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ENVIRONMENT EMISSIONS Reducing emissions using natural solutions VOC’s are the ‘Volatile Organic Compounds’ released into the atmosphere as a result of numerous companies manufacturing processes around the world. In a domestic capacity, we all come into contact with VOC’s regularly, for example; when you open a tin of paint there is an unpleasant smell, this smell is mainly composed of VOC’s. In Rexam’s Cosmetic Closures business, VOC’s are emitted as a result of our varnishing processes. Although there are multiple options for VOC reduction available to any business, many of these require large amounts of energy to run the equipment involved, thus actually increasing energy usage and, as a result, other harmful emissions. At Rexam we use several different methods to treat VOC’s to try to ensure we emit only cleansed air into the atmosphere. One of the most ecologically friendly solutions is the use of Peat Pits to absorb VOC’s prior to release. Peat pits use a bio filtration system for the treatment of any polluting gas emissions. The process and equipment is described and pictured to the right: responsibility <strong>case</strong> study How does it work? Firstly, the air that contains VOC’s is collected using a network of specialised pipes that are placed on the roof to drain the air from the workshop below (see figure 1). The main pipe (figure 2), then carries the polluted air to the washing equipment. The purpose of the washing equipment (figure 3) is to separate any hard particles from the extracted air. The polluted air is then pushed through a peat pit using a ventilator. (Figure 4 shows the 600 m3 peat pit whilst it was in construction prior to the roof being fitted). In the peat there are enzymes that ‘’eat’’ any VOC’s thus destroying them before they can enter into the atmosphere. In 2001, Rexam received an award for this equipment and process, which was the first of this kind (for varnishing plastic parts for cosmetics) to be installed in France. Pictured below: The team responsible for the peat pit project, holding the award presented to them in October 2001. Figure 1 Figure 2 Figure 3 Figure 4
ENVIRONMENT North American can plants on a drive to save water Water usage is an area our North American Beverage Can businesses are successfully addressing to reduce the environmental impacts of their operations. While in production, cans must be washed, to remove the oils and lubricants used in the shaping process, and then rinsed to remove washer chemicals. On average, the washing and rinsing of cans accounts for roughly 80% of our can sites total water usage. To reduce this usage, new rinse risers with high efficiency nozzles have been installed in can washers. These risers clean cans more responsibility <strong>case</strong> study efficiently, meaning our sites purchase less water. The new rinse risers are also half the weight of the old ones, they are easily replaced without the use of tools, and the nozzles are colour coded for easy identification. To date, the new rinse risers have been installed at several of our North American facilities where results seen so far have been fantastic, with monthly reductions of approximately 50% water usage. Roll out will now continue to the remainder of our North American Beverage Can businesses. Commenting on the programme, Al Bohner, a Senior VP at Rexam BCNA said; “This is just another avenue to raise the bar on performance while proactively setting a favourable example in the community.” Results so far have been fantastic, with monthly reductions of approximately 50% WATER
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