Removal of suspended solids and associated pollutants by immersed disk filtration

1. Compakblue™
REMOVAL OF SUSPENDED SOLIDS AND
ASSOCIATED POLLUTANTS BY IMMERSED DISK REUSE
FILTRATION
WASTEWATER REUSE IN A COMPACT
TREATMENT SOLUTION
P-PPT-RU-001-EN-1107

2. REUSE CONTENTS
Water Reuse Challenges
Compakblue™
A Required Water Quality that meets Uses
Disk Filtration Range
Compakblue™ Operating Parameters/Conditions
Compakblue™ Filter
Operating Principle
Cloth Filtration Technology (Mecana)
-strainer Filtration Technology (Nordic Water)
To summarize, the Compakblue™ Advantages
A cloth Filtration Case Study:
Monchy-Saint-Eloi (60), France
A -strainer Case Study:
Auxi-le-Château (62), FRANCE
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3. REUSE
WATER REUSE CHALLENGES
Compakblue™
• To preserve the natural environment
• To manage water resources
• To relieve the traditional resources
• To propose alternative water resources
Countries that are concerned: the United States, Australia, Spain,
Middle-East Countries, North Africa…
Regulations:
• No real consensus in the world
• Many countries with the greatest water stress
have developed standards or regulations to
develop Reuse.
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4. A REQUIRED WATER QUALITY THAT
MEETS USES, APPROPRIATE TREATMENTS
Non-food Food Crop
Crop
Specific
Crop
Oxidation/Adsorption…
Irrigation of
Membrane Filtration ….
non public areas
Reverse Osmosis,
Media Filtration
Indirect
Potability
Treated
Irrigation of green secondary
spaces, golf
UWW
Industries
Unrestricted
use in urban
areas
Process
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5. REUSE
DISKS FILTRATION RANGE
Compakblue™ Compakblue™ is the name for Degrémont’s disk filtration systems
used in wastewater re-use applications.
Two versions are available: a -strainer filtration version, developed
by Nordic Water, and a cloth filtration version, developed by Mecana.
Compakblue™ Product
Number of Output Quality
Models Type of filtration Technology
disks/filter (SS as 95%tile)
Specific 100%
Mecana 2 to 12 < 6 ppm
fabric submerged
60%
Nordic Water -strainer < 10 ppm
4 to 28 submerged
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6. Compakblue™ OPERATING
REUSE
PARAMETERS/CONDITIONS
Compakblue™
Reduction of SS
Treatment objective
and the particle pollution
After the secondary clarifier SS <35ppm
Between <3 mg/l SS on the average (<6 in 95%ile)
Treated water quality
and <5 mg/l SS on the average (<10 in 95%ile)
Compakblue™ Water Treated
in the treatment line inlet water
Biological Clarifier Tertiary Filtration
Treatment Compakblue™
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7. REUSE
Compakblue™ FILTER
Compakblue™
• It complements the media filtration technologies
for the reduction of Suspended Solids in tertiary
filtration.
• Its uniqueness lies in the standardization of its
production and its compact size.
• Water to be filtered passes through the disk filters
that that hold impurities.
• The tank, available in both a steel or a concrete
version, contains the disks that are arranged on a
central tube.
• Disks only run during the washing phase.
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8. REUSE OPERATING PRINCIPLE
Compakblue™
• Compakblue™ is a constant-rate variable-head
gravity filter without level regulation.
• The washing is automatic, it is triggered when
the water level is exceeded.
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9. CLOTH-FILTRATION TECHNOLOGY
Compakblue™ is a mechanical filter developed by the Mecana
Umwelttechnik AG Company, in Switzerland; it is the subject
of patents (EP 0958 028).
The washing of disks is short
Filtration direction
and frequent.
– It is carried out disk-by-disk with Water to
Filtered water
be filtered
a suction system for materials
Pile fabric seen under
retained by the pile fabric. the microscope
The filtration is continuous;
no stopping during the cleaning.
Cleaning
system by
suction
OUT / IN FILTRATION
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10. µ-STRAINER FILTRATION TECHNOLOGY
The washing of disks is short
and frequent.
– Water to be filtered is fed into the
central cylinder, penetrates between
the disks through openings and
travels through the filtering medium
on the sides of the disks.
– The dirty water is collected in a
trough inside the central cylinder.
The filtration is continuous;
no stopping during the cleaning.
IN / OUT FILTRATION
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11. TO SUMMARIZE, THE ADVANTAGES OF
Compakblue™
An alternative to sand filtration when the
Civ. Eng. cost is high
– Saves 4 times the surface area,
– Preserves natural landscapes,
Easy to install and operate
– Integrating systems in tanks
A safe filtration process
– Immersed or semi-immersed disks,
– Helminth eggs content < 0,1/L in accordance
with the WHO (World Health Organization)
recommendations.
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12. CLOTH FILTRATION CASE STUDY:
MONCHY-ST-ELOI (60), FRANCE
CONTEXT:
• WWTP of 30,000 PE
• Objective: Discharge in sensitive area
• Start-up Date: October 2009
DESIGN:
– 2 filters of 6 disks
– Total filtering surface area: 60 m²
– Disks diameter: 2,10 m
– Concrete tank
– Treatment line: activated sludge tank,
secondary clarifier, Compakblue™ Filter.
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13. µ-STRAINER FILTRATION CASE STUDY:
AUXI-LE-CHÂTEAU (62), FRANCE
CONTEXT:
• WWTP of 4,000 PE
• Objective: discharge into sensitive areas (marina and
then a protected estuary)
• Start-up date: beginning of 2011 Disk filters
DESIGN:
– 1 filter of 3 disks Water inlet
– Total filtering surface area: 8,4 m²
– Flow: 60m3/h
– Disks diameter: 1,90 m
– Steel Tank
– Treatment line: activated sludge tank,
secondary clarifier, Compakblue™ Filter Treated water
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