In the pursuit of sustainable water management solutions, the integration of biochar and compost into stormwater treatment systems presents a promising avenue. A recent pilot-scale study delved into this approach, assessing its efficacy in improving water quality and mitigating environmental pollution.

The study focused on Sustainable Drainage Systems (SuDS), specifically bioswales followed by bioretention, enhanced with varying concentrations of wood waste biochar and food waste compost. Results showcased notable improvements in water quality, with the combined application of biochar (2 wt%) and compost (2 wt%) exhibiting superior performance. High removal efficiencies were observed for total phosphorus and major metal species, alongside significant reductions in turbidity and particle-associated pollutants.

Moreover, the co-application of biochar and compost demonstrated moderate immobilization of trace organic contaminants, further bolstering the system’s effectiveness. Enzyme activity analysis indicated enhanced soil health, suggesting improved conditions for microbial communities and potential for increased phyto and bioremediation activities.

The significance of this research lies in its contribution to optimizing SuDS design for efficient stormwater treatment and resilient water management strategies. By addressing a wide range of pollutants and considering diverse rainfall scenarios, the study offers valuable insights into the practical application of biochar and compost amendments in stormwater treatment systems.

Moving forward, these findings serve as a scientific reference for advancing stormwater reclamation technologies, ultimately aiding in the global effort to combat water scarcity and environmental pollution. As the demand for sustainable water management solutions continues to escalate, the integration of biochar and compost stands out as a promising approach with far-reaching implications for water security and ecosystem health.