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Now a number of cities have been plagued by the problem of urban air pollution.The physical damage will become more and more serious if residents live in this environment for a long time.So many city choose to plant trees to improve the city’s air.I thought of another way to clear the air and it used to be on my conceptual design of city air purifier which is used in public places.It is mainly using semipermeable membrane filtration principle to the harmful part of the filter air and then the harmless part is emitted into the air to achieve the purification effect.
Central South University