Specific equipment for purified water production: pretreatment system, two-stage reverse osmosis system, EDI system, polished mixed bed, terminal ultrafiltration.
1, pretreatment system
Including raw water tank, raw water pump, biocide, quartz sand filter, activated carbon filter, heat exchanger, scale inhibitor system. As a pre-treatment of reverse osmosis, the main purpose is to remove suspended solids, colloids, color, turbidity, organic matter, hardness and other impurities in the raw water to prevent subsequent reverse osmosis operation.
2, two-stage reverse osmosis system
Including security filters, high-pressure pump RO, reverse osmosis system. Reverse osmosis system undertakes the main desalination task. Effectively judge and determine the operation of the system.
3, EDI system
EDI's role is to remove electrolytes (including weak electrolytes) through the process of water resistivity from 0.05 to 1.0MΩ-cm to 5 to 16MΩ-cm.
4, polished mixed bed
No chemical precipitation of nuclei and resins, removal of residual trace charged ions and weak electrolytes in pure water, so that the water quality to 18MΩ-cm or more.
5, terminal ultrafiltration
Can effectively remove particles, colloids, bacteria, heat and organic forces in the water. Is the firewall of the whole system to ensure that the output of high-purity water from secondary pollution. Equipment to reduce energy consumption, reduce the use of chemicals, the overall cost is low, the overall equipment operation is stable, high degree of automation, without manual operation, the process parameters of the automatic operating procedures, control parameters can be set online.