THE NEW APPROACH FOR APRON + PLATFORM DRAINAGE SYSTEM /

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Presentation transcript:

THE NEW APPROACH FOR APRON + PLATFORM DRAINAGE SYSTEM / PODGORCA AIRPORT RECONSTRUCTION PROJECT/ PROJEKAT REKONSTRUKCIJE NA AERODROMU PODGORICA THE NEW APPROACH FOR APRON + PLATFORM DRAINAGE SYSTEM / MODERNO REŠENJE ZA KIŠNE VODE NA AERODROMU J. Despotovic et al. 2008.

Schematic view of a new drainage system at the platform and apron at the Podgorica Airport / Novi sistem za kanalisane kišne vode sa platforme i rulne staze na Aerodromu u Podgorici

ПРОЈЕКАТ РЕКОНСТРУКЦИЈЕ И ДОГРАДЊЕ НА АЕРОДРОМУ ПОДГОРИЦА Површина за каналисање и пречишћавање је око 1 ха. У Подгорици типичне јаке кише: 5 г.- 5 min.- 140 mm/h. Методологија “првог таласа” загађења: “30-80” – 30 % запремине отицаја - 80% укупног загађења. Први талас се захвата ретензионим басенима од 80 м3 и таложницима за смањење капацитета сепаратора уља. Пречишћени први талас и преостали чисти отицај се сабирају у ретензији и инфилтрирају у околно тло. Ретензија у зеленом појасу између рулне стазе и платформе запремине 800 m3. Решење је оптимизовано на бази основног, а јефтиније за око 500.000 € са знатно повећаном ефикасношћу. Три године у функцији поуздано и за врло јаке кише.

Rainfall intensity for given durations for return period of 2 years / Intenzitet kiše za data trajanja i povratni period od 2 godine Duration in min Rain intensity ATKINS AEROINZENEJRING   l/s/ha mm/h 5 361 130 267  96 6 330 118 7 300 108 8 280 100 9 265 95 10 251 90 250 20 196 70.5 30 158 57

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 0.49 m3/s The first wave of polluted water Retention volume to stop first wave app 80 m3

Запремина ретензионог базена за кишу 10 мин и први талас загађења за првих 6 мин. 0.49 m3/s Први талас – први део хидрограма Запремина ретензије од око 80 m3 за први талас.

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

Plan view of detention pond of 80m3, 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 260m3, DURATION OF FIRST FLUSH OF APPR 6 MIN AND VOLUME OF THE FIRST FLUSH OF 78m3 0.45 m3/s

COMPARATION ATKINS AEROINŽENJERING OIL SEPARATORS at least 5 objects of the capacity (660+590)/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 m2, 30 m3 10 m2, 2.5 m3 Excavation 600 m3 440 m3 Superstructure, ponds, none 60 m3, 6 tone of reinforcement Equipment 2 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.