A composite material capable of preventing and eliminating microbial contamination in drinking water and its preparation method

Abstract

The invention provides a composite material for prevention and elimination of microbial pollution in drinking water and a preparation method thereof; mesh polyester filter sponge is used as a substrate for vacuum magnetron sputtering for plating of a metal film, the mesh polyester filter sponge plated with the metal film is compounded with a chemical fiber grid fabric into one body, and one sided or both sides of the mesh polyester filter sponge plated with the metal film is / are pasted with the chemical fiber grid fabric to form a multilayer composite structure. When both sides of the mesh polyester filter sponge plated with the metal film are pasted with the chemical fiber grid fabric, the mesh polyester filter sponge plated with the metal film is in the inner layer, and both sides of the mesh polyester filter sponge plated with the metal film is pasted with the chemical fiber grid fabric to form a sandwich structure. The composite material makes full use of the characteristic of large specific surface area of the active carbon mesh polyester filter sponge to make metal ions and water molecules on the surfaces fully contacted for rapid release to achieve sterilization effect, and overcomes the defect that the active carbon mesh polyester filter sponge is not impact resistant in water.

Description

Technical field [0001] The invention provides a composite material for preventing and eliminating microbial pollution in drinking water, and belongs to the technical field of new materials. Background technique [0002] With the rapid development of urbanization and industrialization, urban streets continue to widen, new residential development projects continue to expand, industrial projects and agricultural projects also continue to increase, and the rapid extension of highways and high-speed railways. The development of these projects has made some areas The number of drinking water sources has decreased, and groundwater and surface water have caused varying degrees of pollution, which has caused continuous decline in the quality of drinking water. For example: 1. Some rivers and ponds are polluted by excessive industrial discharge water, which has gradually reduced the original drinking water sources. In some places, the quality of drinking water has declined, which has affec...

AI Technical Summary

Problems solved by technology

3. The water storage tanks used in the secondary water supply of urban high-rise buildings cannot be cleaned regularly, so that the drinking water quality of residents in some high-rise residential areas exceeds the standard

6. Drinking water on board ships in ocean transportation, water towers on construction sites, temporary water storage tanks, etc. are prone to breed bacteria, resulting in secondary pollution of drinking water

[0003] The current conventional sterilization methods for drinking water: 1. Chemical sterilization method: use liquid chlorine, chlorine dioxide, hypochlorite and other chemicals, and add them to the water regularly. This method will leave chemical residues in the water during application , so the quality of water cannot be guaranteed, long-term drinking will affect people's health

In addition, the pungent odor of chlorine also affects the taste of water.

2. Heating disinfection method: the cost of this method is high, and it is not easy to operate at the water intake point and water treatment plant

3 and 4 Both methods are difficult to operate at water intake points or water plants, and they are also unable to achieve continuous sterilization, and the price is relatively expensive. These two methods are only used in special fields

The thread with bactericidal function in the patented thread system is actually a single silver fiber. Because the specific surface area of ​​the silver fiber is small, the amount of silver ions released by the thread system is not enough in a unit time, and the bactericidal effect is not very ideal.

[0005] To sum up, the existing water purification material technology can not meet the needs of drinking water disinfection, now provide a composite material for drinking water disinfection for consumers to choose