| 原文摘要 | Low impact development (LID) systems are increasingly used to manage stormwater, but they have limited ca-pacity to treatstormwater—a resource to supplement existingwater supply in water-stressed urbanareas. To en-hance their pollutant removal capacity, infiltration-based LID systems can be augmented with natural orengineeredgeomedia that meet the following criteria: they should be economical, readily available, and have ca-pacity to remove a wide range of stormwater pollutants in conditions expected duringintermittent infiltration ofstormwater. Biochar, a carbonaceous porous co-product of waste biomass pyrolysis/gasification, meets all thesecriteria. Biochar can adsorb pollutants, improve water-retention capacity of soil, retain and slowly release nutri-ents for plant uptake, and help sustainmicrobiota in soil and plants atop; all these attributes could help improveremoval of contaminants in stormwater treatment systems. This article discusses contaminant removal mecha-nisms by biochar, summarizes specific biochar properties that enhance targeted contaminants removal fromstormwater, and identifies challenges and opportunities to retrofit biochar in LID to optimize stormwatertreatment |