Sterilization and cleaning plan after installing and replacing 3M horizontal folding water filter element

For replacing the 3M horizontal folding water filter element, its installation method is relatively special. Unlike the general water filter element, the installation will be more complicated and pay more attention to details. The installation process and method of replacing the 3M horizontal folding water filter element: Wet the O-ring with grease or water, and slowly insert the filter element upside down into the water filter, so that the filter element is aligned with the groove. After the folded filter element is fully inserted, the top fin of the filter element is pressed with a stainless steel orifice plate, and the screw does not need to be too tight to prevent deformation due to force. Since the pleated filter element itself has been sterilized by high temperature, do not touch the filter element with your hands. Rinse the filter element as much as possible for half an hour before use. When starting up or shutting down, you need to turn the valve slightly, do not open or close it all at once, so as not to damage the filter element when the pressure is high. Alternative to the sterilization and cleaning method of 3M horizontal folding water filter element: 1. Generally choose backwashing on the production line: first turn off the original liquid and filtrate pipeline switch, rinse with bacteria-free water, input from the original outlet, from the inlet or the lower part of the filter The drain hole is discharged, and the backwash must be under pressure but not too large, usually about 5 kg. 2. Remove the filter element and place it in the cleaning solution for cleaning, first soak it in repeated cleaning. The cleaning solution is generally available: ①Sodium hydroxide, 0.1N NaOH; ②1-2% citric acid water solvent or 0.1N oxalic acid solvent, 0.1N hydrochloric acid solvent; ③Enzyme solvent and other solvents, when cleaning, the general temperature is controlled at 30-40 Spend. Matters needing attention: The filter stock solution with relatively high protein content, such as draft beer, nutrient solution, etc., must be sterilized at high temperature after the filter element is cleaned to prevent the high temperature aggregation of protein from clogging the membrane pores.

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