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The containment system is equipped with a filtration emission system consisting of a Venturi water washing apparatus in the form of two vessels. A sliding pressure process is selected for the emission system which is mainly composed of a Venturi water washing apparatus.

The Venturi water washing apparatus t is connected to one end of the containment system by a ventilation duct and an isolation valve, and to the other end of the exhaust stack via a line with a restriction orifice.