Waste and Recycling
The glass manufacturing process produces very little waste material. All trimmed glass is recycled back into the melting process. PVB is used to manufacture laminated glass. PVB edge trims are returned to PVB suppliers to be recycled in their manufacturing processes. Our remaining waste to landfill consists mainly of waste glass, reject batch, general waste and glass-grinding sludge. Since 2007, the NSG Group has succeeded in reducing the waste sent to landfill by 50 percent and has exceeded a FY18 Sustainability target to reduce this environmental impact again by 20 percent on 2013.
We are actively seeking recycling partners to divert this waste from landfill and provide raw material for concrete products and other aggregates.
Float rejected raw material
In 2016, we continued to seek recycling opportunities for glass dust collected by the pollution abatement equipment and rejected batch – occasional off-specification raw material that often cannot be blended. Automated process monitoring and control systems are being implemented to proactively reduce the number of reject batches at our Rossford plant and our Ottawa plant is constructing a new batch plant to reduce batch spillage.
The sites producing the highest volumes of waste glass reviewed their cullet segregation and recycling practices to find ways to increase the amount of cullet sent for recycling in float plants and to improve recycling. The Sungai Buloh plant in Malaysia implemented recycling of all printed cullet and found a recycling partner for laminated waste glass. All sites are reviewing recycling opportunities for contaminated cullet and glass dust.
Focus and support has been applied to the highest volume producers to further improve general waste segregation and procurement have been actively involved in finding local recycling partners.
Automotive glazing ingredients
In Automotive, all supplied glazing parts and their materials are registered in the global IMDS (International Material Data System) to ensure we have complete visibility of ingredients, confirm material compliance and to identify opportunities for recycling. This data is shared with our Automotive customers, to support their own material compliance and recycling efforts.
PVB is used to manufacture laminated glass. PVB edge trims are returned to PVB suppliers to be recycled in their manufacturing processes. In 2016, around 2,000 tonnes of PVB trim was returned to our suppliers or other recyclers to be reused.