The correct use of the new reverse osmosis membrane
Technical points of using the new RO reverse osmosis membrane:
1, first of all, the quartz sand, coconut shell activated carbon wash, the newly installed quartz sand, coconut shell activated carbon wash time longer.
2, Detect whether there is excess chlorine, such as excess chlorine, solve the problem of residual chlorine and then carry out the next step of RO reverse osmosis membrane.
3, after the new film is installed, soak the film for 1 to 2 hours, because it is a dry film, the soaked film is relatively wet, to prevent the pressure is too high to damage the film.
4, and then start the high pressure pump, the pressure should be slowly increased from 2 kg to 8 ~ 10 kg, the desalting rate of the new film is better.
5, Residual chlorine control below 0.003.
6. Open the concentrated water valve before starting the high pressure pump, and slowly adjust the concentrated water valve after the high pressure pump is opened to control the single film recovery rate of about 15%.
7, the first half hour of water must be drained, because there is a protective liquid in the membrane, so as not to affect the taste of the water.
8, detect the PH value of the water, more than 6.5.
Second, how to judge the reverse osmosis membrane needs to be cleaned?
Under normal circumstances, reverse osmosis membrane elements can be used for about 2 to 3 years. If you want to extend the service life, the reverse osmosis membrane elements can be cleaned, usually divided into physical washing and chemical washing two ways, when the physical washing can not make the reverse osmosis membrane performance recovery, it should be necessary to carry out chemical cleaning. Under normal circumstances, reverse osmosis membrane elements can be used for about 2 to 3 years. If you want to extend the service life, the reverse osmosis membrane elements can be cleaned, usually divided into physical washing and chemical washing two ways, when the physical washing can not make the reverse osmosis membrane performance recovery, it should be necessary to carry out chemical cleaning.
