Technical data Tobl

Dimensioning of the plant:
Capacity:

150.000 inhabitants equivalent,
therefrom 33% popolation
47% from tourism
22% from tourism
Loads: 27.800 kg BOD5/d
12.000 COD/d
1.560 kg Ntot/d
390 kg Ptot/d
Sewage flow: Daily quantity of sewage15.000 m³/d
Dry weather flow 570 l/s
Wet weather flow 1.140 l/s
Quantity of sludge: Row sludge: 1.000 m³/d
7.000 kg/d dried matter
After primary sludge treatment: 150 m³/d
After sludge dewatering: 20 m³/d
Total effective volume: meccanical – biological treatment 38.440 m³
Sludge treatment 5.860 m³
Total enclosed area:

Gallerys: 200.000 m³
TRA + TRV: 5.815 m³
Service building: 12.550 m³

Technical data

Sewerage system

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Catchment area: 1.176 km²
Lenght: Hauptsammler: 78,32 km
Diameter: 200 mm – 1.200 mm
Material: SB, GFK, SZ, PVC
Quantity manholes: 1.147
Quantity measuring stations: 14
Quantity Pump stationes: 0

Technical equipment

Emergency screening plant:

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3 bar-screen
Bar spacing 3 mm

Screening plant:

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2 bar-screen, wide 1.200 mm
Bar spacing: 15 mm by 2 screenings with wash presses integrated and bagging decive

Skip-raked fine bar screen:

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2 Aqua - Guard screens, wide 1.500 mm
Bar spacing: 6 mm by 2 screenings
wash presses integrated and bagging decive

Aerated grit chamber:

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2-line; each line
Grit chamber cross section 6,50 m²
Volume 200 m³; T = 12 min by Qt
Grit washer Qm= 20 l/s

Preliminary clarifier:

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4-line, each line
Wide 7,6 m; Lenght 13,50 m
Water depht 2,75 m
V=260 m³; t = 0,23 h by Qt
Transverse flowed, sludge scrapers

Biological basin:

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4-line, each line
Denitrification basin
1 basin = 3.250 m³
Nitrification basin = 6.350 m³
Number of slabs-Messner: 92 per basin
Number of slabs-Messner: 156 per basin by
intermittend operation
Volume - Denitrification 9.750 m³
Volume - Nitrification 19.050 m³
Volume - Total VN + VD = 28.800 m³
3x 5 Horizontal agitator

Recirculation pumps 12x Q = 140 l/s

Blowers:

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2 compressors, each 5.000 Nm³/h, 132 kW
2 compressors, each 2.500 Nm³/h, 70 kW

Deammonification:

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1 basin batch treatment = 1.514 m³
1 surnatant water accumulation = 1.400 m³
4 horizontal agitator
1 compressor, 1750 Nm³/h
274 kg NH4-N/d

Final clarifier:

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8-line, each line
Lenght / Wide= 45/7,6 m
Water depht 4,50 m; V = 2x 1.400 m³
Longitudinal flowed, chain&flight scrapers

Phosphate Precipitation:

+

Simultaneous precipitation
Lime milk dissolving station for regulation pH-value in biological basin

Quantity of row sludge:

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Row sludge 1.000 m³/d by 7.000 kg TS/d and
150 m³/d after primary sludge pretreatment

Pre-thickeners:

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4 pieces
4,9 m x 4,9 m; Volume 4x 90 = 360 m³
Rabble rakes, sludge water separation

Secondary sludge pretreatment:

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Screencloth: Q = 36 m³/h
Conditioning by polyetectrolytes

Strainpress:

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Strainpress: Q = 20 m³/h

Digestion chambers:

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2 pieces
Cylindrical tank D = 14,00 m; H = 25,00 m
Usable vol. = 1.800 m³; digestion time 30 day
Circulation by biogas + pumps

Post thickeners:

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2 pieces
Volume 2x 500 = 1.000 m³

CO-substrates tank:

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Volume: 7,5m x 7,5m x 8,9m= 500 m³

Gasometer:

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Cylindrical enclosure in steel construction
Ring membrane gas accumulator; 40 mbar
Usable volume: 1.500 m³; H = ca. 15,0 m

Gas flare plant:

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Capacity = 150 m³/h

Sludge dewatering:

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3 screw press: Q = 3 - 5 m³/h
Conditioning by polyetectrolytes

Sludge storage:

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tank: 80 m³ loaded by screw conveyor

Ventilation system:

+

Biofilter for exhaust air:
Q = 28.000 m³/h, Area: 320 m² V = 800 m³

Gas engine plant:

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3 pieces each
Ptot = 420 kW; Pel = 140 kW;
Pth = 233 kW for methangas und biogas
1 piece each Ptot = 743 kW; Pel = 330 kW;
Pth = 413 kW for biogas

Treatment of industrial water:

+

Sand filter and UV-system: 20 l/s

Sludge drying plant (strip drier):

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Capacity evaporation: 2 Tons H2O/h
EWbio = 430.000
24.000 Tons/a

Thermal waste recycling plant:

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Pyrolysis revolving drum
Capacity: 550 kg/h pellets from the drying plant
Dry flue gas cleaning