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Customizability Ultra Pure Water Purification Polishing - Mixed Bed System
1 . Descriptions:
Pure water mixed bed system is one of the component in wastewater treatment system and pure water treatment system, mainly through the ion exchange resin to remove the ion impurities in the water and produce high purity water. Pure water mixed-bed system mainly consists of cation exchange resin and anion exchange resin, which are mixed together to form a mixed bed. When water passes through the mixed bed, the cations (such as calcium, magnesium, sodium) in the water are adsorbed by the cation exchange resin, and the anions (such as chlorine, sulfate, carbonate) are adsorbed by the anion exchange resin, so that all the ionic impurities in the water are removed, and high purity water is produced.
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) | |||||||||||
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) | ||||||||||
pipelines | • polyvinyl chloride (PVC) • polypropylene (PP) • polyvinylidene fluoride (PVDF) • stainless steel (e.g. 1.4404, 1.4571) | |||||||||||
valves | • polyvinyl chloride (PVC) • polypropylene (PP) • polyvinylidene fluoride (PVDF) • stainless steel (e.g. 1.4408) | |||||||||||
gaskets | • ehtylene propylene diene monomer rubber (EPDM) • fluoroelastomer (FKM) • polytetrafluoroethylene (PTFE) | |||||||||||
control options | process monitoring | • volume counter (standard) • differential pressure (standard) • resistivity (standard) • sodium (option) • silicic acid (option) • total organic carbon (TOC) (option) | ||||||||||
※parameter and detail are customizable to clients' demands. |
3 . Specificities:
1. High purity water: Mixed-bed system can remove all cations and anions in water, and the conductivity of the produced water is very low, usually up to 0.1 μS/cm or less, close to the theoretical pure water.
2. Simple and efficient: relatively simple operation, only need to regularly monitor the water quality and resin regeneration, system operation is stable and reliable.
3. Compact design: The system is compact, with a small footprint, suitable for a variety of occasions.
4. Automatic control:Modern mixed-bed systems are usually equipped with an automated control system that monitors water quality and operating conditions in real time and automatically performs regeneration and switching operations.
4 . Appliance:
1. Electronics and semiconductor industry: Used to produce ultrapure water to meet the needs of wafer fabrication and electronic component cleaning.
2. Pharmaceutical industry: used for the preparation of water for injection, purified water, etc., to meet the requirements of Good Manufacturing Practice (GMP).
3. Laboratory: Provide high purity reagent water for the laboratory to meet the requirements of various precision experiments.
4. Chemical industry: used to prepare high-purity chemical solutions and process water, improve product quality and production efficiency.
5. Power plant: used in boiler make-up water and cooling water system, preventing scale and corrosion, prolonging equipment life.