What Are the Effects of Raw Water Temperature on the Reverse Osmosis of an Ultrapure Water System?

Does the temperature of raw water affect the reverse osmosis (RO) process of an ultrapure water system? Actually, the temperature of raw water affects both the output per unit time and the safety of the RO membrane. So, what exactly are the effects? This article will discuss the specific impacts of raw water temperature on RO equipment.

I. The Impact of Raw Water Temperature on the Output per Unit Time of Reverse Osmosis Equipment:

We all know that water does not follow the principle of thermal expansion and contraction. When the water temperature is between 20 and 45 degrees Celsius, the output per unit time of the RO equipment will increase as the temperature rises. However, once the water temperature reaches 40 degrees Celsius, the increase in output will stop. Naturally, the lower the water temperature, the lower the output of the equipment.

II. The Impact of Raw Water Temperature on the Safety of the Reverse Osmosis Membrane:

Reverse osmosis membranes are generally made of special materials with relatively small pore diameters. When the temperature of the raw water decreases, the activity of molecules decreases, which affects the permeation efficiency of the membrane and may even damage it. However, when the water temperature rises to a certain level, it will also damage the membrane.