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DOW™ Electrodeionization Modules Model EDI-310

Page 2 of 2 ™® Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow Form No. 795-00045-0414 Module Feed Water Requirements

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Page 1 of 2 Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow Form No. 795-00045-0414 Product Information DOW Electrodeionization Modules Model EDI-310 Features DOW EDI modules are made using a patented spiral wound design containing membrane and ion exchange resins sealed in a high strength fiberglassed reinforced plastic (FRP) pressure vessel. The modules can be used in place of conventional mixed bed ion exchange for polishing of reverse osmosis (RO) permeate eliminating the need to store and handle hazardous chemicals. DOW EDI modules optimize performance, maintain continuous product quality and can produce up to 18 megohm-cm product water for high purity and ultrapure industrial water applications. Once through concentrate flow path eliminates brine injection and recirculation greatly simplifying system designs. Distinct spiral design prevents internal and external leaks common with compression style plate & frame stacks. Easy to clean, non-resin filled concentrate chambers. Lightweight modules require no special lifting equipment allowing for easy access modular designs. Built in sample port for dilute product water sampling. Cost effective-spiral wound DOW EDI modules allow system integrators to build systems that have both lower capital and operating costs when compared to conventional mixed bed ion- exchange. Peformance Specifications Product Water Resistivity 5 M cm 15 M cm Total Exchangeable Anions (TEA) 25 ppm (CaCO3) 8 ppm (CaCO3) Based on standard test solution, actual module performance is based on specific feed water conditions Figure 1 Part Dilute & Product Electrolyte Module Size Model Number Water Connections Connection Length Base Diameter Net Module Weight Size Material Size Material In/mm In/mm kg's lbs EDI-310 10406238 Dn 15 PVC-U Rc1/4 Nylon 43 95 Page 2 of 2 Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow Form No. 795-00045-0414 Module Feed Water Requirements Based on RO Permeate Feed Water Module Operating Conditions Important Information Proper start-up of an EDI system is essential to prepare modules for operating service and to prevent module damage. Before initiating EDI system start-up ensure that all instrument calibration and other system checks are completed and that RO permeate quality meets EDI operational requirements. Ensure break tank (if any) and all lines and manifolds leading to the EDI modules are properly flushed prior to start-up. Single Pass RO pretreatment installations must have a hardness switch/monitor prior to the EDI to avoid invalidating warranty coverage. Please refer to the DOW EDI product manual for more information. Operation Guidelines Gases (hydrogen, oxygen, chlorine) from water electrolysis are produced at the electrodes and carried away in the electrode flush and concentrate bleed. These gases must be vented to avoid buildup. EDI devices are vulnerable to particulate fouling. Plugging of resin interstices increases pressure drop across the module and immediately interferes with the desalination performance. Oxidizers such as chlorine will attack ion exchange membrane and resin beads and will cause irreversible module damage. General Information DOW EDI modules are designed to deionize RO permeate and are subject to specific feed water requirements as listed above. If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void--refer to DOW EDI product warranty sheet for further details. DOW Electrodeionization (EDI) For more information about DOW Electrodeionization, call the Dow Water & Process Solutions business: North America: 1-800-447-4369 Latin America: (+55) 11-5188-9222 Europe: (+32) 3-450-2240 Pacific: +60 3 7958 3392 Japan: +813 5460 2100 China: +86 21 2301 9000 Notice: This product is not intended for use in potable water applications. NOTICE: No freedom from any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer's use and for ensuring that Customer's workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to Dow or the Company mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN EXCEPT FOR ANY SPECIFIC WARRANTY SET FORTH HEREIN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. Parameter SI units US units Hardness meq/l ppm (CaCO3) Dissolved Silica ppm TOC ppm pH, Operating Range - Free Cl2 ppm Fe, Mn ppm Turbidity, NTU ppm Oxidizer, mg/L Not detectable Dilute Water Flow rate to m3/h to 10 gpm Recovery Rate up to 95% Inlet Temperature 10 to 38 C 50 to 100 F Max. Inlet Pressure bar 100 psig Max. Continuous Operating Pressure bar 80 psig Dilute Pressure Drop to bar 22 to 36 psig Concentrate Outlet Pressure to bar less than dilute pressure 7 to 10 psig bar less than dilute pressure Electrolyte Flush 40 to 60 l/h to gpm Maximum Electrical Current 9A Maximum Working Voltage 160V DC

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