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Waste Management & Research, Vol. 19, No. 2, 108-114 (2001)

Airborne bio-aerosols and noise in a dry waste treatment plant in Pietarsaari, Finland

Outi K. Tolvanen

Department of Biological and Environmental Science, University of Jyvaskyla, Jyvaskyla, Finland.

Ewapower Ltd in Pietarsaari, Finland produces pellets from paper and plastic waste for burning. During 1998 and 1999, several measurements were made to determine the dust, particle, microbe and endotoxin concentrations, and also the noise level in the hall where the waste is received and pre-crushed. The noise level exceeded the Finnish recommended level of 85 dBA. The dust and the particle concentrations were low, but the microbe concentrations, especially in the summer and in the autumn, were at a level which may be harmful to health. The total concentration of microbes (both dead and alive) was high - approximately 4.8 million particles m-3. The concentrations of endotoxins was high in summer and in autumn, from 340 to 1000 ng m-3 and exceeded recommended values. In the winter, the concentration of the endotoxin was lower, ranging between 4.7 and 33 ng m-3.

Key Words: dry waste; microbes; endotoxin; dust; noise; refuse derived fuel


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