One of the biggest questions in agriculture is how to recycle waste. Whether it's drip tape, mulch film, nursery pots, or growing media, each product has been challenged in finding a new life after being used by growers. The average recycling rate in the US is just around 30% according to the EPA, this includes traditionally recycled materials, residential consumer grade materials such as polyethylene terephthalate “plastic bottles” and cardboard. Because of these infrastructure limitations, agriculture products have an integration challenge with recycling. This is especially true for materials like stone wool that are already distinct in cultivation environments.
To answer this challenge, Grodan has been in collaboration with the leading agricultural recycler in Canada to provide an automated and advanced stone wool recycling option for growers throughout the province of Ontario. Grodan and Walker Industries have worked together the past five years to help bring an innovative solution to the marketplace.
At Walker’s Alltreat Farms facility, they have developed an automated processing line capable of removing plastic packaging, crushing stone wool blocks and slabs, and decontaminating the material of viruses, bacteria and other residues. Together, we have processed and recycled 10,000 tons of stone wool through Walker Industries’ facilities across Ontario. The end product: a high-grade potting mix sold to retailers for personal and commercial use.