Technical data Sompunt

Dimensioning of the plant:
Capacity:

58.000 inhabitants equivalent
each 10% population
80% from tourism
10% from industry
Loads: 2.955 kg BOD5/d
3.905 COD/d
446 kg Ntot/d
150 kg Ptot/d
Sewage flow: Daily quantity of sewage 5.000 m³/d
Dry weather flow 56 l/s
Wet weather flow 300 l/s
Quantity of sludge: Row sludge: 27 m³/d
1.300 kg/d dried matter
After primary sludge treatment: 30 m³/d
After sludge dewatering: 5 m³/d
total basin-use-volume: Meccanical – biological treatment 9860 m³
Sludge treatment 1.080 m³
total enclosed area: 21.207 m³

 

Technical data

Sewerage system

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Catchment area: 109 km²
Length: 5,16 km
Diameter: 300 mm – 400 mm
Materiale: PEHD
Quantity manholes: 114
Quantity measuring station: 2
Quantity pump station: 5

The main collector was renovated 2014/15

Renovation of the main collector in the Badia Valley

Technical equipment

Emergency screening plant:

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1 bar-screen, Bar spacing 3 mm

Screening plant:

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2 steep grate
Bar spacing 6 mm, Qm = 1.008 m³/h
by 1 screenings wash presses integrated and bagging decive

Aerated grit chamber:

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2-line
Grit chamber: Cross section 2x 11,50 m², Volume 2x 270 m³, T = 65 min by Qt
Grit washer Qm = 12 l/s

Preliminary clarifier:

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4-line
Wide 5,0 m; Lenght 29,60 m
Wather depht = 2,40 m
V = 4x 380 m³…….t = 3,0 h by Qt,
longitudinal flowed, sludge scrapers

Biological basin:

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4-line, each line
Wide 4,60 m
Lenght 38,00 m
Water depht = 5,00 m
4x 242 pieces plate aerator
Volume total 4x 800 = 3.600 m³
Recirculation sludge,
Recirculation pumps 14x Q = 25 l/s
4 compressors
3 to 1.530 Nm³/h, 37 kW
1 to 981 Nm³/h, 30 kW

Final clarifier:

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4-basins
Lenght 9,70 m; wide 40,00 m
Water depht = 3,20 m
V = 4x 1.150 m³…….t = 3,0 h by Qt
Longitudinal flowed, chain&flight scrapers

Phosphate precipitation:

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Simultaneous precipitation

Quantity of row sludge:

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Row sludge 27 m³/d with 1.300 kg TS/d and 30 m³/d

Pre-thickeners:

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1 pieces
Diameter 7,00 m; volume = 1x 150 m³
Rabble rakes, sludge water separation

Secondary sludge pretreatment:

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Screencloth, conditioning by
polyetectrolytes Q = 15 m³/h

Digestion chambre:

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2 piece
Cylindrical tank
D1 = 7,00 m; D2 = 1,30 m; H = 13,40 m
Usable volume = 2 x 390 m³;
digestion time 30 days
Circulation by pumps

Post thickeners:

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1 piece
Diameter = 7,00 m; Volume = 1x 150 m³
rabble rakes

Gasometer:

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Usable volume 500 m³;
H = rd. 8,0 m, D = 10,00 m

Gas flare plant:

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Capacity = 600 m³/h

Sludge dewatering:

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1 screw press
Conditioning by polyetectrolytes
Q = 3 – 5 m³/h

Sludge storage:

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Area: 4x 4,40 m x 9,40 m=165 m²;
volume: 4x 25 m³ = 100 m³

Ventilation system:

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Chemical area treatment (scrubber) from meccanical and sludge treatment: 15.000 m³/h

Heating system plant:

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Heating boiler system consisting of 1 piece heating boiler with 165 kW rated output with
Automatic switchover for methane gas and sewage gas operation

Gas engine plant:

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1 piece:
Ptot = 170 kW; Pel = 60 kW; Pth = 110 kW
1 piece:
Ptot = 192 kW; Pel = 80 kW; Pth = 112 kW

Deep well – industrial water:

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2 pieces of pumps, each 4,45 l/s and 6,12 l/s