Tenders Are Invited For Optimization Of The Holtwick Sewage Treatment Plant - Renovation Of The Inlet Lift Works Screw Pumps

The Municipality Of Rosendahl Operates The Holtwick Sewage Treatment Plant With A Capacity Of 7,600 Pe. Due To The Age Of The Existing Equipment, The Two Worm Pumps Of The Intake Lift Are To Be Replaced. The Replacement Of The Worm Pumps Is To Begin By The Fourth Quarter Of 2023. The Existing Intake Lift Consists Of Two Open Worm Pumps (1X Operating Unit, 1X Reserve Unit), Which Are Operated Alternately. For Reasons Of Hygiene And To Minimize The Risk Of Clogging And Blockages Caused By Branches Or Snowfall, The New Units Are Designed As Closed Tubular Compact Augers. Since In The Past There Has Always Been A Return Flow Of Waste Water Over The Point Of Fall Of The Screw That Is Not In Operation, The Point Of Fall Should Be Raised By 10 - 15 Cm. The Services Essentially Include The Delivery And Installation Of Two New Tubular Compact Screw Pumps. The Sewage Treatment Plant Holtwick Will Be Rebuilt Without Interrupting Operations. Necessary Relocation Work Will Be Mutually Agreed Between The Bidder / Contractor And The Client / Plant Operator In Good Time Before The Start Of The Work. The Buildings Are Emptied And Cleaned By The Client / Plant Operator Before The Dismantling And Assembly Work Begins. Since Changes In Recent Decades Have Not Been Complete Have Been Documented, The Scope Of Services Includes An Allowance In Which All Dimensions Required For Delivery And Assembly Are To Be Determined In Advance. The Existing Objects Of The Old System Are To Be Dismantled And Professionally Disposed Of.