In Beijing large EDI means
Beijing Miao Feng Jie Water Technology Co., Ltd. specializing in the design of various types EDI devices. Beijing in large EDI means, experienced, produce water of stable quality, long life, the average life of more than 17 trillion more than 3 years. Users can not save small operating costs.
Beijing Miao Feng Jie Water Technology Co., Ltd. specializing in the design of various types of EDI equipment.
EDI (Electrodeionization) is a way to Ion exchange technology , Membrane technology and ion mobility technology combines pure water manufacturing technology of ion exchange. It cleverly electrodialysis and ion exchange technology, the use of high voltage across the electrodes so that the water charged ions move, and with Ion exchange resin And selectively moving resin film to accelerate the removal of ions, so as to achieve water purification purposes.
In EDI desalination process, the ions in the electric field is cleared by an ion exchange membrane while water molecules to produce hydrogen ions and hydroxide ions in the electric field, these ions on the ion exchange resin continuous regeneration, so that the ion exchange resin to maintain the best condition.
EDI ultra-pure water equipment, ultra-pure water production historical process of the first stage: pre filter -) sun bed -) anion bed -) The second stage mixed bed: pre-filter -) RO -) mixed bed present stage: pre-filter -) reverse osmosis -.) EDI (without acid) In recent decades, the mixed bed ion exchange technology (D) has been used as a standard process for the preparation of ultra-pure water due to its need for periodic regeneration and regeneration process It consumed a large amount of chemicals (acid) and industrial water, and cause some environmental problems, and therefore need to develop non-acid ultrapure water treatment system. Because of the traditional ion exchange has become increasingly unable to meet the modern industry and environmental protection requirements, so the membrane, resin and electrochemical principle of combining EDI technology as a revolution in water treatment technology. regeneration of ion exchange resin used is electricity, but no need to acid, and therefore more satisfied environmental protection requirements of today's world.
EDI device is applied after the reverse osmosis system to replace the traditional mixed-bed ion exchange technology (MB-DI) production of ultra-pure water .EDI stable technology and mixed ion exchange technology has the following advantages:
Quality and stability
Easy to implement automatic control
Regeneration will not stop
Without chemical regeneration
Low operating costs
Small plant area
No sewage discharge
EDI module ion exchange resin filling is sandwiched between the anion and cation exchange membrane formed EDI unit .EDI works as shown in the grid plates separated by a certain number of modules in the EDI EDI unit, formed concentrate and fresh water chamber . and set the yin / yang electrodes at both ends of the cell group. In DC, driven by the flow of fresh water chamber ions pass through anion and cation exchange membrane into the concentrated water chamber is removed in fresh water chamber. And through concentrated water water chamber ions out of the system, become concentrated water. EDI equipment generally reverse osmosis (RO) water as the EDI feed water .RO water resistivity generally 40-2μS / cm (25 ℃) .EDI water resistivity up to 18 MΩ.cm (25 ℃), according to the deionized water usage, EDI ultra-pure water resistivity requirements applicable to the preparation of pure water in 1-18.2MΩ.cm (25 ℃) of.
Beijing Miao Feng Jie Water Technology Co., Ltd.