @ European Geoscience Union

01 May 2017 — KWR gave one oral presentation, presented several posters and organized a session at the European Geosciences Union in...

Remineralisation of RO permeate

Oasen is working on the full-stream treatment of, among others, river-bank filtrate using RO, which entails the complete...

Preventing and controlling emissions in greenhouse cultivation

Starting in 2018, greenhouse horticulturalists will be required to treat their discharge water containing plant protection products (PPPs)...

Water and Horticulture Top Sectors sign ‘Circular Netherlands’ collaboration agreement

21 March 2017 — Loek Hermans, the standard bearer of the Horticulture & Propagation Materials Top Sector, and Hans Huis in ’t...

Processing technology for horticultural discharge water

The horticultural sector is confronted with the challenge of reducing the emission of plant protection products in its...

The connecting role of water in the circular economy

24 February 2017 — As of 21 March 2017, the TKI Water Technology partners will be present at the ...

Power-to-Protein: pilot (phase 2)

The supply of sufficient food, energy and water present huge challenges worldwide – among the causes are global...

Affinity adsorption

The presence of pharmaceuticals and degradation products in surface water represents a threat to ecological water quality and...

Big Data Epidemiology

The scientific literature reports on – sometimes contradictory – research results on the relationship between the quality of...

Microbial profiling: short-circuit flows around water wells

Leakages from the casings and clay seals of water wells can cause short circuits between the aquifers. This...

Microbial profiling in dune infiltration

DNA sequencing has made enormous strides over the past few years. The technology has advanced to the point...

Heat and Cold from drinking water (HCD)

‘Heat and Cold from Drinking water’, ‘HCD ’ for short, constitutes a unique combination of water and energy:...

Smartroof 2.0

Heat stress is a growing problem in the urban environment. In this TKI project, industry, real-estate managers, and...

Monitoring fish migration through eDNA

To bring the ecological quality of European waters up to standard, water management entities have to implement extensive...

Water and Fire

The risk of the spread of wildfires is closely related to the water management. The flammability of the...

Nature4Life: National knowledge agenda for research into biodiversity, ecology and evolution

06 February 2017 — On 1 February, State Secretary Sander Dekker was handed the first copy of the national ‘Nature4Life Biodiversity Knowledge...

Unique Power-to-Protein pilot begins at Enschede WWTP

17 January 2017 — The TKI Water Technology Power-to-Protein project involves the fixation of ammonium and carbon dioxide in the...

The Urban Waterbuffer

Urban areas are increasingly faced with temporary flooding caused by heavy rainfall, or water shortages due to longer...

Kamp wants to extend successful TKI premium scheme another five years

26 October 2016 — The TKI premiums have led to a much larger than expected private contribution from the business community to...

INTEREST: rules of thumb for costs and returns of sensor networks in drinking water distribution

10 October 2016 — Sensor networks allow us to monitor drinking water more comprehensively and detect contaminants more effectively. However, we need...

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...

Rapid optical detection of enterococci in surface water possible

23 September 2016 — A rapid method for enterococci detection in surface water has been developed which could contribute to more efficient...

Cooling water conditioning in the future

Open recirculating cooling water systems are employed on a large scale in industry for the dissipation of low-value,...

Innovation & Valorisation

KWR initiates and coordinates research and innovation in the water sector. We do this within national and international...

Sustainable watercycle and geothermal energy at Lelystad Airport

At the beginning of 2015 the Airport Decree was ratified for Lelystad Airport, providing official authorisation for the...

Circular water provision in horticulture: Water to the greenhouse – Freshwater provision and well technology

Water supply is of crucial importance for greenhouse horticulture. An adequate supply of fresh (irrigation) water has to...

Circular water provision for horticulture: Water in the greenhouse

Water supply is of crucial importance for greenhouse horticulture. An adequate supply of fresh (irrigation) water has to...

Circular water provision in horticulture: Water from the greenhouse Water treatment and reuse

Water supply is of crucial importance for greenhouse horticulture. An adequate supply of fresh (irrigation) water has to...

Circular water provision for horticulture: Operate

Water supply is of crucial importance for greenhouse horticulture. An adequate supply of fresh (irrigation) water has to...

Smart rehabilitation of water mains

This project concerns the identification of promising, innovative, trenchless rehabilitation and replacement techniques, and the objective assessment of...

ATES/UV: Energetic decontamination

All over the world, the groundwater in many central urban areas is contaminated, mostly as a result of...

A cost-effective system for measuring evapotranspiration

Evapotranspiration is nearly always the main source of moisture loss in water balance studies. Most of the precipitation...

Freshkeeper

The supply of fresh groundwater is limited in coastal areas all over the world, while the demand for...

HDDW Rodenhuis

The research, conducted in partnership with Oasen and Visser & Smit Hanab, aims to establish whether water can...

HDDW Dunea

Over the past few years, intensive collaborations between drinking water companies, KWR Watercycle Research Institute and various market...

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...

Zero liquid discharge for greenhouse horticulture (phase 2)

The objective of this project is the development of a concept to achieve zero liquid discharge (ZLD) in...

Hydrodynamic cavitation for effective sludge disintegration

The fermentation of sludge from WWTPs releases biogas. But it is very difficult to destroy the sludge particles...

Pharmaceuticals from effluent

Wastewater contains increasing amounts of pharmaceutical residues. Since the WWTPs are not designed to remove them from the...

Innovative drinking water treatment

At its new drinking water plant in Andijk, PWN is applying self-developed innovations based on ion exchange (Suspended...

Zero liquid discharge for greenhouse horticulture (phase 1)

The objective of this TKI project is the development of a concept to achieve zero liquid discharge (ZLD)...

Supplementary treatment for the removal of polar organic micropollutants

Earlier research showed that significant concentrations of pharmaceuticals and other organic micropollutants were present in the Limburg watercycle,...

Tim van der Mast

As communications advisor, Tim van der Mast is responsible for KWR’s online communications. KWR’s corporate website but also...

Kees Roest PhD BSc

Kees Roest has worked at KWR since 2008 and was among the pioneers in KWR’s wastewater research. On...

Groundwater for crops

The ‘Groundwater for Crops’ TKI project is the basis of a decision-support system (DSS) that helps agriculturalists and...

Innovative treatment technologies – Application of AiRO technology

In the first instance the focus is on ‘Innovative Desalination Technologies’, in which Dutch innovations and knowledge are...

Eutectic Freeze Crystallisation

The objective of this project is to determine the feasibility of EFC for the treatment of regenerant from...

Urban water management tools

Over the next decades cities will experience a number of megatrends. In order to render the sustainability of...

Rapid optical detection of enterococci

Faecal contamination is the main health threat related to water worldwide. The principal monitoring parameters for the microbial...

DNA Water system Scan & Reference Tool

The identification of aquatic organisms through DNA barcode information has accelerated greatly over the past few years. Worldwide,...

From big water data to smart water grids

Due to far-reaching computerisation, smart metering, the use of (online) sensor systems in drinking water production companies and...

INTEREST – Investment in, and returns from, sensor networks

The current monitoring of our drinking water quality is done on the pure water as it leaves the...

AquaPriori

Studies into the effectiveness of water treatment techniques for priority substances involve high costs and are closely related...

Loop-Closure Cleantech Playground Amsterdam

The Cleantech Playground (CTP) is a testbed for clean, innovative technologies in the heart of the city of...

Identifying eDNA to understand aquatic biodiversity

Preserving biodiversity is high on the (political) agenda worldwide. The theme has been given quite high priority at...

Design guidelines for sewer systems for domestic wastewater

In the urban context there are two key water discharge streams: the dry-weather stream and the stormwater stream.

Soil mechanics & dynamics

Information about the soil is available from a number of sources. This information is important in the estimation...

On-site sensoring & monitoring

Determining nutrient concentrations with electronic finger prints and an algorithm based on an artificial neural network. Technology Within...

Protecting bathing water by detecting blue-green algae using DNA techniques

Every summer in the Netherlands and elsewhere in Europe, bathing is forbidden or advised against in outdoor bathing...

Energy-efficient and sustainable Tergooi hospital

Tergooi is developing a new hospital as part of the redevelopment of the Monnikenberg country estate to the...

Calorics

The temperature of water in the distribution network is influenced by the weather, the surroundings and the soil.

NOMixed

In 2014, PWN designed, built and put into operation a new water treatment process (Andijk III), which makes...

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...

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...

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.

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...

Exploring the potential of the qPCR technique in biological wastewater treatment

Technology Within today’s wastewater treatment practice most attention is focused on achieving extensive and stable biological nutrient removal...

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...

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.

Sustainable airport cities

This TKI project is meant to showcase how different sectors can strengthen each other in the process of...

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...

Effluent reuse – Harnaschpolder

Technology The greenhouse horticultural sector in the Netherlands requires large quantities of high-quality irrigation water at an attractive...

Effluent reuse – TOM Dinteloord

The successful realisation of the greenhouse horticulture area of Nieuw Prinsenland (Dinteloord) requires that the supply of irrigation...

Effluent reuse – MDR in the watercycle

In the ‘Effluent reuse – MDR in de waterketen’ (Effluent reuse – MDR in the watercycle) study the...

IWA – KWR Collaboratory on Resource Recovery

The quest for a circular economy is becoming an increasingly important underlying principle in government policy. Resource recovery...

TKI Water Technology

TKI Water Technology focuses on innovation themes in the areas of resource efficiency, smart water systems and sustainable...

Data-analysis useful complement to physical investigation

05 April 2016 — Within TKI Water Technology’s Smart Water Systems theme, the drinking water company Brabant Water, working with three knowledge...

Monitoring fish populations, migration and water quality through environmental DNA

02 March 2016 — This spring research gets underway into an innovative manner, through ‘fish DNA’ in the water, of monitoring the...

TKI Water Technology and engineering consultancies discuss market potential of innovations

15 January 2016 — How can we make sure that as many of the innovations as possible produced by ...

KWR, Vitens and Haitjema develop new drilling technique

17 December 2015 — Soil drilling company Haitjema, water company Vitens and KWR have together, within TKI Water Technology, developed a drilling...

TKI Water Technology knowledge partners intensify collaboration

28 September 2015 — In 2015, the TKI Water Technology knowledge partners intensified their collaboration. They launched a new, joint website and...

Iron and lime sludge applied to test plots in Bloemkampen nature area

03 September 2015 — Since 27 August 2015, a Natuurmonumenten information board at the Bloemkampen nature area (municipality of Nunspeet) tells visitors...