The requirements for the influent water quality of reverse osmosis (RO) pure water systems-Yuanlai Water Treatment

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The requirements for the influent water quality of reverse osmosis (RO) pure water systems

Released Date: Jun 05,2020 Article Source: Yuanlai Water Treatment

Pure water equipment can be applied in industries such as chemical engineering and medicine. In the entire system, there will be a complete set of pretreatment devices, mainly for the preliminary treatment of raw water to meet the feed water requirements of the reverse osmosis main unit. The reason why reverse osmosis hosts have relatively high requirements for the quality of the feed water is mainly due to the limitations of various conditions such as the structure, material, and desalination mechanism of reverse osmosis membrane elements.

When water treatment equipment companies design dedicated reverse osmosis pure water equipment solutions for users, they will all go to the site to sample and test the raw water to have a detailed understanding of the water quality. This way, we can better design reverse osmosis pure water equipment that meets the needs of customers. Now let's explore the requirements of reverse osmosis pure water equipment for the quality of raw water.

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1. Pure water equipment can be applied in industries such as chemical engineering and medicine. In the entire system, there will be a complete set of pretreatment devices, mainly for the preliminary treatment of raw water to meet the feed water requirements of the reverse osmosis main unit.

The reason why reverse osmosis hosts have relatively high requirements for the quality of the feed water is mainly due to the limitations of various conditions such as the structure, material, and desalination mechanism of reverse osmosis membrane elements.

Requirements for the feed water of the reverse osmosis main unit:

①The temperature conditions are usually in1to45℃Between

②pH=4-7

③Residual chlorine content<0-1mg/L

④Iron content(mg/L)Dissolved oxygen>5mg/LAt that timeFe<0.05

⑤Organic matter content(COD)＜3mg/L

⑥Turbidity(NTU)＜1.0

⑦Silt density index(SDIvalue)<5

⑧Hardness is10-250mg/L

Only when the raw water meets the above conditions can it enter the reverse osmosis main unit of the system; otherwise, it will damage the reverse osmosis membrane, making the effluent quality fail to meet the standard of pure water. The conductivity will also be very high, and it will also affect the service life of the equipment.

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Second, if one or several of the above indicators fail to meet the standards, it will have the following impacts on the reverse osmosis membrane:

1,ROReverse osmosis membraneIt will be contaminated by metal oxides.

2Colloidal contamination.

3Suspended solids cloggingROReverse osmosis membrane device.

4,ROScaling occurs on reverse osmosis membranes.

This, in turn, has a significant impact on the entire reverse osmosis device

Reduce the overall water production of the reverse osmosis pure water system.

It affects the water quality of the reverse osmosis pure water system.

Increase the overall operating cost of water treatment equipment, including reverse osmosis scale inhibitors, resin regeneration salts, and other water treatment chemicals, etc.

Keywords: Water Softening Equipment Automatic Water Softener Reverse Osmosis Equipment Manufacturer of Water Treatment Equipment

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