| Easily saturated. Activated carbon treatment of indoor air pollution process, mainly physical adsorption process. In this process, the adsorbed substances in activated carbon gradually occupy the internal pores of activated carbon, and the conductive adsorption pores are reduced, and the adsorption capacity is gradually decreased.
Solutions:The concentration of indoor volatile organic pollutants is relatively low, and a large part of the pores in activated carbon are occupied by water in the air, which can be evaporated by the way of exposure out the pore space, and then adsorbed. But through the means of exposure to the sun, can not be the internal adsorption of organic matter released, so exposure times should not be too much, recommended no more than twice. The frequency of exposure is certainly the more frequent the better, because the absorption capacity of activated carbon is gradually decreasing (the faster the decline is later).
Hate the heat. The adsorption process of activated carbon is actually a process of coexistence of "absorption" and "removal ". In general, the speed of" absorption "is greater than that of" removal ", but the speed of "removal" has a great relationship with temperature. The higher the temperature, the greater the kinetic energy of the gas, the easier it is to break free from the shackles of activated carbon, and to break away from activated carbon, resulting in an increase in the speed of "removal ". In short, the lower the temperature, the better the adsorption effect of activated carbon, so industrial treatment generally requires that the inlet exhaust gas temperature is not more than 40 degrees Celsius.
Solutions：Do not use activated carbon to treat indoor organic pollutants at high temperature. For example, in the summer car 50-60 degrees Celsius, activated carbon is basically ineffective. Perhaps someone will ask when the temperature is high is not also when formaldehyde volatilizes? Generally speaking more than 30 degrees indoor, people will appear discomfort and open refrigeration equipment, so the normal indoor temperature is in the activated carbon adsorption temperature range. What if the air conditioner is not turned on in summer and the temperature is very high? Then open the window directly, release formaldehyde and other harmful substances can be.
Hydrophilism.The pore diameter range of activated carbon is widely distributed, which is basically a "universal suction ", and is also non-selective to the adsorbed substances, which can cover almost all volatile organic compounds in indoor air. In the adsorption of harmful gases in the air at the same time, will also adsorb the moisture in the air, so that the indoor air humidity is reduced.
Solutions：Although activated carbon has hydrophobic type and hydrophilic type, but can not avoid water adsorption by activated carbon. If the indoor humidity is too low because of the water absorption of activated carbon, it is best to replenish water by drinking water. If there is any discomfort, add a small humidifier to slightly lift the humidity away from the activated carbon device. But it is not recommended to put a large humidifier near the activated carbon equipment, otherwise there will be no humidification effect, will also affect the effect of aldehyde removal.
Fragility. Activated carbon itself is porous structure, texture is relatively crisp, so activated carbon in the production and transportation process is easy to break, wear, produce dust.
Solutions：Fragility can not be avoided, because only porous materials will have better adsorption, and porous materials must have the characteristics of crisp and easy to break. In the process of use, to do a good job of dust prevention, to prevent dust overflow into the indoor air can be. |
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