E4Water Niels Groot, Dow & Peter Cauwenberg, VITO
Economically and Ecologically Efficient Water Management in the European Chemical Industry Vision: A new paradigm for water management in the European chemical industry 19 partners from European Chemical Industry, and affiliated partners Coordinator: DECHEMA Project costs: 19 million May 2012 - April 2016 Six case studies led by chemical industry partners (www.e4water.eu) 5 1 3 2 6 4
The E4Water Vision 3
Approach Six case studies at chemical sites across Europe Technology development at Research Institutes supporting pilots for demonstration Modeling and Life Cycle Assessment Policy compliance analysis Exploitability
Demosite 1 : Dow, Terneuzen Mild desalination of various brackish raw water streams Niels Groot, Dow Benelux BV
Dow 2025 Sustainability Goals By 2025, Dow will reduce its freshwater intake intensity at key water stressed sites and its waste intensity footprint by 20 % 6 Learn more @ www.dow.com
Dow Terneuzen Quick Facts Second biggest Dow site globally 440 hectares 1,700 employees + 600 contractors 17 Plants incl. 3 Ethylene crackers 800+ different chemicals and plastics 85% of products exported Located in a Water Stressed Delta Fresh Water Annual Use is 22 Million M³ Zeeuws-Vlaanderen 1-2 Million M 3 water locally sourced Most water sourced remotely: pipeline ~120km Surface & Ground water mildly brackish
Dow strives to become independent of remote supply Annual fresh water demand of >20 million m³ Biesbosch Surface Water Dow wastewater Dow Terneuzen Fresh water supply 120 km Dow - Bioxplant Terneuzen - WWTP Replace source by: process water rainwater wastewater Biesbosch water Municipal wastewater Intern reuse (condensate) Self sufficing fresh water region Reduce water footprint
Water Balance Zeeuws-Vlaanderen Inventarized water demand and supply : Rainwater run-off (winter and summer mean) k Meetpunten Water in (10 6 m3 jaar) Water uit (10 6 m3 jaar) Hoofdwaterlopen Rain water run-off from Flanders 9
Regional Robust Water system Key attributes Surplus of 100 million m³ of brackish water is discharged annually Save scarce potable water sources by regional reuse Nature, landscape and recreation will benefit. (treated) waste water, diffuse discharges, rain water Water NEXUS Treatment wetlands E4Water Influent buffer Effluent buffer Agricultural usage Mild desalination Industrial reuse
E4Water Mild Desalination Demo at Dow/Evides premises Key characteristics: - 40-100 m³/day - Handle varying raw water streams - Produce water for reuse (< 1 ms/cm) - Identify robust technology - Max production costs 0.4 /m³ - Leverage to other users Treated waste water Collected rain water ELSTA Cooling tower BD
Demo Facility at Evides/Dow 15-6-2015 12
Opening by MEP Lambert van Nistelrooij Flocculator & Lamella Separator Nanofiltration unit
Pilot RESULTS and CONCLUSIONS
Winning Concept and overall conclusions Most robust treatment train for mild desalination: mix of Spuikom/Biox/WRWL pretreatment EDR product Highlights and innovations Ultra Filtration: Very reliable application for new mix of raw water streams (TRL 8) Combination of suitable pretreatment and Electro Dialysis Reversal in Mild desalination on a mix of surface water and industrial streams to produce industrial quality water (TRL 7) Combination of coagulation and UF as pre-treatment for Nanofiltration on CTBD and industrial wastewater was not sufficient Membrane Distillation is a promising technology, not economically feasible yet (TRL 5)
Connecting Chemistry & Water with Passion Water 15-6-2015 16 Each drop counts!
Demosite 2 : INOVYN, Antwerpen Reducing drinking water dependancy by regional symbiose Peter Cauwenberg, VITO
Water Management&Technology team at VITO 44 specialists Sustainable water management We guide industry and communities to sustainable water use and to protect water supply and ecosystems Working for industry, agriculture, governments and cities e Setting up demonstrations & living labs, implementing sustainable solutions in a local and international context We support decision makers and entrepreneurs by holistic water management tools We innovate technology and create integrated water concepts for the future
Inovyn, Antwerpen 395 kt Cl 2 /y capacity 123 employees 79 contractors Production of: Chlorine: pipelines Caustic soda pipelines schips Hydrogen pipelines trailers State-of-the-art Membrane electrolysis
Ambition Objective1: Saving drinking water Objective 2 : resource recovery
Project team EU regulation LCA study Water- Technology Valorisation brines Watermangement Membrane technology Valorisation brines Symbiotic water reuse in the chemical industry Communication dissimination & exploitation
Starting point Tap water 822950 m³ 495420 m³ 62701 m³ 835721 m³ 12771 m³ 281378 m³ 4928 m³ Rainwater 53048 m³ Demineralized water 460474 m³ 83949 m³ 384346 m³ Rainwater : 3921 m 3 23126 m³ Discharge Industrial waste water 959583 m³ Chemicals Steam 163686 m³ Sources? Surface water 23183 m³ 563101 m³ 14354 m³ Tap water user Sand filter 2880 m³ - Waste water from external company - Cooling 189136 m³ tower blowdown Rainwater - Rain water - Phreatic water - Brackish surface water production 8325m³ Consumers? Solvic sanitary 6029m³ - Process water - Sanitary water 211264 m³ - Drinking water - Water for steam productie 23434 m³ - Make-up Cooling towers 99472 m³ 282970 m³ Discharge non - Industrial waste water 146004 m³ Rainwater 132167 m³
Definition of options
Pilot phase : pilot 1 Conductivity: 2000 µs/cm > 10 µs/cm ph NTU Nordic Disc filter QT QT Feed waste Water company x Drinkwater NTU Feed phreatic water QT PAC Effluent Disc filter Overflow Disc filter Filter bag UF P HCl AS EGV QT UF permeaat tank 18m3 Catridge filter F P RO EGV EGV QT QT PT Permeaat 22,5 m3/h max. 17,25 m3/h min. Overflow 40 m3/h CIP F ph 30 m3/h max. QT 23 m3/h min. F P Proceswater tank 20m3 Waste watertank 10m3 150 m3/h Bypass company X 90 m3/h 40 m3/h 22,5 m3/h N333 UF + Double pass RO
Pilot phase : pilot 2 Conductivity: 15000 µs/cm > 5 µs/cm
Pilot phase : pilot 3 NaCl conc: 8% ~ 14% Company X
Results Production of high quality demin water conform production specification ( < 5 µs/cm and 6,5 < ph < 8,5 ) Recycling salty water streams coming from an external company in the brine loop of INOVYN Manufacturing Belgium NV. Symbiotic working together with neighbouring companies. -60% -10% -30%