Toxic to Topsoil
Bremyn Upsdell-Reddekopp
Osler Elementary
Floor Location : 010703

This project analyzes which bio-solid treatments should be implemented in BC. It measures the benefit of each treatment based on five criteria; cost, efficiency, risk of pathogen or heavy metals leakage, risk of other environment impacts, and availability. Treatments analyzed were; fermentation beds, composting, anaerobic digestion, and policy amendment. Composting was the most effective method, as it had low risk of leakage or environmental impact, and was very effective for a relatively low cost. However, anaerobic digestion scored well and had the extra benefit of producing a sustainable energy source, and should be used where funds can pay for it.