-Water treatment residual (WTR) coated mulches were synthesized for runoff treatment.
-Heavy metals and phosphorus were effectively adsorbed on the active WTR coat.
-The WTR adsorption was a 2nd-order reaction with respect to each pollutant.
- Leaching of hazardous chemicals from spent WTR-coated mulches was insignificant.
-WTR-coated mulches provide a new approach to reuse WTRs (an industrial waste).