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A methodology and processes for assessment of the compliance of existing wood-based panel production plants with bat requirements

Hroncová Emília, Ladomerský Juraj, Bohers Anna

Drewno : prace naukowe, doniesienia, komunikaty

2019

vol. 62, nr 203

117--129

All producers of wood-based materials should know to what extent their facility is in compliance with BAT (Best Available Techniques) requirements (Reference Document for the Production of Wood-based Panels, 2016). This paper presents a methodology with optimized procedures to evaluate the compliance of a facility with BAT requirements, verified using the example of an existing wood-based panel production plant. Model production of particleboard consumes 500,000 tonnes of wood (actual weight – LUTRO) annually; the largest shares are those of coniferous pulpwood with nearly 150,000 tonnes, sawdust with around 110,000 tonnes, and others. Approximately 400,000 m3 of raw particleboard is produced per year, of which about half is laminated. The company manufactures annually almost 22 million m2 of impregnated foil. There are 34 points at the plant where air emissions occur. During particleboard production, 27 types of hazardous waste and nine kinds of other waste are generated. The article is a brief overview of the subject matter and the results of research. The methodology comprises a set of theoretical analyses, results of controls on site, analyses and measurements, which are processed in 16 steps. In this article, we report the results of comparisons of the parameters of the monitored plant with the parameters of the best available technology. In the processes of production, drying and shredding of chips, the critical locations, or most demanding in terms of meeting the BAT requirements, are sawdust storage or sawdust handling, and the chip dryer. The drying of chips is the main source of air pollution and a potential source of odour. A wet electrostatic precipitator was implemented to minimize emissions from the dryer. Authorized emission measurement indicates an average PM value of 3.57 mg/m3 (with 17% O2), against a current emission limit of 20 mg/m3. The result of authorized measurement of TOC is 49 mg/m3, while the current emission limit is 300 mg/m3. The real values of the formaldehyde concentration measurements are low, below 0.76 mg/m3. The current emission limit for the sum of concentrations of formaldehyde, acetaldehyde, phenol and formic acid is 25 mg/m3. Thorough environmental management analysis of the compliance of the existing particleboard production plant has a positive impact on several environmental and economic solutions. Moreover, a series of measures and communication with competent environmental protection authorities are proposed.