The feature of this filter is"continuous operation,no chemical regeneration."It eliminates the safety hazards and environmental pollution associated with acid/base storage,transportation,and handling,significantly reducing operating costs.It can consistently produce ultrapure water with resistivity up to 18.2 MΩ·cm,ensuring reliable water quality.The process is fully enclosed,providing no environment for microbial growth,resulting in very low levels of bacteria and endotoxins in the product water.It offers a high degree of automation,allowing precise control of product water quality by adjusting the current.As a clean production process,it meets the stringent environmental requirements.Its modular design facilitates easy system expansion and maintenance,making it the hallmark final polishing unit in modern ultrapure water systems.
The EDI module is its core component,consisting of alternating concentrate,diluate(product),and electrode chambers.The system requires a highly stable DC rectifier power supply,precision flow meters,online resistivity monitors,and a PLC control system.It has strict feed water quality requirements,typically needing two-pass RO as reliable pretreatment.During operation,part of the current is used for water splitting to generate H⁺and OH⁻for resin regeneration,while another part drives ion migration.The system design must ensure uniform water distribution to prevent scaling.The equipment is compact,but the electrical control components require professional design and environment.
An indispensable terminal polishing unit in ultrapure water preparation systems for microelectronics,semiconductor,and integrated circuit manufacturing.Applied in high-pressure and supercritical boiler feedwater treatment for thermal and nuclear power plants.In the biopharmaceutical industry,used to produce Water for Injection(WFI)compliant with USP and EP standards.Also widely used in high-end laboratories,precision chemical industries,the optoelectronics industry,and any field requiring extremely high-purity deionized water with a requirement for zero chemical contamination risk.
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