Biological purification by ultrafiltration flat sheet membranes. Recommended for installations up to 100.000 PE

1. Ultragreen ™
BIOLOGICAL PURIFICATION BY ULTRAFILTRATION
FLAT SHEET MEMBRANES. RECOMMENDED
URBAN
FOR INSTALLATIONS UP TO 100,000 PE. WASTEWATER
GUARANTEE THE WATER QUALITY BEYOND
P-PPT-ER-007-EN-1107
THE HIGHEST STANDARDS, EVEN IN THE CASE
OF STRONG SEASONAL FLUCTUATIONS.

2. Urban CONTENTS
Wastewater
Ultragreen™
• 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

3. THE CHALLENGES FACING
Urban
Wastewater U.W.W. TREATMENT
Ultragreen™ 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

4. THE CHOICE OF MEMBRANES ON U.W.W. (1/3)
Cl2
Primary Biological Clarifier Sand Disinfection
PRE-TREATMENT
sedimentat TANK filter
ion
UF
PRE-TREATMENT
TANK
Biological and membrane filtration

5. THE CHOICE OF MEMBRANES ON U.W.W. (2/3)
DYNAMIC SEPARATION PHYSICAL BARRIER
Suspended solids Control over filtration
«leakage» and of the suspended
solids content in
Danger of denitrification discharges
in the clarifier

6. THE CHOICE OF
Urban
Wastewater MEMBRANES ON U.W.W. (3/3)
Ultragreen™ 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.

7. Urban THE MEMBRANE BIOREACTOR RANGE
Wastewater
THE MEMBRANE BIOREACTOR RANGE (MBR) FOR TREATING
Ultragreen™
WASTEWATER IS AVAILABLE IN TWO VERSIONS IN ORDER
TO MEET THE REQUIREMENTS OF ALL CLIENTS.
THE MBR RANGE
Preferential application
Specific
Maximum concentration of process Membrane
Models Plant Size
sludge in membrane tank features manufacturer
recommended
0 to 100,000 p.e. Flat Sheet
Ultragreen™ 0 to 20,000 m3/d
15 g/L
Membranes
TORAY
Hollow fibers
Ultrafor™ No limits 10 g/L
Out /In filtration
GE
In order to meet market demands
and the specific requirements set
in technical specifications, in future,
Degrémont will deploy two
complementary membrane
technologies:
Ultragreen™ Ultrafor™

8. TECHNOLOGIES: THE DEGREMONT CHOICE
Membrane density
Layout (major plants) Backflushing
Membrane energy costs HOLLOW Concentration-related
(high concentrations) FIBERS flow
Maximum sludge
Membrane energy costs
concentration
(low concentration)
In membranes
PLATES
Simplicity Flexibility
(small plants)
Lower pre-treatment
requirements
2 complementary technologies that still form
part of the ultrafiltration sector

9. TORAY: A TRUSTED NAME IN ULTRAFILTRATION
Size 0.001μ m 0.01 μ m 0.1 μ m 1μ m 10 μ m
Ion, small molecule Polymer
Polymer
Separation
Colloid
Colloid
Target of
Pesticide, Organic Material Silt
Silt
Trihalomethanes
Coliform
Virus
Cryptosporidium
Na+, Cl- Ions
Ca2+, Mg2+, SO42 - Ions Bacteria
Membrane
UF
RO (Ultra-Filtration
(Ultra-Filtration) MF
(Reverse Osmosis) ) (Micro-Filtration)
NF
(Nano-Filtration)
UF HF Membrane UF/MF HF Membrane
RO/NF for Desalination “Torayfil (PAN)” “PVDF membrane” PVDF UF for MBR

10. Ultragreen™ : THE TORAY MEMBRANES
• Submerged flat sheet membranes
• Filtration by gravity suction or pumping
• Continuous aeration throughout filtration

11. Ultragreen™ : THE MODULES (1/3)
13.5mm
6.0mm
Aeration block
Space separating the membranes: 7.5mm

12. 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
Permeate collectors
Membrane block
Aeration block

13. Ultragreen™ : THE MODULES (3/3)
• Reference: TMR140-200D
• Number of plates: 200
• Membrane surface area: 280 m2
• Height: 4,160 mm
• Length: 1 620 mm
• Width: 565 / 810 mm
One single aeration unit for the
entire aeration block

14. Urban THE TORAY MEMBRANES (1/3)
Wastewater
Ultragreen™
−An ultrafiltration membrane (0.08 m)
−Tight distribution of pore sizes
(1012 units.m-2)
Pore density
Clogging controlled
Pore diameter ( m)

15. Urban THE TORAY MEMBRANES (2/3)
Wastewater
Ultragreen™
Membrane
Membrane
TORAY
Clogging controlled

16. Urban THE TORAY MEMBRANES (3/3)
Wastewater
Ultragreen™
• HIGH PORE DENSITY
• HYDROPHILIC MEMBRANE
High permeability
Low trans-membrane pressure

17. LINES - ULTRABOX
≤
1 Ultrabox – 1 short line (≤ 8 module places)
Permeate outlet
Cross section
Viewed from above
Permeate outlet

18. Ultragreen™ : A LAYOUT EXAMPLE
Aeration
Example with network
2 reactors: blowdown
Aeration
network
Collectors

19. Urban Ultragreen™ ADVANTAGES
Wastewater
Ultragreen™ 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

20. SOME REFERENCES
START-UP
PLANT NAME COUNTRY CAPACITY (PE)
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

21. CASE STUDY:
VAL D’ARLY (73), FRANCE
CONTEXT: DESIGN :
• Construction of a 28,000 p.e. • Treatment line:
wastewater treatment plant – Fine bar screen (6 mm)
– Grit – Grease removal
• Client: Syndicat Intercommunal – Straining (2 mm)
d’Eau Potable et d’Assainissement – Distribution structure
des Moulins (SIEPAM) – Biological tanks (Incorporated buffer
tank)
– Ultragreen™
• To be commissioned mid 2011
• Water system running in gravity mode
Specific features of the project:
– Its proximity to the village • Number of Ultragreen™: 4 lines of
– Protecting the Arly (river) membranes in 4 reactor tanks
– High seasonal variations including one on total standby
– Operating authority
– Sustainable Development Aspect

22. CASE STUDY:
VAL D’ARLY (73), FRANCE