Advanced Water Treatment and UV. Paul Buijs Berson UV

Transcription

1 Advanced Water Treatment and UV Paul Buijs Berson UV

2 Outline Introduction Myself Berson Milestones in drinking water Impact on treatment Surface water treatment evolution Some statistics Netherlands situation UV technology

3 Short introduction - myself : Kiwa Water Research research and consultancy drinking water : GE Water&Process Synergy Leader : Global Membrains Global consultant on membrane applications 2010-: Berson UV Managing Director 1996-: UNESCO-IHE (Delft) Guest Lecturer Water Treatment Design

4 Short introduction - Berson Founded 1972 based in Nuenen, The Netherlands 97% export worldwide Europe, United States Asia, Australia, New Zealand South Amerika Focus on innovation 1980 Introduction Medium Pressure UV 1995 Introduction InLine -concept 2010 Introduction Summit -concept 2013 Introduction OpenLine 2014 Introduction AmaLine DVGW-, USEPA- or NWRI- validated

5 Milestones in drinking water

6 Milestones in drinking water (1) 1674: Antonie van Leeuwenhoek (NL) Tradesman and father of microbiology Relation between water and health: Giardia 1854: John Snow (UK) First epidemiologist (Cholera London) Introduction of slow sand filters : rebuild and expand infrastructure 1976: Joop Rook (NL) Discovery of THM as byproduct of chlorination Ban on chlorination in the Netherlands Start of intensive studies into organic micropolutants

7 Milestones in drinking water (2) 1970 s: herbicides and pesticides Introduction of PAC and GAC filtration 1980 s: ozone results in bromate Alternative disinfection required Introduction of UV in drinking water 1980 s: microbiological stability Safe up to consumers tap: no growth Without residual disinfection 1980 s: lead and copper Central softening of drinking water

8 Milestones in drinking water (3) 1990 s: polar OMP s (a.o. herbicides and pesticides) Not easily adsorbed on GAC Research in membrane and AOP 1992: Milwaukee (US) Cryptosporidium 400,000 sick, >100 people die final proof chlorine is not sufficient start of booming growth UV 1999: Bovenkarspel (NL) Legionella >300 people sick, >30 people die awareness of need to manage quality up to the tap 2000 and beyond: effect of pharmaceuticals hormones and stimulants: harmful in extreme low doses multi-resistant bacteria: growing use of anti-biotics as people get older

9 Surface water treatment evolution

10 Surface water treatment evolution (1) Reservoir Screens Breakpoint chlorination Coagulation Sedimentation/flotation Rapid Sand Filtration Post chlorination Distribution Reservoir Screens Enhanced coagulation Sedimentation/flotation Rapid Sand Filtration Ozonation Pellet softening GAC filtration UV Distribution

11 Surface water treatment evolution (2) Reservoir Mery-sur-Oise (Paris): 180,000 m³/day Screens Enhanced coagulation Enhanced sedimentation Ozonation Dual Media Filtration Nanofiltration Aeration UV Distribution

12 The future of surface water treatment Reservoir Screens Selective Ion Exchange Ozone Ceramic Microfiltration AOP: UV/H 2 O 2 Ceramac by PWN Technologies GAC Distribution

13 Some statistics

14 Some statistics (VEWIN, NL) Connected: Drinking water network: >99.8% Sewage network: >98% Accounted for water: >99.5% (<0.5% leakage) Availability: >99.9% (<1 day every 3 years without water) Water consumption: 1970: 250 l/capita/day 2010: 120 l/capita/day

15 UV Technology

16 UV Technology The Sun billion years old 21 st Century down-sizing!

17 Micro-organisms Capsule Cell wall Adenine Thymine Cytosine Guanine Typical Bacterium Nuclear material Cell membrane DNA

18 UV Disinfection UV penetrates cell wall disrupts DNA prevents cell reproduction DIMER

19 Growth of UV 100 Safe, environmentally friendly technology No disinfection by-products Chemical-free; no transportation, storage or safety concerns Effective against chlorine resistant pathogens, e.g. Cryptosporidium & Giardia Right disinfection choice; WW of upstream communities ultimately becomes DW of downstream communities Chlorine Disinfection UV Disinfection

20 Cost Comparison

21 InLine+ Series A trusted solution for over 15 years Small footprint Medium pressure lamps Vertical or horizontal flow design Regulatory Certified (NWRI, USEPA, DVGW) Proven more effective for preventing photo-reactivation Proven for non-filtered applications with low UV-T

22 Inline System: exploded view Outflow Cleaning System UV sensor lamps Temp.sensor inflow Water proof flange

23 AmaLine Series An energy efficient alternative Larger footprint, more lamps Low pressure high output lamps Vertical or horizontal flow design More efficient lamp technology Efficient reactor design Regulatory Certified NWRI, USEPA, DVGW

24 OpenLine Series An excellent retrofit opportunity Fits existing channels Low pressure high output lamps Horizontal flow design

25 Case studies

26 Waste water disinfection Type : Inline WW Nr of units : 5 (NW500) Flow : 120,000m 3 /day T10 : 60% Location : Szeged, Hungary (2007)

27 Effluent disinfection WWTP Sutton Type : InLine Configuration : 14 x parallel Flow : 384,000 m 3 /day Disinfection : <2 cfu/ml T 10 : 65% Location : Sutton, USA

28 Drinking water Méry-sur-Oise Type : Inline 1500 Number units : 5 Configuration : parallel, after nanofiltration riverwater Capacity : 180,000 m 3 /day Location : Paris, France

29 Application Drinking water Type : InLine 7000 (NW350) Number units : 4 Configuration : parallel Flow : 163,200 m 3 /day T10 : 90% Location : Metropolitane Milanese, Milan, Italy

30 Drinking water Basel Type : InLine (DVGW- certified) Number units : 3 Configuration : parallel Flow : 208,800m 3 /day T 10 : 97% Location : Basel, Switzerland Year : 2010 Expansion : 2013 (4th unit)

31 Conclusion Water treatment is changing: Responding to source and consumers Integrated approach required Role of UV increases: Low costs Effective against chlorine resistant pathogens No DBP s Thank you for your kind attention! Please feel free to ask questions