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ABS SOLUTIONS FOR

MIXING AND AGITATION.

www.absgroupusa.com www.absgroup.ca


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YOU WANT MOVEMENT. WE ADD DIRECTION.

Wastewater treatment plant operators around theworld ace dramatic increases in the cost oenergy and are under constant pressure to reducethe amount o energy consumed and with it thelevel o CO2 emissions into the atmosphere. AtABS our goal is to help these operators reducetheir energy costs and improve the reliability othe treatment process.

ABS has one o the widest product portolios in the world or mixing and

agitation. To be able to oer the optimal solution to every customers

needs we have both submersible and dry-installed equipment. Our

hands-on experience together is put to work in the R&D process to

make sure ABS mixers and agitators are the best choice when you

look at the total cost throughout the entire lie cycle o the equipment.The modular ABS mixer system in combination with exible mixer

positioning and easy installation guarantees a solution with the

optimum lie cycle cost.

Working together in the selection process

ABS has its own sotware tool or equipment selection. The program

utilizes our vast experience rom more than 150,000 operational

installations. Customers can be sure o an optimal solution based on

a consideration o the ollowing actors:

Purpose o application

Tank shape

Tank dimensionsMedium to be mixed

Viscosity, specifc weight and dry-matter content etc.

Temperature

ABS sotware or mixer selection.


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Jet flow Bulk flow

Bulk flow

Bulk flow

Thrust

The mixer thrust

The mixer thrust is an important parameter in the determination o

the mixing result and thereore o major importance in the selection

process. The perormance o a submersible mixer can be expressed

by thrust (N) or the ow capacity (l/s) that it produces. All mixing

applications require a certain degree o turbulence and bulk

ow which is generated by the propeller jet reaction orce the

mixer thrust.

The target when designing a mixing application is to achieve optimalbulk ow, since with an optimal bulk ow the entire contents o the

tank are in motion. The bulk ow is a unction o the impeller jet ow

which is closely related to the mixer thrust. Consequently the mixer

thrust together with the mixer positioning orm the basis o good

mixer selection.

Thrust measurement acility regarding ISO 21630.

Relation o thrust to bulk ow.


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DIFFERENT APPLICATIONSNEED DIFFERENT SOLUTIONS.

A) Pre-treatment

NeutralizatioN

Neutralization is the pH adjustment process

in the pre-treatment stage achieved by ash

and contact mixing o added chemicals in

the neutralization tank. ABS Scaba agitators

acilitate the proper mixing o chemicals

and wastewater.

FlocculatioN

Flocculation is a chemical/physical process

which is perormed during the biological

pre-treatment process to remove unwanted

chemicals. Gentle mixing characterized

by low shear orces is achieved by theABS Scaba agitators. They ensure good

mixing o the occulants and the liquid while

at the same time preventing sedimentation.

B) Equalization

The objective o mixing during the equali-

zation process is to blend the wastewater

and to prevent sedimentation, stratifcation

and odour ormation. The ABS submersible

1 ABS submersible mixerRW 200-280

2 ABS submersible mixer

RW 480


RW 300-900

4 ABS fow booster

SB 900-2500


SB 1200 KA

6 ABS Scaba agitator

mixers RW are the best solution, since the

water levels in this part o the process

are oten very low and have a tendency

to requently change. Which RW model to

use is determined by the intensity o mixing

and ow required.

C) Selector (Contact zone)

In the selector tank the aim is to control and

limit the growth o flamentous bacteria,

which enhances the sludge sedimentation

ability. Submersible mixers and Scaba agi-

tators are used or intensive (ash) mixing

o the re-circulated sludge and wastewater.

D) Biological process

(secondary and tertiary)

aNaerobic aNd aNoxic

In the anaerobic and anoxic tanks the

biomass has to be kept in suspension in

order to avoid the risk o the sludge settling

and to maximize the active volume. The

target is to provide good contact between

the inlet wastewater, re-circulated sludge

and biomass. Both the dry installed ABS

Scaba agitators and the submersible mixers

can be used to provide sufcient mixing

energy to keep the biomass in suspension.

Some plants use a moving bed bioflm

reactor (MBBR) with plastic carriers in the

biological process. The ABS submersible

mixer SB 1200 KA has been specifcally

developed or this process.

NitriFicatioN

In all tanks where a simultaneous DN-N

process takes place the ABS ow booster

SB generates an optimal and efcient mixing

level when the aeration system is inactivei.e. when denitrifcation takes place.

deNitriFicatioN

In the denitrifcation process the ow

generated by the ABS ow booster SB

prevents settlement and achieves good

biomass mixing and circulation. It is critical

that the units are sized and installed in

the correct way to avoid turbulence.

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2 3 6

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1 3 4

A

B

E


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PhosPhate reMoVal

The horizontal ow generated by ABS ow

boosters SB efciently creates an even

distribution o the chemical occulants

introduced into the wastewater to produce

ocs suitable or catching the phosphates.

E) Chemical mixing

The activated sludge must sometimes be

mixed with chemicals beore it enters the

secondary sedimentation tank. Chemicals

are or example used to remove phosphates

or to make occulants settle more rapidly.

ABS Scaba agitators can be used success-ully to mix these chemicals evenly with the

treated wastewater.

F) Anaerobic digestion

Common or many digester designs are the

requirements or biomass homogenization,

temperature equalization, breaking o oating

crusts and prevention o oam ormation.

The most efcient solution uses the slow

running ABS Scaba agitators with large

propellers and high ow capacity.

G) Sludge buer tank

Blending and homogenization o

concentrated primary, secondary or

digested sludge are the most common

application in the sludge buer tanks.

Both dry installed ABS Scaba agitatorsand ABS submersible mixers can be

successully used.

Submersible or dry installed?

In a number o the wastewater treatment

applications or mixing and agitation both

submersible and dry installed solutions can

be used. Normally the physical conditions

like tank size and volume determines which

solution to use. However, other actors like

operation and maintenance requirements or

strategy determines the preerred solution.

At ABS we oer both solutions and can

advise the customer by highlighting the

pros and cons o the dierent options.

2

6

6

1

1 5 6

6

3 4

5

3

4

3 6

C

D

E

F

RW 200-280 RW 480 RW 300-900 SB 900-2500 SB 1200 KA Scaba agitator

Propeller diameter 7.87-11.02 in 18.90 in 11.81- 35.43 in 35.43 - 98.43 in 35.43 - 42.52 in 5.91- 0.39 in

Rated motor power 1.61- 3.75 hp 10.05 -14.75 hp 2.01- 29.5 hp 1.88 - 6.17 hp 4.02 - 6.17 hp 0.16 - 402.3 hp

Mixer thrust up to 320 N 2000 N 5225 N 3800 N 1420 N -


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ABS SUBMERSIBLE MIXERS.FOR OPTIMIZED OPERATION.

The ABS submersible mixers are designed or economical and

reliable operation and can be used in all tanks, regardless

o size and shape. ABS mixer range is the result o years oexperience and continuous development.

Clever propeller design

ABS propellers are specially designed to give a sel-cleaning

eect. The design guarantees efcient operation throughout

the entire range and at all perormance levels. This results in

operation which is vibration-ree, with steady ow operation

without turbulence.

Unique coupling system

The patented ABS coupling system is a major innovation which

acilitates connecting and disconnecting the submersible

mixers. The mixer is lowered down on a guide rail and secured

in position by a unique coupling device. Some simple grips are

what is needed to disconnect and raise the mixer again, and

this can be done without emptying the tank.

Vibrations caused by the liquid ow or by the mixing uid itsel

have high impact on the propeller and must be absorbed by the

coupling device. The sturdy construction o the ABS coupling

system can withstand these orces without vibrating.

Flexible positioning reduces power consumption

The ABS installation system allows you to create the best

conditions or high process efciency. Using the guide rails, themixers can be adjusted vertically to operate at the dierent

levels and they can also be rotated to operate in dierent

directions. ABS also oers a kit which makes it possible to

angle the mixers upwards or downwards.

In large tanks, several mixers can be installed in dierent

locations to achieve optimum mixing at very low power

consumption. The investment costs can also be minimized

as the guide rail system does not require any investments

in walkways or bridges.

tp p: ABS ow booster SB installation in an oxidation ditch.M: An arrangement o mixers to ensure movement in all cornerso the tank.bm: ABS unique coupling system. No need to empty the tank toremove the mixer.

Connecting

Lowering

Coupling

Disconnecting

Raising

Decoupling


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ABS FLOW BOOSTER SB. MAXIMUM FLOW.MINIMUM POWER CONSUMPTION.

Slow running submersible mixer with integral motors or gentle circulation and mixing

o uids in treatment plants and industrial applications. Ideal or circulation and owgeneration in the nitrifcation, denitrifcation, phosphate elimination and equalization

stages. The concrete pedestal is unique or the ABS ow booster and is designed to

efciently absorb vibrations.

The streamlined shape o the base avoids turbulence and thereore improves theefciency o the propeller.

The mass and material characteristics o the concrete base suppress all damagingvibrations.

Corrosion resistance and a robust connection with the tank oor ensure the highreliability and a long operating lie.

ABS fow booster SB

PropellerDesigned or optimum ow (highthrust, low energy consumption) withsel-cleaning capabilities. Insensitiveor turbulence or uneven ow.

Sensors or motortemperature monitoringThermal sensors in each phase o thestator ensures reliable operation byprotecting the motor rom overheatingby automatically shutting it downbeore damage occurs.

Seal monitoringThe ABS sealminder system is anelectronic, low voltage moisturewarning device, designed to alertstation operators o the presence omoisture in the mixer.

Submersible motorHigh efciency three-phasemotorencapsulated in a waterand pressure tight housingor protection.

Motor and gearbox bearingsLubricated-or-lie bearings with acalculated lie o more than 100,000operating hours.

Silicon carbide mechanical sealsSilicon carbide mechanical seals with highthermal shock- and abrasion resistance aswell as excellent chemical resistanceensure reliability and long operating lie.

GearboxFatigue resistant design withlong term lubricated one- andtwo-stage helical gear boxensures long operating lie.

Solids defection ringPatented solids deection ringprotects the mechanical sealor reliable operation.


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ABS SUBMERSIBLE MIXERS RW.RELIABILITY AND EFFICIENCY.

Propeller orABS submersible mixer RWBlades shaped or optimumow properties make thepropeller insensitive toturbulence or uneven ow.Energy-saving and sel-cleaning with high thrust.

Submersible motorHigh efciency three-phase motor,encapsulated in a water andpressure tight housing or protection.

Solids defection ringPatented solids deection ring

protects the mechanical seal orreliable operation.

Motor and gearbox bearingsThe lubricated-or-lie bearings have

a calculated lie o more than 100,000operating hours.

Guide tube and suspensionAbrasion-resistantgalvanized and insulated guidetube and suspension.

Sensors or motortemperature monitoring

Thermal sensors in each phase othe stator protect the motor romoverheating, automatically shuttingit down beore damage can occurs.

Seal monitoringThe ABS sealminder system is anelectronic, low voltage moisturewarning device, designed to alertstation operators o the presenceo moisture in the mixer.

High power reservesHigh power reserves ensure continuous mixing in allsituations minimizing the risk o unplanned stoppages.

Compact mixer specially designed orapplications within the wastewater

treatment plant and or cleaning pump

sumps.

Small space requirements through

compact design.

Adjustable bracket allows direction to

be altered to give greater exibility.

ABS submersible mixer RW 200

Specially designed or the major mixingunctions during the homogenization o

sludge and slurry.

Sel-cleaning two-blade propeller

reduces Lie Cycle Cost .

Reduced energy cost due to a unique

drive unit design including a highly

efcient gearbox.

Hydrodynamic shape or optimum

ow ormation.

ABS submersible mixer RW 480

Designed or a wide range o applicationswithin the wastewater treatment plant.

Can be used in every shape and size

o tank.

Full stainless steel versions are available.

Hydrodynamic shape or optimum ow

ormation.

ABS submersible mixerRW 300-900


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ABS FLOW BOOSTER SB 1200 KA.FOR APPLICATIONS WITH PLASTIC CARRIERS.

tp p: The uniquely designed ABS ow booster SB 1200 KA or the mixing o plastic carriers.tw m p: Close-ups o plastic carriers covered with microorganism.bm p: Bioflm carriers mixed in the reactor.

The ABS ow booster SB 1200 KA has beendeveloped specifcally as a result o our

experience working with treatment plants

using moving bed bioflm reactor (MBBR) in

the biological process.

The bioflm plastic carriers used in the

MBBR process have a lower density than

water and oat towards the surace o the

wastewater. ABS has developed a special

mixer, ABS ow booster SB 1200 KA, or the

MBBR applications. The mixer is designed to

keep these carriers in circulation in the tank.

The low tip speed and a rounded propellerront edge o the SB 1200 KA avoid disruption

o the bioflm carriers which is a typical

concern in the MBBR process.

The ABS ow booster SB 1200 KA oers the

ollowing advantages or this application:

Uniquely designed or the mixing o

plastic carriers.

Low tip speed to avoid the disruption

o bioflm plastic carriers.

Smooth rounded propeller ront edgeavoid disruption o the bioflm carriers.

Solid deection ring or avoiding

penetration o plastic carriers into the hub.

The SB 1200 KA use the same modular

components as the submersible mixer

RW and has thereby the same key

advantages o the reliable and robust

motor design.

ABS fow boosterSB 1200 KA


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ABS SCABA AGITATORS.TAILOR-MADE SOLUTIONS.

The dry-installed agitators rom ABS can

successully be applied in many stages o the

wastewater treatment process or examplein the neutralization and occulation

processes, the selector tank, the biological

process, the anaerobic digestion and in the

sludge buer tank.

Customized agitators or reduced

energy consumption

The agitators are o robust modular design

and can be combined with various types o

drive units, seals and propellers. The major

beneft o the ABS Scaba range is the

possibility to customize to achieve optimum

efciency and reliability. The modular

ABS Scaba range enables high level o

customization using standard components.

The driving orce or the customization is to

strive or maximum agitation with minimal

use o power.

Computer-aided design program

Many actors eect the process and

mechanical aspects o the design

procedure. Important considerations are

type o process, type o liquid, volume, the

shape o the tank etc. In some applications

the density, viscosity and solid content are

the dominant actors. The ABS Scaba

agitator is individually tailored or dierent

types o liquids. The side entry agitator is

suitable or liquids with viscosities up to

1,000 mPa and the top entry agitator or

liquids, liquid-solids and liquid-gas, up to

100,000 mPa.

In order to establish the correct dimension

o the agitator or a specifc tank ABS use a

design model taking the velocity at the liquidsurace into consideration when calculating

the agitation in a tank. The speed at the

bottom o the tank is always higher than at

the surace, thereore it is more reliable to

measure the surace speed when designing

the agitator. All calculations are done with a

computerized program which is also used to

confgure the optimal ABS Scaba agitator

tailor made or the process conditions.


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Pedestal module options

The pedestal module is equipped with

sleeve and ange couplings as standard,but the optional choice is a double

spherical roller bearing with adapter

sleeve. No bottom bearing minimizes

maintenance.

Flange or sleeve coupling

Radially split coupling

Double spherical roller bearings

Stufng boxSingle or double mechanical seal

Labyrinth, TH and TS seals

Shat length up to 30 m

Drive unit options

The drive unit is selected based on unique

process requirements and can beequipped with gears, parallel shat gears,

bevel gears or V-belt drives.

Power rating 0.15 - 67 hp

Electric, hydraulic or pneumatic

Propeller options

The patented Scaba propeller gives the

required process result at the lowestpossible power input and is available with

many types o seal and material options.

The blade shape o the high ow propeller

gives an efcient and even mixing with

less vibration.

ABS Scaba agitator

The ABS Scaba agitator is all about customization. Shat lengths, propeller sizes, type o

motor, top or side entry installation are only the basics - every agitator that leaves the ABSmanuacturing is specifcally confgured to match its designated process in the waste-

water treatment plant.

Process guarantee or all applications.

High-efciency propeller.

No risk o sedimentation.

Good axial ow.

Few spare parts enable quick and easy maintenance.

Same modular system or all agitators increases exibility.


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ABS is the only manuacturer in the world who can oer a complete product package or

the biological wastewater treatment process. The ABS system experience together with

market leading products oers highly efcient and reliable solutions resulting in market

leading Lie Cycle Cost.

COMPLETE EqUIPMENT PACKAGE FORTHE BIOLOGICAL TREATMENT PROCESS.

The complete ABS product portolio or wastewater treatment:

Anaerobic and Anoxic zones (1-2)ABS top and side mounted agitatorsABS submersible mixersABS submersible ow boosters

Aerobic zone (3-4)ABS turbocompressorsABS diuser systems

ABS pressurized submersible aeratorsABS sel aspirating aerators

Recirculation (5)ABS wastewater pumps

Corporate Ofce

ABS USA, 140 Pond View Drive, Meriden, CT 06450, Tel: (203) 238-2700, Fax: (203)238-0738www.absgroupusa.com, [email protected]

OfcesABS USA, 111 Maritime Drive, Sanord, FL 32771, Tel: (407) 330-3456, Fax: (407) 330-3404

ABS USA, 11335 Sunrise Park Dr., Rancho Cordova, CA 95742, Tel: (916) 949-7075, Fax:(916) 949-7359

ABS Pumps Corporation, 1401 Meyerside Drive, Unit#2, Mississauga, Ontario L5T 1G8,Tel: (905) 670-4677, Fax:(905) 670-3709, www.absgroup.ca, [email protected]

SECONDARY

SEDIMENTATION

4. AIR

COMPRESSION

5. Mixed liquor recirculation

5. Activated sludge recirculation

BIOLOGICAL WASTEWATER

TREATMENT PROCESS

2. ANOXIC1. ANAEROBIC 3. AEROBIC

SECONDARY TREATMENT

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