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Mixed bed resins or mixed bed ion exchange resins are mainly used in the water purification industry for polishing process water to achieve demineralized water quality (such as after a reverse osmosis system). Mixed bed as the name states consists of strong acid cation exchange and strong base anion exchange resin.Mixed Beds are ion exchangers that have both Cation and Anion resins, mixed in a single vessel.
The resin bed is in the both H-OH form. These units are normally designed so that they can be automatically operated, with all the necessary internals, instruments, components and controls.Mixed bed resin is a mix of both cation and anion resin.
The cation resin will attract positively charged ions, such as calcium, sodium, magnesium, iron, manganese and potassium. The anion resin will remove negatively charged ions, such as sulfates, chlorides, carbonates, bicarbonates, nitrates and silica.
The last traces of TDS and silica can be removed on a resin bed where highly regenerated strong acid cation and strong base anion resins are mixed. Mixed bed units deliver an excellent treated water quality, but are complicated to regenerate, as the resins must first be separated by back washing before regeneration.
The Global mixed bed ion exchange resin market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Dow launches the next generation of ion exchange resins.The Dowex Marathon ion exchange resins, in combination with optimized system design, can offer up to 10% greater productivity from raw water. It combines the capabilities of Dow’s Marathon and Amberjet technologies.
Its enhanced capacity and ideal balance of properties allow operators to experience maximum usable capacity of the resin with minimal use of chemicals and rinse water.
The Dowex Marathon family of products includes a comprehensive suite of strong and weak acid cation exchange resins, and strong and weak base anion exchange resins for use in both packed bed and layered bed systems. Different combinations will result in various levels of efficiency. The line-up allows operators to use the best combination of resins with their vessel type to achieve extremely low unit cost of demineralized water, high regenerability, and reduced waste volume.
