Thread Content
This post was last edited by hesonchang214 on 2020-3-4 at 12:20. 1. The amount of sodium hypochlorite to be added should be adjusted according to the bacterial count in the water source. In addition to regularly testing the bacterial count, it is also necessary to monitor the free chlorine level at the inlet of the mixed ion exchange column, to prevent excessive free chlorine from affecting the proper operation of the resin. 2. Be aware of the risk of contamination in the water supply valves; valves that are used less frequently are prone to microbial contamination. Once contaminated, they cannot return to their original state unless flushed with water for an extended period of time. 3. Commercially available sodium hypochlorite solutions are prone to oxidation and decomposition. If they are used for an extended period of time or if the system is shut down for long periods during holidays, in addition to draining water from the tank to allow the reverse osmosis membrane to operate for a few hours from time to time in order to keep the system active, it is also necessary to replace the sodium hypochlorite solution at appropriate intervals. 4. Mixed ion exchange columns are usually operated in a one-in-use and one-backup configuration. Bacteria can reproduce rapidly in stagnant ultrapure water; therefore, the backup mixed bed is regenerated before it is put into use to ensure effective sterilization.