Liquid membrane for preventing and treating local environment air pollution, liquid membrane device and air filtering device

The invention provides a liquid membrane for preventing and treating the local environment air pollution. The liquid membrane comprises a carrier material. The liquid membrane is characterized in that the carrier material is soaked into a membrane liquid, and the membrane liquid is composed of 70-90 mass parts of water, 3-10 mass parts of a moistening agent, 0.3-5 mass parts of a membrane protecting agent and 0-5 mass parts of a PH regulating agent. The invention also relates to a liquid membrane device comprising a carrier material fixing structure, the carrier material, a membrane liquid and a membrane liquid container. The invention also relates to an air filtering device using the liquid membrane, wherein the air filtering device can be a mask, an air conditioner, an air purifier and the like. With the liquid membrane, the liquid membrane device and the air filtering device, solid, liquid and air pollutants can be eliminated together, so that the air quality of the local environment is effectively improved.