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7/31/2019 abs_mixers kartrc
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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
3 ABS submersible mixer
RW 300-900
4 ABS fow booster
SB 900-2500
5 ABS submersible mixer
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.
6
2 3 6
6
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