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The Green Agenda - Who Gives a Floc?

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Presented at the 14th International Water Association (IWA) Young Water Professionals Conference. Teesside University, 17th-19th April 2013 …

Presented at the 14th International Water Association (IWA) Young Water Professionals Conference. Teesside University, 17th-19th April 2013
Position: PhD Student at Cranfield University

Published in: Technology, Business

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  • Increasing levels of NOMCoagulation/flocsFiltrationDBPs/THMs….. Flocs are important
  • Info about TRUSTTransitions to the Urban Water Services of Tomorrow
  • NOM made up of complex mixChemical characterisationFractionationHPO, HPI. Transphilic
  • NOM made up of complex mixChemical characterisationFractionationHPO, HPI. Transphilic
  • Simple jar testParticle size analysis over timeApplied shear stress
  • Mimicking changes in water quality
  • Transcript

    • 1. The Green Agenda – Who Gives a Floc? Siobhán McGrath Cranfield University
    • 2. Raw Water Coagulation Filtration Disinfection
    • 3. www.trust-i.net - info@trust-i.net
    • 4. Natural Organic Matter (NOM)
    • 5. How do changes in raw water quality effect floc strength?
    • 6. SITE 1 10.4 mg.l-1 DOC 1.5 m-1.l mg-1.C SUVA 2.0 NTU SITE 2 2.8 mg.l-1 DOC 3.7 m-1.l mg-1.C SUVA 3.7 NTU SITE 3 4.8 mg.l-1 DOC 4.6 m-1.l mg-1.C SUVA 0.88 NTU
    • 7. Natural Organic Matter (NOM)
    • 8. XAD-4 XAD-7HP
    • 9. SITE 1 10.4 mg.l-1 DOC 1.5 m-1.l mg-1.C SUVA 2.0 NTU SITE 2 2.8 mg.l-1 DOC 3.7 m-1.l mg-1.C SUVA 3.7 NTU SITE 3 4.8 mg.l-1 DOC 4.6 m-1.l mg-1.C SUVA 0.88 NTU
    • 10. How do changes in raw water quality effect floc strength?
    • 11. Image: Hydro-Zone Inc. http://www.hydro-zoneinc.com/wastewater.htm accessed 16.04.13
    • 12. 4.8 mg/l DOC 7.2 mg/l DOC
    • 13. Is there a way to predict treatability based on water quality?How can water treatment plant operators react to these variations? How can the water industry design WTWs for an uncertain future? (Hopefully I will have all these answers in a year!)
    • 14. The Green AgendaNot just energy efficiency and saving water!
    • 15. @IrishFemgineeruk.linkedin.com/in/SMcGrathCEng s.mcgrath@cranfield.ac.uk