1. 1 Cost-Effective Use of Sustainable Cementitious Materials as Reactive Filter Media (Phase I) Xianming Shi/Washington State University

2. 2 Background http://crushconqld.com.au/  Chloride pollution due to deicer use is a significant source of water quality impairment  Research is much needed to greatly advance our understanding in stormwater treatment by low-cost engineered sorbents  The fine fraction produced by crushing concrete demolition waste is significantly under- utilized.

3. 3 Project Scope  Objectives: (1) evaluate the effectiveness of crushed fines from recycled concrete (CFRCs) followed by nanoclay-modified cement paste powder (NMCPP) as reactive filter media to treat synthetic wastewater with high levels of chlorides and typical levels of total P, total nitrogen and metals; (2) unravel the mechanisms underlying contaminant removal by these engineered sorbents.