---
title: "Supply & Install of Modular Treatment Equipment: Preliminary, Primary Filtration and Fixed Film Biological Systems"
ocid: "ocds-h6vhtk-0671eb"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0671eb"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-0671eb.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-0671eb.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "SEVERN TRENT WATER LIMITED"
published: "2026-07-28"
---

# Supply & Install of Modular Treatment Equipment: Preliminary, Primary Filtration and Fixed Film Biological Systems

Buyer: SEVERN TRENT WATER LIMITED  
Current stage: Tender  
OCID: ocds-h6vhtk-0671eb

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## Summary

This public procurement contracting process, initiated in the planning stage by Severn Trent Water Limited, involves the Supply and Install of Modular Treatment Equipment, specifically Preliminary, Primary Filtration, and Fixed Film Biological Systems. The procurement falls under the industry category of machinery for the treatment of sewage and spans multiple regions across the United Kingdom, including the UKC, UKD, UKE, UKF, UKG, UKH, UKI, UKJ, and UKK regions. Key dates include the procurement process planning initiated in March 2026, with engagement activities scheduled for April 2026. The framework agreement is established under utilities special regime regulations, and Severn Trent Water Limited has outlined a competitive flexible procurement method featuring a multi-stage evaluation process. The anticipated contract period extends from December 2026 to December 2029, with provisions for renewal.

This tender presents significant opportunities for businesses specialising in modular treatment equipment, particularly those capable of designing, supplying, and installing containerised systems for sewage treatment. Companies with experience in providing innovative filtration and biological treatment solutions, along with the capacity for complex civil works, stand to benefit from engaging in this process. The tender offers incentives for small and medium-sized enterprises (SMEs) as the procurement procedure includes a framework agreement without reopening competition. With an emphasis on quality, sustainability, and cost-effectiveness, companies proficient in cutting-edge sewage treatment technologies equipped to meet stringent British/European standards and specific performance criteria will likely thrive in this competitive environment.

## Notice

This tender process is for the provision of Supply & Install of Modular Treatment Equipment: Fixed-Film Biological, Preliminary and Primary Filtration Systems. A summary of the scope across all Lots forming part of this tender is stated below. The Modular Treatment framework will consist of suppliers who have the ability to design, supply & install containerised assets on a flatbed vehicle as a standalone solution either be removed via roll on/roll off functionality or craneage. This framework will also consider semi modular assets which are assembled/installed by the asset supplier and involve greater civil complexity due to these assets requiring partial burying, but typically without the requirement for additional shuttering that's associated with traditional concrete assets. These assets will either be purchased by the Utilities directly and the novated or free issued to the Utilities Capital Construction supply chain partners.

### Lot Information

Modular, Preliminary Treatment Solutions

he Goods to be supplied under this Agreement shall comprise modular inlet screening solutions, with optional grit and/or FOG removal modules, for applications up to 100 l/s. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be containerised, modular, quick to install, durable, and designed to minimise operational and maintenance requirements, while enabling safe operation, monitoring, and integration with existing control and SCADA systems. Where required, solutions may also include grit removal, FOG removal, screenings dewatering, and associated ancillary equipment. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

Modular Primary Filtration Solutions

The Goods to be supplied under this Agreement shall comprise modular primary filtration solutions, using belt or drum filters as an alternative to primary settlement tanks, for applications up to 100 l/s. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be capable of achieving the required suspended solids removal performance, operate with minimal manual intervention, and include all necessary ancillary equipment, controls, sludge handling, monitoring, and SCADA integration to support reliable operation. Depending on site requirements, solutions may also include redundancy, flow balancing, wash water systems, FOG mitigation measures, and long-term service support. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

Modular, Fixed-film Biological Treatment Solutions - Secondary

he Goods to be supplied under this Agreement shall comprise modular fixed-film biological treatment solutions, including Submerged Aerated Filters (SAFs) and Moving Bed Biofilm Reactors (MBBRs), for secondary BOD reduction and secondary or tertiary ammonia removal. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be modular, containerised where appropriate, designed for efficient installation and operation, and include all necessary process equipment, controls, monitoring, sludge management, aeration requirements, and SCADA integration to achieve the required treatment performance across the specified population equivalent ranges. Depending on site requirements, solutions may also include blower systems, dissolved oxygen monitoring, multiple treatment zones, flow balancing, and parallel treatment arrangements. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, sizing criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

Modular, Fixed-film Biological Treatment Solutions - Tertiary & Alternating and non alternating

The Goods to be supplied under this Agreement shall comprise modular fixed-film biological treatment solutions, including Submerged Aerated Filters (SAFs) and Moving Bed Biofilm Reactors (MBBRs), for tertiary ammonia removal applications up to a nominal population equivalent of 15,000 PE. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be modular, containerised where appropriate, designed for efficient installation and operation, and include all necessary process equipment, controls, monitoring, aeration, sludge management, and SCADA integration to achieve the required treatment performance. Depending on site requirements, solutions may also include blower systems, dissolved oxygen monitoring, multiple treatment zones, flow balancing, and parallel treatment arrangements. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, population equivalent sizing bands, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

### Planning Information

We are keen to engage with interested suppliers to help design and tailor a sourcing strategy and procurement process that meets our requirement but is also suitable to the widest group of suppliers. Any future Tender Notice will be published and response to this pre market engagement is optional and does not contribute to any procurement process.
We invite suppliers to complete the following form and we will be in touch:
https://forms.office.com/e/tqnRV70vST

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/070991-2026 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Framework |
| Procurement category | Goods |
| Procurement method | Open |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning, Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 28 Jul 2026 |
| Submission deadline | 21 Aug 2026 |
| Future notice date | 10 Apr 2026 |
| Award date | Not specified |
| Contract period | 14 Dec 2026 - 14 Dec 2029 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £19,372,500 |
| Lots value | £25,800,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Active |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SEVERN TRENT WATER LIMITED |
| Additional buyers | HAFREN DYFRDWY CYFYNGEDIG |
| Locality | COVENTRY |
| Post town | Coventry |
| Postcode | CV1 2LZ |
| Country | Wales |
| ITL 1 | TLL Wales |
| ITL 2 | TLL3 North Wales |
| ITL 3 | TLL34 Flintshire and Wrexham |
| Local authority | Wrexham |
| Electoral ward | Ponciau |
| Westminster constituency | Montgomeryshire and Glyndwr |
| Delivery location | TLC North East (England), TLD North West (England), TLE Yorkshire and The Humber, TLF East Midlands (England), TLG West Midlands (England), TLH East (England), TLI London, TLJ South East (England), TLK South West (England) |

## CPV Codes

### Divisions

- 42 - Industrial machinery

### Codes

- 42996000 - Machinery for the treatment of sewage

## Release History

- 28 Jul 2026 at 07:01 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/070991-2026
- 24 Jul 2026 at 14:32 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/070410-2026
- 23 Mar 2026 at 16:45 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/026472-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/070991-2026
  28th July 2026 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/070410-2026
  24th July 2026 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/026472-2026
  23rd March 2026 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- http://www.severntrent.com
- https://forms.office.com/e/tqnRV70vST
- https://portal.us.bn.cloud.ariba.com/dashboard/public/appext/comsapsbncdiscoveryui#/RfxEvent/preview/1110019802?anId=ANONYMOUS
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0671eb. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-0671eb.json.