Reverse osmosis systems are devices used to produce pure water. They filter raw water (such as seawater, tap water, and groundwater) through reverse osmosis membranes, and after secondary filtration, the water meets the standards for direct drinking. The filtration precision of reverse osmosis membranes is 0.0001 microns, effectively removing colloids, bacteria, and heavy metals from the water.
In the production process of reverse osmosis systems, whether the effluent is qualified is generally demonstrated by conductivity. Conductivity is not an instrument for measuring the purity of water; it mainly measures the amount of ions in the water filtered through the reverse osmosis membrane. The less the content, the fewer the ions in the water after filtration. Relatively speaking, the purity is higher.
Reverse osmosis systems are classified into single pass reverse osmosis systems (single-stage reverse osmosis equipment) and double pass reverse osmosis systems (double-stage reverse osmosis equipment) based on different manufacturing processes.
The difference between the two is quite simple. A reverse osmosis system that undergoes one pass through a reverse osmosis membrane is called a single pass reverse osmosis system, while water that passes through two reverse osmosis membranes is referred to as a double pass reverse osmosis system.
The conductivity of a general single pass reverse osmosis system is usually around 30 μs/cm, while that of a double pass reverse osmosis system is below 10 μs/cm.
Conductivity Meter
Single Pass RO System Process Flow Diagram :
Double Pass RO System Process Flow Diagram :
