Tenders Are Invited For Electrical Installation Work Of Filtration Equipment – ​​Increase In The Capacity Of The Membrane Workshop In Zone M Of The Seine Aval Site

Electrical Installation Work Of Filtration Equipment – ​​Increase In The Capacity Of The Membrane Workshop In Zone M Of The Seine Aval Site. The Membrane Biological Treatment Line Of The After-Sales Service Plant, Received In 2018, Is Made Up Of 2 Lines (A And B), Which Are Each Made Up Of 14 Tanks. Each Tank Has The Capacity To Accommodate A Maximum Of 12 Cassettes. Currently, Only 10 Cassettes Are Deployed Per Tank. Finally, Each Cassette Is Made Up Of 48 Modules, For A Total Of 13,440 Modules. - These “Zenon” Brand Membranes Had A Guaranteed Lifespan, With Regard To Filtration Performance, Of 7 Years. - A Study Led By The Innovation Department Suggests Renewing The Cassettes From 2026, Taking Into Account 3 Scenarios Of Use Of The Cassettes And Observed Fiber Breakage Phenomena. - As Part Of Achieving The Annual Ngl Yield Of 70% Expected Under The Deru, Between 2022 And 2024, The Membrane Sector Has Treated On Average More Than 213,000 M³ Per Day, Which Represents An Ngl Reduction Of An Average Of 7.75 Tonnes Per Day. - In Order To Achieve The Ngl Yield Objectives For The Coming Years (71% In 2025, 72% From 2026), It Is Necessary To Replace The Membranes To Maintain Process Availability. The “Market Project Sheet” Concerns: - The Renewal, With A New Generation Of Membrane, Of All 13,440 Filtration Modules Of The Current Membrane Sector Whose Filtration Surface Amounts To More Than 456,000 M² Whose Warranty Period Has Expired Since February 2024 But According To The Di Simulations, We Will Begin To Observe A Critical Level Of Permeability On 2 Tanks (Of The 28 Tanks At Total) From July 2025. - The Increase From 10 To 12 Cassettes Per Tank, I.E. 16,128 Modules For A New Filtration Surface Area Of 548,352 M², In Order To Increase Our Peak Flow Filtration Capacity. This Extension Must Fit Into The Volumes Of The Existing Tanks To Be Diagnosed And Rehabilitated Without Extension Or Construction Of New Works. It Will Integrate The Additional Pipes And Ancillary Equipment Necessary For Its Operation. - The Resizing And Renewal Of The 28 Unclogging Boosters With The Necessary Adaptations To The Aeraulic Air Distribution Network, Electrical Supplies And Operating Automation. The New Installation Will Thus Make It Possible To Treat A Nominal Flow Of 4 M3/S And A Peak Flow Of 6 M3/S While Respecting The Ngl Yields Of The Deru. The Proper Functioning Of The Unclogging Boosters Is Essential To The Availability Of The Membranes In Their Filtration Capacities And Therefore Impacts The Flow Of Water Filtered By Cassette. The Treatment Performances Thus Conditioned By The Membrane Unclogging Cycles, And Therefore By The Characteristics Of The Boosters And Their Automation, Do Not Allow The Replacement Of The Membranes, Their Extension And The Renewal Of The Unclogging Boosters To Be Allocated Separately. We Therefore Offer A Single Batch For Lensem