Tenders Are Invited For Drinking-Water Treatment Plant Construction Work – New Construction Of The Oldenburg ... in Germany

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Drinking-Water Treatment Plant Construction Work – New Construction Of The Oldenburg-Alexandersfeld Waterworks. Construction Work To Be Awarded: The Subject Of This Award Procedure Is The Following Construction Work: Lot 1: Main Construction Work Including Interior Fittings And Plumbing. Further Details On Lot 1 (Specification Of Services) Will Be Published In The Negotiation Process. The Following Additional Lots Are Not The Subject Of This Award Procedure And Will Be Awarded At A Later Date: - Lot 2: Process Engineering - Lot 3: Electrical Engineering Planning Status Of Lot 1: Only The Planning Status Of Lot 1 In Question Is Briefly Described Below. Location And Overview Plan: The Overview Plan Is The Location Of The Existing Alexandersfeld Waterworks Including Pure Water Chambers And Settling Tanks As An Overview Plan And Will Be Published In The Negotiation Process. Planning The Drinking Water Treatment Plant (Twa): As Part Of The New Construction Of The Drinking Water Treatment Plant (Twa), An Increase In Capacity From 300 To 550 M³/H Is Planned Without Fundamentally Changing The Treatment Technology. As In The Existing System, A Two-Stage, Conventional Treatment Using Depth Filters Is Planned, But With Corresponding Optimizations And Redundancies Regarding Peripheral And Intermediate Systems. The De-Iron Removal In The First Filter Stage Of The New Twa Is Carried Out Using Four Steel Filters After Oxygen Dosing Through Strong Water, The De-Manganese Removal In The Second Filter Stage Takes Place In Three Concrete Filters After Intermediate Deacidification And Aeration. Finally, The Ph Value Of The Drinking Water Is Adjusted Using Intensive Physical Aeration. Overall, 2 Out Of 3 Streets Or 3 Out Of 4 Iron Removal Filters Can Temporarily Cover The Average Treatment Requirement. Preparatory Measures For Construction: The Construction Of The Excavation Pit For The New Building Does Not Require Any Preparatory Measures Such As Line Enclosures Or Bypass Lines. The Position Of The Building Was Chosen So That There Are No Collision Points With The Existing Pipes Of The Alexandersfeld Waterworks, Which Will Continue To Operate Continuously Throughout The Construction Period. Subsoil: According To The Geotechnical Report Prepared (Subsoil Report Dated February 27, 2026), Stable, Rock-Free Subsoils Are To Be Expected, Which Do Not Suggest Any Special Features For The Foundation And Allow A Sloped Excavation Pit Design. The Subsoil Report Is Shared In The Negotiation Process.

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