Zincpot uses in its factory cutting-edge technology that meets the internationally used parameters BAT (Best Available Technology). This technology complies with the highest working environment, safety and environment protection standards valid in EU that are regulated by the Integrated Pollution Prevention and Control (IPPC) directive. Since we use BAT in our factory, we are the only Estonian hot dip galvanization factory to receive an integrated environmental permit integrated environmental permit from Harjumaa Environmental Authority for an unspecified term, which is mandatory for all hot dip galvanization factories that use processing baths with total volume over 30 m³ as of May 1, 2003.
BAT is characterized by:
- Chemical pre-treatment of steel parts in a closed room under negative pressure conditions without connection to sewage system, i.e. the factory does not produce technological water and the HCl compounds are separated from exhaust air via wet scrubber. Permitted level in exhaust air: HCl 2 – 30 mg/Nm³ (in Zincpot 0.0017 mg/Nm³).
- High quality filtration of galvanization process combustion gases. Permitted level in exhaust air: Dust < 5 mg/Nm³ (in Zincpot 0.69 mg/Nm³).
Specific data is based on measurements performed by the Estonian Environmental Research Centre, which is regulated by the Ministry of the Environment, in Paldiski on July 29, 2009. The measuring requirement of Zincpot is stated by the integrated environmental permit. In order to react to speculative claims saying that hazardous heavy metal lead is being used in Zincpot, a measurement of the content of this substance in exhaust air was also performed. The results showed Pb < 1 µg/Nm3, which is less than 1 microgram per cubic meter of air.