Regeneration of anion exchange resin

　　Regeneration of anion exchange resin

　　(1) Alkali, with a specific gravity of more than 5, empty the water in the pudendal bed;

　　(2) Open the intake valve and the upper drain valve, all other valves are closed, and then open the alkali pump;

　　(3) When the liquid level of alkali exceeds 500 PX of resin, open the lower drain, and the flow rate of the lower drain is the same as the flow rate of alkali intake. At this time, the flow rate is controlled at 600-1000L/h, and the time of alkali intake must not be less than 60 minutes. After the completion of alkali intake, empty the shady bed of alkali.

　　When cleaning the shade bed, it is necessary to open the pump and fan of the intermediate water tank to prevent the alkali liquid from flowing back to the intermediate water tank, and then rinse the residual alkali in the alkali pipeline into the alkali tank and then start shade bed cleaning. Like the cleaning of the positive bed, the PH value of the discharged water is about 7 (neutral), and the test conductivity is less than 5.

　　Gelatinized ion exchange resin

　　Understanding the regeneration method of Sichuan anion exchange resin, let's see how Sichuan anion exchange resin is regenerated.

　　(1) Acids with a specific gravity of more than 3, and all the water in the anode bed is emptied;

　　(2) Open the acid inlet valve and the upper drain valve, all other valves are closed and the acid pump is opened;

　　(3) When the acid level exceeds 500 PX above the resin, open the lower drain. The flow rate of the lower drain is the same as that of the acid inlet. At this time, the flow rate is controlled at 600-1000L/h and the acid inlet time is not less than 40 minutes.

　　After the acidification is finished, the positive bed can be cleaned directly. Firstly, the sand filtration is opened, and the precision filtration is in the upper row and the upper row. Remove the residual acid in the acid inlet pipeline and the up-and-down pipeline by opening the up-and-down inlet valve and the down-drain inlet valve. At this time, the precision filter outlet valve is opened and closed, and the acid inlet valve is closed after flushing the residual acid in the acid pipeline into the acid tank. Close the acid inlet valve under the positive bed and start cleaning. When cleaning, open the valve on the positive bed, the water in the positive bed must always overflow the resin. Do not dehydrate the cationic exchange resin in Sichuan; wash until the outlet PH value of the lower drain valve is about 7 (near neutral).