Membrane Technology in Water Treatment 2
Microfiltration membrane
Microfiltration membrane is driven by the static pressure difference, using the sieving effect of the screen-like filter media membrane for separation. Microfiltration membranes are uniform porous films, which are characterized by uniform membrane pore size, high filtration accuracy, fast filtration speed, low adsorption and no media shedding. It is mainly used for the removal of bacteria and particles.
They are widely used in the food and pharmaceutical industries, in the decontamination and purification of beverages and pharmaceutical products, in the removal of particles in the preparation of ultrapure water in the semiconductor industry, and in the concentration and separation of biological products in fermentation broths in the biotechnology field.
Ultrafiltration
Ultrafiltration is a membrane separation technology that uses differential pressure as the driving force to separate solids and liquids or to make substances of different relative molecular masses using the high-precision retention performance of ultrafiltration membranes.
Its technical characteristics are: it can concentrate and separate large molecules or colloidal substances at the same time. Compared with reverse osmosis, it has low operating pressure, low equipment investment cost and operating cost, no phase change, low energy consumption and high membrane selectivity.
It is widely used in food, pharmaceutical, industrial wastewater treatment, and ultra-pure water preparation technology industries.