Ken Hennon from Clean Air Engineering gave a nice presentation at the Cooling Technology Institute Annual Conference about new EPA standards for particulate pollution and their application to cooling tower drift.
When most people think of particulate pollution, the image of black smoke coming off the stack on a diesel engine comes to mind. But, cooling tower drift will soon be considered in that same category. As Ken explained it, when the water in the droplets of tower water that leave the towers as uncontrolled drift evaporate, they leave behind their salts. These salts include hardness from the make up water source, residual water treatment chemicals and any solids that the tower has scrubbed from the air.
These solids that are left behind form particles that will be considered particulate pollution per the EPA standards. For more information visit the link below:
http://www.epa.gov/airtrends/aqtrnd95/pm10.html
This is good information and I would also recommend OSHAcampus.com as they share very good information about hvac and other constrcution related information.
ReplyDelete