What precautions should be taken during the shutdown process of reverse osmosis equipment

For many users who use reverse osmosis equipment, they only pay attention to the maintenance during operation, but neglect the maintenance during equipment shutdown. In fact, for reverse osmosis equipment, when it is shut down for a long time, maintenance is also necessary to ensure that the reverse osmosis equipment can operate normally when turned on. What are the precautions for using reverse osmosis equipment when it is shut down today? 

Precautions for shutdown and use of reverse osmosis equipment

1. The entire membrane system must be low-pressure flushed with produced water or pre-treatment effluent to remove the concentrated water on the membrane surface and prevent salt precipitation pollution.

2. During low-pressure flushing, other agents such as scale inhibitors should not be added (if the pre-treatment effluent flushing system is used, the dosage of flocculants and reducing agents should be maintained).

3. To prevent back pressure, the permeate discharge valve should be opened first.

4. The decrease in flow rate and pressure should be slow, and the inlet flow rate to the Italian system during the pressure reduction period should not exceed the maximum inlet flow rate of the membrane element and the pressure difference between the two ends of the pressure vessel, nor should it exceed the limit value.

Management during the shutdown period of reverse osmosis membrane equipment

1. Management during daily shutdown period (0-48 hours) refers to normal shutdown procedures, which is crucial; It is necessary to perform low-pressure flushing during shutdown,

And in order to prevent the growth of microorganisms, it is necessary to rinse every 24 hours.

2. Management of reverse osmosis equipment shutdown (2-25 days): After the shutdown, ensure that the pressure vessel is filled with pure water produced by R0, and close all inlet concentrated water valves and production water valves to prevent membrane element drying and microbial growth.

When the temperature is greater than 20 degrees Celsius, it needs to be rinsed repeatedly every 12 hours: when the temperature is less than 20 degrees Celsius, it needs to be rinsed repeatedly every 24 hours. For surface water or water sources with high microbiological pollution, R0 produced water containing 1 The reverse osmosis system is flushed with a solution of 0% sodium bisulfite. If the membrane components are soaked in this solution at the same time, the effect is better, and the repeated flushing cycle will be correspondingly extended.

During the shutdown of the reverse osmosis equipment, the temperature should be maintained between 5C-45C. Low temperature is beneficial for the preservation of membrane components, but it should prevent the reverse osmosis system from freezing and freezing.

The above are the operating precautions that need to be paid attention to when the reverse osmosis equipment is shut down. Everyone must be more careful and strictly follow the specifications when using it.

The above is what Hongjie Water brings to everyone about "What should be paid attention to during the shutdown process of reverse osmosis equipment". We hope it can help you!

Shenzhen Hongjie Water Technology Co., Ltd. is an integrated high-tech enterprise specializing in product research and development, production, sales, engineering design, installation and debugging, technical consulting, and sales of supporting materials in the fields of industrial water treatment and drinking water treatment. Our main products include the design, manufacturing, installation, debugging, and maintenance of water treatment equipment, including pure water equipment, ultra pure water equipment, reverse osmosis equipment, GMP purified water equipment, EDI deionized water equipment, domestic sewage equipment, industrial wastewater equipment, softened water equipment, and reclaimed water reuse equipment, all of which are integrated into an environmentally friendly high-tech manufacturer.