Experimental research on reduction of formaldehyde concentration in an acoustic laboratory by a new activated carbon adsorption technology

This paper carries out an experimental analysis on the problem of serious excessive concentration of formaldehyde pollutants in an acoustic laboratory, and finds that the main source of the polluted gas is the production of sound-absorbing materials for the inner wall of the acoustic laboratory. In view of the actual situation that the laboratory has been built and put into use, this paper proposes to set up a self-developed activated carbon purification device impregnated with copper manganese oxide in the laboratory to achieve efficient adsorption of formaldehyde. Test verification shows that compared with ordinary activated carbon materials, the activated carbon material impregnated with copper manganese oxide has a significantly higher formaldehyde adsorption efficiency, which is increased from 77% of ordinary activated carbon materials to 95%. The indoor formaldehyde mass concentration can be reduced from 0.211 mg/m3 to 0.062 mg/m3, which is lower than the national standard limit, and the indoor air quality has been significantly improved.