PODGORCA AIRPORT RECONSTRUCTION PROJECT THE NEW APPROACH FOR APRON DRAINAGE SYSTEM

Scheme of a new drainage system

Rainfall intensity and duration for return period of 2 years Duration in min Rain intensity ATKINSAEROINZENEJRING l/s/hamm/hl/s/hamm/h

Scheme for left side drainage system

HYDROGRAPH FOR RAIN DURATION 5 min IN LEFT OIL SEPARATOR Q=20 l/s

HYDROGRAPH FOR RAIN DURATION OF 7 min IN THE LEFT OIL SEPARATOR Q=20 l/s

HYDROGRAPH FOR RAIN DURATION OF 10 min IN THE LEFT OIL SEPARATOR Q=20 l/s

VOLUME OF RUNNOF IN OIL SEPARATOR FOR RAINFALL DURATION OF 10 MIN MAX VOLUME DURATION OF FIRST FLUSH (POLLUTED) OF APPR 6 MIN The first wave of polluted water Retention volume to stop first wave app 80 m m3/s

Longitudinal section of detention pond of 80m3, oil separator 20 l/s and by-pass

Plan view of detention pond of 80m 3, oil separator 20 l/s and by-pass - left system

Scheme for the right side drainage system

HYDROGRAPH FOR RAIN DURATION OF 7 min IN THE RIGHT SYSTEM OIL SEPARATOR Q=20 l/s

HYDROGRAPH FOR RAIN DURATION OF 10 min IN THE RIGHT SYSTEM OIL SEPARATOR Q=20 l/s

HYDROGRAPH FOR RAIN DURATION OF 5 min IN THE RIGHT SYSTEM OIL SEPARATOR Q=20 l/s

VOLUME OD RUNNOFF VOLUME IN THE RIGHT SYSTEM OIL SEPARATOR FOR RAIN DURATION OF 10 MIN AND 260m 3, DURATION OF FIRST FLUSH OF APPR 6 MIN AND VOLUME OF THE FIRST FLUSH OF 78m m3/s

COMPARATION ATKINSAEROINŽENJERING OIL SEPARATORSat least 5 objects of the capacity ( )/5 = 225 l/s, or 4 with by-pass capacity of 250 l/s Max 2 capacity of 20l/s Concrete bed of 20 cm 120 m 2, 30 m 3 10 m 2, 2.5 m 3 Excavation600 m m 3 Superstructure, ponds, none60 m 3, 6 tone of reinforcement Equipment2 pumps FLYGT 5 m, 10 l/s and 2 kW, d. c. i. of 2 tones

CONCLUSION Proposed solution of the oil separator installation to be just above the ground instead of large excavation and 5 m depth of covering. Easier approach for oil suction and also silt disposal. Negligible higher expenses due to energy consumption for pollution water pumping.