EDI device is applied in the reverse osmosis system, replacing the traditional mixed ion exchange technology (MB-DI) to produce stable deionized water.EDI technology has the following advantages compared with the mixed ion exchange technology:
①stable water quality; ②easy to realize fully automatic control; ③will not be shut down due to regeneration; ④No need for chemical regeneration; ⑤lower operating costs; ⑥smaller footprint; ⑦no sewage discharge. ⑦No sewage discharge.
EDI technology is a revolutionary significance of water treatment technology, electrodialysis and ion exchange organically combined with the continuous desalination process, is a high-tech green technology, EDI water purification equipment has a continuous water, no regeneration of acid and alkali and unmanned, etc., has been in the preparation of pure water system to gradually replace the mixed-bed as the use of fine treatment equipment.
EDI device is applied in the reverse osmosis system, replacing the ion exchange resin, without acid and alkali regeneration, with stable water quality, low operating costs, easy operation and management, small footprint and so on. Project EDI mixed bed water properties 15 ~ 18MΩ-cm 2 ~ 10MΩ-cm Stability water quality stability water quality by the resin exchange status, regeneration quality of the impact of the operation of the operation of the simple operation, without professional skilled workers regeneration of the operating level of the operator requires high environmental protection without the need for acid and alkali, without any chemical contamination need to be regenerated by the need to solve the problem of acid and alkali storage and discharge of the continuous operation of the regeneration without stopping, while running while regeneration need to be regenerated by the need to be regenerated without stopping The regeneration requires no downtime during regeneration Running cost Low High Initial investment High Low ①Pre-treatment
1, the traditional process consists of mechanical filters, activated carbon filters, and security filters.
2. The latest process consists of mechanical filter, security filter and ultrafiltration.
② reverse osmosis system
1, composed of high-pressure pumps and reverse osmosis
2, can be divided into a reverse osmosis and reverse osmosis
③ fine treatment system
1, ion exchange and microporous filters
2, EDI and microporous filters Composition of ultrapure water equipment preparation process
1, pre-treatment System → reverse osmosis system → intermediate water tank → coarse mixed bed → fine mixed bed → pure water tank → pure water pump → ultraviolet sterilizer → polished mixed bed → precision filter → water object (≥ 18MΩ.CM) (traditional process)
2, pretreatment → reverse osmosis → intermediate water tank → pump → EDI device → purified water tank → pure water pump → ultraviolet sterilizer → polished mixed bed → 0.2 or 0.5μm precision filter → water objects (≥ 18MΩ. m precision filter → water object (≥18MΩ.CM) (the latest process)
3. Pre-treatment → first-stage reverse osmosis → dosing machine (PH adjustment) → intermediate water tank → second-stage reverse osmosis (positively charged reverse osmosis membranes) → purified water tank → purified water pump → EDI device → ultraviolet sterilizer → 0.2 or 0.5μm precision filter → water object (≥17MΩ.CM) (the latest Pre-treatment → reverse osmosis → intermediate tank → water pump → EDI device → pure water tank → pure water pump → ultraviolet sterilizer → 0.2 or 0.5μm precision filter → water object (≥15MΩ.CM) (the latest process)
5. Pre-treatment system → reverse osmosis system → intermediate tank → pure water pump → coarse mixed bed → fine mixed bed → ultraviolet sterilizer →Precision filter → water object (≥15MΩ.CM) (traditional process) The above processes have their own advantages, you can choose the process that suits you according to your own situation. With the development of science, many new processes have replaced the old process, reverse osmosis method of obtaining high-purity water has been popularized, but also the most current process.