2. Membrane separation electrodialysis: membrane separation and electrodialysis. The so-called membrane separation is a method of concentrating and separating impurities in water by using the selective permeability of membrane. Electrodialysis is a process in which ions in solution are transferred through ion exchange membrane under the action of electric field.
3. Magnetic separation method: Magnetic separation method can remove magnetic and nonmagnetic suspended solids and heavy metal ions from wastewater. The method has the advantages of simple equipment structure, convenient operation and easy recovery of filtered impurities. This scheme is especially suitable for the purification of water containing more metal impurities. ?
4. Collagen fiber base: The special structure of collagen makes collagen fiber have a large surface area, and there are many active groups on collagen fiber, which makes collagen fiber a promising adsorption material. Literature shows that a variety of collagen fiber-based materials can be developed and applied to water purification with collagen fiber as matrix.
5. Ultrafiltration membrane technology: Ultrafiltration membrane technology allows water purification technology to directly select water raw materials from relatively high-quality water sources, thus avoiding the phenomenon of excessive use of additives in traditional water treatment. In some water gathering places and when the temperature of raw water is relatively low, there will be relatively few colloidal substances in the water, but the turbidity of raw water is relatively unstable.