Technical data

Performance data

 

Capacity:
each
40.000 inhabitants equivalent
30% popolation
45% From turism
25% From industry
Loads: 1.500 kg BOD5/d
2.500 COD/d
225 kg Ntot/d
51 kg Ptot/d
Sewage: Daily quality of sewage 5.000 m³/d
Dry weather flow 215 l/s
Wet weather flow 354 l/s
Quality of sludge: Row 182m³/d
1.500 kg/d dried matter
After primary sludge treatment 30 m³/d
After sludge dewatering 5 m³/d
Total effective volume: mechanical - biological treatment 10.870 m³
Sludge treatment 1.760 m³
Total effective volume:
31.000 m³

Technical data







Emergency screening plant: 1 bar-screen 
Bar spacing 3 mm
Screening plant: 2-line
2 bar-screen, 
Bar spacing: 6 mm; Qmas=1.275 m3/h
by 1 screenings wash presses integrated 
and bagging deceive
Aerated grit chamber: 2-line; each line
Grit chamber  Cross section 4,51 m² 
Volume 75 m³
T = 6 min by Qt
Grit washer Qm= 20 l/s
Preliminary clarifier: 1 line,
Diameter D = 8,00 m
Water depht 2,50 m
V = 460 m³…….t = 0,59 h by Qt
sludge scraper
Biological basin: 2-line, each Line
Water depth T = 5,50 m
Aerob basin 1 basin = 600 m³
Anox basin 1 basin (Denitrification) = 600 m³
Aerob 3 basins (Nitrification) = 1.800 m³
6 x 180 pieces membrane diffusers 
Volume total:  Aerob basin 1.200 m³  
Denitrification 1.200 m³ 
Nitrification 3.600 m³
Total  A + VD + VN = 6.000 m³
2 Horizontal agitator 
Recirculation pumps 2 x Q = 320 l/s
3 compressors, each: 2.400 Nm³/h, 75 kW
Final clarifier:

2 basins
Circular basin D = 30 m
Water depht  4,05 m; V = 2 x 2.130 m³
sludge scraper

Phosphote precipitation: Simultaneous precipitation
Quantity of row sludge: Row sludge 182 m³/d by.500 kg TS/d
and 30 m³/d after primary
sludge pretreatment
Pre-thickeners: 2 pieces
Diameter 7,24 m; Volume = 2 x 140 m³
Rabble rakes, sludge water separation
Secondary sludge pretreatment: Screencloth, Conditioning by 
Polyetectrolytes Q = 30 m³/h
Strainpress:
Q = 5m³/o
 
Digestion chambers: 1 piece
Truncated cone: 
D1 = 13,90 m; D2 = 2,50 m; H = 18,00 m
Usable volume = 1.200 m³; Digestion time 60 days
Circulation by biogas + pumps
Post thickeners: 2 piedes
Diameter = 7,24 m; Volume = 2 x 140 m³
Rabble rakes, sludge water separation
Gasometer: Pressure tank 25 mbar  
Usable volume 270 m³; H = rd. 8,0 m
Gas flare plant: Capacity = 120 m³/h
Gas compressor station: 1 radial compressor
Sludge dewatering: 1 chamber filter press, Conditioning by Polyelectrolytes Q = 20 m³/h
Sludge storage: Area 100 m²
loaded by screw conveyor
Liquified gas installation: Tank V = 5 m³ by evaporator station
Ventilation system: Chemical area treatment scrubber + biofilter
From sludge treatment: 15.000 m³/h
Heating system plant: Heating system plant by 1 boiler plants each 411 kW thermal
capacity by switching automatically for methane gas or biogas
Gas engine plant: 2 pieces each:
Ptot = 163 kW; Pel = 55 kW; Pt = 90 kW
for propane and biogas 
Deep well – industrial water: 2 pieces of pumps, each 20 l/s

Technical data sewerage system

 

Catchment area: 390 km²
Lenght: 14,94 km
Diameter: 250 mm – 900 mm
Material: AZ, STB, PVC, GFK
Quantity drains: 260
Quantity measuring stations: 5
Quantity Pump stationes: 0

Municipalities

Catchment area: 390 km²
Lenght Hauptsammler: 14,94 km


ara_wasserfeld_map_it.gif