-
HCM
2.0
00 0
3.08
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ted
on ch
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ee b
leac
hed
pape
r
l o c a t i o n s
mi
xi
ng
t
ec
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ol
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Fluid mechanicallyoptimized
Excellent suspensionand homogenizingcharacteristics
Low energyconsumption
Robust construction
Low maintenance
Low operationalcosts
H Y P E R C L A S S I C ®- M i x e re v o l u t i o n 6
worldwideA list of our sales partnersabroad is available by
requestor on the internet:
www.invent-uv.de
e v o l u t i o n 6
You can reach us at:
INVENT Umwelt- undVerfahrenstechnik AG
Headquarters:Am Weichselgarten 3691058 ErlangenGermanyFon: +49
(0) 91 31 - 690 098 - 0Fax: +49 (0) 91 31 - 690 98 - 99E-mail:
[email protected]
Plant 1:Burgstallerweg 1491074 HerzogenaurachGermanyFon: +49 (0)
91 32 - 74 13 70Fax: +49 (0) 91 32 - 74 13 72
Belgium Office:Gladiolenlaan 511770 LiedekerkeBelgiumFon: +32
(0) 53 68 56 61Fax: +32 (0) 53 68 56 61E-mail:
[email protected]
Benelux Office:Kapitein De Rijkstraat 422583 BK Den HaagThe
NetherlandsFon: + 31 (0) 70 - 306 19 98Fax: + 31 (0) 70 - 306 19
97E-mail: [email protected]
US Office:INVENT EnvironmentalTechnologies Inc.99 Bauer
Dr.Oakland, NJ 07436USAFon: +1 201 644 7040Fax: +1 201 644
7045E-mail: [email protected]
u m w e l t u n dv e r f a h r e n s t e c h n i
k
2
-
H Y P E R C L A S S I C ®
i n n o v a t i o n f o r n a t u r e
The C lass i c Mixer
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
Application Mixing task. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .
Mixing and equalization tank Suspension and
HomogenizationNeutralization Flash-MixingPre-Mixing of Precipitants
Flash-MixingPrecipitation Suspension and HomogenizationCoagulation
Suspension and HomogenizationBiological phosphate elimination
Suspension and HomogenizationDenitrification Suspension and
HomogenizationBOD or COD removal Homogenization and
DispersionDisinfection Flash-MixingSludge treatment Suspension and
HomogenizationStorage of chemicals/chemical solution Suspension
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
INVENT develops, produces andglobally markets innovative
machinesand plants for the treatment of waterand wastewater.
Water and wastewater treatmentplants are usually created as a
made-to-measure design and lay-out for aparticular
project.Depending on the original situationand the intended
treatment, variousprocess engineering steps are com-bined so that
the aim of the processengineering is safely within reach.While
doing so, the engineer drawsfrom a range of known unit pro-cesses.
The most important processesfrom this range are stirring andmixing
processes. They play a de-cisive role in nearly all water
andwastewater treatment plants.
Below you will find some examplesfor important applications of
mixingtechnology in water and wastewatertreatment plants.
The table shown to the right isimpressive proof of the
importanceof mixing processes for the waterand wastewater
treatment.
The C lass i c –for over 15 years
32 HYPERCLASSIC ®-Mixers in the anaerobic basins in a large wwtp
in Vienna, Austria
The growing pollution of our environment is a problem which
concerns all of us.
For years water pollution, in particular, has continued to grow
in threatening proportions.
Water is turning into a more and more limited resource. As a
consequence, forward-looking
technologies are desperately needed for water and wastewater
treatment.
With great commitment INVENT is dedicated to the development and
implementation
of such technologies, thus creating powerful products which
contribute greatly
to the preservation of the water quality of our groundwater,
rivers and lakes.
The protection, the preservation and, where necessary, the
restoration of our environment
will remain one of the most important tasks of our society in
the future.
INVENT takes on responsibility in this field,
with innovative environmental and process engineering.
-
H Y P E R C L A S S I C ®
i n n o v a t i o n f o r n a t u r e
The C lass i c Mixer
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
Application Mixing task. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .
Mixing and equalization tank Suspension and
HomogenizationNeutralization Flash-MixingPre-Mixing of Precipitants
Flash-MixingPrecipitation Suspension and HomogenizationCoagulation
Suspension and HomogenizationBiological phosphate elimination
Suspension and HomogenizationDenitrification Suspension and
HomogenizationBOD or COD removal Homogenization and
DispersionDisinfection Flash-MixingSludge treatment Suspension and
HomogenizationStorage of chemicals/chemical solution Suspension
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
INVENT develops, produces andglobally markets innovative
machinesand plants for the treatment of waterand wastewater.
Water and wastewater treatmentplants are usually created as a
made-to-measure design and lay-out for aparticular
project.Depending on the original situationand the intended
treatment, variousprocess engineering steps are com-bined so that
the aim of the processengineering is safely within reach.While
doing so, the engineer drawsfrom a range of known unit pro-cesses.
The most important processesfrom this range are stirring andmixing
processes. They play a de-cisive role in nearly all water
andwastewater treatment plants.
Below you will find some examplesfor important applications of
mixingtechnology in water and wastewatertreatment plants.
The table shown to the right isimpressive proof of the
importanceof mixing processes for the waterand wastewater
treatment.
The C lass i c –for over 15 years
32 HYPERCLASSIC ®-Mixers in the anaerobic basins in a large wwtp
in Vienna, Austria
The growing pollution of our environment is a problem which
concerns all of us.
For years water pollution, in particular, has continued to grow
in threatening proportions.
Water is turning into a more and more limited resource. As a
consequence, forward-looking
technologies are desperately needed for water and wastewater
treatment.
With great commitment INVENT is dedicated to the development and
implementation
of such technologies, thus creating powerful products which
contribute greatly
to the preservation of the water quality of our groundwater,
rivers and lakes.
The protection, the preservation and, where necessary, the
restoration of our environment
will remain one of the most important tasks of our society in
the future.
INVENT takes on responsibility in this field,
with innovative environmental and process engineering.
-
H Y P E R C L A S S I C ® H Y P E R C L A S S I C ®An Overv
iewAn Overv iew
HYPERCLASSIC ® -Mixer -e f f i c i ent and f lex ib le
The Task
As the above table shows, mixers forapplications in water and
wastewatertreatment are mainly used for sus-pension and
homogenization tasksas well as for intensive mixing
andflash-mixing. These tasks should beimplemented in a reliable,
secureand energy-saving way and withthe lowest possible
maintenancerequirement.
With regard to process engineeringthe following demands must be
met:
The settling of particles, such asactivated sludge flocs, should
be reliably avoided (suspension).
Particles, such as activated sludge flocs, should be
distri-buted evenly throughout the wastewater in order, for
example,to efficiently reduce nitrogen and phosphate
(homogeni-zation).
It must be possible to adjust themixer to a perfect position on
the bridge. The mixer should begalvanically separated from
thebridge.
The drive design should be robust and rather on the largeside.
It should possess a high service factor and its bearingsshould have
a calculated mini-mum life expectancy of 100 000hours. Depending on
the in-stallation location, further speci-fic demands must be taken
intoconsideration.
In the anaerobic and anoxic part of the activated sludge
tank,turbulences on the water surfaceshould be reduced to a
mini-mum, in order to prevent the transfer of oxygen from the
airinto the wastewater.
The energy input should be exe-cuted with as little shear
forceas possible, in order avoid thedestruction of the flocs.
Short circuit flows should be avoided.
The reactor behaviour, upon which the process
technologicallay-out is based, together withthe mixer design,
should be im-plemented in a realistic way.
As a consequence of the abovementioned considerations it is
im-portant, from a fluid mechanicsperspective, to take into account
thefollowing points when developing amixer:
The mixer-body should be positioned close to the bottom,so that
the energy input takes place where the sedimentationof particles
should be avoided.
The mixer should be positionedas centrally as possible in the
tank, should run slowly and havea large diameter, so that the
energy input takes place in a homogeneous way and the particles
can be distributed evenly. A design like this is energy-efficient
and low in shearforce.
In order to avoid short circuit flows and the correct display of
the desired reactor behaviour,it is necessary to manufacture the
mixer in various diametersand directions of rotation.These are then
chosen accordingto the tank geometry and the position of the supply
and dis-charge pipes.
Finally, when designing the perfectmixer, all mechanical factors
mustbe considered also:
The mixer should run smoothlyin order to take the strain off the
drive and shaft as well as the bridges. This is achieved bya high
number of blades. Two-bladed constructions are the most
disadvantageous.
Reaction forces in the vertical direction at the shaft, drive
andbridge are to be avoided. Theyresult in a large increase in
wear.
Figure 1: Conventional mixer – high reaction forceson drive and
bridge (upwards)
Optimal design prevents short circuit flows andguarantees
optimal reactor behaviour.
INVENT made a significant contri-bution to the efficiency and
cost-effectiveness of such plants byintroducing the hyperboloid
mixingtechnology to the market for waterand wastewater treatment
over 15years ago. Since then, the hyper-boloid mixing technology
has beencontinuously developed and im-proved. Thousands of
successfulinstallations in municipal andindustrial water and
wastewatertreatment plants world-wide im-pressively demonstrate
that thehyperboloid mixing technology hasalready become the
industrialstandard in this field of application.With the current
version HYPER-CLASSIC ® evo lut ion 6 , the sixth,completely
revised and even moreefficient version of the classichyperboloid
mixer is now available.
The INVENT HYPERCLASSIC ®-Mixer isa vertical mixer with a
hyperboloid-shaped mixer-body, installed closeto the bottom, and a
drive mountedin dry position above the water level.Contrary to
other products, it wasdeveloped and designed especiallyfor
applications in the area of waterand wastewater treatment.
Figure 2: HYPERCLASSIC ®-Mixer – small reactionforces on drive
and bridge (downwards)
All parts submerged in water should be non-corrosive and
maintenance-free during their life.
It should be possible to separatethe mixer-body of bigger
mixerfrom the shaft for mounting anddismantling purposes.
,
-
H Y P E R C L A S S I C ® H Y P E R C L A S S I C ®An Overv
iewAn Overv iew
HYPERCLASSIC ® -Mixer -e f f i c i ent and f lex ib le
The Task
As the above table shows, mixers forapplications in water and
wastewatertreatment are mainly used for sus-pension and
homogenization tasksas well as for intensive mixing
andflash-mixing. These tasks should beimplemented in a reliable,
secureand energy-saving way and withthe lowest possible
maintenancerequirement.
With regard to process engineeringthe following demands must be
met:
The settling of particles, such asactivated sludge flocs, should
be reliably avoided (suspension).
Particles, such as activated sludge flocs, should be
distri-buted evenly throughout the wastewater in order, for
example,to efficiently reduce nitrogen and phosphate
(homogeni-zation).
It must be possible to adjust themixer to a perfect position on
the bridge. The mixer should begalvanically separated from
thebridge.
The drive design should be robust and rather on the largeside.
It should possess a high service factor and its bearingsshould have
a calculated mini-mum life expectancy of 100 000hours. Depending on
the in-stallation location, further speci-fic demands must be taken
intoconsideration.
In the anaerobic and anoxic part of the activated sludge
tank,turbulences on the water surfaceshould be reduced to a
mini-mum, in order to prevent the transfer of oxygen from the
airinto the wastewater.
The energy input should be exe-cuted with as little shear
forceas possible, in order avoid thedestruction of the flocs.
Short circuit flows should be avoided.
The reactor behaviour, upon which the process
technologicallay-out is based, together withthe mixer design,
should be im-plemented in a realistic way.
As a consequence of the abovementioned considerations it is
im-portant, from a fluid mechanicsperspective, to take into account
thefollowing points when developing amixer:
The mixer-body should be positioned close to the bottom,so that
the energy input takes place where the sedimentationof particles
should be avoided.
The mixer should be positionedas centrally as possible in the
tank, should run slowly and havea large diameter, so that the
energy input takes place in a homogeneous way and the particles
can be distributed evenly. A design like this is energy-efficient
and low in shearforce.
In order to avoid short circuit flows and the correct display of
the desired reactor behaviour,it is necessary to manufacture the
mixer in various diametersand directions of rotation.These are then
chosen accordingto the tank geometry and the position of the supply
and dis-charge pipes.
Finally, when designing the perfectmixer, all mechanical factors
mustbe considered also:
The mixer should run smoothlyin order to take the strain off the
drive and shaft as well as the bridges. This is achieved bya high
number of blades. Two-bladed constructions are the most
disadvantageous.
Reaction forces in the vertical direction at the shaft, drive
andbridge are to be avoided. Theyresult in a large increase in
wear.
Figure 1: Conventional mixer – high reaction forceson drive and
bridge (upwards)
Optimal design prevents short circuit flows andguarantees
optimal reactor behaviour.
INVENT made a significant contri-bution to the efficiency and
cost-effectiveness of such plants byintroducing the hyperboloid
mixingtechnology to the market for waterand wastewater treatment
over 15years ago. Since then, the hyper-boloid mixing technology
has beencontinuously developed and im-proved. Thousands of
successfulinstallations in municipal andindustrial water and
wastewatertreatment plants world-wide im-pressively demonstrate
that thehyperboloid mixing technology hasalready become the
industrialstandard in this field of application.With the current
version HYPER-CLASSIC ® evo lut ion 6 , the sixth,completely
revised and even moreefficient version of the classichyperboloid
mixer is now available.
The INVENT HYPERCLASSIC ®-Mixer isa vertical mixer with a
hyperboloid-shaped mixer-body, installed closeto the bottom, and a
drive mountedin dry position above the water level.Contrary to
other products, it wasdeveloped and designed especiallyfor
applications in the area of waterand wastewater treatment.
Figure 2: HYPERCLASSIC ®-Mixer – small reactionforces on drive
and bridge (downwards)
All parts submerged in water should be non-corrosive and
maintenance-free during their life.
It should be possible to separatethe mixer-body of bigger
mixerfrom the shaft for mounting anddismantling purposes.
,
-
H Y P E R C L A S S I C ®H Y P E R C L A S S I C ®
Due to the flow on the water surfacewhich is directed towards
the shaft,all particles are distributed evenlythroughout the tank.
Finally, in thecentre of the tank the water is againtransported
downwards along theshaft. A vortex-shaped main flow isthus created
throughout the wholetank, which ensures excellent
homo-genization.
The So lut ion The So lut ion
6 out of 116 HYPERCLASSIC ®-Mixers in a wwtp in Berlin,
Germany
Opt ima l des ignguarantees h igh
ef f i c i ency
Schematicalrepresentation of thehyperboloid mixer withindication
of thestreamlines
The So lut ion
The INVENT HYPERCLASSIC ®-Mixer isa vertical shaft mixer with a
hyper-boloid-shaped mixer-body installedclose to the bottom and a
dry-mounted drive. In contrast to otherproducts, it was developed
anddesigned especially for applicationsin the area of water and
wastewatertreatment.The way the hyperboloid mixerfunctions can be
seen in illustrationbelow. The mixer is pictured with itsthree main
components, the drive,the shaft and the hyperboloid mixer-body in a
typical tank, which,depending on the type of treatmentplant, can be
rectangular or round.
Naturally, other shapes of tank arealso possible.The hyperboloid
mixer rotates closeto the bottom and its 8 integrated andspecially
optimized motion fins thusproduce a bottom flow which isdirected
radially outwards. Particularlyat the bottom, this flow is
turbulentand thus effectively which whirls updepositions. Along the
walls the flowrises upwards and transports allparticles until they
are just below thewater surface. On the water surfacethe speed has
been reduced to suchan extent that no further turbulencescan be
produced and oxygen inputvia the water surface can be effective-ly
avoided.
The shape of the hyperboloid mixeris based on complex
potential-theoretical calculations. This resultsin a flow pattern,
which, in summary,exhibits the following basic ad-vantages:
With regard to both quality andquantity, the produced
macro-scale flow has the most favour-able pattern. By actively
re-directing the flow on the surfaceof the mixer, friction losses
areminimized, thus achieving highefficiency.
The highest velocities and turbulent fluctuating velocitiesare
induced at the bottom.This means that the energy inputtakes place
directly at the bottom, so that the input energyis specifically
used to whirl upand suspend sludge flocs andis not wasted anywhere
else.
The flow stays attached to thehyperboloid mixer surface.
Flowseparations, eddy formations and thus energy losses are
prevented. This also boosts theefficiency.
HYPERCLASSIC ®-Mixers operatecompletely without pulsation due to
the closed shape and the 8 motion fins (high numberof blades).
The uniform, radial flow-off overthe complete mixer body
facili-tates a flow, which is largely free of periodic
fluctuations. The effect of this flow is that thehyperboloid mixer
centers itself.Therefore the forces on the gearand the bridges is
small. In addition, no oscillations are transferred to the shaft
and thebridges which allows a simpleand economical bridge
construction.
All reaction forces on the gearand bridges are axial and
directed downwards. The radialforces which are generated arevery
small. Therefore mixers with long shafts can also be constructed
without problems.
The finely graduated diameterrange along with the
selectablerotational direction, especiallyin long tanks with
lengthwise through-flow, has big advan-tages with regard to the
re-tention time and the flow in tanks of this type. This
contri-butes to a high operational safety level.
micro-vortices hyperboloidmixer-body
motion fins
drive shaft
-
H Y P E R C L A S S I C ®H Y P E R C L A S S I C ®
Due to the flow on the water surfacewhich is directed towards
the shaft,all particles are distributed evenlythroughout the tank.
Finally, in thecentre of the tank the water is againtransported
downwards along theshaft. A vortex-shaped main flow isthus created
throughout the wholetank, which ensures excellent
homo-genization.
The So lut ion The So lut ion
6 out of 116 HYPERCLASSIC ®-Mixers in a wwtp in Berlin,
Germany
Opt ima l des ignguarantees h igh
ef f i c i ency
Schematicalrepresentation of thehyperboloid mixer withindication
of thestreamlines
The So lut ion
The INVENT HYPERCLASSIC ®-Mixer isa vertical shaft mixer with a
hyper-boloid-shaped mixer-body installedclose to the bottom and a
dry-mounted drive. In contrast to otherproducts, it was developed
anddesigned especially for applicationsin the area of water and
wastewatertreatment.The way the hyperboloid mixerfunctions can be
seen in illustrationbelow. The mixer is pictured with itsthree main
components, the drive,the shaft and the hyperboloid mixer-body in a
typical tank, which,depending on the type of treatmentplant, can be
rectangular or round.
Naturally, other shapes of tank arealso possible.The hyperboloid
mixer rotates closeto the bottom and its 8 integrated andspecially
optimized motion fins thusproduce a bottom flow which isdirected
radially outwards. Particularlyat the bottom, this flow is
turbulentand thus effectively which whirls updepositions. Along the
walls the flowrises upwards and transports allparticles until they
are just below thewater surface. On the water surfacethe speed has
been reduced to suchan extent that no further turbulencescan be
produced and oxygen inputvia the water surface can be effective-ly
avoided.
The shape of the hyperboloid mixeris based on complex
potential-theoretical calculations. This resultsin a flow pattern,
which, in summary,exhibits the following basic ad-vantages:
With regard to both quality andquantity, the produced
macro-scale flow has the most favour-able pattern. By actively
re-directing the flow on the surfaceof the mixer, friction losses
areminimized, thus achieving highefficiency.
The highest velocities and turbulent fluctuating velocitiesare
induced at the bottom.This means that the energy inputtakes place
directly at the bottom, so that the input energyis specifically
used to whirl upand suspend sludge flocs andis not wasted anywhere
else.
The flow stays attached to thehyperboloid mixer surface.
Flowseparations, eddy formations and thus energy losses are
prevented. This also boosts theefficiency.
HYPERCLASSIC ®-Mixers operatecompletely without pulsation due to
the closed shape and the 8 motion fins (high numberof blades).
The uniform, radial flow-off overthe complete mixer body
facili-tates a flow, which is largely free of periodic
fluctuations. The effect of this flow is that thehyperboloid mixer
centers itself.Therefore the forces on the gearand the bridges is
small. In addition, no oscillations are transferred to the shaft
and thebridges which allows a simpleand economical bridge
construction.
All reaction forces on the gearand bridges are axial and
directed downwards. The radialforces which are generated arevery
small. Therefore mixers with long shafts can also be constructed
without problems.
The finely graduated diameterrange along with the
selectablerotational direction, especiallyin long tanks with
lengthwise through-flow, has big advan-tages with regard to the
re-tention time and the flow in tanks of this type. This
contri-butes to a high operational safety level.
micro-vortices hyperboloidmixer-body
motion fins
drive shaft
-
H Y P E R C L A S S I C ® H Y P E R C L A S S I C ®Des ign and
Mater ia l Se lec t ion Des ign and Mater ia l Se lec t ion
The geared motor sits on a mountingbase in a rubber buffer
bearing. Thepropagation of sound waves is thusavoided and the
complete mixer isthereby galvanically separated fromthe bridge.
ShaftThe shaft provides the connectionbetween the drive and the
mixerbody. It transfers the required torque,in order to allow the
hyperboloidmixer to rotate.The shaft is manufactured from
aspecially developed FRP pipedesigned for the loads which
occur.
Des ign and Mater ia l Se lec t ion
As illustrated in the accompanyingblow-up drawing, the
hyperboloidmixer is made up of three maincomponents which are
preciselyfitted to each other, the drive, theshaft and the
hyperboloid mixer-body.
DriveThe drive is positioned above thewaterlevel and is arranged
on abridge or mounting bracket whereit is easily accessible for
rarelyneeded maintenance work.For wastewater ponds or SBR
plantswith varying water levels, the hyper-boloid mixer can also be
mountedon a special float.
Only energy-saving and robustgeared motors with
reinforcedbearings from renowned manu-facturers are used. Normally,
highservice factors are selected and thecalculated bearing life
expectancyis more than 100,000 h. Special,customer-specific models
can be builtat any time.
S imple , robust andsafe to operate
It is generously dimensioned anddesigned for endurance. Through
theuse of the most modern compositematerials, the shaft is very
light,extremely corrosion-resistant andflexible. It is particularly
easy tomount because of the light weight.All HYPERCLASSIC ®-Mixers
can bedesigned without a bearing becauseof their innovative design.
The smallbearing forces are transferred to thegeared motor via the
shaft andabsorbed there. Consequently, noparts whatsoever which
requiremaintenance lie below the water line.
Hyperboloid Mixer-BodyThe hyperboloid mixer-body, deve-loped out
of the INVENT laboratoryin accordance with the most up-to-date
knowledge on the mechanics offluids, is likewise manufactured
usingfiber-reinforced plastic. The use ofthe most modern
fiber-reinforcedcomposites also guarantees a high-strength,
corrosion-resistant and lightcomponent here.
The hyperboloid mixer body isconnected to the lower end of
theshaft by means of a flangeconnection. The INVENT Safety
LockTechno logy ® is used for this purpose.
This enables a simple and rapidassembly as well as a simple
removaleven after many years of operation.Under operation
conditions theconnection is safely protectedagainst
self-loosening.
The complete hyperboloid mixer isnot just producing a favourable
flowfield but is also absolutely non-clogging because of the
optimalshape and the motion fins which areseamlessly integrated in
the mixer-body.
The latest development step“evo lut ion 6” uses the
newlydeveloped INVENT Progress ive F inTechno logy ®. This
technology allowsfor further significant improvementof the
efficiency compared toprevious versions.
hyperboloid-mixer-body
shaft
bridge
rubber buffers
drive
mounting base
-
H Y P E R C L A S S I C ® H Y P E R C L A S S I C ®Des ign and
Mater ia l Se lec t ion Des ign and Mater ia l Se lec t ion
The geared motor sits on a mountingbase in a rubber buffer
bearing. Thepropagation of sound waves is thusavoided and the
complete mixer isthereby galvanically separated fromthe bridge.
ShaftThe shaft provides the connectionbetween the drive and the
mixerbody. It transfers the required torque,in order to allow the
hyperboloidmixer to rotate.The shaft is manufactured from
aspecially developed FRP pipedesigned for the loads which
occur.
Des ign and Mater ia l Se lec t ion
As illustrated in the accompanyingblow-up drawing, the
hyperboloidmixer is made up of three maincomponents which are
preciselyfitted to each other, the drive, theshaft and the
hyperboloid mixer-body.
DriveThe drive is positioned above thewaterlevel and is arranged
on abridge or mounting bracket whereit is easily accessible for
rarelyneeded maintenance work.For wastewater ponds or SBR
plantswith varying water levels, the hyper-boloid mixer can also be
mountedon a special float.
Only energy-saving and robustgeared motors with
reinforcedbearings from renowned manu-facturers are used. Normally,
highservice factors are selected and thecalculated bearing life
expectancyis more than 100,000 h. Special,customer-specific models
can be builtat any time.
S imple , robust andsafe to operate
It is generously dimensioned anddesigned for endurance. Through
theuse of the most modern compositematerials, the shaft is very
light,extremely corrosion-resistant andflexible. It is particularly
easy tomount because of the light weight.All HYPERCLASSIC ®-Mixers
can bedesigned without a bearing becauseof their innovative design.
The smallbearing forces are transferred to thegeared motor via the
shaft andabsorbed there. Consequently, noparts whatsoever which
requiremaintenance lie below the water line.
Hyperboloid Mixer-BodyThe hyperboloid mixer-body, deve-loped out
of the INVENT laboratoryin accordance with the most up-to-date
knowledge on the mechanics offluids, is likewise manufactured
usingfiber-reinforced plastic. The use ofthe most modern
fiber-reinforcedcomposites also guarantees a high-strength,
corrosion-resistant and lightcomponent here.
The hyperboloid mixer body isconnected to the lower end of
theshaft by means of a flangeconnection. The INVENT Safety
LockTechno logy ® is used for this purpose.
This enables a simple and rapidassembly as well as a simple
removaleven after many years of operation.Under operation
conditions theconnection is safely protectedagainst
self-loosening.
The complete hyperboloid mixer isnot just producing a favourable
flowfield but is also absolutely non-clogging because of the
optimalshape and the motion fins which areseamlessly integrated in
the mixer-body.
The latest development step“evo lut ion 6” uses the
newlydeveloped INVENT Progress ive F inTechno logy ®. This
technology allowsfor further significant improvementof the
efficiency compared toprevious versions.
hyperboloid-mixer-body
shaft
bridge
rubber buffers
drive
mounting base
-
H Y P E R C L A S S I C ®H Y P E R C L A S S I C ®The Insta l la
t ion The Operat ion
S imp le , prob lem-freeand qu i ck
Low operat iona l costsdue to low energy consumpt ion
The last step consists of screwing thehyperboloid mixer-body to
the lowershaft flange. Just a short dry run andthe HYPERCLASSIC
®-Mixer is readyfor operation.
Of course, the hyperboloid mixercan also be mounted and
dismantledin a filled tank. In the theoreticallypossible case of a
motor or drivedefect, these components can beexchanged without
having to dis-mantle the complete mixer.
Low maintenance costs
Due to the location and the excellentaccessibility of the drive
this is child’splay. There are no work-intensiveand unpleasant
pulling and cleaningjobs, which for example, is generallythe case
with submerged drives.Expensive maintenance work, suchas the
exchange of mechanical seals,are superfluous, because no partswhich
are subject to wear areinstalled below water level.
The Insta l la t ion
Due to the simple construction andthe light weight of the
components,the assembly can be carried outwithout big efforts. The
hyperboloidmixer is normally delivered to theconstruction site in a
disassembledstate. There the shaft is first of allconnected to the
drive unit by pullingthe top end of the shaft into thehollow shaft
of the drive. Next bothdrive and shaft are placed on topof the
prepared stainless-steel threadbolts or adhesion anchors on
thebridge or the bracket. Then the driveis aligned and is ready for
operationafter the electrical connection andchecking of the oil
level.
2 out of 45 HYPERCLASSIC ®-Mixers in a wwtp in Kuwait City,
Kuwait
The Operat ion
After a short dry run and a check ofthe direction of rotation
the hyper-boloid mixer can start operatingwithout any further work.
It isdesigned for permanent operationand does not require any
mainte-nance work, except an occasionalinspection of the oil level.
Dependingon the type of oil, an oil change iscarried out once every
1 or 2 years.
45 HYPERCLASSIC ®-Mixers in a large wwtp in Kuwait City, Kuwait7
out of 33 HYPERCLASSIC®
-Mixers in a wwtp in Berlin-Stahnsdorf, Germany1 out of 32
HYPERCLASSIC®
-Mixers in a large wwtp in Vienna, Austria
2 out of 48 HYPERCLASSIC ®-Mixers in a wwtp inStockholm,
Sweden
-
H Y P E R C L A S S I C ®H Y P E R C L A S S I C ®The Insta l la
t ion The Operat ion
S imp le , prob lem-freeand qu i ck
Low operat iona l costsdue to low energy consumpt ion
The last step consists of screwing thehyperboloid mixer-body to
the lowershaft flange. Just a short dry run andthe HYPERCLASSIC
®-Mixer is readyfor operation.
Of course, the hyperboloid mixercan also be mounted and
dismantledin a filled tank. In the theoreticallypossible case of a
motor or drivedefect, these components can beexchanged without
having to dis-mantle the complete mixer.
Low maintenance costs
Due to the location and the excellentaccessibility of the drive
this is child’splay. There are no work-intensiveand unpleasant
pulling and cleaningjobs, which for example, is generallythe case
with submerged drives.Expensive maintenance work, suchas the
exchange of mechanical seals,are superfluous, because no partswhich
are subject to wear areinstalled below water level.
The Insta l la t ion
Due to the simple construction andthe light weight of the
components,the assembly can be carried outwithout big efforts. The
hyperboloidmixer is normally delivered to theconstruction site in a
disassembledstate. There the shaft is first of allconnected to the
drive unit by pullingthe top end of the shaft into thehollow shaft
of the drive. Next bothdrive and shaft are placed on topof the
prepared stainless-steel threadbolts or adhesion anchors on
thebridge or the bracket. Then the driveis aligned and is ready for
operationafter the electrical connection andchecking of the oil
level.
2 out of 45 HYPERCLASSIC ®-Mixers in a wwtp in Kuwait City,
Kuwait
The Operat ion
After a short dry run and a check ofthe direction of rotation
the hyper-boloid mixer can start operatingwithout any further work.
It isdesigned for permanent operationand does not require any
mainte-nance work, except an occasionalinspection of the oil level.
Dependingon the type of oil, an oil change iscarried out once every
1 or 2 years.
45 HYPERCLASSIC ®-Mixers in a large wwtp in Kuwait City, Kuwait7
out of 33 HYPERCLASSIC®
-Mixers in a wwtp in Berlin-Stahnsdorf, Germany1 out of 32
HYPERCLASSIC®
-Mixers in a large wwtp in Vienna, Austria
2 out of 48 HYPERCLASSIC ®-Mixers in a wwtp inStockholm,
Sweden
-
H Y P E R C L A S S I C ®H Y P E R C L A S S I C ®Lay-out and
Des ign The Laboratory
Numerical simulation of an activatedsludge tank
Lay-out and Des ign
For the lay-out and design of anoptimum mixer it is also
essential toconsider the reactor design and anyfurther marginal
conditions (such asthe shape of the tank, type andlocation of
supply and dischargepipes, physical characteristics of themedia,
desired reactor behaviour,etc.). The mixer and the reactor mustform
a unit. After an extensiveanalysis of requirements and de-finition
of the process engineeringaims, this will be successful only
ifthere is a range of innovative tools,measuring data and empirical
valuesto fall back on in order to chooseand lay out the perfect
mixer.
For both the development and thedetermination of the basis for
thelayout of its mixers, INVENT alwaysmakes use of the latest
developmentsin research and the associatedtechnologies. Modern
laser-Doppler-anemometry (LDA) and ultrasound-Doppler-anemometry
(UDA) pro-cesses are therefore used for thedetermination of speed
profiles inthe laboratory and in large-scalemodels. In addition to
conventionalfluid mechanical methods for scale-up, the most
up-to-date numericsimulations (CFD) are applied.
3D-CAD-programs and finite-element-methods (FEM) are used for
the mixerdesign.
The application of mixers, however,also demands process
engineeringknow-how, so that biological reactorscan function
optimally, short circuitcurrents can be avoided and thedesired
reactor behaviour isachieved.
The accompanying diagram showsa numerical simulation of an
acti-vated sludge tank with multiplethoroughly mixed stirring
reactors,which are created by individualHYPERCLASSIC ®-Mixers.
The Laboratory
Apart from standard applications,time and time again very
specialterms of reference, tank geometriesor mixing tasks must be
mastered.In this case, INVENT can fall back onthe instruments
described above, butalso on a very well-equipped mixinglaboratory
as well as on spacioustesting facilities which are equippedwith
state-of-the-art testing andmeasuring technology.All conceivable
configurations canbe replicated to scale and examined.This delivers
further fundamental datain addition to the existing foundationfor
the layout and can of course alsobe used for the optimization
ofplants.
Competent and exper ienced
Cont inous improvementand qua l i ty contro l
Shop test of an HYPERCLASSIC ®-Mixer
Laser-light-sheet flow visualization in the
INVENTLaboratories
Velocityin z-direction
Flow direction
y [m] 4
x [m] 40
30
20
10
20
-2-4
z [m]
420
realseparatingwall
virtualseparatingwall
vz=[m/s]
0,172
0,147
0,136
0,126
0,070
0,045
0,019
-0,006
-0,032
-0,057
-0,083
-0,150
-0,185
-0,210
-0,236
-0,261
-0,287
-0,300
-0,336Velocityin z-direction
-
H Y P E R C L A S S I C ®H Y P E R C L A S S I C ®Lay-out and
Des ign The Laboratory
Numerical simulation of an activatedsludge tank
Lay-out and Des ign
For the lay-out and design of anoptimum mixer it is also
essential toconsider the reactor design and anyfurther marginal
conditions (such asthe shape of the tank, type andlocation of
supply and dischargepipes, physical characteristics of themedia,
desired reactor behaviour,etc.). The mixer and the reactor mustform
a unit. After an extensiveanalysis of requirements and de-finition
of the process engineeringaims, this will be successful only
ifthere is a range of innovative tools,measuring data and empirical
valuesto fall back on in order to chooseand lay out the perfect
mixer.
For both the development and thedetermination of the basis for
thelayout of its mixers, INVENT alwaysmakes use of the latest
developmentsin research and the associatedtechnologies. Modern
laser-Doppler-anemometry (LDA) and ultrasound-Doppler-anemometry
(UDA) pro-cesses are therefore used for thedetermination of speed
profiles inthe laboratory and in large-scalemodels. In addition to
conventionalfluid mechanical methods for scale-up, the most
up-to-date numericsimulations (CFD) are applied.
3D-CAD-programs and finite-element-methods (FEM) are used for
the mixerdesign.
The application of mixers, however,also demands process
engineeringknow-how, so that biological reactorscan function
optimally, short circuitcurrents can be avoided and thedesired
reactor behaviour isachieved.
The accompanying diagram showsa numerical simulation of an
acti-vated sludge tank with multiplethoroughly mixed stirring
reactors,which are created by individualHYPERCLASSIC ®-Mixers.
The Laboratory
Apart from standard applications,time and time again very
specialterms of reference, tank geometriesor mixing tasks must be
mastered.In this case, INVENT can fall back onthe instruments
described above, butalso on a very well-equipped mixinglaboratory
as well as on spacioustesting facilities which are equippedwith
state-of-the-art testing andmeasuring technology.All conceivable
configurations canbe replicated to scale and examined.This delivers
further fundamental datain addition to the existing foundationfor
the layout and can of course alsobe used for the optimization
ofplants.
Competent and exper ienced
Cont inous improvementand qua l i ty contro l
Shop test of an HYPERCLASSIC ®-Mixer
Laser-light-sheet flow visualization in the
INVENTLaboratories
Velocityin z-direction
Flow direction
y [m] 4
x [m] 40
30
20
10
20
-2-4
z [m]
420
realseparatingwall
virtualseparatingwall
vz=[m/s]
0,172
0,147
0,136
0,126
0,070
0,045
0,019
-0,006
-0,032
-0,057
-0,083
-0,150
-0,185
-0,210
-0,236
-0,261
-0,287
-0,300
-0,336Velocityin z-direction
-
H Y P E R C L A S S I C ® H Y P E R C L A S S I C ®H Y P E R C L
A S S I C ®Further INVENT Products
Other Productsand Serv i cesINVENT is the market leader
formixers, mixing and aeration systemsand membrane aeration systems
forthe water and wastewater treatment.Please do not hesitate to ask
forinformation about our additionalproduct lines. We would also
behappy to offer you complete systemsolutions for your plants, such
as acarefully laid-out and adaptedequipment package. We simulateand
optimize your plant with thehelp of appropriate softwarepackages,
or else we optimize yourplant or building with regard to
fluidmechanics.
INVENT Products wor ldwide
Profess iona l and innovat ive
We are your competent partnerfor all questions on water
andwastewater treatment.
aerationtechnology
systemsolutions
software-products
research &development
engineering &consulting
The Serv i ce
How can we support you with theplanning, optimization,
moder-nization of your plant, or justgenerally with the realization
ofyour ideas? Please ask us aboutit!
In close co-operation with you,the INVENT team will draw up
afirst draft and will, if necessary,develop it further together
withyou via numerous iteration steps,until all requirements are
met.After the order has been placedan experienced team of
engineerswill see to it that your project iscarried out on
schedule.In accordance with the agreementwe will deliver and
install the plantfor you and will also carry out thecommissioning.
Our service teamwill reliably take care of allnecessary maintenance
work.
Beyond the delivery of componentsand plants we also offer you
generaladvisory and engineering servicesin the field of stirring
technology.This can be, for example, the layoutor optimisation of a
stirrer, or theexperimental examination of astirring tank on a
laboratory-scaleor through numeric simulation.
Furthermore, we carry out large-scaleacceptance tests, whereby
usuallythe velocity field, the solid matterconcentration
distribution and thedetention distribution are examined.
Successfull worldwide
INVENT®, HYPERCLASSIC®, SafetyLock Techno logy ®and Progress ive
F inTechno logy® are registered trade-marks of INVENT Umwelt-
undVerfahrenstechnik AG.
Chosen References
Berlin Schönerlinde, GER120 HYPERCLASSIC®-MixersBerlin
Stahnsdorf, GER40 HYPERCLASSIC ®-MixersBerlin Münchehofe, GER40
HYPERCLASSIC ®-MixersStuttgart-Mühlhausen, GER12 HYPERCLASSIC
®-MixersKiel, Germany,40 HYPERCLASSIC ®-MixersStockholm, Sweden,48
HYPERCLASSIC ®-MixersBarcelona, Spain,72 HYPERCLASSIC ®-MixersWien,
Austria,32 HYPERCLASSIC ®-MixersDornbirn, Austria,72 HYPERCLASSIC
®-MixersZürich, Switzerland,8 HYPERCLASSIC ®-MixersDavos,
Switzerland,10 HYPERCLASSIC ®-MixersAmsterdam, The Netherlands,16
HYPERCLASSIC ®-MixersMaastricht, The Netherlands,32 HYPERCLASSIC
®-MixersMasan, South-Korea,104 HYPERCLASSIC ®-MixersKuwait City,
Kuwait,45 HYPERCLASSIC ®-MixersYokohama, Japan,12 HYPERCLASSIC
®-Mixers
INVENT Team meeting
-
H Y P E R C L A S S I C ® H Y P E R C L A S S I C ®H Y P E R C L
A S S I C ®Further INVENT Products
Other Productsand Serv i cesINVENT is the market leader
formixers, mixing and aeration systemsand membrane aeration systems
forthe water and wastewater treatment.Please do not hesitate to ask
forinformation about our additionalproduct lines. We would also
behappy to offer you complete systemsolutions for your plants, such
as acarefully laid-out and adaptedequipment package. We simulateand
optimize your plant with thehelp of appropriate softwarepackages,
or else we optimize yourplant or building with regard to
fluidmechanics.
INVENT Products wor ldwide
Profess iona l and innovat ive
We are your competent partnerfor all questions on water
andwastewater treatment.
aerationtechnology
systemsolutions
software-products
research &development
engineering &consulting
The Serv i ce
How can we support you with theplanning, optimization,
moder-nization of your plant, or justgenerally with the realization
ofyour ideas? Please ask us aboutit!
In close co-operation with you,the INVENT team will draw up
afirst draft and will, if necessary,develop it further together
withyou via numerous iteration steps,until all requirements are
met.After the order has been placedan experienced team of
engineerswill see to it that your project iscarried out on
schedule.In accordance with the agreementwe will deliver and
install the plantfor you and will also carry out thecommissioning.
Our service teamwill reliably take care of allnecessary maintenance
work.
Beyond the delivery of componentsand plants we also offer you
generaladvisory and engineering servicesin the field of stirring
technology.This can be, for example, the layoutor optimisation of a
stirrer, or theexperimental examination of astirring tank on a
laboratory-scaleor through numeric simulation.
Furthermore, we carry out large-scaleacceptance tests, whereby
usuallythe velocity field, the solid matterconcentration
distribution and thedetention distribution are examined.
Successfull worldwide
INVENT®, HYPERCLASSIC®, SafetyLock Techno logy ®and Progress ive
F inTechno logy® are registered trade-marks of INVENT Umwelt-
undVerfahrenstechnik AG.
Chosen References
Berlin Schönerlinde, GER120 HYPERCLASSIC®-MixersBerlin
Stahnsdorf, GER40 HYPERCLASSIC ®-MixersBerlin Münchehofe, GER40
HYPERCLASSIC ®-MixersStuttgart-Mühlhausen, GER12 HYPERCLASSIC
®-MixersKiel, Germany,40 HYPERCLASSIC ®-MixersStockholm, Sweden,48
HYPERCLASSIC ®-MixersBarcelona, Spain,72 HYPERCLASSIC ®-MixersWien,
Austria,32 HYPERCLASSIC ®-MixersDornbirn, Austria,72 HYPERCLASSIC
®-MixersZürich, Switzerland,8 HYPERCLASSIC ®-MixersDavos,
Switzerland,10 HYPERCLASSIC ®-MixersAmsterdam, The Netherlands,16
HYPERCLASSIC ®-MixersMaastricht, The Netherlands,32 HYPERCLASSIC
®-MixersMasan, South-Korea,104 HYPERCLASSIC ®-MixersKuwait City,
Kuwait,45 HYPERCLASSIC ®-MixersYokohama, Japan,12 HYPERCLASSIC
®-Mixers
INVENT Team meeting
-
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ted
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hn
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Fluid mechanicallyoptimized
Excellent suspensionand homogenizingcharacteristics
Low energyconsumption
Robust construction
Low maintenance
Low operationalcosts
H Y P E R C L A S S I C ®- M i x e re v o l u t i o n 6
worldwideA list of our sales partnersabroad is available by
requestor on the internet:
www.invent-uv.de
e v o l u t i o n 6
You can reach us at:
INVENT Umwelt- undVerfahrenstechnik AG
Headquarters:Am Weichselgarten 3691058 ErlangenGermanyFon: +49
(0) 91 31 - 690 098 - 0Fax: +49 (0) 91 31 - 690 98 - 99E-mail:
[email protected]
Plant 1:Burgstallerweg 1491074 HerzogenaurachGermanyFon: +49 (0)
91 32 - 74 13 70Fax: +49 (0) 91 32 - 74 13 72
Belgium Office:Gladiolenlaan 511770 LiedekerkeBelgiumFon: +32
(0) 53 68 56 61Fax: +32 (0) 53 68 56 61E-mail:
[email protected]
Benelux Office:Kapitein De Rijkstraat 422583 BK Den HaagThe
NetherlandsFon: + 31 (0) 70 - 306 19 98Fax: + 31 (0) 70 - 306 19
97E-mail: [email protected]
US Office:INVENT EnvironmentalTechnologies Inc.99 Bauer
Dr.Oakland, NJ 07436USAFon: +1 201 644 7040Fax: +1 201 644
7045E-mail: [email protected]
u m w e l t u n dv e r f a h r e n s t e c h n i
k
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