Ultrafiltration for water treatment plant, TP 104-25

HSY Helsingin seudun ympäristöpalvelut -kuntayhtymä

Published: Nov 8, 2026

Updated: Nov 8, 2026

Source: Hilma Finland

This tender has been awarded

Awarded to Azelis Finland Oy (0779980-4)

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About This Opportunity

This is a supplies contract in the Research, water and sanitation, health and medical services and trade and industry sectors. Located in Finland, Europe, this opportunity is open to firms and consortiums.

Published through Hilma Finland, a national government procurement portal. Public procurement tenders follow the country's national bidding regulations and may have specific eligibility and documentation requirements for the supply of goods in the Research sector. Supply contracts typically require bidders to demonstrate product compliance with technical specifications, delivery capacity, and relevant certifications. This contract has already been awarded. The information is published for transparency and market intelligence purposes.

Description

Ultrafiltration for water treatment plant, TP 104-25 For research and treatment process development purposes Helsinki Region Environmental Services (later also "client" or "HSY") is in the process of acquiring an ultrafiltration (UF) unit to be retrofitted in an existing sand filter for Pitkäkoski water treatment plant (WTP). Long-term goal for the ultrafiltration pilot is to evaluate ultrafiltration paired with chemical precipitation as a primary natural organic matter (NOM) removal method when purifying cold surface water. Membrane performance and water quality is compared to that of a clarification and sand filtration. Purchased UF process will be preceded by a separate chemical dozing and flocculation unit to ensure effective NOM removal and membrane applicability in variable conditions. Different precipitation chemicals will be used, but the choice of chemicals and applied dose can be discussed with membrane supplier. In principle, the UF unit would be built in one of the existing sand filter pairs: one of the filters will be used for chemical dozing and flocculation, while the other one is reserved for UF units. The main targets in piloting are: - Adequate NOM removal - Act as an effective microbial barrier - Stable turbidity level in permeate from membrane filtration HSY have completed several laboratory scale tests for different UF processes, and the Client has decided to perform a full scale UF pilot based on ceramic submerged membrane filtration. Produced permeate from the ceramic UF unit will be further processed in Pitkäkoski WTP prior to distribution to customers. Pilot process lifetime is expected to be at least 50 years and membranes are assumed to be replaced during the piloting. The ceramic UF treatment could potentially be used in the future to further increase the capacity of Pitkäkoski WTP or as the primary treatment step in a new WTP in the Helsinki Metropolitan area. As the purchased membrane unit will replace part of the existing treatment process and membrane permeate is directed to further treatment, client will oblige actions from process supplier in case warranty clauses are not met., Lot 1: Ultrafiltration for water treatment plant, TP 104-25 For research and treatment process development purposes Helsinki Region Environmental Services (later also "client" or "HSY") is in the process of acquiring an ultrafiltration (UF) unit to be retrofitted in an existing sand filter for Pitkäkoski water treatment plant (WTP). Long-term goal for the ultrafiltration pilot is to evaluate ultrafiltration paired with chemical precipitation as a primary natural organic matter (NOM) removal method when purifying cold surface water. Membrane performance and water quality is compared to that of a clarification and sand filtration. Purchased UF process will be preceded by a separate chemical dozing and flocculation unit to ensure effective NOM removal and membrane applicability in variable conditions. Different precipitation chemicals will be used, but the choice of chemicals and applied dose can be discussed with membrane supplier. In principle, the UF unit would be built in one of the existing sand filter pairs: one of the filters will be used for chemical dozing and flocculation, while the other one is reserved for UF units. The main targets in piloting are: - Adequate NOM removal - Act as an effective microbial barrier - Stable turbidity level in permeate from membrane filtration HSY have completed several laboratory scale tests for different UF processes, and the Client has decided to perform a full scale UF pilot based on ceramic submerged membrane filtration. Produced permeate from the ceramic UF unit will be further processed in Pitkäkoski WTP prior to distribution to customers. Pilot process lifetime is expected to be at least 50 years and membranes are assumed to be replaced during the piloting. The ceramic UF treatment could potentially be used in the future to further increase the capacity of Pitkäkoski WTP or as the primary treatment step in a new WTP in the Helsinki Metropolitan area. As the purchased membrane unit will replace part of the existing treatment process and membrane permeate is directed to further treatment, client will oblige actions from process supplier in case warranty clauses are not met. CPV: 42910000 Organisation: HSY Helsingin seudun ympäristöpalvelut -kuntayhtymä Procedure: neg-w-call

Data provenance

This notice is sourced from Hilma Finland and was originally published on November 8, 2026. Last refreshed today. BidsFactory mirrors official procurement notices and links back to the source for full legal text.

About HSY Helsingin seudun ympäristöpalvelut -kuntayhtymä

HSY Helsingin seudun ympäristöpalvelut -kuntayhtymä has issued 127 procurement notices on BidsFactory, including 6 currently open and 43 awarded contracts. Activity concentrates in Environment & Climate, Construction & Civil Works, and General Supplies & Services. All notices are published for Finland. Notices are distributed via Hilma Finland and TED - Tenders Electronic Daily (EU). Most recent publication: November 6, 2026.

Frequently asked questions about this tender

Is this tender still open?

No — the contract has already been awarded to Azelis Finland Oy (0779980-4). The award notice is archived on BidsFactory for transparency and market intelligence.

Who is the contracting authority?

This notice was issued by HSY Helsingin seudun ympäristöpalvelut -kuntayhtymä in Finland. The authority is responsible for evaluating bids, awarding the contract, and managing performance.

What type of contract is this?

This is a Supplies contract in the Research & Innovation sector. The classification helps bidders match the opportunity to their qualifications and registered scope of supply.

Where will the contract be performed?

The contract is for delivery in Finland. Foreign bidders should review local registration, taxation, and any in-country presence requirements before submitting.

How can I submit a bid?

Visit Hilma Finland to access the full notice, required documents, and submission instructions provided by the contracting authority.