Process flow of reverse osmosis ultrafiltration equipment

December 21, 2020

Membrane separation technology is applied in reverse osmosis ultrafiltration equipment, which can effectively remove charged ions, inorganic substances, colloidal particles, bacteria and organic substances in water. It is the equipment in the process of high purity water preparation, brackish water desalination and wastewater treatment. Widely used in electronics, medicine, food, textile, chemical industry, power generation and other fields.

Reverse osmosis (RO) is a kind of membrane separation technology driven by pressure with the help of selective permeable (semi permeable) membrane. When the pressure applied in the system is greater than the osmotic pressure of the influent solution, water molecules continuously pass through the membrane and flow into the central pipe through the water producing channel, and then the impurities in the water, such as ions, organics, bacteria and viruses, are intercepted at the inlet side of the membrane at one end And then it flows out at the outlet of concentrated water to achieve the purpose of separation and purification. The typical process flow of reverse osmosis ultra pure water equipment is as follows:

1. Pretreatment - reverse osmosis - purified water tank - ion exchanger - ultraviolet lamp - pure water pump - water consumption point.

2. Pretreatment - primary ro - Secondary ro (positive charge reverse osmosis membrane) - purified water tank - pure water pump - UV lamp - water consumption point.

3. Pretreatment - reverse osmosis - intermediate water tank - intermediate water pump - EDI device - purified water tank - pure water pump - ultraviolet lamp - water consumption point.

4. Pretreatment → ultraviolet sterilization device → primary RO device → secondary RO device → intermediate water tank → EDI device → deoxidation device → nitrogen sealed pure water tank → TOC UV device → polishing mixed bed → ultrafiltration device → water consumption point.

Pretreatment system generally includes raw water pump, dosing device, quartz sand filter, activated carbon filter, precision filter, etc. Its main function is to reduce the pollution index of raw water and other impurities such as residual chlorine to meet the requirements of reverse osmosis. The equipment configuration of pretreatment system should be determined according to the specific situation of raw water.

Reverse osmosis ultrafiltration equipment mainly includes multi-stage high-pressure pump, reverse osmosis membrane element, membrane shell (pressure vessel), support and so on. Its main function is to remove impurities in the water, so that the effluent can meet the use requirements.

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Author:

Mr. Zheng

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zheng@rmiplast.com

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+86 15888074637