STORMWATER RUNOFF CONTINUOUS TREATMENT PLANT
The plant allows the continuous treatment of stormwater runoff from impermeable surfaces (with separate tanks up to 9000m2 and 50 l/s flow rate; with one-piece tank from 11000m2 up to 27000m2) used for transit or parking in industrial areas, residential zones and service stations subject to possible pollution from mineral oils, hydrocarbons, sand/grit and inert materials. The stormwater runoff treatment system makes use of the action of a grit and oil separator in continuous operation capable of treating flows of up to 150 l/s. Runoff from impermeable transit areas must be carried to the treatment system. The treatment tanks receive the flow
appertaining to first 5 mm of rain falling over a 15 minute period. For higher flows, the by-pass is activated which sends the excess to the stormwater storage tanks.