What are the causes of reverse osmosis membrane pollution caused by medical purified water equipment?

In the operation of medical purified water equipment, the suspended substances, dissolved substances and microbial reproduction contained in the water will cause the reverse osmosis system membrane component pollution.
treatment of the reverse osmosis system should remove these pollutants as far as possible and minimize the possibility of contamination of the reverse osmosis membrane element.
accumulation of pollutants can be known through the daily data record of operating pressure, pressure difference increase, desalination rate changes and other parameters, reverse osmosis membrane components are contaminated, often through cleaning to restore the performance of reverse osmosis membrane elements.
Usually, the main causes of reverse osmosis membrane pollution are the following 1, the new installation of pure water equipment device pipe contains oil substances and welding pipe residues, as well as dust and before the film is not cleaned; Unreasonable; 3, the amount of added chemicals error or water treatment equipment failure; 4, human error; 5, stop running without low-pressure flushing or flushing conditions are not controlled correctly; 6, water supply or water quality changes.
cleaning are generally two ways, physical cleaning (flushing) and chemical cleaning (drug cleaning).
physical cleaning (flushing) is not to change the nature of pollutants, with the force of the pollutants discharged reverse osmosis membrane elements, restore the performance of reverse osmosis membrane elements.
chemical cleaning is the use of the corresponding chemical agents, change the composition or properties of pollutants, restore the performance of reverse osmosis membrane elements.
in order to improve the effect of chemical cleaning, before cleaning, it is necessary to analyze the pollution status to determine the type of pollutants.
the type of contamination, selecting the right cleaning agent can properly restore the performance of the membrane element.