mekorot - separations overview (2010).ppttdrl.co.il/upload.tdrl- degtec seminar - separations...

SeparationsOverview

TDRL Seminar

Presented by: Infilco Degremont

HEADWORKS | BIOLOGICAL | SEPARATIONS | MEMBRANES | OXIDATION-DISINFECTION | BIOSOLIDS | INDUSTRIAL SYSTEMS WWW.DEGREMONT-TECHNOLOGIES.COM

2

North American Footprint

INFILCO DEGREMONTRICHMOND, VA181 EMPLOYEES

WPTSALT LAKE CITY, UT132 EMPLOYEES

OZONIA NANEW JERSEY71 EMPLOYEES

DEGREMONT LTDMONTREAL, QC27 EMPLOYEES

ANDERSONDUNDAS, ON 60 EMPLOYEES

5 companies ● 471 employees


Over 114 Years of Providing Solutions

Over 114 Years of Providing Solutions

Wide Range of Treatment Solutions

- Headworks

- Disinfection

- Biosolids

- Biological

- Separations

- Reuse

Clarification Technologies:

� SuperPulsator – sludge blanket

� DensaDeg – high-rate solids contact

� AquaDAF – dissolved air flotation

Filtration Technologies:

� Greenleaf – cluster filters

� ABW – automatic backwash


IDI Clarifier History

Process TypeSurface Loading

RateNo. of

InstallationsYear Developed

Accelator® Solids Contact 0.75 - 2.5 gpm/ft2 ~1780 1940’s

Pulsator® Sludge Blanket 1.0 - 1.25 gpm/ft2 ~84 1955

PulsaPak® Sludge Blanket 1.5 gpm/ft2 ~27 1970’s

SuperPulsator® Sludge Blanket 2.0 - 4.0 gpm/ft2 ~195 1982

DensaDeg®High-Rate Solids

Contact8.0 – 12.0 gpm/ft2

~225 1985

AquaDAF® High-Rate DAF8.0 – 16.0 gpm/ft2

20 2000

AquaDAF®


• Proven technology for 30+ years

• Optimization of conventional equipment to increase efficiency

• High rates: 30 to 40 m/h

• Perfect process to efficiently remove low density particles

• Perfect process for membrane pretreatment - NO POLYMER

AquaDAF® Advantages


AQUADAF APPLICATIONS

• Clarification (low turbidity/TSS)

• High TOC, color waters

• Low density solids

• Algae removal

• Cold waters; Thermal variation

• Membrane filtration pretreatment

• Desalination pretreatment

• Tertiary Phosphorous Removal (w/ filters)


DAF Process OverviewHigh-Rate Dissolved Air Flotation – Internal System

Raw Water Inlet & Distribution - Following in-line mixing

Primary Flocculation3-5 min. @ 80-100 G

Secondary Flocculation3-5 min. @ 30-60 G

Air-WaterDispersion Zone

Accumulated Sludge Layer

Flotation Zone

Auto Effluent Weir

Effluent Channel


DAF Process OverviewHigh-Rate Dissolved Air Flotation – Operating

Principles

Recycle Stream:

• Recycle flow: 8-10% of throughput

• Operating Pressure: 5-6 bar

• Unpacked Saturator Vessel

• Injection: Proprietary nozzles

Micro-Bubble Production:

• Air Blanket: Milky appearance

• Solids adhere to bubbles and float to surface

• Continuous production of air blanket


Hydraulic:

• Flood DAF basin with automatic effluent weir

• Sludge wash line around periphery of DAF basin

• Simple, less mechanical approach

• Water loss: 0.75 to 1.5%

• Solids concentration: < 0.3 to 0.5%

Mechanical Scraper:

• Mechanical scraper mechanism

• Mechanical, thickening approach

• Water loss: < 0.5%

• Solids concentration: 2-4%

DAF Process OverviewSludge Removal Options

DAF Process OverviewSludge Removal Options


Recent AquaDAF Successes

• SSJID, CA – Pretreatment to membranes (6300 m3/h)

• Haworth, NJ – Algae Removal of Lake water: (33,000 m3/h)

• Hudson, MA - Tertiary phosphorous removal. Less than 0.1 mg/L DAF goal


Haworth, NJ (32,700 m3/h)

DensaDeg Clarifier


• Product developed in the early 1980’s by Degremont

• ~250 installations

• First installation: 1984

• Diversified Applications

INDUSTRIAL - 46%

WASTEWATER - 35%

WATER - 19%

ClarificationSofteningOrganics RemovalFilter/Membrane Backwash Recovery

Primary ClarificationTertiary Phosphorus RemovalHigh Rate CSO/SSO

ClarificationSoftening/Silica RemovalMetal PrecipitationFluoride RemovalFGD Wastewater

History & Applications


DENSADEG ADVANTAGES

•Flocculation + Clarification + Thickening in one unit

•2 – 4% Solids Production•No problems with large variations in influent conditions

•High Rates: 20 – 24 m/h (clarification)24 – 36 m/h (softening)70 – 100 m/h (CSO)

•Unit capacity: 160 – 4000 m3/h


Turbine Draft Tube

Coagulant

Polymer

FlowSplitter Sludge

Recycle Pump

Sludge Recirculation

Sludge Blowdown

Settling Tube Assembly

Settling Tube Support

Recirculation ConeLifting Assembly

LaunderAssembly

Reactor Turbine Drive

Rapid Mix

Reactor

Clarifier / Thickener

Dynamic Separation & Clarification


CAPACITY per UNIT:

160 to 4000 m3/h (concrete)

25 to 4000 m3/h (steel)

RAPID MIX RETENTION:

2 to 3 min (clarification)

SLUDGE RECYCLE:

3% to 6%

SLUDGE BLOWDOWN:

2% to 4% (clarification)

5% to 20% (softening)

LOADING RATE:

20-24 m/h (clarification)

24-36 m/h (softening)72-108 m/h (CSO)

REACTOR RETENTION:

~8-10 min

CLARIFIER RETENTION:

~ 25-30 min

Unit Design Considerations


• Toledo, OH – Largest HRC for CSO (36,500 m3/h), design velocity >100 m/h

• Wadi Ma’in, Jordan – Backwash waste recovery system followed by UV, 700 m3/h

Densadeg Performance

SuperPulsator

Sludge Blanket Clarifier


SuperPulsator Process Sludge Blanket Clarifier – Complete System

DistributionLaterals

SettlingPlates

CollectionLaterals

VacuumChamber

Vacuum PumpVent Valve

BlowdownPipes

CollectionChannel

DistributionChannel

Concentrator


SuperPulsator ApplicationsPulsed Sludge Blanket Technology

• Clarification only - New or Retrofit

• Typical Loading rates of 5-10 m/h

• Low to high Turbidity (5-1000+ NTU)

• Low to very high Color (1-100+ PCU)

• Organic carbon removed with PAC

• Membrane Pretreatment w/ no polymer - low rates


• Pulsed flow through the basin - created by vacuum pump

• Constant upflow velocity over entire surface area

• Combined flocculation/clarification in one basin

• Internal sludge concentration and automatic sludge removal

• No submerged moving parts and corrosion resistant internals

SuperPulsator Operating PrinciplesPulsed Sludge Blanket Technology


SuperPulsator Process Sludge Blanket Clarifier – The Pulse

Vacuum

Chamber


Open

Sludge Blanket

Expansion

Vacuum

Chamber


Closed

Sludge Blanket

Contraction

Pulling a Vacuum: 40 to 50 secondsVenting: 8 to 12 seconds

Periodic sludge discharge

0.2 to 0.5% solids


SuperPulsator Process Sludge Blanket

10 feet of a filtering sludge blanket

7 feet of a clarification zone


SuperPulsator Process OverviewMyrtle Beach, SC


Singapore, Chestnut WTP

Plant Flow: 17,000 m3/hInfluent Turbidity: 5-10 NTUEffluent Turbidity < 0.7 NTUCoagulant: 30 ppm AlumPolymer: 0.4 ppm


Process HighlightsAdvantages

SuperPulsator ADVANTAGES

− Proven Technology – hundreds of operating installations

− No submerged moving parts

− Sludge Blanket = 10’ of Buffering Capacity

− “High Rate” Process with Detention Time

− Extremely Low Energy Required

− Membrane pretreatment without polymer (reduced loading rates)

− Low capital cost - $


Pulsapak®

Package Treatment Plant


Pulsapak® Design Considerations

Clarification or Clarification & Filtration

Little to no civil construction

8 Sizes between 30 – 160 m3/h

Typical Loading rates of 1.5 gpm/ft2 (3.6 m/h)

Low to high Turbidity (5-1000+ NTU)

Low to very high Color (1-100+ PCU)


Vacuum Pump

Vacuum VentVacuum Chamber

Clarified Water Collection Laterals

Clarified WaterFilter Inlet

WashwaterOutlet Trough

Underdrain

Sand

Filter Drain

Anthracite

Stilling Plates

Sludge Blowdown

Settling Tubes

Coagulated Water Inlet

Raw Water Inlet

Sludge Blanket

Backwash Line

Waste Piping

Effluent Header

Filter-to WasteLine

Air Line

Distribution Laterals

Pulsapak®

Package Treatment Plant


Pulsapak® P-100 (160 m3/h)(Lake Murray, SC)

Pulsapak® P-100 (160 m3/h)(Lake Murray, SC)


Pulsapak® P-18 (50 m3/h)(Canada)

Pulsapak® P-18 (50 m3/h)(Canada)

The ABW®Filter


The ABW®Filter

•An American Invention, Introduced Circa 1928, by The Hardinge Co. of York, PA

•Acquired and marketed by Environmental Elements Corp, of Baltimore, MD until 1987

•Acquired and now marketed by Infilco Degremont, Inc. of Richmond, VA

• In excess of 2,000 units are currently in operation in the United States and Canada.

•Units are also in operation in: UK / Switzerland / Japan / Korea


ABW Filter Advantages

• Low head loss across filter 300mm

• No pipe gallery

• No need for filter redundancy

• No large backwash pumps

• No backwash tank needed

• Minimal energy consumption


Typical Applications

• Tertiary Treatment• Reuse• Potable Water• Industrial Process and Waste


Filter Design

ApplicationApplication Design RateDesign Rate Typical MediaTypical Media

ConfigurationConfiguration

Wastewater

Wastewater

Reuse

Potable Water

275mm coarse media

275mm fine media or

deeper media.6-7 m/h

5 m/h nominal

10 m/h peak flow

5 m/h nominal

10 m/h peak flow

275mm coarse media or

400mm dual media (if

stringent guarantees are

required)


Typical Concrete ABW


Typical Package ABW


Typical Filter Layout

Influent Channel

UnfilteredWater

Effluent Channel

Influent Channel

Slide Gate (Optional)

Influent

Weir

EffluentWeir

FilteredWater

EffluentChannel


The ABW®Filter

Washwater

Trough

Washwater

HoodCompartmentalized

Filter Bed

Effluent

Channel

Control

Panel

Backwash

Assembly

Influent

Ports

Influent

Channel


Backwash Mode

A B C D E

Entrapped

Solids

Backwashing

Underdrain

Backwash Direction


ABW Filter Performance Results


Back River WWTPBaltimore MD

Peak Flow: 80,000 m3/h

Greenleaf FilterGravity Cluster

Filter


The Greenleaf Filter Control represents a unique concept for the

control of multiple granular media filters. It eliminates bulky piping

and valves through the ingenious application of siphons.

• Low Maintenance

• Requires Small Footprint

• Low Energy Requirement

• Common Wall Construction

• Excellent Filtered Effluent

• Simple and Effective

Greenleaf Filter OverviewGravity Cluster Filter


• Traditional filter requires significant amounts of: land, large piping and

large, line sized valves.

• A Greenleaf type filter

has a footprint that is

33% smaller than a

conventional filter and

gallery.

Greenleaf Filter OverviewGravity Cluster Filter


Greenleaf Filter OverviewGravity Cluster Filter – Design Considerations

• Cluster-type filter � 4 cells grouped around central core

• Customary design - Filter/backwash rate, media depth, etc. are practiced

• Essentially 4 conventional filters


Filter Cell

Forebay

Underdrain

Common Filtered

Water Chamber

Top of Basin

Pretreated Water Flume

Vacuum Tank

Inlet Weir Chamber

Inlet Siphon Valve

Effluent

Control

Weir

Filtered Water toStorage or Service

Low

High

Wash Trough

Cell

Isolation Line

Drain

Filter to Waste Line

Isolation Valve

3 - Way Valve (Actuates Inlet Siphon Valve)

Greenleaf Filter OverviewNormal Filter Operation


Filter Cell

Forebay

Underdrain

Common FilteredWater Chamber

Top of Basin


Vacuum Tank

Inlet Weir Chamber

Inlet Siphon Valve

Effluent

Control

Weir


Low

High

Drain

Wash Trough

Cell Isolation Line



Backwash Siphon

Backwash

Waste Section Isolation Valve

Greenleaf Filter OverviewMaximum Headloss in One Filter Cell


Filter Cell

Forebay

Underdrain

Common Filtered

Water Chamber

Top of Basin


Vacuum Tank

Inlet Weir Chamber

Inlet Siphon Valve

Effluent

Control

Weir


Low

High

Wash Trough

Cell

Isolation

Line

Drain


Isolation Valve


Greenleaf Filter OverviewFilter Cell Drain


Filter Cell

Forebay

Underdrain

Common Filtered

Water Chamber

Top of Basin


Vacuum Tank

Inlet Weir Chamber

Inlet Siphon Valve

Effluent

Control

Weir

Filtered Water to

Storage or Service

Low

High

Wash Trough

Cell

Isolation

Line

Isolation Valve

Drain


BW Solenoid Valve (actuated)

Backwash Siphon

Greenleaf Filter OverviewBackwash Initiation


Filter Cell

Forebay

Underdrain

Common Filtered

Water Chamber

Top of Basin


Vacuum Tank

Inlet Weir Chamber

Inlet Siphon Valve

Effluent

Control

Weir

Filtered Water to

Storage or Service

Low

High

Wash Trough

Cell

Isolation

Line

Isolation Valve

Drain


BW Solenoid Valve

Backwash Siphon

Greenleaf Filter OverviewBackwash


Filter Cell

Forebay

Underdrain

Common Filtered

Water Chamber

Top of Basin


Vacuum Tank

Inlet Weir Chamber

Inlet Siphon - ACTUATED

Effluent

Control

Weir

Filtered Water to

Storage or Service

Low

High

Wash Trough

Cell

Isolation

Line

Isolation Valve

CLOSED

Drain

Filter to Waste Valve

OPEN

Greenleaf Filter OverviewFilter-to-Waste


Filter Cell

Forebay

Underdrain

Common Filtered

Water Chamber

Top of Basin


Vacuum Tank

Inlet Weir Chamber

Inlet Siphon Valve

Effluent

Control

Weir


Low

High

Wash Trough

Cell

Isolation

Line

Isolation Valve

Drain


Greenleaf Filter OverviewReturn to Service


Greenleaf Filter Advantages

• Greenleaf siphons for flow split and backwash removal ELIMINATE large inlet & backwash valves (8 per filter)

• All siphon solenoids accessible from operating platform

• Small foot print due to compact arrangement - 33% less space than conventional filter - no large pipe gallery

• Prefabricated components => Simple Installation

• Impossible to shock or surge filter

• Small clearwell - Self Backwashing

• Unlimited media/underdrain configurations

Questions?

mekorot - separations overview (2010).ppttdrl.co.il/upload.tdrl- degtec seminar - separations...

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