Saving Energy and Reducing Water Use at Our Manufacturing Sites
Lincoln, Nebraska. The employees at our manufacturing site in Lincoln, Nebraska, have engineered a number of improvements with more than 25 energy reduction projects – large and small. This has included improvements in the return of steam condensate; insulation; heat recovery from air handling systems; boiler controls and boiler efficiency; optimizing fresh air exchange rates in rooms; replacing conventional motors with more efficient variable frequency drive motors; and installation of more efficient lighting and lighting on demand systems. In 2014 and 2015, they reduced energy by more than 8,340 megawatt hours per year which is equivalent to a reduction of approximately 3,640 tons CO2 equivalent per year.
Durham, North Carolina. Zoetis partnered with a leader in the design and manufacture of light-emitting diodes (LED), to replace all 1,100 light fixtures at our Durham, North Carolina site with high efficiency LED lights. Site energy usage was reduced in 2014 by over 447,000 kilowatt hours per year (equivalent to 330 tons CO2 equivalent per year reduction). Since the LED lighting generated less heat than incandescent lights, the change also reduced energy required to cool the building. Its longer lifespan at five times the longevity of fluorescent lamps also helped reduce maintenance costs and at the same time improved light quality for Zoetis employees.
Catania, Italy. Zoetis employees at our site in Catania, Italy, implemented projects to reduce water use in the process cooling and water purification systems at the site by more than 44,000 cubic meters per year (equivalent of 11.5 million gallons per year). Plant engineers analyzed the quality of individual wasted water streams and identified potential on-site uses for the water. Several site systems operating outside the manufacturing process had water needs which matched the water quality of the waste water. Piping and controls were installed to redirect the wasted water for reuse by these systems. In addition, they achieved lower costs in fresh water use and waste water treatment.