Source: https://tendernation.io/opportunities/01a13ca1-f7bb-715d-bd04-e587a7bcf090/ynysarwed-mine-water-treatment-scheme-upgrade-to-high-density-sludge-treatment-p awarded GB restricted procedure Suitable for SMEs # Ynysarwed Mine Water Treatment Scheme upgrade to High Density Sludge Treatment Plant Design and Build [The Coal Authority](https://tendernation.io/buyers/the-coal-authority) Estimated value £4,688,222 Published 28 Feb 2022 Deadline Closed 17 Sept 2021 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender Specialist contractor to undertake the design, construction and commissioning of a new high-density sludge treatment plant and decommissioning of the existing treatment plant. • The project objectives; • Replace the existing Treatment Plant with a High Density Sludge (HDS) plant; • Improve the scheme from an operational, environmental and health and safety perspective; • Improve the longevity and resilience of the scheme; • Provide efficiencies with improved chemical dosing and other controls; • Reduce operational costs; • Assess, record and reduce the carbon emissions associated with the life of the scheme; • Identify cost efficiencies; • Reduce risk of pollution of the River Neath and the Neath Canal; • Comply with the existing discharge consents; • Minimise the downtime of the existing scheme during construction; • Develop plans for the assessment, measurement, and continual improvement of waste management, sustainability and carbon impact for the construction, operation and decommissioning of the scheme. ## CPV classification Construction work Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/c5e8e5b2-d640-4485-98ca-ced5dd50e233) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile The Coal Authority: past awards and live tenders](https://tendernation.io/buyers/the-coal-authority) [Sector More Construction work tenders](https://tendernation.io/sectors/construction-work) ## More tenders like this [Bannister Sports Centre Athletic Track Soft Market Testing Exercise · Harrow Council · 38 days left · 26 Nov 2026](https://tendernation.io/opportunities/01a1540d-d9e4-71cb-ad57-1603e9042fec/bannister-sports-centre-athletic-track-soft-market-testing-exercise) [Building construction work – Budowa budynku mieszkalnego wielorodzinnego wraz z infrastrukturą techniczną w miejscowości Szczucin · KZN SIM Tarnów Sp. z o.o. · 7 days left · 26 Oct 2026](https://tendernation.io/opportunities/01a156a9-d859-7328-9ee6-a304ce645326/poland-building-construction-work-budowa-budynku-mieszkalnego-wielorodzinneg) [Floor-covering work – Universität Leipzig, Leuschnerplatz, Global Hub, Forschungsneubau · Staatsbetrieb Sächsisches Immobilien- und Baumanagement, Zentrale, Zentralstelle Vergabe- und Vertragsmanagement · 3 days left · 22 Oct 2026](https://tendernation.io/opportunities/01a156a9-acfc-73ee-baab-9e699f88521a/germany-floor-covering-work-universitat-leipzig-leuschnerplatz-global-hub) [Demolition work – Rück- und Neubau Lichthochmaste · Hamburg Verkehrsanlagen GmbH · 7 days left · 26 Oct 2026](https://tendernation.io/opportunities/01a156a9-6ef0-7276-94e2-d5fa0cb2d6c7/germany-demolition-work-ruck-und-neubau-lichthochmaste) [Plastering work – Modernisierung und Erweiterung Matthias-Claudius-Heim Würzburg · Diakonisches Werk Würzburg e.V. · 1 day left · 20 Oct 2026](https://tendernation.io/opportunities/01a156a9-e605-706f-8937-7f0ba18339c0/germany-plastering-work-modernisierung-und-erweiterung-matthias-claudius-hei) [Heating plant construction work – Petrašiūnų elektrinės elektrifikacija, įrengiant elektros energijos kaupimo įrenginius, dyzelinį generatorių ir rekonstruojant 6 kV skirstyklą (projektavimas ir rangos darbai) · Akcinė bendrovė „Kauno energija“ (PV) · 7 days left · 26 Oct 2026](https://tendernation.io/opportunities/01a156a9-6f1d-727f-a077-bc25dec93b92/lithuania-heating-plant-construction-work-petrasiunu-elektrines-elektrifikac)