How to Do Offline Chemical Cleaning For MBR Membranes

MBR Offline Cleaning I

Step 1: Remove the suction tube and the aeration tube from the MBR module. Then take the MBR module out of the tank. 

Step 2: Use a nozzle to clean and remove the activated sludge attached to the surface of the fibers.

Step 3: Take the MBR elements out of the module and immerse the elements in a prescribed chemical solution tank. Stay for 6-12 hours.

Step 4: Take out the MBR element from the immersion cleaning tank and wash it thoroughly with water to remove the chemical solution.

Step 5: Install the MBR on the MBR module after cleaning.

Step 6: Connect the aeration pipe and put the module in the tank. Stop the filtration, just let the aeration run for more than 30 minutes, and then start the filtration.

Step 7: Before discharging the chemical solution, reduce the sodium hypochlorite with sodium thiosulfate (Na2S2O3 NH2O), and then discharge.

Step 8: If there is a large amount of inorganic scale on the surface of the MBR after sodium hypochlorite washing, acid washing is also needed.