Lieferung von Eisen Lösung zur Fällung von Phosphor auf ARA

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Location: Canton ZH
Procuring office: Stadt Winterthur, Departement Technische Betriebe Stadtwerk Winterthur, Finanzen und Dienste
Requesting office: Stadt Winterthur, Departement Technische Betriebe Stadtwerk Winterthur, Wärme und Entsorgung

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Awarded

According to the simap publication. Values that are not given are deliberately missing here.

Awarded to

As published on simap.ch: winner and price (with or without VAT, as stated).

Award of 17.06.20261 bid
- Aregger Chemie AG, OensingenCHF 1’609’220.00 incl. VAT

Awards of this contracting authority

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What is being procured?

Scope of work

Die Abwasserreinigungsanlage (ARA) verarbeitet das Abwasser der Stadt Winterthur und verschiedener Gemeinden aufgrund vertraglicher Regelungen. Heute wir das Abwasser von mehr als 140'000 Menschen plus Gewerbe in vier Verfahrensstufen gereinigt und danach in die Töss abgeleitet.

Neben der biologischen und mechanischen Reinigung wird das Abwasser auch chemisch gereinigt. Eines der chemischen Verfahren – die Eisenfällung von Phosphor aus Abwasser – dient dazu, die Phosphatmengen im Abwasser zu reduzieren. Der Bedarf an molares Eisen beträgt ca. 160 Tonnen.

Key facts, codes and options

Type of contract: Supply
Type of supply: Purchase
Procedure: Open procedure
Trades: Not evident from the available publication data.
CPV: CPV 24000000 – Chemical products
Options: Not evident from the available publication data.
Variants: Not evident from the available publication data.
Partial offers: Not evident from the available publication data.

TEXFY assessment: Products, installations, quantities, technical specifications and exclusions are not structured fields of the publication. TEXFY does not analyse the free text on them: check the original text and the tender documents.

Market data for this service

From awards published on simap.ch, without rankings and without rating companies.

Comparable awards

Wastewater treatment plants, canton of Zurich, last 12 months

45 awards, bids (median): 3.

Awards: Wastewater treatment plants

Range of award prices

Wastewater treatment plants, canton of Zurich, last 12 months

CHF 185’23410 % of the prices were lower

CHF 652’539Median: half were lower

CHF 5’935’76310 % of the prices were higher

8 out of 10 award prices were between CHF 185’234 and CHF 5’935’763.

From 44 published award prices in CHF from 02.12.2025 to 02.11.2026, with or without VAT, as published. A single contract can differ widely.

Official source

Go to the official tender

simap project number: 26975
Publication number: 26975-02
Covered by international agreements: Yes
TED (EU): Publication on ted.europa.eu (opens in a new tab)

Checked against simap: 10.11.2026, 18:02

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