Tenders Are Invited For Modernization Of The Municipal Sewage Treatment Plant In Smardzewo

1. Assembly Works Of A New Tank For Transported Sewage - Size: Internal Diameter 3.0 M - Active Capacity: At Least 20 M3 - Material: Reinforced Concrete Rings Connected With A Gasket; Bottom Circle With The Bottom - As A Monolithic Bottom Of The Tank On The Same Elevation As The Bottom Of The Existing Tank (Next To It) - Connect The Tank At The Bottom With A Pipe Of At Least Dn200 To The Existing Tank; Use A Wedge Gate Valve At The Connection - Distance From The Existing Tank - No More Than 1.0 M; A Shorter Distance Is Allowed - Tank Tightness Test - The Tank Must Cooperate With The Existing Tank On The Principle Of Communicating Vessels And Use The Control System Operating In The Existing Tank - Two Manholes With A Diameter Of At Least 600 Mm And A Ventilation Chimney Must Be Provided In The Reinforced Concrete Cover Of The Tank2. Equipping The Sludge Tank With A Pumping Installation - With A Variable Pumping Level For Removing Water Separated From Excess Sludge, Consisting Of: - A Submersible Pump - Installation Of The Pump In The Tank With The Possibility Of Adjusting Its Submersion - A Davit For Manual Regulation Of Submersion - Enabling Visual Control Of The Pumped Sludge Water In Order To Change The Submergence Of The Pump3. Carrying Out Work To Improve The Operation Of The Treatment Technology By: - ​​Regulating The Operation Of The Recirculation And Excess Sludge Pumps - Optimizing The Process Settings In The Aeration Chamber, Including The Selection Of The Optimal Oxygen Concentration - Setting The Sludge Management Processes - Optimizing The Dosage Of Supplied Sewage After Starting The Additional Supplied Sewage Tank, Which Involves Repairing The Control System By Modifying The Software Enabling Flexible Control Of The Treatment And Sludge Management Processes.