What are the four methods of purifying water?

The four water purification methods are: interception method, membrane separation electrodialysis,

 magnetic separation method, collagen fiber base, and ultrafiltration membrane technology. 

The degree of water quality treatment is related to whether people's requirements for quality of life are effectively met, 

and it is also related to people's life safety and physical health. 

The selection and improvement of technical methods and methods have improved the water quality of production.

Interception method The interception method uses grids or screens as the first treatment process of sewage treatment plants. 

The advantage of this method is that the structure of the equipment used is simple, and the processing process is simple and easy to control.

 The disadvantage is that the equipment is too large and heavy, which is not conducive to on-site installation,

 commissioning and later maintenance and maintenance.

Membrane separation electrodialysis Membrane separation electrodialysis is divided into two steps, 

namely 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 the membrane. Electrodialysis is the process of transferring ions in solution through 

an ion exchange membrane under the action of an electric field.

Magnetic separation method Magnetic separation method can remove magnetic and non-magnetic suspended solids and heavy metal ions in

 wastewater. The method has the advantages of simple equipment structure, convenient operation, easy recycling of filtered impurities, 

and the like. This scheme is especially suitable for the purification treatment of water containing more metal impurities.

The special structure of collagen fiber-based collagen makes the collagen fiber have a larger surface area, and the collagen fiber 

has many active groups, which makes the collagen fiber a kind of adsorption material with great potential.

 The literature shows that with collagen fibers as the matrix, a variety of adsorbent collagen fiber-based materials can be developed

 for water purification.

There are many methods of ultrafiltration membrane technology for water treatment.

The development trend of water treatment technology is to use ultrafiltration water purification technology to replace the original traditional way

 of filtration, so that the water purification process can be guaranteed, and the quality of its water output can be obtained. improve. 

Ultrafiltration membrane technology can enable water purification treatment technology to directly select water raw materials in relatively 

high-quality water sources, thereby avoiding the phenomenon of excessive use of additives compared with traditional water treatment links.