A complete hygiene scrubber system including a venturi scrubber was installed to overcome worsening conditions in the Fertiliser manufacturing plant, as new higher fluoride rocks were used creating higher evolution of fluoride in process streams.
Fluoride emissions in the manufacturing plant are collected with fibreglass hoods and fibreglass ducting. The venturi scrubber removes the particulate and the majority of the fumes. The scrubbed gases are then mixed with the gases from the separate den scrubbing system, and are discharged up a common stack.
The single stack approach has reduced the visibility of the stack plume and has minimised the amount of stack sampling and analysis needed. Conditions in the plant have improved dramatically and the plant air discharge consents are being met.