meteor ifas - remove carbon and nitrogen wastewater using a very compact solution
DESCRIPTION
Biological purification of wastewater by combined culturesTRANSCRIPT
Meteor™-IFASBIOLOGICAL PURIFICATION OF WASTEWATER BY
COMBINED CULTURES
REMOVE CARBON AND NITROGEN
WASTEWATER USING A VERY
COMPACT SOLUTION
URBAN
WASTEWATER
P-P
PT-E
R-0
05-E
N-1
107
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CONTENTS
� Meteor™ Range
� The Meteor™-IFAS Model
� Operating Principle
� Components Parts of Meteor™-IFAS
� Meteor™-IFAS in the Treatment Lines
� The Advantages of Meteor™-IFAS
� Some References
� Case Study: Groton, Connecticut, USA
Urban
Wastewater
Meteor™
IFAS
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Meteor™RANGE
As part of biological treatment processes, Meteor™ is designed for purifying wastewater using mixed cultures.
Meteor™
IFAS
Meteor™RANGE
ModelsSpecific features of the process
Preferential PositioningFor new plants
Activated sludge concentration
(biological tank)
Advantages
MBBRBiofilm Culture
(no AS)NTK 400 mg/L
• Extremely compact• Separation (CMDF – DAF)• Major loading fluctuations
IFASWith activated
sludge recirculationNGL 2 g/L
• Mixed culture – Less medium than for MBBR
• Rehabilitation – enhances treatment quality
Urban
Wastewater
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INNOVATION
An intermediary (combined cultures) solution combining the advantages of fixed-film culture (like biofiltration) and suspended growth technology (like activated sludge).
• Meteor™-IFAS is designed for treating carbon and nitrogen in wastewater.
• It is the model based on a biological process with fixed culture on mobile carriers (IFAS = Integrated Fixed Film Activated Sludge).
• It fits any size of facilities.
• It can be used for the treatment or raw water from urban areas and the pretreatment of industrial water .
THE Meteor™-IFAS MODEL
Meteor™
IFAS
Urban
Wastewater
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OPERATING PRINCIPLE
• Treatment of carbon is made through suspended growth (actviated sludge) while the nitrogen treatment is made through attached growth: two different types of biomass (flocculated biomass and attached biomass) coexist within the same reactor.
Meteor™
IFAS
Urban
Wastewater
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Meteor™
IFAS
COMPONENT PARTS–
CARRIERS
3 different carriers for an adaptation to each case.
Meteor 660 Meteor 515 Meteor 450NAME
Urban
Wastewater
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Meteor™
IFAS
COMPONENTS PARTS –
RETAINING SCREEN
���� An environmental protection
• Good mix and good mobility of carriers around the screens.
2 versions:
When Meteor™-IFAS is before a
clarifier: When 2 denitrification and nitrification are adjacent:
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Wastewater
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Meteor™
IFAS
COMPONENTS PARTS–
AERATION
Small bubbles Medium bubbles
���� 2 types of aeration to be adapted to each situation
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Wastewater
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Carbone only No economic value compared with activated sludge.
Nitrification /Denitrification
Meteor™-IFAS IN THE TREATMENT LINES
The configurations are the same as for activated sludge with the exception of sequenced channel that is not compatible with the presence of carriers.
The most widely found layouts are shown below:
Meteor™
IFAS
Urban
Wastewater
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ADVANTAGES OF Meteor™-IFAS
•Compact:Volume needs of the structures are considerably reduced compared to
conventional activated sludge.
•Flexibility:This process supports strong load variations particularly in cold zones
(ex.: mountainous zones)
•Environment:An effluent quality that conforms to the strictest regulations on discharge
while controlling costs.
•Easy to operate:– No load loss or washing,– A high level of automation which gives maximum reliability to the system,– Ease of integration within existing stations,– Ideal of upgrades: raise of the quality level of discharge, as well as the load to be
treated.
Meteor™
IFAS
Urban
Wastewater
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SOME REFERENCES
In operationRehabilitation5,000Proctors Creek, USA
In operationRehabilitation54,000East Providence, USA
PLANT NAMEFLOWRATE
(m3/d)WHY STATUS
Groton, CT, USA 23,000 Rehabilitation In operation
Falling Creek, USA 7,000 Rehabilitation In operation
Meteor™
IFAS
Urban
Wastewater
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CASE STUDY:GROTON, CT, USA
CONTEXT:
• WWTP refurbishment of 18,900 m3/d capacity.
• Client: Groton, Connecticut
• Works: 2007
• Commissioning: 2010
• Issue: To meet Long Island sounds limits by reducing carbon and nitrogen discharge in the existing aeration tank.
DESIGN:
• Meteor™ Capacity: 1,890 m3/h• Number of tanks: 2• Size of anoxic zone: 1,390 m3
• Size of aerobic zone: 2,530 m3
• Biofilm carrier fill fraction: 60% in aerobic zone• Number of cylindrical screens :18 (6 per tank)• Number of anoxic zone mixers: 3