REDUCTION OF AIR DUST OF THE WORK ZONE AT WOODWORKING ENTERPRISES
Madani Mariia
Odessa National Technological University, Odesa, Ukraine
https://orcid.org/0000-0001-9386-7364
DOI: 10.52363/2522-1892.2022.1.10
Keywords: dust emission treatment, technical ecology, environmental protection measure
Abstract
The assessment of air dust at the workplaces of the woodworking enterprise was carried out. It was found that the dust in the workplace exceeds the established standard MPC for wood dust by an average of 1.3…2.5 times. The most unfavorable working conditions are observed at the workplaces of grinding and belt machine operators, where the dust concentration reaches 5.7 MPC.
The processes of spreading and settling of dust in production facilities have been studied. It is established that regardless of the wood species, the change in the dust content of the working area and the density of dust in the production premises at different distances from the sources of dust removal is subject to the exponential law. Experimental dependences characterizing these changes are obtained.
Existing aspiration systems were examined. The discrepancy between the volumes of air removed from the equipment and the design value has been established, which leads to the removal of dust into the air of the work area and causes increased dust in the workplace. Examination of aspiration systems showed that the reason for their unstable operation is the presence of dust deposits on the inner surfaces of horizontal air ducts.
References
1. Dadak, Yu. R., Liashenyk, A. V., & Klymash, R. R. (2015). Shkidlyvist pylu derevyny vid derevoobroblennia. [Harmfulness of wood dust from woodworking]. Naukovyi visnyk NLTU Ukrainy, 25(1), 174–179 [in Ukrainian].
2. Dadak, Yu. R., & Liashenyk, A. V. (2016). Chynnyky kompleksnoho vyrishennia pytannia ekolohichnoi efektyvnosti protsesiv znepylennia na derevoobrobnykh pidpryiemstvakh. [Factors of the complex decision of a question of ecological efficiency of processes of dedusting at the woodworking enterprises]. Naukovyi visnyk NLTU Ukrainy, 26.7, 277–284 [in Ukrainian].
3. Batluk, V. A., Vasyliv, R.M., & Stets, R. Ie. (2012). Pidvyshchennia efektyvnosti vlovlennia dribnodyspersnykh fraktsii pylu v systemakh ochystky povitria vid pylu derevoobrobnykh pidpryiemstv. [Improving the efficiency of capturing fine dust fractions in air purification systems from dust of woodworking enterprises]. Promyslova hidravlika i pnevmatyka, 4, 43–49 [in Ukrainian].
4. Kozii, I. S., Pliatsuk, L. D., Hurets, L. L., & Trunova, I. O. (2021). Vrakhuvannia parametriv aerozolnykh vykydiv pid chas rozrobky tekhnolohichnykh rishen zmenshennia vplyvu na dovkillia. [Taking into account the parameters of aerosol emissions during the development of technological solutions to reduce environmental impact]. Technogenic and ecological safety, 9(1/2021), 3–10. DOI: 10.52363/2522-1892.2021.1.1. [in Ukrainian].
5. Dorundiak, L. M. (2012). Rezultaty doslidzhennia efektyvnosti protsesu pylovlovlennia u tsykloni dlia systemy perekachuvannia derevnykh vidkhodiv. [The results of the study of the efficiency of the cyclone dust collection process for the wood waste pumping system]. Naukovyi visnyk NLTU Ukrainy, 22.14, 152–157 [in Ukrainian].
6. Hazir, E., & Koc, K. H. (2019). Optimization of wood machining parameters in CNC routers: Taguchi orthogonal array based simulated angling algorithm. Maderas: Ciencia y Tecnología, 21, 493–510. DOI: 10.4067/S0718-221X2019005000406.
7. Kminiak, R., Kucerka, M., Kristak, L., & Reh, R. (2021). Granulometric Characterization of Wood Dust Emission from CNC Machining of Natural Wood and Medium Density Fiberboard. Forests, 12(8), 1039–1052. DOI: 10.3390/f12081039.
8. Matrat, M., Radoï, L., Févotte, J., Guida, F., Cénée, S., Cyr, D., Sanchez, M., Menvielle, G., Schmaus, A., Marrer, E., Luce, D., Stücker, I., & ICARE Study Group. (2019). Occupational exposure to wood dust and risk of lung cancer: The ICARE study. Occupational & Environmental Medicine, 76(12), 901–907. DOI: 10.1136/oemed-2019-105802.
9. Nasir, V., & Cool, J. (2020). A review on wood machining: characterization, optimization, and monitoring of the sawing process. Wood Material Science & Engineering, 15(1), 1–16. DOI: 10.1080/17480272.2018.1465465.
10. Ockajová, A., Kucerka, M., Kminiak, R., & Krišt’ák, L’. (2020). Occupational exposure to dust produced when milling thermally modified wood. International Journal of Environmental Research and Public Health, 17(5), 1478–1493. DOI: 10.3390/ijerph17051478.