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Ultragreen™
GUARANTEE THE WATER QUALITY BEYOND
THE HIGHEST STANDARDS, EVEN IN THE CASE
OF STRONG SEASONAL FLUCTUATIONS.
BIOLOGICAL PURIFICATION BY ULTRAFILTRATION
FLAT SHEET MEMBRANES. RECOMMENDED
FOR INSTALLATIONS UP TO 100,000 PE.URBAN
WASTEWATER
P-PPT-ER-007-EN-1107
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Urban
Wastewater
• The Challenges facing U.W.W Treatment
• The Choice of Membrane on U.W.W. Treatment
• The Membrane Bioreactor Range
• Membrane Technologies: the Degrémont Choice
• Properties of the Toray Membranes used in Ultragreen™
• Operating Principle
• Advantages of Ultragreen™
• Some references
• Case study: Val d’Arly (73), FRANCE
CONTENTS
Ultragreen™
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Urban
Wastewater
THE CHALLENGES FACING U.W.W. TREATMENT
Increasingly stringent discharge standards• Health & safety (water standards)• Protecting the natural environment (European
framework directive)
Protecting water resources• Reuse (irrigation etc.)
Special limitations• Site limitations (available area)• Rehabilitation limitations• Operating limitations
Ultragreen™
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THE CHOICE OF MEMBRANES ON U.W.W. (1/3)
Cl2
Primary sedimentat
ion
ClarifierBiological TANK
Sand filter
Disinfection
UF
PRE-TREATMENT
PRE-TREATMENT
TANKBiological and membrane filtration
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THE CHOICE OF MEMBRANES ON U.W.W. (2/3)
DYNAMIC SEPARATION PHYSICAL BARRIER
Suspended solids «leakage»
Danger of denitrificationin the clarifier
Control over filtration and of the suspended
solids content in discharges
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Urban
Wastewater
THE CHOICE OF MEMBRANES ON U.W.W. (3/3)
Compact design: • For the same target water quality, membranes can replace
several conventional treatment stages.
Integration:
• Architectural: structures are more compact, so that the
architectural constraints are easier to meet
Performances:
• Membranes form a physical barrier; water quality is
constant and, therefore, unaffected by fluctuating hydraulic
loading.
Ultragreen™
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Urban
Wastewater
THE MEMBRANE BIOREACTOR RANGE (MBR) FOR TREATING WASTEWATER IS AVAILABLE IN TWO VERSIONS IN ORDER TO MEET THE REQUIREMENTS OF ALL CLIENTS.
THE MEMBRANE BIOREACTOR RANGE
In order to meet market demands and the specific requirements set in technical specifications, in future, Degrémont will deploy two complementary membrane technologies:
Ultrafor™Ultragreen™
Ultragreen™
Flat SheetMembranes
Specificprocess features
Preferential application
THE MBR RANGE
15 g/L
Plant SizeModels Maximum concentration of sludge in membrane tank recommended
Ultragreen™
Hollow fibersOut /In filtration
No limitsUltrafor™ 10 g/L
TORAY
Membrane manufacturer
GE
0 to 100,000 p.e.
0 to 20,000 m3/d
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TECHNOLOGIES: THE DEGREMONT CHOICE
�2 complementary technologies that still form
part of the ultrafiltration sector
PLATES
Membrane density
Backflushing
Concentration-related flow
Membrane energy costs(low concentration)
Flexibility(small plants)
Lower pre-treatment requirements
Simplicity
Maximum sludge concentrationIn membranes
Membrane energy costs(high concentrations)
Layout (major plants)
HOLLOW FIBERS
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TORAY: A TRUSTED NAME IN ULTRAFILTRATION
RO/NF for Desalination UF HF Membrane
“Torayfil (PAN)”
UF/MF HF Membrane
“PVDF membrane” PVDF UF for MBR
Trihalomethanes
Mem
bra
ne
Tar
get
of
Sep
arat
ion
0.001μμμμ m 0.01 μμμμ m 0.1 μμμμ m 1μμμμ m 10 μμμμ mSize
Na+, Cl- Ions
Pesticide, Organic Material
Virus
Bacteria
CryptosporidiumColiform
Ca2+, Mg2+, SO42 - Ions
NF(Nano-Filtration)
RO(Reverse Osmosis)
UF(Ultra-Filtration) MF
(Micro-Filtration)
Ion, small molecule PolymerColloid
SiltTrihalomethanes
Mem
bra
ne
Tar
get
of
Sep
arat
ion
0.001μμμμ m 0.01 μμμμ m 0.1 μμμμ m 1μμμμ m1μμμμ m 10 μμμμ mSize
Na+, Cl- Ions
Pesticide, Organic Material
Virus
Bacteria
CryptosporidiumColiform
Ca2+, Mg2+, SO42 - Ions
NF(Nano-Filtration)
RO(Reverse Osmosis)
UF(Ultra-Filtration
)MF
(Micro-Filtration)
Ion, small molecule PolymerColloid
Silt
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Ultragreen™ : THE TORAY MEMBRANES
• Submerged flat sheet membranes
• Filtration by gravity suction or pumping
• Continuous aeration throughout filtration
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Ultragreen™ : THE MODULES (1/3)
Space separating the membranes: 7.5mm
13.5mm
6.0mm
Aeration block
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Ultragreen™ : THE MODULES (2/3)
• Reference: TMR140-100
• Number of plates: 100
• Membrane surface area: 140 m2
• Height: 2,100 mm
• Length: 1,620 mm
• Width: 565 / 810 mm
Aeration block
Membrane block
Permeate collectors
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• Reference: TMR140-200D
• Number of plates: 200
• Membrane surface area: 280 m2
• Height: 4,160 mm
• Length: 1 620 mm
• Width: 565 / 810 mm
Ultragreen™ : THE MODULES (3/3)
�One single aeration unit for the
entire aeration block
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Urban
Wastewater
−An ultrafiltration membrane (0.08 µm)
−Tight distribution of pore sizes
Pore diameter (µm)
Pore
density
(10
12
units.m
-2)
THE TORAY MEMBRANES (1/3)
Ultragreen™
�Clogging controlled
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Urban
Wastewater
Mem
bra
ne
Mem
bra
ne
TORAY
THE TORAY MEMBRANES (2/3)
Ultragreen™
�Clogging controlled
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Urban
Wastewater
•HIGH PORE DENSITY
•HYDROPHILIC MEMBRANE
���� High permeability
���� Low trans-membrane pressure
THE TORAY MEMBRANES (3/3)
Ultragreen™
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LINES - ULTRABOX
1 Ultrabox – 1 short line (≤≤≤≤ 8 module places)
Cross section
Viewed from above
Permeate outlet
Permeate outlet
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Ultragreen™ : A LAYOUTEXAMPLE
Aeration network
blowdown
Collectors
Aeration network
Example with 2 reactors:
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Urban
Wastewater
Ultragreen™ ADVANTAGES
COMPACT PRODUCT:
• Suppression of clarifiers
• SS concentrations in the bioreactor are higher than with conventional AS
• No denitrification required if the discharge permit allows it
• Cost of civil works is reduced– Landscape integration is easier because of compactness
TREATED EFFLUENT QUALITY: • Assimilation of the pollution by the biomass + membrane
filtration that stops all suspended solids
• Better quality effluent, with consistency• Severe discharge levels in TSS, BOD5, COD, TN, TP
(sensitive areas)
• Discharge permits with disinfection requirements
Ultragreen™
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SOME REFERENCES
PLANT NAME COUNTRY CAPACITY (PE)START-UP
DATE
Crest Voland France 5,600 2011
St Barthélémy France 3,500 2012
Cogolin France 6,000 2011
Pierre Lenquette New Caledonia 2,500 2012
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CASE STUDY:VAL D’ARLY (73), FRANCE
CONTEXT:
• Construction of a 28,000 p.e. wastewater treatment plant
• Client: Syndicat Intercommunald’Eau Potable et d’Assainissementdes Moulins (SIEPAM)
• To be commissioned mid 2011
Specific features of the project:
– Its proximity to the village–Protecting the Arly (river)–High seasonal variations–Operating authority–Sustainable Development Aspect
DESIGN :
• Treatment line: – Fine bar screen (6 mm)– Grit – Grease removal– Straining (2 mm)– Distribution structure– Biological tanks (Incorporated buffer
tank)– Ultragreen™
• Water system running in gravity mode
• Number of Ultragreen™: 4 lines of membranes in 4 reactor tanks including one on total standby
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CASE STUDY:VAL D’ARLY (73), FRANCE