Ultra Pure Water Purification System with Customizable Polishing Mixing
Customizability Ultra Pure Water Purification System - Polishing Mixer System
1 . Descriptions:
Mixed Bed Units are an ion exchange method used in Ultra Pure Water Purification Systems where superior water quality is needed. They are typically the last treatment step in the water treatment process train. Typically, these beds are categorized into primary and secondary polishing beds. The primary polishing bed elevates the EDI water purity to a resistivity of over 17 MΩ. The secondary polishing bed further enhances the water resistivity to exceed 18 MΩ. These beds achieve polishing by utilizing resin, which needs replacement once exhausted. The uniformly mixed resin layer, comprising both cation (Yang) and anion (Yin) resins, functions similarly to an array of composite beds, effectively performing ion exchange, ensuring the high-quality standards required in an Ultra Pure Water Purification System.
2 . Product parameters:
| volume flow of RO Ultrapure water | available from approx. 0.5 up to 350 m³/h for each line | |||||||||||
| usually 2x100% or 1x100% | ||||||||||||
| polished water quality | resistivity | ≤ 18.2Ʊ | ||||||||||
| silicic acid | ≤ 10 μg/L SiO2 (standard) | |||||||||||
| sodium | ≤ 5 μg/L Na (standard) | |||||||||||
| differential pressure at nominal flow | usually approx. 1 ... 3.5 bar | |||||||||||
| operating temperature | usually 5 ... 40 °C | |||||||||||
| regeneration agent | usually hydrochloric acid (HCl) and sodium hydroxide (NaOH) | |||||||||||
| regeneration intervals | recommended ≤ 4 weeks (polishing mixed bed) usually 24 ... 240 h (working mixed bed) |
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| total service life of the ion exchange resins | usually approx. half a year ... 1 years | |||||||||||
| material options | pressure vessels | • glass-rintroductionorced plastic (GRP) • carbon steel (e.g. S235JR, P265GH) • stainless steel (e.g. 1.4404, 1.4571) |
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| pipelines | • polyvinyl chloride (PVC) • polypropylene (PP) • polyvinylidene fluoride (PVDF) • stainless steel (e.g. 1.4404, 1.4571) |
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| valves | • polyvinyl chloride (PVC) • polypropylene (PP) • polyvinylidene fluoride (PVDF) • stainless steel (e.g. 1.4408) |
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| gaskets | • ehtylene propylene diene monomer rubber (EPDM) • fluoroelastomer (FKM) • polytetrafluoroethylene (PTFE) |
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| control options | process monitoring | • volume counter (standard) • differential pressure (standard) • resistivity (standard) • sodium (option) • silicic acid (option) • total organic carbon (TOC) (option) |
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| ※parameter and detail are customizable to clients' demands. | ||||||||||||
3 . Specificities:
1.High and Stable Water Quality: The mixed bed maintains superior water quality, with minimal impact from short-term operational changes (e.g., variations in inlet water quality or flow rates).
2.Minimal Impact from Continuous Operation: Continuous operation has negligible effects on water quality, and the system quickly restores optimal water quality after shutdowns.
3.Clear Exchange Endpoint: The endpoint of ion exchange is distinctly apparent, ensuring efficient and effective purification.
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