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"releaseTag": [ "planning" ], "value": "PRO005005-Lithium Trace Testing" }, { "releaseID": "032023-2026", "releaseDate": "2026-04-08T15:02:40+01:00", "releaseTag": [ "tender" ], "value": "PRO005005" } ], "legalBasis": { "id": [ { "releaseID": "075490-2025", "releaseDate": "2025-11-20T09:51:30Z", "releaseTag": [ "planning" ], "value": "2023/54" } ], "scheme": [ { "releaseID": "075490-2025", "releaseDate": "2025-11-20T09:51:30Z", "releaseTag": [ "planning" ], "value": "UKPGA" } ], "uri": [ { "releaseID": "075490-2025", "releaseDate": "2025-11-20T09:51:30Z", "releaseTag": [ "planning" ], "value": "https://www.legislation.gov.uk/ukpga/2023/54/contents" } ] }, "title": [ { "releaseID": "075490-2025", "releaseDate": "2025-11-20T09:51:30Z", "releaseTag": [ "planning" ], "value": "PRO005005-Services-Framework-Lithium Trace Testing" }, { "releaseID": "032023-2026", "releaseDate": "2026-04-08T15:02:40+01:00", "releaseTag": [ "tender" ], "value": "Lithium Trace Testing" } ], "description": [ { "releaseID": "075490-2025", "releaseDate": "2025-11-20T09:51:30Z", "releaseTag": [ "planning" ], "value": "United Utilities (UU) require non-intrusive tank capacity and sediment assessment of Anaerobic Digesters using Lithium chloride as a trace element to comply with Environmental Permitting (England & Wales) Regulations 2016 implementing the Industrial Emissions Directive (IED). Analysis could be completed on any of UU's Anaerobic Digestion facilities, located in the North West of England. Testing is required periodically (5 years) to comply with regulation. Testing is likely to be limited to assets that are to be retained into AMP 9, so will not be required on all UU anaerobic digesters. Monitoring equipment, techniques, personnel and organisations shall have either MCERTS certification or MCERTS accreditation (as appropriate). An accompanying report must be issued detailing the methodology and full results of the assessment. The report should detail the digester active volume, hydraulic retention time, evidence of short circuiting and mixing efficiency using charts where appropriate. Those undertaking Lithium Trace Testing surveys must liaise with UU Bioresource Services team to arrange visits in aligned to a pre agreed schedule as per UU's third party scheduling procedure." }, { "releaseID": "032023-2026", "releaseDate": "2026-04-08T15:02:40+01:00", "releaseTag": [ "tender" ], "value": "The Bioresource and Energy Services team require non-intrusive tank capacity and sediment assessments of Anaerobic Digesters using Lithium chloride as a trace element to comply with Environmental Permitting (England & Wales) Regulations 2016 implementing the Industrial Emissions Directive (IED) every 5 years, which takes an integrated approach to controlling pollution to air, water, and land from industrial activities. We require the supplier to develop methodology to determine the effective volume of an anaerobic digester over a short period of testing time. The effective volume should be calculated from the lithium concentration once it reaches a steady and consistent level. The calculation for effective volume should be based on the dose of lithium chloride added, the concentration of lithium, and the background concentration established before the test is initiated. The results of the data should establish the following, and be presented within a report: Mixing efficiency Hydraulic retention time (HRT) Short‑circuiting or dead zones Sediment/grit accumulation The lithium chloride is to be dosed into each digester’s feed line, or other suitable position. Prior to the dosing of lithium chloride, initial samples should be taken from each digester in order to establish the background lithium concentrations. 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Services team require non-intrusive tank capacity and sediment assessments of Anaerobic Digesters using Lithium chloride as a trace element to comply with Environmental Permitting (England & Wales) Regulations 2016 implementing the Industrial Emissions Directive (IED) every 5 years, which takes an integrated approach to controlling pollution to air, water, and land from industrial activities. We require the supplier to develop methodology to determine the effective volume of an anaerobic digester over a short period of testing time. The effective volume should be calculated from the lithium concentration once it reaches a steady and consistent level. The calculation for effective volume should be based on the dose of lithium chloride added, the concentration of lithium, and the background concentration established before the test is initiated. The results of the data should establish the following, and be presented within a report: Mixing efficiency Hydraulic retention time (HRT) Short‑circuiting or dead zones Sediment/grit accumulation The lithium chloride is to be dosed into each digester’s feed line, or other suitable position. Prior to the dosing of lithium chloride, initial samples should be taken from each digester in order to establish the background lithium concentrations. 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