I want to use evaporation to remove salt, and I want to use a membrane to concentrate it first. What is the general limit of salt concentration entering the membrane?

It is a well-founded practical behavior to ask the manufacturer for the technical specifications of the film products. It is not a good idea to do it behind closed doors. You ask questions about everything, the sources of the information you ask are unreliable, and you have no ability to discern the knowledge you ask about. This is discrediting the design industry.

This is not defined in this way. First of all, it must not exceed the precipitation concentration. Secondly, the viscosity cannot be very high. According to the general data of membrane separation, it can be concentrated 5-10 times. Then the crystals you concentrate five to ten times must not be able to precipitate and the viscosity must also meet the requirements.

Hello, this post should be posted to the water treatment section. . Or ask the moderator to move to the water treatment section. . The original poster asked no questions. . When you are talking about membrane concentration, do you use coil type reverse osmosis RO or disc type reverse osmosis DTRO? I guess you should use DTRO for your water quality. RO is suitable for water with low salt content and seawater desalination. ； The DTRO membrane can now weigh 120 kilograms. After concentration, the conductivity of the concentrated water can reach more than 100,000. Calculated based on a 50% recovery rate, the ultimate conductivity of the DTRO membrane is about 40,000-50,000, which translates into a salt content of about 3%-5%. . . Any more than this is not a good deal. You can measure the conductivity of your raw water. The quality of the water entering the membrane is usually measured by conductivity.

If the conductivity is 100,000, what is the approximate salt content? What is the approximate relationship between conductivity and salt content?

Can crystal coefficient RO membrane not be used? What is the maximum viscosity RO membrane can withstand?

This post was last edited by qq375170364 on 2019-2-19 13:27. You can download this picture from Baidu

DTRO, STRO, electrodialysis