Ultrafiltration membranes can last for several years How to maintain for longer life

How many years can ultrafiltration membranes last? How to maintain a longer life?

The life of ultrafiltration membranes is generally 3 years, but the service life may be different depending on the water quality in different places. As long as you do a good job of regular flushing, backwashing, and chemical cleaning, maintaining a low working pressure, increasing pre-filtration to improve the quality of the influent water, etc., will also greatly extend the life of the ultrafiltration membrane. Let's follow the ultrafiltration membrane Xiaobian to see how to maintain it to extend the life of the ultrafiltration membrane.

Are these methods still sourced from senior engineers who are water experts? Water experts are professional in after-sales service of water purifiers, so they are very experienced in this regard. Ultrafiltration membrane Xiaobian will share with you the knowledge and benefits of water purifiers.

1. The ultrafiltration membrane should be cleaned regularly

Everyone knows that the filter element of the water purifier needs to be cleaned, and the ultrafiltration membrane is the same. Otherwise, it will affect the performance and life of the ultrafiltration membrane, regular cleaning can also maintain the ultrafiltration membrane has good permeability, the cleaning method will generally be determined according to the nature of the ultrafiltration membrane and the nature of the treatment liquid, but in most cases it is cleaned with clean water, and then different chemical agents are used to clean according to the situation. Specifically, it can be divided into the following situations, and the electro-coating material can be cleaned by ion-containing solubilizer; Water-soluble coatings can be cleaned with "bridge-bond" solvents; Food industry protein precipitation can be cleaned with Ruan enzyme solvent, phosphate, silicate-based alkaline detergent; Inorganic salt precipitation on the membrane surface can be removed using chelating agents, acids and bases such as EDTA. Of course, different membrane elements can use different cleaning methods, for example, tubular components can be cleaned with sponge, hollow fiber components can be backwashed, and food films also need to be disinfected and other treatments.

2. Introduction to physical cleaning methods

The cleaning of ultrafiltration membrane is actually very simple, physical cleaning is very simple, for the general membrane pores are not particularly small removable ultrafiltration membrane, in general, can be directly disassembled with soft substances for wiping and rinsing; According to the size of the membrane pipe diameter, a suitable sponge ball can be selected to wipe and rinse with special equipment, and this method can be used repeatedly; Cleaning the ultrafiltration membrane with hot water at 30-40 °C can remove some viscous or hot-melt impurities;

3. Store in protective solution after use

The ultrafiltration membrane should be preserved after use, generally stored in the protective solution, the purpose of this is mainly to prevent the ultrafiltration membrane from shrinking after dehydration, so that the membrane structure is damaged and the permeability is reduced. The preservation of ultrafiltration membrane is generally divided into short-term storage and long-term storage, short-term storage is generally ultrafiltration membrane after suspension of use, generally less than 10 days, should be the ultrafiltration membrane sterilization and disinfection, cleaning agent is generally 15ppm (ml/L) HY-240 fungicide, and then the inlet valve, drain valve and regulating valve of the ultrafiltration membrane are closed to maintain the sealing and sterilization of the ultrafiltration membrane; Long-term storage is generally when the ultrafiltration membrane is stopped for more than 10 days, the ultrafiltration membrane should first be sterilized and backwashed, and then injected with HY-310 protective liquid in the ultrafiltration membrane to seal and preserve. The preservation of ultrafiltration membranes is very important, which will affect the performance and service life of ultrafiltration membranes, so after use, the ultrafiltration membrane must be cleaned and sterilized in an all-round way