Ozone – Applications and Products PLOVDIV – 01 December 2015
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Ozone – Applications and Products
PLOVDIV – 01 December 2015
What is Ozone?
Molecular weight: 48 g/mol
Density @ 1013 mbar, 0°C: 2,14 kg/m³
Max. limit for ambient level: 0,1 ppm
0,2 mg/m³air
Odor threshold: 0,01 ppm
Redox potential: 2,07 V
Comparison of oxidants:
- Oxygen (mol.) 1,23 V
- Chlorinedioxide 1,27 V
- Chlorine 1,36 V
- Hypochlorite 1,49 V
- Ozone 2,07 V
- OH radical 2,80 V
Blue, pungent and strong smelling gas
O(3)ZONE .. The Molecule
OZONE [greek = smelling]
Strongest oxidant, effective disinfectant ! Decomposition - generation on site only !
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A typical customer request …
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How does Ozone Work?
Ozone oxidation follows two pathways: – Direct - Ozone contacting microorganism or contaminant – Indirect - Ozone disintegrates into short living, stronger, hydroxyl radicals
Both reactions occur simultaneously
Since Chlorine is still a widely used and known chemical for oxidation and disinfection, Ozone is often compared to Chlorine
Ozone acts 3000 times faster than chlorine as a bactericide for Disinfection of E-coli
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Disinfection Mechanism Chlorine versus Ozone Bacterium structure
Chlorine must diffuse through cell wall to inactivate organism
Ozone lysis, rupture cell wall on contact to inactivate organism
DNA Nucleic acid
Cell wall
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Practical Example of Ozone as a Biocide Use of Chemical Biocide
Use of Ozone as Biocide Existing Biofilm is removed by ozone
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Example of the Oxidation Power of Ozone
O3 Oxidation
Raw Water O3 Treated Water
How do we make Ozone ?
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Oxygen containing feed gas (Air/LOX)
Free oxygen atoms and
oxygen molecules
Product gas: Ozone-Feedgas
mixture
Ozone production inside of an electrical field Energy (Ozone Generator) Generator
inlet Generator
outlet
Heat
Electrical Field
Electrical Field
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Design of an ozone plant Ozone destructors
Introduction-Reaction systems
Ozone Generators
Cooling Water supply
Measurement devices
Feedgas Supply
PLC and
SCADA
Ozone Generator – Portfolio
PDOevo Series
GSO Series
Containerized Solutions
SMOevo Series
Food and Beverage (Bottling Industry) Process water loops Small drinking water plants Aquaculture, Aquariums, Zoo Swimming pools Cooling water/towers Pilot or Laboratory systems
The GSO Series (3 – 400 g/hr) Our small scale ozone series. The main applications for this compact unit are:
OCS Unit
Small to Medium drinking water plants Cooling water/tower treatment Small to Medium waste water plants Industrial process water or wastewater treatment
The SMOevo Series (0.4 – 27,5 kg/hr) Our medium scale “workhorse” systems. The main applications for the SMOevo Series generators are:
1 Power Supply Unit 2 Operator Panel TP 177
3 Safety Pressure Switches
4 Safety Valve 5 Pressure Reducer 6 Gas Inlet Flange 7 Gas Inlet Filter 8 Gas Control Valve 9 Check Valve
10 Cooling Water Flow Meter 11 Cooling Water Inlet Flange 12 Ozone/Gas Outlet Flange 13 Ozone generator 14 Ozone Concentration Monitor optionally 15 Gas flow Meter 16 Air Conditioned Cabinet Door
Large drinking and waste water plants
Pulp Bleaching Large industrial wastewater plants
Industrial off-gas treatment
The PDOevo Series (20 – 300 kg/hr)
Our large scale ozone series. The main applications for PDOevo Series are:
Applications
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Laminating processes - i.e. laminating of TetraPak
Drinking water - improvement of flocculation - decoloration/taste/odor - Fe/Mn elimination - Disinfection - TOC -elimination (i.e. THM´s) - Elimination of endocrine substances
Process water - cooling water (i.e. in power plants) - swimming pools - rinsing water in beverage industry - etc.
Ozonolysis / Synthesis - Synthesis of new products - Modification of products
Product polishing - Improvement of viscosity i.e.starch) - Disinfection of food (i.e. salade) - etc.
Desodoration - Oxidation of H2S (waste gases), - Mercaptanes
Wastewater Treatment - Elimination of COD - Decolouration - Elimination of Tensides - Elimination of Phenoles - Sludge Treatment - Elimination of AOX - Elimination of endokrine substances - Detoxification - Etc.
Bleaching - Kaolin - pulp
Applications for Ozone
Applications are one thing –
a sales opportunity is another
Parameters and parametric values as per 98/83/EC
Parameter Parametric value Parameter Parametric value
Escherichia coli (E. Coli) 0 / 100ml Epichlorohydrin 0,10 µg/l
Enterococci 0 / 100ml Fluoride 1,5 mg/l
Acrylamide 0,10 µg/l Lead 10 µg/l
Antimony 5,0 µg/l Mercury 1,0 µg/l
Arsenic 10 µg/l Nickel 20 µg/l
Benzene 1,0 µg/l Nitrate 50 mg/l
Benzo(a)pyrene 0,010 µg/l Nitrite 0,50 mg/l
Boron 1,0 mg/l Pesticides 0,10 µg/l
Bromate 10 µg/l Pesticides — Total 0,50 µg/l
Cadmium 5,0 µg/l Polycyclic aromatic hydrocarbons 0,10 µg/l
Chromium 50 µg/l Selenium 10 µg/l
Copper 2,0 mg/l Tetrachloroethene and Trichloroethene 10 µg/l
Cyanide 50 µg/l Trihalomethanes 100 µg/l (total)
1,2-dichloroethane 3,0 µg/l Vinyl chloride 0,50 µg/l
affected by Ozone
Indicator parameters and values as per 98/83/EC
Parameter Parametric value Parameter Parametric value
Aluminium 200 µg/l Odour Acceptable and no abnormal change
Ammonium 0,50 mg/l Oxidisability mg/l O2
Chloride 250 mg/l Sulphate 250 mg/l
Clostridium Perfringens (incl. spores) 0 / 100ml Sodium 200 mg/l
Colour Acceptable to consumers and no abnormal change
Taste Acceptable to consumers and no abnormal change
Conductivity 2500 µS/cm at 20°C Colony count 22°C no abnormal change
Hydrogen ion concentration ≥6,5 and ≤ 9,5 pH units Coliform Bacteria 0 / 100ml
Iron 200 µg/l Total organic Carbon (TOC) no abnormal change
Manganese 50 µg/l Turbidity Acceptable to consumers and no abnormal change
affected by Ozone
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Ozone for Drinking Water Treatment
World‘s Largest O3 System (PDO Series)
PDO Series – O3 System
COD Series - Ozone Destruct Units
Oxidation of metals as iron and manganese
Removal of color
Oxidation and removal of taste & odor Oxidation and removal of algae
Oxidation of Total Organic Carbon (TOC) Oxidation and reduction of contaminants
Primary disinfection
Oxidation of ammonia by nitrification
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Advanced Drinking Water Treatment Plant for Surface Water (without GAC)
flocculation basin
sedimentation basin
pre- oxidation PRE -OZONATION
chemicals
ozone contact tank clear water tank
INTER-OZONATION
Sand Filtration
Final desinfection CHLORINE
Case Study DWTP Langenau 37 years successful use of ozone
• First ozone system in 1977 – 4 kg/h from air • Extension 1991 – 2 x 10 kg/h from air • Replacement of first unit 2005 – 22 kg/h from LOX
Rebuilding of the existing units with new instrumentation Elimination of inefficient thermal ozone destructors
• Replacement of the second generation systems 2012/2013 2 x 12,5 kg/h from LOX
Case Study DWTP Langenau 37 years successful use of ozone
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- BASF AG - Installation of equipment (1 x 25 kg/h @ 12 wt%)
Process Water International companies trust WEDECO
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Clients: - chemical/ pharmaceutical companies - cosmetic - food processing
Application: - stabilise process water
- disinfection of water - avoid biofilms in pipes / surfaces - O3 + UV (residual ozone destruction)
Generator: Modular HC / GSO
OCS System
Summary - Benefits of Ozone
Well-proven Process
Has been used in water treatment for over hundred years
Safe Process
No chemical storage required
Redudant safety mechanisms to protect the system
Safety monitors for protection of labour
Easy Process By means of intelligent process controls automation to a large extend
Environmental process No chemicals No chlorinated by-products Oxygen as the only waste product
Economical process Considerable Efficiency increase within the last 30 years
By means of low maintenace & high quality systems
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End of presentation
Thanks for your interest !
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