| Because the indoor air pollution problem is serious more and more, this paper surveyed the complexion of the indoor air pollution, and educed that the contents of SO2,NO2 were higher than the others in the lampblack pollution, and also the contents of SO2,formaldehyde were higher in the tobacco smog pollution, while the contents of formaldehyde were higher in the indoor decoration pollution. Then studied of controlling of formaldehyde in the laboratory, we activated the fly ash with various of methods and contrasted with active carbon and activation AC about their adsorption, found out a activation fly ash whose adsorption is very well. Then we mensurated the balance of adsorption quantity and adsorption capacity, carried through on-the-spot mensuration, and contrasted the economic character. At last we analyzed the mechanism of absorption through SEM picture.
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