Aquaray Ultraviolet Disinfection Systems seminar. UV presentation.pdf · HEADWORKS |BIOLOGICAL...

Aquaray®

Ultraviolet Disinfection Systems

HEADWORKS | BIOLOGICAL | SEPARATIONS | MEMBRANES | OXIDATION-DISINFECTION | BIOSOLIDS | INDUSTRIAL SYSTEMS WWW.DEGREMONT-TECHNOLOGIES.COM

Who is Ozonia ?

•Founded in 1990 by Degrémont and Air Liquide•Part Of the Degremont Technologies Group Of Companies

•Location: Paris, Glasgow, Zurich, New Jersey

Ozonia Ltd, Zurich, Switzerland Ozonia North America, New Jersey, USA


OZONIA NORTH AMERICA 3

TriogenGlasgow, Scotland

OzoniaNorth AmericaLeonia, USA

OzoniaFranceParis, France

Ozonia LtdZurich, Switzerland

Ozonia JapanTokyo, Japan

Ozonia OOONizhniy Novgorod, Russia

Ozonia ChinaBeijing, China

Ozonia KoreaSeoul, Korea

The Ozonia Group



• Ozonia is part of Degremont Technologies which is theequipment manufacturing group for Suez Environment. Suez Environment is a world leader in Water Treatment consistingof:

- 80,000 employees throughout the world - €14 billion total group revenue (2010)

Who is Ozonia?Who is Ozonia?


Degrémont Technologies Company (Equipment Supplier)

Degrémont Company

Degremont Group



• UV and Ozone disinfection technologies

• Advanced oxidation processes (combination of UV, O3 and others.)

• Municipal and industrial water treatment applications

CFV Series Ozone Generator Aquaray ® H2O Medium Pressure UV System

Our business:




UV has beenmanufacturedin Ashland (Virginia) and Glasgow for

over 20 years

Our Manufacturing facilities:



•Design and Engineering•Manufacturing• Installation and Commissioning•After Sales Service and Support

•Design and Engineering•Manufacturing• Installation and Commissioning•After Sales Service and Support

Our business

Who is Ozonia?


UV Organisation

Production center :

- US (ONA)

- SCOTLAND (TRIOGEN)

-FRANCE (OFR)

Research center :

- US (ONA)


OZONIA 10

• Main Spare Parts Inventory in Glasgow, Laval, Zurich, New Jersey, Virginia, South Corea.

• All major spare parts are available for immediate delivery

Spare Parts Inventory


UV Disinfection


OZONIA 12

What is UV ?

• Specially engineered light bulbs “lamps” emit UV light energy

• UV light energy covers a broad spectrum of short wavelengths from below 200 nm (nanometers) to the visible light spectrum of about 400 nm

• Research has shown that a 254 nm wavelength produces the strongest effect in controlling microorganisms

• this is called UV disinfection

• 254 nm is called the germicidal wavelength

Disinfection with UV


13

What is UV ?


100 200 280 315 400 700 1000

UVCVacuum UV UVB UVA Visible Near IR

Wavelength, λλλλ nm

High Energy Low Energy

DNA Damage

Sun Burning

Sun Tanning

254 nm germicidal wavelength


OZONIA 14

How Does UV Work ?

• UV energy penetrates the outer cell membrane, through the cell body, and disrupts its DNA

therefore preventing reproduction.


Typical BacteriumTypical Bacterium

CellCellmembranemembrane

NuclearNuclearmaterialmaterial

CapsuleCapsule

Cell wallCell wall


OZONIA 15

− Formation of Thymine binders whentwo adjacent thymine moleculesbecome fused, therefore preventingbacteria from replicating

− A microbial organism that cannotreplicate and multiply is consideredinactivated

• The effect of UV-C rays on DNA



OZONIA 16

Advantages of UV Disinfection

• Environmentally friendly

• Rapid disinfection (no need for holding tanks, long retention times, etc.)

• No chemicals added to the water supply and therefore no by-products such as trihalomethanesformed with chlorine.

• No handling of toxic chemicals, no need for specialized storage requirements.

• More effective against viruses than chlorine.



OZONIA 17

UV System Sizing Considerations

• Application (Wastewater, Drinking Water..etc)

• Peak, Average and Minimum Flow Rates to be treated

- UV dosage required for application

• Quality/UV transmittance of water being treated

• Regulations or Effluent Quality Requirements

• Open or closed Chamber UV reactor design:

• Open channel for large volumes, typical for wastewater• Closed for lower volumes, process treatment



OZONIA 18

• Pathogen sensitivity to UV-C light

Microorganism TypeDose UV (mJ/cm2)

1-log 2-log 3-log 4-log

Giarda lamblia Cyst < 2 < 3 < 5 -

Cryptosporidium parvum Cyst < 1 < 3 < 6 -

Escherichia coli Bacteria 3 4.8 6.7 8.4

Staphylococcus aureus Bacteria 3.9 5.4 6.5 10.4

Sreptococcus faecalis Bacteria 6.6 8.8 9.9 11

Poliovirus Type 1 Virus 5.6 11 16 22

MS-2 Virus 14 29 45 62

Bacilius subtilis Spore 36 49 61 78

Adénovirus Type 40 Adénovirus 30 59 90 120



OZONIA 19

• The amount of UV energy (dosage) available for disinf ection is a function of:• UV energy at a specific wavelength • exposure time (seconds) to the UV light

• water quality

• Color, particles and solids affect UV transmission col or, particles and solids affect UV transmission

• Dosage is expressed as milliJoules per square centimete r (mJ/cm2) or milliwatt seconds per centimeter squared (mWsec/cm 2)


What is UV dose ?


OZONIA 20

UV light can be produced by the UV light can be produced by the following lamps:following lamps:

LowLow--pressure (LP) mercury vapor lampspressure (LP) mercury vapor lamps

LowLow--pressure highpressure high--output (LPHO) mercury output (LPHO) mercury vapor lampsvapor lamps

MediumMedium--pressure (MP) mercury vapor lampspressure (MP) mercury vapor lamps

ElectrodeElectrode--less mercury vapor lampsless mercury vapor lamps

Metal halide lampsMetal halide lamps

Xenon lamps (pulsed UV)Xenon lamps (pulsed UV)



Various types of lamps

• Current Technologies:

1. Low-Pressure Low-Output

2. Low-Pressure High-Output

3. Medium-Pressure High-Output

Used by Degrémont Technologies - Ozonia

(1)

(2)

(3)


Emission spectra

Wavelength (nm)

200 225 250 275 300

Rel

ativ

e In

ten

sity

(m

W c

m-2)

Wavelength (nm)

200 250 300 350 400R

elat

ive

Inte

nsi

ty (

mW

cm-2

)

LPHO & LPVHOMonochromatic

MPHOPolychromatic


Low pressure lamps VS Medium pressure

Low pressure lampsLow pressure lamps

Advantage Disadvantage

Lamp BP

- Well adapted for low or medium flow (< 800m3/h)

- Lower electric consumption (high efficiency)

- Low power (watts)

- Not well adapted for high flow

- No diming

- High number of lamp


Low pressure lamps VS Medium pressure

Medium pressure lampMedium pressure lamp

Advantage Disadvantage

Lamp MP

- Well adapted for high or medium flow

- High power (K watts)

- Diming (20 à 100%)

- Low footprint

- Low head loss

- Few lamps

- Higher electric consumption

- Not well adapted for low or medium flow


Inactivation with UV light

UV Lamp

Inlet :

Activated pathogens

Outlet :

Inactivated pathogens

UV contact time

Basic principle

Inactivation



• Basic definition : the dose− [ I ] Intensity (mW ou µW) : Energy generated by the UV lamp. It’s named

intensity UV-C

− [ t ] Contact time (s) : Effective time of exposure of the pathogen

− [ D ] Dose : Quantity of energy of UV applied to pathogen [ I ] during a certain time [ t ]

Units used : mW.s/cm2 or mJ/cm2 or W.s/m2 or J/m2

Dose = Intensity x Contact time



• Basic definition : the dose

− Minimal dose : dose necessary to obtain requested level of disinfection (quantity of pathogen reduction or concentration of pathogen)

Value determined per pathogen to neutralize

− Effective dose : dose really received by the pathogen, obtained by curves established in laboratory on the equipment (Bio-Assay)

Value depending from the equipment


What is a bioassay ?What is a bioassay ?

Third party validated and completed bioassay testing

organized by the DVGW in Germany or USEPA in USADVGW in Germany or USEPA in USADVGW in Germany or USEPA in USADVGW in Germany or USEPA in USA

2.2.2.2. Collimated beam lab test

7.7.7.7. Bioassa

y validate

d

Dose dedu

cted

4.4.4.4. Doped Water preparation

5.5.5.5. Full scale test6.6.6.6. Log Reduction tested

3.3.3.3. Dose/Response curve known (Log reduction)

Shatin STW Collimated Beam Results

y = 0.2101x + 0.0969

y = 0.0243x + 2.7782

R2 = 0.3053

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

0 5 10 15 20 25 30 35 40 45

E. coliPeak

1.1.1.1. Challenging microorganism

(Bacillus subtilis or MS2)


The well known German DVGW organized the Aquaray® H20 20”validation directly on their test bench and they completed strict bioassay testing protocols to validate this range.

The well known US HYDROCAL have done the Aquaray® H20 36” validation directly on their test bench and they completed strict bioassay testing protocols, USEPA, to validate this range.

Drinking Water certificationsDrinking Water certifications


OZONIA 30

UV Reactor Design and Validation

• Reactors are then tested and validated by a third-party according to German DVGW or US EPA standards

UV Validation and Research Center of New York in Johnstown, NY

Test Flow Capacity from 1 to 10 000 m3/h


UV Transmittance

• UV Transmittance or UVT(%)

• Absorbance : cm-1

−=100

logUVT

A

• Typical transmittance : waste water 55-70 %

drinking water 85-98 %

ultra pure water 98-100 %



• Others parameters influencing the sizing

− Dissolved Organics and inorganics (Iron, manganese, humic acids) which can limit the UV emission, even if water is limpid.

− Physical parameters (turbidity, colloids) which can settle on the quartz sleeves protecting the lamps.

− Suspended solids which can encapsulate the bacteria and make screen for the UV emission.


Treatment line : Drinking water


Treatment line : Waste water

Aquaray® SLP&H2O Ultraviolet Disinfection Systems


OZONIA 36

• Typically low pressure high output lamps

• Up to 800 m3/h per reactor

• Option : automatic wipers

• Typically low pressure high output lamps

• Up to 800 m3/h per reactor

• Option : automatic wipers

Types of UV Reactors

“L-Shaped” Type Reactor

Outlet

Inlet


OZONIA 37

UV Reactor Design and Validation

• UV Reactors are first designed with sophisticated CFD modeling software to optimize the hydraulic performances :


Aquaray® H2OAquaray® H2O

Aquaray ® H20 seriesAquaray ® H20 seriesFor large size Drinking Water Plant For large size Drinking Water Plant

Inline Cross Flow design Inline Cross Flow design

Medium Pressure lampsMedium Pressure lamps


OZONIA 39

• Typically medium pressure lamps

• Up to 8 000 m3/h per reactor

• Automatic Wipers

• Typically medium pressure lamps



Types of UV Reactors

“Flow-Through” Type Reactor


OZONIA 40



• Very Compact design




Ozonia Aquaray® H2O 20” UV Reactor Drinking Water Disinfection


Types of UV Reactors System


6 DVGW approved sensorsSensorsSensorsSensorsSensors

6 lampsNumber of lampNumber of lampNumber of lampNumber of lamp

Electronic variable outputBallast typeBallast typeBallast typeBallast type

10 000 hoursAverage life time*Average life time*Average life time*Average life time*

From 300 to 1 500 m3/hFlow rate rangeFlow rate rangeFlow rate rangeFlow rate range(40mJ/cm(40mJ/cm(40mJ/cm(40mJ/cm²²²² @ 95% UVT)@ 95% UVT)@ 95% UVT)@ 95% UVT)

4 kWElectrical lamp powerElectrical lamp powerElectrical lamp powerElectrical lamp power

The Aquaray® H20 20" uses Medium Pressure lamps, with high output density to :

*Lamp life time proven by third party validated aging tests.

Medium Pressure LampsMedium Pressure Lamps


OZONIA 42











6 DVGW approved sensorsSensorsSensorsSensorsSensors

6 – 8 -10 lampsNumber of lampNumber of lampNumber of lampNumber of lamp

Electronic variable outputBallast typeBallast typeBallast typeBallast type

10 000 hoursAverage life time*Average life time*Average life time*Average life time*

Up to 8 000 m3/hFlow rate rangeFlow rate rangeFlow rate rangeFlow rate range(40mJ/cm(40mJ/cm(40mJ/cm(40mJ/cm²²²² @ 95% UVT)@ 95% UVT)@ 95% UVT)@ 95% UVT)

8 kWElectrical lamp powerElectrical lamp powerElectrical lamp powerElectrical lamp power

The Aquaray® H20 36" uses Medium Pressure lamps, with high output density to :

*Lamp life time proven by third party validated aging tests.

Medium Pressure LampsMedium Pressure Lamps


OZONIA 44











Aquaray ® H20 - 20”Flow up to 1 500 m 3/h*

Aquaray ® H20 - 20”Flow up to 1 500 m3/h*

Aquaray ® H20 - 36”Flow up to 8 000 m 3/h*

Aquaray ® H20 - 36”Flow up to 8 000 m3/h*

*40 mJ/cm² @ 95% UVT*40 mJ/cm² @ 95% UVT

Aquaray® H2OAquaray® H2O

new


OZONIA 46

Lamp

Wiper

Sensor

Sleeves

Key UV Reactor Components


OZONIA 47

Lamp connection

Wiper drive

Sensor ports

Temperature probe



OZONIA 48

Sensor PortOne/Lamp

Wiper Plate

ElectropolishedReactor



OZONIA 49

Why UV sensors are important

• In drinking water, there is no indicator microorganism since there should be no biological activity after the UV system.

• Fail-safe monitoring methods are the only way to truly know if the UV system is working properly,

• UV sensors that monitor the UV lamp output are the only way to continuously monitor the UV system.

• Monitoring each lamp in the system will prove that each lamp is emitting the proper UV output.

• Correlating the sensor readings to the bioassay testing is the best way to confirm the delivered dose in the system is above the requirement.



OZONIA 50

� Each UV reactor has its own PSU panel

� An eye level touch screen display allows for easy interface and complete control of the system.

� Automatic control of the system by the PLC allows for optimization of the energy consumption of the unit while maintaining the proper UV dose.

� Electronic power supplies allow for continuous dimming of the lamps for conservation of energy.



OZONIA 51

Continuous dimming of UV lamps allows for energy conservation

Electronic Ballasts

Magnetic Ballasts

0%0%

25%

50%

75%

100%

81%

50%

75%

100%

81%

Large power steps waste energy

Electronic vs. magnetic ballasts



OZONIA 52

• Lamps need to be replaced every 18-24 months.

• Wiper rings need to be replaced every 2 years.

• UV sensor checks (recommended every 3 months).

• Wipers work very well to clean quartz sleeves but if water is a highly fouling water, then the UV reactors might need to be taken off-line and chemically cleaned (citric acid or phosphoric acid) on occasion.

• Routine sensor calibration checks prevent error and reduce electricity consumption

Operation and Maintenance

Typical UV System Maintenance:


OZONIA 53

Routine sensor calibration checks prevent error•A reference sensor is

recommended for each plant.

•Recommend to check sensors every 3 months.

•Sensor ports allow this to occur while reactor is online.

•Factory re-calibration if necessary.

Operation and Maintenance

TypicalInstallations


OZONIA 55

Lawrence, MA

• Six 20” reactors

• Peak flow: 3 800 m3/h

• UVT (254 nm): 90%

• UV dose: 40mJ/cm2

Ultraviolet Disinfection Installations


OZONIA 56

Upper Saddle River, NJ

• Two 20” reactors

• Peak flow: 500 m3/h

• Avg. flow: 1 MGD

• UVT (254 nm): 90%

• UV dose: 80mJ/cm2




Eaux de Paris, Orly

> 40 mJ/cm²Minimum UV bioassay dose

> 90%UV transmission

2 X 11Number of UV reactors

Aquaray® H2O 20”UV model

1 200 m3/hMaximum flowrate per GAC filter

11Number of GAC filters

12 500 m3/hMaximum flowrate

Joinville plant



11 x 2 reactors1 200 m3/h per reactor

Orly


Ultraviolet Disinfection InstallationsOrly

Isolating valve

Regulation Valve

Flow

Aquaray ® H2O 20’’



Eaux de Paris, Joinville

> 40 mJ/cm²Minimum UV bioassay dose

> 90%UV transmission

14Number of UV reactors

Aquaray® H2O 20”UV model

900 m3/hMaximum flowrate per GAC filter

14Number of GAC filters

12 500 m3/hMaximum flowrate

Joinville plant


Design Joinville

Reduced spaceavailaible

No change of the hydraulic gradient

3 hypothesis

UV Reactor DN500Medium pressureReactor

Reduced headlosses

1 validated reactor = 3 solutions

No problem with the regulation of the filter

Design of the reactor

1 2 3

Aquaray ® H2O


Selection of Degremont, Joinville

• Aquaray® H2O reactor (Degremont Technologies-Ozonia) with an approval from the Health ministry following favourable opinion from the AFSSA

• The Aquaray® H20 offers compact footprint and easy integration

• CFD modelling in order to calculate UV dose and quantify precisely headlosses


Integration into an existing plant, Joinville

• Study of the influence of valves on the hydraulics of the UV reactors

• Study of the influence of the hydraulics of the UV reactors on the operation of the downstream control valve

• Comparison with an optimum hydraulic configuration as recommended by the DVGW

• Estimation of headlosses

− Limited available space:

• Control valves and shut-off valves close to UV reactors• Hydraulic configuration different from the one recommended by DVGW

− Creation of a modelling by CFD:

Isolating valve

Regulation valve

Joinville DWTP

UV reactor

1

2

2



14 reactors900 m3/h per reactor

Joinville DWTP



Regulating valve

Isolating valve

water

Aquaray® H2O 20’’


Schedule (Joinville DWTP)

Notification

August 2008 Dec 2008

Part 11 reactor in Joinville

Jan 2009 June 2009

Part 213 reactors in Joinville

Sept 2009

Acceptance

Efficiency

test


OZONIA 67

• Low headloss

FeaturesFeatures BenefitsBenefits

• Proven Technology • Over 60 operating installations with the same lamp and ballast combination

• Continuous dimming for optimal energy efficiency

• Electronic ballasts

• Extremely small footprint

Why choose the Aquaray® H2O Ultraviolet Disinfection system?

•• One sensor per lamp • Absolute monitoring

Conclusion


OZONIA 68

• Automated mechanical wiper system (no chemical)

FeaturesFeatures BenefitsBenefits

• Quick change lamps, quick change wiper caps, sensor calibration checks.

• Low maintenance

• Sensor responds to only the germicidal wavelengths

• Monitoring accuracy throughout the life of the UV lamps

• Reduces cleaning maintenance

Why choose the Aquaray® H2O Ultraviolet Disinfection system?

Conclusion

Aquaray Ultraviolet Disinfection Systems seminar. UV presentation.pdf · HEADWORKS |BIOLOGICAL...

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