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P calcs

  PHOSPHORUS REMOVAL CALCULATIONS Will Flack | Updated 5/11/25 Normally delete info in yellow cells, apart from FE per Capita, PST M/T and returning to pre-entered values. Note: There are tabs before the front sheet — don't miss them. Replace Elmswell crude spots data with the actual works data. General Notes • Crude Sheet / Spots Sheet: RHS calculates in loads • "mg/l" units are wrong — change to kg/d • Composites Sheet: correct as-is FE Composite Sampling Data • Used for cloth filter sizing • If taking a lagoon out of service, use HST effluent data here instead • Ensure the summary covers the full data range • A PE-based load may be used instead of sampling data TSFR • Copy data to a separate document, remove errors, then paste back — add a link to the original data • Adjust print area to show graphs, not pages of raw data • Instantaneous Flows: Select the highest 12-month period and confirm it matches the sample date so loads calculate correctly • Set a sensible print ...
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Dam linked in

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  I think the strongest thread for your LinkedIn post is the unexpected intersection of war, civil engineering, wastewater history and environmental protection. You went expecting to see an engineering story about repairing a dam, but came away thinking about a different engineering story, one that was largely absent from the exhibition: what happens when catastrophic infrastructure failure meets inadequate sanitation, and whose suffering gets remembered. For your professional network, I would make the post reflective rather than accusatory, and use your wastewater expertise to...
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Dambusters

  When the  Ruhr Valley  flooded  following the British Royal Air Force's famous  "Dambusters" raid  ( Operation Chastise ) on the night of May 16–17, 1943,  the region  did not have a conventional underground sewer system  like other major European cities. Instead, the entire region relied on a unique, massive  open-air sewer network  centered around the  Emscher River .  [ 1 ,  2 ,  3 ] Why there was no underground sewer system During the late 19th and early 20th centuries, the Ruhr Valley experienced a massive industrial and population boom. However,  extensive coal mining  honeycombed the ground, causing the land surface to sink and shift constantly.  [ 1 ,  2 ,  3 ] Because of this severe ground subsidence, engineers could not build traditional underground brick or clay sewer pipes—the shifting earth would quickly crack, burst, and destroy them. To solve this, the regional water boar...
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