UZOS South-West Wastewater Treatment Plant, St. Petersburg, Russia
Key Data:
Average Flow Capacity
330,000m³/d
Population Served
720,000
Primary Treatment
Screening, grit removal and primary sedimentation
Secondary Treatment
Biological nutrient removal for BOD-reduction; PDN-process
Tertiary Treatment
UV-disinfection
Sludge Treatment
Thickened biosludge mixed with raw sludge; dewatered by centrifuge and then incinerated
Sludge Incinerator Design Capacity
68t/d (dry solid)
Suspended Solids
Reduced by 20,000t
Total Phosphorus
Reduced by 500t
Total Nitrogen
Reduced by 2,250t
BOD
Reduced by 20,000t
Heavy Metal Salts
Reduced by 40% to 60%
Discharge from Plant to the Outlet Chamber
Underground, 2 x DN 2000 concrete gravity lines, 4,132m total length
Discharge from the Outlet Chamber to the Sea
Submerged, 2 x DN 2000 steel lines, 4,960m total length
Contract Type
Turnkey, in four packages (1 x lump sum, 3 x management / procurement)
Construction Time
31 months
Completion Project Cost
€200m
Sludge Incineration Plant
€24m (from European Commission)
Sewage Collection System
€15m (from St. Petersburg city budget)
Project Timeline:
Initial Construction Began
1987
Construction Paused
1995
Financial Agreement Signed
December 2002
Current Construction Commenced
21 March 2003
Sludge Incineration Plant Construction Began
2004
Completion
September 2005
Duration of Operation and Maintenance Contract
12 years
Key Players:
Project Sponsor
City of St Petersburg
Client
Nordvod - special purpose, limited liability company; NCC / Skanska / YIT consortium (41%), Vodokanal (41%); NEFCO (18%)
Main Contractor
SWTP Construction (YIT, Skanska East Europe and NCC consortium)
General Contractor
Bamag GmbH & Co, Germany
Operators
Ecovod
Architects
Vesa Ekholm and Antero Syrjänen
Structural Design
Insinööritoimisto Vahanen
Mechanical, Site Works and Process Design
Plancenter
Electronics, Control and Automation Design
Ettelplan Oy
Main Designer
SUE Lengiproinzhproect
Funding
European Bank for Reconstruction and Development; Nordic Investment Bank; European Investment Bank; Northern Dimension Environmental Partnership; Finnish Ministry of the Environment; Nordic Environmen
Swedish International Development Agency, Finnfund, Swedfund
