PowerPoint - Wastewater Treatment Technologies

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Transcript PowerPoint - Wastewater Treatment Technologies

Wastewater Treatment
Technologies
• Bioremediation
• Coagulation/Floc
• Membrane
Filtration
•
•
•
•
Oxidation (Ozone)
Thermal Oxidation
Encapsulation
Evaporation
• Filtration/Gravity
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Aerobic Plant
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Aerobic Plant Factors
TO MAINTAIN LIFE
 pH






B.O.D.
C.O.D.
Suspended Solids
Settable Solids
Fats, Oils, & Greases
Nutrients - nitrogen & phosphorous
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Membrane Filtration
• Membranes
– Poly material
– Layered to generate
surface area
– Very small filtration
levels
– pH specific on most
– Susceptible to
clogging
– Maintenance intensive
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What is oxidation?
• Simply put: The adding of an oxygen
atom
• You are changing the composition of a
molecule in order to change how it
behaves
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What is Ozone?
O1
O2
O3
O2
O1
O2
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O3
Ozone
• The energy stored to create ozone
wants to react by forcing the extra
oxygen atom on an organic molecule
• The resulting reaction is CO2 + H2O
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Oxidizers
• Fluorine (F )
•
•
•
•
•
Hydroxyl Radical (OHo)
Ozone (O3)
Chlorine (Cl-)
Bromine (Br )
Hydrogen Peroxide (H2O2)
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Oxidizers
• These oxidizers do not contribute to
TDS
– Hydroxyl Radical (OHo)
– Ozone (O3)
– Hydrogen Peroxide (H2O2)
– UV light
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What is Catalytic Oxidation?
• A combination of multiple oxidants to
form an hydroxyl radical OHO.
O3
OHO
UV
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H2O2
How is the
Hydroxyl Radical Formed?
H2O2
O3
UV
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Thermo Oxidation
• Thermally destroy
organic
compounds
• Evaporation
process that
completely
removes the water
from the solids.
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Adsorbent Systems
• Clay treatment
– Bentonite
– Emulsified
organics
– Heavy metals
– BOD
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Evaporation
• Reduce water from
stream
• Reduction of
volume for cost
savings
• Natural or man
made
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