The water quality of reverse osmosis inlet is high in salt content and hardness. The hardness after secondary softening is generally 3.5 (the height of exchange column is 2m, and the resin filling amo

The water quality of reverse osmosis inlet is high in salt content and hardness. The hardness after secondary softening is generally 3.5 (the height of exchange column is 2m, and the resin filling amount is 85% of that of Zibo Dongda University). The service life of reverse osmosis membrane is related to two aspects.

1, system pretreatment

The lower the sdi required for pretreatment before water inflow, the longer the membrane life.

2, system scale inhibitor

If the hardness of inlet water is relatively high, then choose some imported scale inhibitors, such as Hu Da, Coriolis and Bedi, which are all good. You should be able to find specific information from the Internet.

The quality of product water is related to membrane. The higher the membrane desalination rate, the better the water quality, and of course it is also related to the recovery rate. The lower the desalination rate, the better.