Chip Supply Chip Supply TMP Newsprint Machine Newsprint Warehouse Kraft Brown Fibre Kraft Bleach Kraft Processing Kraft Warehouse Shipping Power & Recovery Hog Fuel & Power Boiler Recovery Boiler Recaust & Lime Kiln Environmental Systems - Water Environmental Systems - Landfill

YOU CAN TOUR ANY AREA OF THE MILL BY PLACING YOUR MOUSE OVER THE IMAGE
(ABOVE) THAT YOU WISH TO VISIT.
 


ENVIRONMENTAL SYSTEMS


Howe Sound is proud to be an environmental leader. When we modernized in the early 1990's we installed the best proven environmental systems available.  This technology continues to make Howe Sound a leader in environmental practices.  This part of the tour will show how our environmental technology reduces our emissions to air, water and land.  In fact, Howe Sound Pulp and Paper has the lowest overall emissions in Canada.

AIR

Gases are produced during the cooking of wood chips in the digester (dilute non condensable gases - DNCGs and concentrated non condensable gases - CNCGs). These gases are extremely smelly and the standard practice is to incinerate these NCGs.  The DNCGs are burned in our Power Boiler, while our CNCGs are burned in our Lime Kiln.  Our Power Boiler and our Lime Kiln are equipped with an Electrostatic Precipitator (ESP) to remove particulate.  The ESP utilizes high voltage to create a negatively-charged field through which the dust-laden gas passes.  The particles pick up a negative charge and are drawn out of the gas flow by positively-charged collecting plates.  These plates are periodically rapped by mechanical action to discharge accumulations into a hopper (dry bottom).

In addition, we have two scrubbers to remove chemicals from bleach plant emissions.


What's That Smell Anyway?


That rotten egg smell from some paper mills is sulphur, just like you would experience at a place like the hot springs in Yellowstone Park.  Our mill has installed technology to reduce it - our levels have dropped by 90% since 1990.  Hydrogen sulphide is unique in that the human sense of smell is extremely sensitive to the odour.  Most people can detect this smell at levels as low as 1 part per billion!

 


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