How do Hydro-Cartridges® work?
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In a rainstorm a mix of water, solids and hydrocarbons begins to flow into the
filter, this slurry travels down the central funnel where the hydrocarbons tend
to float and separate to be captured by the absorbent pad at the surface.
Solids, silt, heavy metals and other debris continue to flow with the water to
the bottom of the filter, where the flow slows down, they precipitate and
remain. Water then rises on both sides of the funnel until spilling over into
the drainage structure.
Spill containment capacity
Since the Hydro-Cartridges® system works full of water it retains a spill in the
central funnel, even without absorbent, where it can be easily recovered. This
spill containment capability is exclusive to the Hydro-Cartridges® storm drain
filtration system, and can be as much as 20 gallons. Capacity is dependent on