Common question about Reverse Osmosis Equipment

1) Why does the sealing ring in the reverse osmosis equipment expand?

In order to achieve the sealing and isolation of each section in the membrane shell of the reverse osmosis equipment, a sealing rubber ring should be used in the membrane shell to reduce the installation resistance, and attention should be paid to smearing lubricants such as glycerin during use; it should be noted that the lubricant should be carefully used Vaseline Or other petroleum-based grease lubricants, otherwise it will cause cracking of the fresh water pipe, especially the expansion of the sealing rubber ring, which will affect the disassembly of the membrane element.

2) Is the water output of each membrane element consistent in the reverse osmosis equipment process?

Since there is a pressure difference between the feed water end and the concentrated water end of the membrane element, that is, the membrane pressure drop, and because the salt content of the concentrated water of each element is higher than the salt content of the feed water, the osmotic pressure of the feed water of each element is along the flow of the system. constant increase. If the fresh water back pressure and osmotic pressure are ignored, the water production of each membrane element along the system flow will be proportional to the difference between the respective working pressure and osmotic pressure, that is, the water production of each membrane element will gradually decrease.

3) What should be noticed during the initial operation of the reverse osmosis equipment?

Firstly, the air in the pipeline is emptied by means of low pressure and low flow, and the pressure should be kept between 0.2~0.4MPa. When using low pressure flushing and exhausting, the produced concentrated water and product water should be discharged into the sewer.

4) How to replace the cartridge filter element in system?

After the cartridge filter has been used for a period of time, the filter element will be blocked. When the pressure difference is greater than 0.02MPa, the filter element should be replaced.

After shutdown, use a professional wrench to open the filter bottle of the filter, take out the old filter element, replace the new filter element, and then use a professional wrench to rotate the filter bottle of the filter to tighten.

5) How to judge whether the reverse osmosis system should be processed chemical cleaning?

When the water production of the system is reduced by 5%-10% compared with the initial period or the last operation and cleaning, and the desalination rate of the system is reduced by 2.5%-5% compared with the initial period or the last operation and cleaning, the pressure difference of each section of the system is Initially or 1-2 times after the last run of cleaning.

Remarks: The water yield and desalination rate will be affected by the water temperature, so the results of the test should be the results obtained under the same water temperature.

6) What are the key points for the selection of the installation location of the water softening equipment?

The water quality of the softened water equipment is good, and the system runs stably. The following points should be paid attention to during installation:

a) Demineralized water equipment should be as close as possible to the drain

b) If other water treatment equipment is required, the installation location should be reserved

c) Due to the frequent addition of salt to the salt tank, a salt storage location should be reserved

d) Do not install the softened water equipment within 3 meters from the boiler, otherwise the hot water will flow back to the softened water equipment and cause damage

e) Do not place the softened water equipment in an environment where the room temperature is lower than 1°C and higher than 49°C.

7) What are the points should be noticed during the installation of Haiyuan ultrapure water reverse osmosis equipment?

a) The equipment installation site should be selected in a flat, clean environment, close to the power source and water source.

b) Do not get close to the fire source and any heating body, so as to avoid the heat affecting the efficiency of its operation.

c) The installation location of the equipment should be able to facilitate drainage, so that the drainage pipes of the equipment can be kept smooth.

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