DWP Botlek - Evides

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Introduction Evides Industriewater has been supplying high quality demineralised water from DWP Botlek to a large number of chemical and petrochemical companies in the Botlek-Europoort area since 1 January 2010 and this has secured the supply of demineralised water to the port-industrial complex of Rotterdam for the coming years. With a capacity of 1,400 m 3 per hour, DWP Botlek is the biggest customised plant that Evides Industriewater has realised up to now. After extensive consultation with the industry, and working in close cooperation with Port of Rotterdam, Evides realised this multi-client, demineralised water plant on the Huntsman Holland BV site. Evides has a double ring pipe system available which supplies the water to the Botlek-Europoort area. Evides Industriewater has supplied distilled water to the industry in the port-industrial complex of Rotterdam area since the seventies. This distilled water has now been replaced with high quality demineralised water which is produced using the most up to date technology. The production of gases, energy and water with multi-client plants and supplying them as commodities to a large number of customers is a common strategy in industrial areas. Having a shared infrastructure and a strongly cross-linked base of raw material suppliers - based on the concept of co-siting where industries are closely linked to each other through the production and intake of each others products and commodities - ensures that costs are lowered, the production area required is reduced and that operational stability is increased. Technology and Sources DWP Botlek uses surface water from the Brielse Meer as a source and drinking water from the Berenplaat (Spijkenisse) production location as a back-up. The plant was designed to take in and process both types of water. DWP Botlek’s process design takes into account the consequences of incidental salination of the Brielse Meer due to climate change and possible structural salination resulting from government measures (Kierbesluit Haringvliet: Decision to leave the Haringvliet sluices ajar). DWP Botlek consists of a combination of ion exchange and membrane technology. The use of membrane technology as the main desalination stage makes the system less subject to the salt concentration in the supply water than with ion exchange technology. Process stages Pre-purification: DAFF (a combination of coagulation, dissolved air flotation and sand filtration) is used to remove seasonal algae bloom before the water goes through the main process. Demineralisation: The pre-treated water first passes through a softening stage where the water hardness is lowered in order to reduce scale build-up on the membranes. The main desalination stage is then carried out in the reverse osmosis (RO) plant. The raw demineralised water is then further purified in the mixing bed ion exchange stage (IX) to the required quality of the demineralised water.
Lake Process diagram of DWP Botlek Supply reliability Feed water DWP Botlek’s customers are mainly companies in the chemical and petrochemical industries. Their production processes rely on steam, and consequently demineralised water, to an important extent and this makes having a guaranteed supply of demineralised water essential. With DWP Botlek Evides can guarantee a high level of reliability of supply: • The plant has two independent water sources that meet the required levels of availability. This means that the supply of feed water is secured at all times; • The plant’s design is based on redundantly implemented processing units. Combined with more than 15 years’ practical experience in the operational management of top quality, water treatment plants, this redundancy results in an operation that guarantees continuity; • The plant has a substantial storage capacity of demineralised water in order to secure its contractual supply obligations for a substantial time in the event of electrical or mechanical failures; • DWP Botlek’s distribution pipeline to its customers – which is called the ‘demi-net Rijnmond’ – was double executed. This means that Evides can continue to supply demineralised water during maintenance or if there is a failure. The design of the DWP Botlek has been based on the proven efficiency and reliability of numerous other plants of Evides Industriewater. Over the last fifteen years Evides Industriewater has grown to become the partner that provides customised water solutions to the chemical and petrochemical industries. In all the big industrial areas in the Benelux such as Rotterdam, Terneuzen, Vlissingen, Antwerp and Eemshaven, Evides provides technologists and operators for the operational management of water treatment plants. This is how Evides produces process water, purifies wastewater and processes effluent to make it possible to reuse it as industry water. The operational excellence of its operational management enables Evides to be an exclusive, reliable partner in providing customised water solutions. Its customers can 100% rely on dedicated, 24/7 provision of services from Evides. DAFF Flotation Anthracite Sand Vertical RO Reverse Osmosis (RO) Brine Back-up system Softener (NaCl) Mixed bed polisher Softened Water Reservoir Demi Water Reservoir Construction in record time The construction was completed in an exceptionally short period of time: the start of the piling was at the beginning of 2009 and the plant delivered its first demineralised water in early December of the same year. In addition to good cooperation with the municipal services and Port of Rotterdam, the plant was designed and constructed in a design-construct contract using three strategic partner-contractors. Evides worked together with Dura Vermeer on all the civil works, a construction team was formed with Visser & Smit Hanab and BAM for the infrastructural works such as pipelines and Evides cooperated with Logisticon Water Treatment on the construction of the processing plants. This approach to the project made it possible for Evides to be able to guarantee a stable and reliable supply of high quality demineralised water to its customers before the planned contract date of 1 January 2010. The first phase of the construction of the DWP involved the erection of the demineralisation plant. The second phase, the construction of the pre-treatment plant, was started in June 2010. The pre-treatment plant came into operation after the summer of 2011, thus enabling to switch the water source from drinking water to the water of the nearby Brielse Meer. Drinking water is still available as a back-up. The choice of a sustainable source in combination with the reliability of supply in the design and operational management guarantees a reliable supply of demineralised water to the industry in the Port of Rotterdam. Demin water network
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DWP Botlek - Evides

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