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 Position: PhD Student at Cranfield University

Technologie Business

The Green Agenda – Who Gives a Floc?
Siobhán McGrath
Cranfield University

Raw Water Coagulation Filtration Disinfection

How do changes in raw water quality
effect floc strength?

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

Image: Hydro-Zone Inc. http://www.hydro-zoneinc.com/wastewater.htm accessed 16.04.13

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!)

The Green Agenda

Not just energy efficiency
and saving water!

@IrishFemgineer

uk.linkedin.com/in/SMcGrathCEng

 s.mcgrath@cranfield.ac.uk

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The Green Agenda - Who Gives a Floc?

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)

9. XAD-4 XAD-7HP

10. 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

11. How do changes in raw water quality effect floc strength?

12. Image: Hydro-Zone Inc. http://www.hydro-zoneinc.com/wastewater.htm accessed 16.04.13

13.

14. 4.8 mg/l DOC 7.2 mg/l DOC

15.

16.

17. 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!)

18. The Green Agenda Not just energy efficiency and saving water!

19. @IrishFemgineer uk.linkedin.com/in/SMcGrathCEng  s.mcgrath@cranfield.ac.uk

Hinweis der Redaktion

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