Causes and Solutions for Excessive Conductivity in Purified Water Equipment

The conductivity of purified water equipment is a common problem encountered by many users. Why does the conductivity of purified water equipment sometimes exceed the standard, and how can this be resolved?

1. Water Quality Issues: Check for significant changes in the raw water quality.

Solution: If the increased conductivity of the product water is due to an abnormally high influent conductivity, adjust the influent conductivity. The product water conductivity should return to normal after the influent conductivity decreases.

2. Conductivity Meter Issues: Check if the conductivity meter is functioning correctly.

Solution: If the meter reading is incorrect, replace it with a new one.

3. Membrane Module Issues: Check if the reverse osmosis membrane module is aging or has been oxidized by a oxidizing medium.

Solution: If this is the cause of the decreased desalination rate, replace the reverse osmosis membrane module.

4. Reverse Osmosis Membrane Fouling: The reverse osmosis membrane may be fouled due to contamination.

Solution: Clean the reverse osmosis membrane. Regular chemical cleaning according to the operating instructions is recommended.

5. Operational Issues: Check for any sudden shutdowns or improper operation. Solution: This situation can easily cause back pressure on the reverse osmosis membrane, leading to membrane rupture and a sharp increase in the conductivity of the permeate after restarting. Replace the reverse osmosis membrane.

6. Sealing Ring Issue: A broken sealing ring or leakage at the connection between the reverse osmosis membrane module and the sealing ring can cause a sharp increase in conductivity.

Solution: It is recommended to replace the sealing ring. Specifically, test the water quality of each membrane module and identify and replace the leaking part.

The above are the causes and solutions for excessive conductivity in purified water equipment. If your purified water equipment also exhibits excessive conductivity, you can check each issue using the methods described above and find the appropriate solution.