Excursion swimming pool De Heerenduinen in Velsen Maarten Keuten - PowerPoint PPT Presentation

Excursion swimming pool De Heerenduinen in Velsen Maarten Keuten M.G.A.Keuten@TUDelft.nl Velsen October 09, 2007 1

Program Introduction pool water treatment • Future pool water treatment • Guided tour through technical rooms • • water treatment • ventilation / air conditioning Closing • Return to Delft • October 09, 2007 2

I ntroduction pool water treatment Dynamic bathing load • Main requirements • Treatment techniques • October 09, 2007 3

4 Filling a swimming pool October 09, 2007

5 Filling a swimming pool October 09, 2007

6 Filling a swimming pool October 09, 2007

7 Filling a swimming pool October 09, 2007

8 Filling a swimming pool October 09, 2007

9 Filling a swimming pool October 09, 2007

10 Filling a swimming pool October 09, 2007

11 Filling a swimming pool October 09, 2007

12 Filling a swimming pool October 09, 2007

13 Filling a swimming pool October 09, 2007

Dynamic bathing load NOM such as humic acids sand, leaves, grass food & drink leftovers cleaning chemicals sweat hair urine skin fragments saliva bacteria faecal matter soap residue blood vomit cosmetics October 09, 2007 14

Main requirements Acceptable microbiological risks • Clear view till the pool bottom • No accumulation of chemical components • October 09, 2007 15

Pool water treatment Primary techniques • • filtration of particles • coagulation of smaller particles • disinfection of microorganisms Secondary techniques • • pH correction • oxidation of pollutants by chlorine • heating October 09, 2007 16

Pool water treatment Additional techniques • • BAC filtration • ozonation • UV-treatment • Ultrafiltration October 09, 2007 17

Pool water treatment pool basin oxidation/disinfection supplement pH-correction water flocculation heating buffer circulation filtration October 09, 2007 18

19 500 1200 Bi-Flow filtration October 09, 2007

Swimming pool risks and trends free chlorine free chlorine Micro’s Acceptable � risk � Chlooramines rest DBP’s Risks � � � Total Concentration free chlorine October 09, 2007 20

Future pool water treatment UV treatment is used in drinking water treatment and is effective for many microorganisms. Can we make microbiological safe swimming pool water with an innovative pool water treatment based on UV treatment. October 09, 2007 21

Balancing the risks Without chlorine, there is no DBP risk. The microbiological risk in a non-chlorinated pool should be comparable with the sum of chemical and microbiological risk in a chlorinated pool. October 09, 2007 22

PhD study Research topics: • SwimRisk study (balancing the risks) • Biofilm formation potential • Lab & field experiments October 09, 2007 23

Biofilm formation potential Influence water • • organic matter • growth reducing factors • water treatment Influence materials en coatings • Concepts for cleaning • • mechanical; cleaning probes or cleaning equipment • chemical; sodium hypochlorite, CuSO 4 , H 2 O 2 or others (shock treatment) October 09, 2007 24

Lab & field experiments jar tests • bath tub / pilot plant experiments • full scale field experiments • technical exploitation • October 09, 2007 25

26 This is not possible without chlorine October 09, 2007

27 This is possible without chlorine October 09, 2007