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

MixingTechnology

AerationTechnology

Complete Systems

Engineering &Consulting

Software Products

INVENT at a glancew

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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.

i n n o v a t i o n f o r n a t u r e

p r o d u c t s & s e r v i c e s

mixing technology

aerationtechnology

softwareproducts

research &development

the inventteam

engineering &consulting

systemsolutions

INVENT Umwelt- und Verfahrens-techn ik AG develops, produces andglobally implements innovative tech-nical components, systems andprocesses for water and wastewatertreatment.

INVENT was founded in the mid-1980s by a group of fluid mechanicsexperts, as a spin-off from thedepartment of Fluid Mechanics at theFriedrich-Alexander University inErlangen-Nuremberg.

INVENT ’s involvement in theenvironmental field began in 1995with the launch of its hyperboloidmixer technology for applications inwater and wastewater treatment.

INVENT Umwelt- und Verfahrens-techn ik AG in its current organisationoriginated in 1995 as a result of amanagement buy-out. In 2003, itbecame a stock-holding company(AG). Since 2004, INVENT has hada presence in the USA with a sub-sidiary company.

INVENT is represented in all of theworld’s most important markets bycommercial representatives, licensedpartners, and its own branch offices.

With our team of excellent andhighly motivated employees, weconcentrate on our core objectivesof developing and offering ourcustomers innovative, energy-savingand at the same time robust, safeand cost-effective products.

We are convinced that this strategywill enable us to fulfil our vision ofbeing the world market leader in thefield of mixing and aeration.

The focus of our activities is onapplications in municipal andindustrial water and wastewatertreatment. Our product rangeencompasses the following fields:

Innovative mixing technology

Innovative aeration systems

Intelligent system solutions

Engineering and consulting

Software products

p r o d u c t s & s e r v i c e s

When implementing an INVENTsystem solution, INVENT takescare of the basic and detailed en-gineering, the project management,delivery, installation andcommissioning of the plant, andtrains the operating personnel.

INVENT’s Engineering & ConsultingServices carry out fluid mechanicalinvestigations of, for example,mixing and equalisation basins,flow splitters, activated sludgetanks, clarifiers and similar con-structions. In these investigations,analytical, experimental or numericmethods are used as required.

In addition, INVENT offers a rangeof software tools to assistdesigners and operators in theirstatic dimensioning or dynamicsimulation of wastewater treatmentplants.

INVENT became known in the early1990s with the development andlaunch of its energy-saving hyper-boloid mixing technology forwastewater treatment. The INVENTHYPERCLASSIC ® -Mixing andAeration System has in the mean-time been globally successful,and in many markets is alreadyregarded as the standard forvertical mixers.

Today INVENT offers a wide rangeof mixers for all applications inwater and wastewater treatment.

In the area of Aeration Technology,INVENT offers a series of mem-brane aeration systems for thebiological treatment of wastewater.The various systems have beendeveloped and optimized fordifferent municipal and industrialapplications. They differ in theirareas of application, their designs,and the different materials used intheir construction. As a result, weare always in a position to offer anoptimal solution for your aerationneeds.

An INVENT System Solution comprisescarefully selected and designedtechnical components, which com-bine to form a secure and efficientinstallation.

In this way, routine tasks can beautomated and supported, andcost-intensive parameter studiesare made simpler. Design decisionscan therefore be made morequickly and with greater precision.

In all applications, INVENT placesgreat emphasis on a thorough andfocussed analysis of the customer’swishes and requirements. This servesas the basis of our proposal.

mixing technology

aerationtechnology

softwareproducts

research &development

the inventteam

engineering &consulting

systemsolutions

The success of INVENT

Umwelt- und Verfahrenstechnik AG

is closely connected to the

development and launching

of the hyperboloid mixers,

and mixing and aeration systems

in the early 1990s.

Hyperboloid mixers and mixing andaeration systems are highly efficientsystems for the following:

The intensification of mixingprocesses (for example, neutra-lization, dosed addition ofchemicals, etc)

Precipitation and flocculation inwater and wastewater treat-ment processes

Suspension and homogeni-zation in biological phosphateelimination and denitrificationin anaerobic and anoxic tanks

Mixing and aeration in swingzones or Sequencing BatchReactor (SBR1) plants

Mixing and aeration inindustrial wastewater treatmentplants

Mixing and aeration in sludgetanks

1SBR: Sequencing Batch Reactor

Mixing, suspension, homogeni-zation and aeration of rain-water tanks, mixing and equali-sing basins or storage containers

Homogenization and aerationof aerobic-thermophilic sewagesludge treatment plants

These are a few of the possibleapplications of our mixing techno-logy products. If your application isnot listed, please ask for our advice.

32 HYPERCLASSIC ®-Mixers in the wwtp Wien

Simmering, AU

5 out of 120 HYPERCLASSIC ®-Mixers in the wwtp

Berlin-Schönerlinde, D

m i x i n g t e c h n o l o g y

m i x i n g t e c h n o l o g y

7 out of 40 HYPERCLASSIC®-Mixers in the wwtp Berlin-

Stahnsdorf, D

1 out 9 HYPER-CLASSIC ®

-Mixer/Aerators in an

industrial wwtp (Pulp& Paper Industry), B

We offer our hyperboloid mixingtechnology for the applicationslisted above in the following variants:

HYPERCLASSIC ®

The classic hyperboloid mixer or mixing & aeration system, with a dry-mounted drive unit

HYPERDIVE®

The hyperboloid mixing & aeration system with sub-merged drive unit

HYPER FLASH®

The hyperboloid mixer for “flash-mixing” for example for neutralization

HYPERFLOC®

The hyperboloid mixer for precipitation and flocculation processes

In addition, INVENT offers customsolutions, such as the HYPERP ITCH®

add-on for our HYPERCLASSIC ® -mixer. This assists in the distructionof floating sludge on the surface ofthe water. Our HYPERFLOAT®

floating variant is a solutionspecially designed for aeratedlagoons, which can also use ourHYPERCLASSIC ®-mixers for mixingand homogenization.

1 out of 2 HYPERDIVE ®-Mixer/ Aerators in an industrial

wwtp (Pulp & Paper Industry), S

HYPERCLASSIC ®-Mixer/

Aerator in a cageduring installation

3 out of 4 HYPERDIVE®-Mixer/ Aerators in an industrial

wwtp (Petro-chemical Industry), NL

For basins that cannot be emptied,we offer our HYPERCAGE® solution.In this case, the hyperboloid mixeror mixer aeration system is builtinto a cage, which because of itsdead weight can be lifted into afilled basin for installation.

For carousel tanks or similarapplications that require horizontalcirculation, we offer ourCYBERFLOW® series of mixers.

As well as these standard series ofmodels, we also offer custom-mademixers for industrial applications,which are optimally designed andbuilt for special processingrequirements.

Details - E-FLEX®-Aeration System

Liftable E-FLEX®-Aeration Systemin a municipal wwtp, B

a e r a t i o n t e c h n o l o g y

INVENT offers a whole

scope of aeration systems

ranging from mechanically

operating hyperboloid

mixing and aeration systems

for industrial wastewater

treatment, to various

models of membrane aeration

systems.

membrane aeration system, which is identical to theE-FLEX® -membrane aeration system, except that it uses a silicone membrane

E -F LEX® F LOAT , the floating fine-bubble aeration system foraerated basins

No two aeration system applicationsare the same. The requirements ofaeration systems are therefore quitediverse, and cannot be satisfied witha single design of aeration system.

Important determining factors includethe composition of the wastewater,the oxygen requirement, the depthof the water, climatic conditions, thechoice of process etc. These para-meters have a decisive influence onthe choice of aeration system.

INVENT offers the following aerationsystems:

Robust mechanical mixing andaeration systems, in the form ofHYPERCLASSIC ® and HYPER-D IVE®

The reliable and versatileE -F LEX® - membrane system,which is based on EPDM hosemembranes

For particularly demandingapplications, the S IL IKOFLEX®-

INVENT offers

a complete range

of aeration systems,

from mechanical hyper-

boloid mixing and aeration

systems to fine-bubble

aeration systems, and through

to coarse-bubble

aeration systems.

TEX-FLEX ®-Aeration System in a municipal wwtp, B

E-FLEX®-Aeration System in a municipal wwtp, CZ

CBA ®-Aeration System in an industrial wwtp (Pulp & Paper Industry), S

Just call us for further informationor visit us under www.invent-uv.de

The TEX-FLEX® -aerationsystem, an extremely robustmembrane aeration system thatproduces medium-sizedbubbles. It is based on avirtually indestructible fabricmembrane, and has proveditself especially in deep waterand demanding applications.

The CBA -aeration system is acoarse-bubble aeration system,constructed entirely out ofstainless steel. It isindestructible, and wasdeveloped specially for use inmoving-bed reactors.

As well as these standard solutions,we offer additional tailoredsolutions: for example, all E -F LEX®

and S IL IKOFLEX® -membraneaeration systems can also besupplied as removable systems. Thiscould, for example, be suitable forupgrades to carousel basins. In thiscase, several E -F LEX® -aerationgrids would be mounted together ona removable framework. Thisproduces compact units that caneasily be lifted in and out.

s y s t e m s o l u t i o n s

A complete system solution fromINVENT comprises, depending onthe customer’s requirements, thebasic and detailed engineering,project management, delivery of themechanical components, installationof the plant, and training of plantpersonnel.

The mechanical components, suchas mixers, aeration systems, pumps,blowers, armatures and instrumen-tation, control and automationsystems, are carefully selected foran INVENT system solution, andcoordinated with each other.

INVENT takes responsibility for theentire scope of the delivery. Thisapproach reduces the number ofinterfaces and potential sources offailure.

As a result of the exceptionalsuitability of the HYPERCLASSIC ® -mixing and aeration system forSequencing Batch Reactor plants,we have more than 15 years ofexperience and considerable know-how in this field. For this reason,we offer SBR plants as an INVENTsystem solution. In this case, wealso supply a special clean-waterdecanting system and a cyclestrategy that is tailored to theindividual application.

In the field of construction of SBRplants, INVENT has carried outprojects for the most varied appli-cations. These include municipalwastewater treatment, andnumerous industrial applications infields such as brewing, the chemi-cal industry, the pharmaceuticalindustry, refineries, and the foodand drinks industry.

To suit customers’ needs,

INVENT will also take over

the complete layout, planning,

project management, supply

and assembly, commissioning

and service of the plant.

In the municipal field, INVENT hasnumerous references round theworld, starting from small andmedium-sized plants all the way upto large municipal sewage treatmentplants. We have specialist know-how for the treatment of wastewaterfrom the fermentation of biowaste.

There is a further INVENT standardsolution for so-called pool purifi-cation plants. For that kind ofwastewater treatment plant, wesupply floating aeration systems,floating mixers, and a speciallydeveloped clarifier cleaning system.In this field too, INVENT hasextensive know-how and manyyears of experience.

If you are working on a project ofthis type, or want to upgrade anexisting plant, please contact us.

Blower station with air piping system

HYPERCLASSIC®-Mixer/Aerator in an SBR-

plant

3D CAD plant representation

of an INVENT SBR -plant

1,4 1,6 m/s

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In particular, the mechan i ca leng ineer ing area comprises – apartfrom design contracts – optimizationof components and static analysis,using the finite element method(FEM). Modern 2D and 3D softwarepackages are used as design tools.In this way, even sophisticateddesign tasks can be economicallyexecuted.

The service package for „F lu idMechan i cs“ is seamless. Due tothe use of 3D design tools, newlydeveloped parts go through arange of fluid mechanical testswithout delay. INVENT offers twoprocedures. One of which isdirectly performed in INVENT 'sfluid dynamics laboratory, via

rap id prototyp ing , where the mostmodern laser and ultrasonicmeasuring equipment techniques areused to determine turbulent fields ofvelocity. Here all standard methodsof measurement and visualization offlow fields are also available. Thesecond procedure involves individualinterfaces to high performance CFD-programes ( computat iona l f lu iddynamics ) for the numericalsimulation of flow on the computer.When used in combination, thesehighly modern methods offeran almost unlimited variety ofpossibilities, such as:

The development andoptimization of components(e.g. mixers, impellers, gatevalves, reactors, etc.)

The optimization of st ruc tures(e.g. activated sludge tanks,stirred tank reactors, mixingchambers, flow splitters,pumping stations, finalsedimentation tanks, etc.)

The measur ing of turbulent flowfields, using laser and ultra-sonic measuring equipment tech-niques, either as a model, intechnical scale or in large scale

s imu lat ion of complex flows(e.g. drinking water filters, finalsedimentation tanks, activatedsludge tanks, distributionchannels, etc.) using CFD.

The opt imizat ion of p lants is anotherinnovative INVENT service. Anincrease in efficiency of only a fewpercent can in many circumstanceslead to a significant savings in costs,and therefore an overall improve-ment of the company's results.

We analyze plants for water andwastewater treatment and productionplants for the material processingindustries. We develop proposals toimprove their performance. Throughour own experience and through aninternational network of experts, wecan always find a competent solutionto increase the performance of yourplant.

The field of engineering and

consulting takes into account

the strongly increasing demand

for outsourced engineering

services. INVENT specializes itself

in the three areas of mechanical

engineering, fluid dynamics and

plant optimization.

e n g i n e e r i n g & c o n s u l t i n g

2IMPT: INVENT MixingProduct iv i ty Tool

Our objective is to develop

and offer intelligent and

user-friendly software, which

will enable planners, plant

builders and operators to

layout, define, simulate and

optimize the operation in

process engineering plants.

Our standard offer is composedof ANAwin and Capdet , twointernationally proven layoutprograms for static dimensioning,as well as GPS-X , the world'sleading sof tware package for thedynamic simulation of wastewatertreatment plants. Additionally, weoffer special solutions to customdesign components such as mixers,aeration systems, pipe work orother components.

Our extensive experience indeveloping software solutionsenables us to develop and supplypackages, which can be integratedinto a Customer RelationshipManagement (CRM) system.

For the material processing industry,the sof tware package “IMPT2” hasbeen developed for lay ing out mix ingtank reactors. This software comprisesall practicable mixing tasks (includingmicro-mixing) and mixers. It can alsobe extended into a specializedsystem and can be supplied withinterfaces to all current CFD programs.

s o f t w a r e p r o d u c t s

r e s e a r c h & d e v e l o p m e n t

At our headquarters in Erlangen,INVENT carries out research innumerous fields. In our fluidmechanics laboratory, we can carryout experiments to laboratory andtechnical standards, in order todevelop and optimize our products.

For this work, the latest measuringtechniques, such as Laser DopplerAnemometry (LDA) and UltrasoundDoppler Anemometry (UDA) are atour disposal.

In addition to these experimentalmethods, the latest computer-aidedconstruction and simulation tools areused.

INVENT understands that researchand development are the basis forthe continual improvement of ourproducts and processes.

All INVENT products and processeshave been developed in-houseusing methods from the latest fluidmechanics theories. During thisprocess, we cover all stages our-selves, from conception throughmodelling, scale-up and full-sizetesting. Partial co-operation withuniversity research institutes ensuresthat we can optimize our efforts inall areas of research.

This wide-ranging research intoprinciples and applications has theadvantage for our customers that wecan always offer mature productswith exceptional characteristics.

He who believes

that he is something

will no longer

become anything.

(Socrates,

470 – 399 BC)

Flow visualization in the

INVENT Fluid Mechanics Laboratory

The findings from the laboratoryand pilot tests are transferred by ourengineers to full scale using specialscaling-up methods. For the vali-dation of these scaling-up calcu-lations, various types of large-scaletest equipment are available.

For example, in Erlangen wemaintain a mixer test rig in whichmixers with shafts up to 8m longcan be mounted. For aeration testsand mixer experiments, we have atank more than 10m in diameter,with a maximum water depth ofmore than 8m.

Aeration Laboratory

INVENT Testtank for large-scale mixing and aeration tests

INVENT Designteam

INVENT Mixer test rig

r e f e r e n c e s

Chosen References:

Berliner Wasser Betriebe,Germany, (3 installations)KW Wien Simmering, AustriaARA Zürich-Dübendorf,SwitzerlandStockholm Vatten, SwedenDEPURBAIX, Barcelona, ESPwwtp Doha West, Quatarwwtp Jabel Ali, Dubai, UAEwwtp Baillongang, Shanghai, People’s Republic of ChinaNew York DEP, USA(3 installations)wwtp Hartford, CT, USAwwtp Morelia, MexicoBINDING Brauerei, GermanySchneider Brauerei, GermanyModelo Brauerei, MexicoDOW Chemicals, CAN & BRDSM, ESPCOGNIS, FranceKimberly Clark, UKStora Enso, SwedenSouth African Pulp & Paper (SAPPI), BelgiumShell, ARand many more

INVENT®, HYPERCLASSIC ®, HYPERDIVE®, HYPER FLASH®, HYPERFLOC®,CYBERFLOW®, E -F LEX®, S IL IKOFLEX® are registered trade-marks ofINVENT Umwelt- and Verfahrenstechnik AG.

In more than 15 years, INVENThave designed, produced, installedand commissioned numerous plantsworldwide.

We are proud to have completedall these projects successfully inpartnership with our customers.

A selection of our customers arenamed in the following list.

8 HYPERCLASSIC ®-Mixer/Aerators in an

industrial wwtp (Textile Industry), Indonesia

Our team consists of

highly motivated, qualified

employees and sales

partners, who co-operate

as partners towards the joint

objective of giving our

customers one hundred

percent satisfaction.

Successful worldwide

Selected impressions of INVENT reference plants

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You can reach us at:

INVENT Umwelt- undVerfahrenstechnik AG

Headquarters:Am Pestalozziring 2191058 ErlangenGermanyFon: +49 (0) 91 31 - 690 98 - 0Fax: +49 (0) 91 31 - 690 98 - 99E-mail: info@invent-uv.de

US Office:INVENT EnvironmentalTechnologies, Inc.216 Little Falls RoadUnit 8Cedar Grove, NJ 07009USAFon: +1 973 571 2223Fax: +1 973 571 2474E-mail: info@invent-et.com

worldwideA list of our sales partnersabroad is available by requestor on the internet:www.invent-uv.de