Reverse osmosis membrane

Product introduction

Reverse osmosis is a kind of reverse migration movement of osmosis, which is a separation method of solute and solvent in solution under pressure driven by the selective interception of semi-permeable membrane. It has been widely used in the purification and concentration of various liquids, among which the most common application is in the water treatment process. Using reverse osmosis technology to remove inorganic ions, bacteria, viruses, organic matter and colloidal impurities in raw water, in order to obtain high quality pure water.

Technical parameter

Storage conditions for reverse osmosis membrane components

New film (before use)

The membrane element must always be kept in a wet state. Even in order to confirm the quantity of the same package and need to be opened temporarily, it must be in the state of not poking the plastic bag, this state should be kept until use.

When stored in the atmosphere of more than 10℃, we should avoid direct sunlight and choose a well-ventilated place. At this time, the storage temperature should not exceed 35℃.

If freezing occurs, physical damage will occur, so insulation measures should be taken to avoid freezing.

membrane element after water flow

The membrane element must always be kept in a dark place, the storage temperature does not exceed 35℃, and to avoid direct sunlight.

 If the temperature is below 0℃, it may freeze, and anti-freezing measures should be taken.

Composite series membrane elements should be soaked in pure water or reverse osmosis filter water containing stored drugs (500 ~ 1000mg/L, pH 3 ~ 6).

No matter under what circumstances the preservation, can not make the film in a dry state.

The concentration and pH value of the preservation solution should be kept in the above range, which needs to be checked regularly. If deviation from the above range is likely to occur, the preservation solution should be modulated again.

Performance characteristics

The desalting rate of the membrane element is determined when it is manufactured and formed. The desalting rate depends on the density of the ultra-thin desalting layer on the surface of the membrane element. The denser the desalting layer, the higher the desalting rate and the lower the water yield. Reverse osmosis of different substances desalting rate is mainly determined by the structure of the substance and molecular weight, the desalting rate of high price ions and complex univalent ions can be more than 99%, the desalting rate of univalent ions such as: sodium ions, potassium ions, chloride ions is slightly lower, but also more than 98% (the longer the membrane use time, the more chemical cleaning times, reverse osmosis membrane desalting rate is lower). ; The removal rate of organic matter with molecular weight greater than 100 can also be over 98%, but the removal rate of organic matter with molecular weight less than 100 is low.