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Waste 2 Value
Water reuse Water treatment Heemskerk
To prevent scarcity of water resources Two parallel treatment trains
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Increasingly we are confronted with scarcity of water resources. wastewater treatment plant is treated to ultra pure water, which is Water treatment plant Heemskerk, a treatment facility of PWN, the - removal of organic micropollutants
Population growth and climate change are expected to further subsequently applied by Shell for steam production (used for oil water supply company of North Holland, consists of two parallel - extensive softening, to the extent that the treated water is blen-
increase water resources constraints. In this perspective reuse of exploitation). The plant involves subsequent treatment by submer- treatment trains: treatment by Ultra Filtration (UF) followed by Re- ded with dune infiltrated water, in order to achieve optimum
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(waste)water will prove to be a growing industry. ged ultra filtration, double pass Biological Activated Carbon filtra- versed Osmosis (RO), producing 18 million m per year and treat- total hardness 110
tion, double pass Reverse Osmosis and polishing by Electro ment by UV/H O followed by GAC (Granular Activated Carbon - removal of sodium to below the Dutch guidelines.
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Witteveen+Bos has a broad portfolio of expertise in water reuse De-ionization. This treatment strategy constitutes a low chemical Filtration), producing up to 50 milion m per year.
projects. Our hydrologists and environmentalists participate in process scheme, favouring sustainability and facilitating concen- Both the disinfection from viruses and cysts as well as the ab-
water resources assessments. Our process technologists assist trate disposal. Witteveen+Bos has been responsible for enginee- Both treatment trains are fed by pretreated surface water from the sence of by-products would be very difficult to realise with con-
clients in optimizing present practice, as well as in assessing and ring and construction management. river Rhine and Lake IJssel. The membrane treated water is blen- ventional techniques.
pilot-testing new and alternative (reuse) technologies. Our engi- ded directly into final drinking water, whereas the UV/H O -GAC
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neers and project managers have ample experience in design, Wastewater reclamation treated water is infiltrated into the dune areas for aquifer recharge. UV/H O -GAC treatment train
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engineering and construction management of large (reuse) water Water company IWVA in Belgium is one of the first companies PWN includes a barrier to organic micropollutants in its overall
production installations. in Europe to apply wastewater reclamation. Effluent of Gulpen Membrane treatment train treatment strategy. The combination of UV irradiation and hydro-
WWTP is post-treated by Ultra Filtration and Reverse Osmosis. The UF/RO treatment was the first large dual membrane facility in gen peroxide dosing constitutes a robust technology to reduce
UPW plant The reclaimed water is infiltrated for groundwater recharge by the world and still is one of the largest. The treatment train has the any micro organic compound (pesticides, industrial pollutants,
In Emmen (the Netherlands) Nieuwater has constructed a 10 MLD natural ponds in the dune environment. We assisted IWVA in fea- following characteristics: pharmaceutical trace compounds). The installation treats up to
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wastewater reclamation facility.The efflucent from a municipal sibility study, technology selection and pilot research. - a physical double disinfection barrier, also against viruses and 6,000 m /h in four parallel streams, and includes twenty UV re-
cysts like giardia and cryptosporidium actors and four GAC filter units. The primary role of GAC in this
- no formation of disinfection by-products application, is restricted to the destruction of residual H O prior
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