Pretreatment filtration stage
Integrated sterile water treatment equipment first removes large particles of impurities, suspended solids, etc. in the water through pretreatment filtration. Usually, multi-layer filter media such as quartz sand and activated carbon are used. The quartz sand filter can effectively intercept large particles of impurities such as mud and rust in the water, while the activated carbon filter can adsorb organic matter, residual chlorine, etc. in the water to improve the taste and color of the water. This stage lays the foundation for subsequent sterilization and fine filtration, preventing large particles of impurities from clogging or damaging the sterilization equipment and filter membrane, and ensuring the stable operation of the entire system.
Sterilization stage
The water after pretreatment enters the sterilization link. Common sterilization methods include ultraviolet sterilization and ozone sterilization. Ultraviolet sterilization uses ultraviolet radiation to destroy the DNA structure of microorganisms, making them lose their ability to reproduce and survive, thereby achieving the purpose of sterilization. This method sterilizes quickly, effectively, and does not produce secondary pollution. Ozone sterilization uses the strong oxidizing property of ozone to oxidize and decompose the cell walls and cell membranes of microorganisms such as bacteria and viruses, causing them to die. Ozone can also remove odor and some organic matter in the water, further improving the water quality.
Fine filtration stage
The sterilized water then enters the fine filtration stage, which is generally filtered by ultrafiltration membrane or reverse osmosis membrane. The ultrafiltration membrane has a small pore size and can effectively remove bacteria, viruses, colloids and other tiny particles in the water, ensuring that the microbial indicators of the effluent meet the sterility requirements. Reverse osmosis membrane can go a step further. In addition to removing the above impurities, it can also remove soluble salts, heavy metal ions, etc. in the water, so that the effluent water reaches a higher purity. At this stage, the bodies of sterilized microorganisms will also be intercepted by the filter membrane, thereby ensuring the sterility and purity of the effluent water.
Collaborative working mechanism
Sterilization and filtration work together in integrated sterile water treatment equipment, and neither is indispensable. Pretreatment filtration provides good water inlet conditions for sterilization and fine filtration, reducing the impact of impurities on sterilization and filtration effects. The sterilization link effectively kills various microorganisms in the water, reduces the risk of microbial contamination of the filter membrane, and extends the service life of the filter membrane. Fine filtration further removes microorganisms and other tiny impurities that may remain after sterilization, ensuring that the effluent meets high standards of sterility. The three work closely together to achieve the efficient and stable sterile water treatment function of the Integrated sterile water treatment equipment.
