Mixed bed system:
The role of mixed-bed system is to further remove the residual ions in the water after reverse osmosis system. After the pre-desalination reverse osmosis devices, most of the salt ions in raw water has been removed. But the calculation made by specific software of the reverse osmosis membrane shows that RO water cannot reach the boiler feed water quality requirements. There need further desalt of mixed bed to meet the demand. Mixed bed use evenly mixed anion and cation resin to exchange with the cation and anion in the water. That is similar to numerous cation bed and anion bed series, thus to get a good quality of water production.
Mixed bed can run automatically or in manual operation according to user requirements.Mixed bed regeneration contents backwash, replacement, into the acid, into the alkali, flush, mix and other processes.
EDI:
EDI (electrodeionization) super pure water equipments is a deep desalination device, with treating the supply water of power plant according to the EDI technology. The EDI is core technology of preparation pure water and super pure water. It mix together the technology of electrodialysis and ion exchange. The function combine selective permeability which realized by exchange membrane of cation and anion and exchange interaction which realized by ion exchange resin make the ion directional migration under DC field. Though this process the supply water can be deep desalted and the yield water can amount to 15M&branded;.cm. Accompanying the desalination, the hydrion (H+) and hydroxyl (OH-) produced by water ionized can make the ion exchange resin regenerate. So the yield water can produced continuously with no acid-alkali chemical regeneration.
Characteristic:
1. High quality and stability of the yield water.
2. High rate of desalination
3. Utilization rate reach up over 95%
4. Resin doesn't need to regenerate
Advantage：
A) The system can produce the pure water continuously and not for regenerate to stop.
B) No chemical agent regenerate.
C) Considerate stackable design, Small floor area.
D) Easy operating, Perfect security.
E) Operation costs and maintenance cost low.
F) No reserve of acid and alkali and transport cost.
G) The whole desalination system is automatic operation and need no special person. It has unmatchable advantage over the other system. The system is widely used in preparation of pure water and super pure water.
