Study on the Pollution Characteristics of Odorous VOCs in a Wooden Furniture Manufacturing Factory
Volatile organic compounds(VOCs)from wooden furniture-manufacturing industry is an important emission source.In order to study the pollution characteristics of VOCs in wooden furniture manufacturing plants,a typical wooden furniture manufacturing plant in Shanxi was selected to carry out sample collection and VOCs detection in different workshops and factory boundaries.The contribution of odor was estimated by the threshold dilution ratio.The results showed that the concentration of TVOCs in each workshop of the wooden furniture manufacturer is as follows:edge banding workshop(183 900.1 μg/m3)>undercoat workshop(13 112.6 μg/m3)>topcoat workshop(4 564.2 μg/m3)>veneering workshop(2 150.0 μg/m3),different workshops have different dominant species.The TVOCs concentrations upwind and downwind of the factory boundary are 489.7 μg/m3 and 639.6 μg/m3 respectively.The VOCs in the upwind direction are aromatic hydrocarbons(43.4%),while the halogenated haloalkane(38.4%)in the downwind direction account for the largest proportion.The first three species The monomer compounds are dichloromethane,ethyl acetate and m-xylene.The main odor substances in the factory boundary were hexanal,p-diethylbenzene and acetaldehyde,accounting for 77.6%.The main odor substances in the workshop were acetaldehyde,p-diethylbenzene,hexanal,propylbenzene and m-xylene,which contributed 66.0%.
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