What are the requirements of the reverse osmosis membrane of purified water equipment for raw water?

The reverse osmosis membrane system is the core filtration system of the purified water equipment, so if the reverse osmosis membrane achieves excellent filtration performance, it must meet its influent requirements, then what are the requirements for the raw water of the reverse osmosis membrane of the purified water equipment? Today's small We have summarized the following indicators for your reference
.

Generally, in order to ensure that the reverse osmosis membrane influent conditions meet the standards, we need to design a set of pretreatment processes for raw water indicators when designing the process solution for purified water equipment, and finally remove the following substances to meet the reverse osmosis membrane influent standards
.

1.
Bacteria: Bacteria live on cellulose acetate, so they will damage the membrane
.

2.
Iron content: the higher the PH value, the faster the oxidation, and the lower the value, the better the oxidation speed
.

3.
Particulate matter: Particles larger than 5um cannot enter the reverse osmosis device, otherwise the membrane will be damaged
.

　　4.
SDI and turbidity: the smaller the SDI, the better, and the turbidity should be less than 0.
2NTU
.

　　5.
Oil and grease: Oil and grease cannot be contained in the raw water requirements of the incoming water
.

　　6.
Organic matter: To remove organic matter in water, activated carbon can be used to remove it
.

　　The reverse osmosis membrane of purified water equipment must meet these requirements, which can not only ensure the filtration state of reverse osmosis membrane, but also prolong the service life of purified water equipment
.