Filtration for metals removal from stormwater

S. Clark, P. Johnson, R. Pitt, S. Gill & M. Pratap
Filtration as a method of stormwater treatment was investigated in a 3-year study. Equilibrium and kinetic studies of metals\342\200\231 capture were performed initially on twelve media. The three best performing media: peat-sand mix, compost, and zeolite were then selected for in-depth study. Upflow filters did not clog as easily as downflow, and longer-term performance was better in the upflow column. Metals were retained on the filters during anaerobiosis. Metal retention by the filters was not...
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