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Regrowth

Projects

Biological activity
Survival and growth of water lice on organic matter in drinking water distribution networks

Earlier research has indicated that a correlation exists between the presence of water lice and the Aeromonas count in drinking water, and that this bacterium probably partly lives…

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Biological activity
Practical guidelines for use of PE as pipe material

Synthetic drinking water pipes can release substances into the water upon which bacteria can grow. The resulting biofilm on the pipe wall can lead to water-quality problems. The…

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Biological activity
Regrowth of bacteria of the coli group in sand filters at the Bergen and Mensink pumping stations

Drinking water quality is controlled, among others, by measuring the presence of bacteria of the coli group. However, when these bacteria, which in themselves are not dangerous, grow…

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Biological activity
Drinking water biological stability in relation to temperature

The law establishes that drinking water temperature must be under 25°C. However, there aren’t any, or hardly any, measures available to actually keep the water temperature below this…

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Enabling technologies
Future-proof networks
Discolouration prediction tool for optimal cleaning policy

The quality of drinking water in the Netherlands is excellent. Nonetheless, this quality can deteriorate between the water production site and the client. One of the key water-quality…

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Biological activity
Value of legal and alternative regrowth parameters

The regrowth of microorganisms during the distribution of drinking water can lead to a number of problematic situations. Water companies therefore monitor drinking water quality very closely. Because of possible risks and…

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Biological activity
Validation and standardisation of the BPP test for drinking water

Since regrowth of microorganisms in the water distribution system is not desirable, the Dutch water companies strive to produce drinking water with a low microbial growth potential. In…

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Biological activity
Modelling regrowth in the distribution network

Regrowth in the distribution network is a complex phenomenon. Measures to manage regrowth in the distribution network have hitherto been based on a trial-and-error approach. We need a model-based description of the…

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Sustainability
Climate change and resilience
Future temperature in the distribution network under the impact of urbanisation and climate change

Water temperature at the pumping station has limited impact on the temperature at the tap, but groundwater temperature does have a strong impact. If ground temperatures increase because…

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Enabling technologies
Innovative water treatment technologies
Innovative drinking water treatment

At its new drinking water plant in Andijk, PWN is applying self-developed innovations based on ion exchange (Suspended Ion Exchange, or SIX®) and ceramic membrane filtration (CeraMac®). Combined with existing UV technologies…

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Enabling technologies
Future-proof networks
Calorics

The temperature of water in the distribution network is influenced by the weather, the surroundings and the soil. Climate change and urbanisation will also in the future possibly lead to excessive warming of the drinking water. Water…

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Experts

Frits van Charante
Scientific researcher
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Frits van Charante

Scientific researcher

Frits van Charante is a scientific researcher in the field of microbiological activity in man-made water systems. Frits did his doctoral research on the analysis and prevention of microbial biofilms…

030-6069585

frits.van.charante@kwrwater.nl

06-21614874

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Paul van der Wielen PhD
Principal scientist
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Paul van der Wielen PhD

Principal scientist

Paul van der Wielen is Principal Scientist in the field of (micro)biological activity in water in man-made water systems, and a member of KWR's Scientific Council. He is also guest…

030-6069642

Paul.van.der.Wielen@kwrwater.nl

06-25241293

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Nikki van Bel PhD
Scientific researcher
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Nikki van Bel PhD

Scientific researcher

Nikki van Bel is a medior scientific researcher in the field of microbiological water quality and health, with over 10 years of experience in microbiology. The aim of her research…

030-6069516

nikki.van.bel@kwrwater.nl

06-31998085

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Subjects

Biological activity

Growth of microorganisms in (drinking) water can present risks to public health and lead to…

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Regrowth

Survival and growth of water lice on organic matter in drinking water distribution networks

Practical guidelines for use of PE as pipe material

Regrowth of bacteria of the coli group in sand filters at the Bergen and Mensink pumping stations

Drinking water biological stability in relation to temperature

Discolouration prediction tool for optimal cleaning policy

Value of legal and alternative regrowth parameters

Validation and standardisation of the BPP test for drinking water

Modelling regrowth in the distribution network

Future temperature in the distribution network under the impact of urbanisation and climate change

Innovative drinking water treatment

Calorics

Biological activity