Problems of Making up Water for Boilers in Full Membrane Process and Their Solutions

The full membrane process of ultrafiltration(UF) + reverse osmosis(RO) + adopts the up-to-date separation technology to make up water for boilers.Ultrafiltered water with high quality can provide the optimum protection for the RO membrane,and the substitution of EDI technology for the conventional mixed bed eliminates thoroughly the usage of acids alkalis and sewage drains.This system also has certain defects during the operation due to different water sources in every region,so modification for the system should be made accordingly.The actual operation result in the thermo-electric plant shows that the system after modification is reliable convenient and water quality can completely meet the requirements of boilers in water usage.