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The CITY OF WINTERTHUR, DEPARTMENT OF TECHNICAL OPERATIONS, STADTWERK WINTERTHUR, FINANCE AND SERVICES has issued a Tender notice for the procurement of a Delivery of Iron Solution for the Precipitation of Phosphorus on Wwtp in the Switzerland. This Tender notice was published on 17 Nov 2025 and is scheduled to close on 09 Jan 2026, with an estimated Tender value of Refer Document. Interested bidders can access detailed Tender information, eligibility criteria, and complete bidding documents by referencing TOT Ref No. 130292630, while the tender notice number is 759339-2025 and Registering on the platform.
Procurement Summary
Country: Switzerland
Summary: Delivery of Iron Solution for the Precipitation of Phosphorus on Wwtp
Deadline: 09 Jan 2026
Posting Date: 17 Nov 2025
Other Information
Notice Type: Tender
TOT Ref.No.: 130292630
Document Ref. No.: 759339-2025
Financier: Self Financed
Purchaser Ownership: Public
Tender Value: Refer Document
Purchaser's Detail
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Login to see detailsTender Details
The wastewater treatment plant (WWTP) processes wastewater from the city of Winterthur and various municipalities based on contractual regulations. Today, the wastewater of more than 140, 000 people and businesses is cleaned in four process stages and then discharged into the Toess.
In addition to the biological and mechanical cleaning, the wastewater is also chemically cleaned. One of the chemical processes - iron precipitation of phosphorus from wastewater - is used to reduce the amounts of phosphate in wastewater. The requirement for molar iron is approximately 160 tons.
Supply of iron solution for the precipitation of Phosphorus on ARA
Today, the wastewater of more than 140, 000 people and businesses is cleaned in four process stages and then discharged into the Toess.
Next to In addition to biological and mechanical cleaning, the wastewater is also chemically cleaned. One of the chemical processes - iron precipitation of phosphorus from wastewater - is used to reduce the amounts of phosphate in wastewater. The requirement for molar iron is approximately 160 tons.
Doc Title: Delivery of Iron solution for the precipitation of phosphorus on ARA
Contract Type: supplies
Document Type: Contract Notice
Contract Type: supplies
Doc Title: Delivery of iron solution for the precipitation of phosphorus on WWTP
Dispatch Date: 2025-11-14
Publish Date: 2025-11-17
Submission Date: 2026-01-09
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