Small wastewater treatment plant IPP, ITIPP series

STORMWATER RUNOFF TREATMENT PLANTS WITH STORAGE 1.FLOW SPLITTING CHAMBER: carries the collected rainwater from the hardstanding to the storage tank and. when this is full. carries the secondary rainwater directly to the end drain through the by-pass pipe 2.STORAGE TANK: this is sized to contain stormwater runoff amounting to approximately 5 mm of rainfall distributed evenly across the collection surface. A float valve is fitted on the inlet pipe. The presence of a timed pump allows the tank to be emptied at a steady flow rate, with the effluent being carried to the treatment System 48-96 hours after the end of the rainstorm. This period of time allows the suspended solid material to be separated from the waste water. 3.ELECTRIC PANEL: to command the recovery pump. it activâtes start-up of the stormwater recovery pump after an adjustable delay. By law this delay must be between 48 and 96 hours from the end of the rainstorm. 4.TREATMENT SYSTEM: according to the model. this consists of a grit separator and a coalescing filter type oil separator for treatment of the stormwater runoff stored in the tank and recovered by the constant flow rate pump. 5.SAMPLING CHAMBER: to take samples of the waste water at the treatment plant outlet. SPECIFICATIONS TECHNICAL CHARACTERISTICS: The plant includes a flow splitter. a storage System with automatic shut-off valve and timed submersible pump. a grit séparation and oil séparation System sized in accordance with standard UNI-EN858-1 and in compliance with Law Decree 152/06.