Tsurumi TRNSubmersible aerator

Auto-suction submersible aerator for communal andindustrial waste water clearance and treatment.

400V50Hz

2

Submersible motor

Water and airare mixed here

Suctionpipe

Flow generated byair bubbles

Flow generated bycentrifuged water

Air

Guide vane

Rotor

Water

round tank

rectangular tank

square tank

Ratio of tank length to width:1:1.5 or less Ratio of tank length to width: 1:2

The Tsurumi TRN-submersible aerator is asubmersible motor, mixer and compressor inone unit. The rotor of the submersible aeratoris directly connected with the motor shaft. Asshown in the illustration below, the rotation ofthe rotor causes a circular movement of thewater, creating negative pressure around therotor. Air is then automatically suctioned fromabove through the suction line. At the sametime water flows in from below into the areaaround the rotor - this is then intensively

mixed with air due to the rotation of the rotor.A fine air-water mixture is formed that is spunradially outwards at high speeds through thechannels of the guide ring. The flow that thiscreates ensures that every part of the tank isreached and that the water is uniformlyoxygenated.

TRN-submersible aerator

Features• High oxygen intake

optimum distribution and highoxygen yield thanks to high levelof microscopic, air bubbles.

• Perfect mixing within the tanka strong flow of water mixed with airensures that every part of the tank is aerated and that no sediment is formed.

• Simple, robust and compactThe bearings and the oil bath around the shaft seal are oversized. The air suctioned from above presses thewater away from the rotor and forms anair cushion, preventing the shaft seal from touching water. This ensures fault-free 24 hour operation andensures long product life.

FLOW SAMPLE

3

ADVANTAGES- thorough mixing of the

waste water, thereby preventingsediments

- tiny air bubbles provide aeration withhigh oxygen utilisation

- completely insensitive to frost

- low noise level

- no spray formed

- simple installation and servicing thanks to simple construction

- low risk of blockage

- large oil chamber

- Casing made of solid cast iron

- Shaft seal is protected from waterduring operation

- A proven track record, with tens of thousands produced over more than 20 years

Uses in waste water clearance and treatment are as follows:

Mixing and equaliser tanks:Standardising of waste water sludge loads and quantities and preventing odoursdeveloping

SBR reactions and sludge activation tanks: Breakdown of organic substancesSludge stabilisation: Preventing development of odour and further oxidation ofthe organic components in the waste water

Neutralisation:Neutralisation of alkaline waste water with fumes or CO2

Flotation:Flotation of oils and greases

Pond aeration: Improves the aeration in natural waters such as in eutrophication

To prevent blockage caused by fibresand solid particles the TRN-series has aspecial rotor and a specially designedsuction plate.

4

Standard accessories:

• Sound absorber and valve

Subsidiary flow

Primary flow:

mixing bycentrifuged water

mixing by rising airbubbles

Main flow: direct oxygen intake thanks to airbubbles

Subsidiary flow: indirect oxygen intake by mixing

Flow picture:

The open rotor of the TRN series suctions a large volume of water for the motor power throughthe pump basket. This water is then mixed with air and distributed horizontally in all directionsthrough the channels of the guide ring.

The top of the rotor is hollow and allows the air that has been suctioned in to fill the area aroundthe shaft seal so that it can mix with the water at the rotor. One consequence of this is that alayer of air is formed separating the shaft seal from the medium and thereby substantiallyincreasing the life of the shaft seal. Another effect is that the water that is suctioned in isoxygenated with tiny air bubbles, effectively aerating the waste water.

To prevent blockage caused by fibres and solid particles the TRN series has a special rotor anda specially designed suction plate.

The long life and low maintenance of the TRN submersible aerator is due specifically to thespecially selected materials. Only cast iron and stainless steel comes into contact with the water.Parts that are subject to particular wear such as the shaft, screws, the rotor and suction platesare made of stainless steel. The dual mechanical seal (SiC/SiC) is a particular feature of theTRN aerator; this is cooled by an oil bath of at least 0.5l per kW motor output.

ModelDiameterAirpipe

mm

3232505050808080100150

Motoroutput

kW

0,751,52,23,75,57,512172440

NumberOutlets

6666666688

Rpm

2850285014501450145014501450145014501450

Startmethod

directdirectdirectdirectdirectdirect s.-d.s.-d.s.-d.s.-d.

Dryweight

kg

5555140150170190200220460635

max. rotordepth m

3.5 m3.5 m3.6 m4.0 m4.0 m4.5 m6.0 m6.0 m6.0 m6.0 m

Phases

3333333333

Nominalcurrent

A

2,43,55,38,612,115,925,735,248,083,0

Cablelength

m

Model Guide ringDepth

3.5 m3.5 m3.6 m4.0 m4.0 m4.5 m6.0 m6.0 m6.0 m6.0 m

CrosssectionPrimary

flow

1.4 m1.8 m2.4 m3.0 m3.8 m4.4 m5.2 m5.6 m6.3 m7.3 m

Cross sectionSubsidiary

flowRound tank

3.5 m4.5 m6.0 m7.0 m9.0 m10.0 m12.0 m13.0 m14.5 m17.0 m

Cross sectionSubsidiary

flowSquare tank

3.0 m4.0 m5.5 m6.5 m8.0 m9.0 m11.0 m11.5 m13.0 m15.0 m

32TRN2.7532TRN21.550TRN42.250TRN43.750TRN45.580TRN47.580TRN41280TRN417100TRN424150TRN440* Dry weight of the pump without cables* Sound emissions measured at max. installation depth at 1m distance from the sound absorber (mean of four measurements)* Air volume and oxygen intake rate measured at max. installation depth (for motor output of 12kW or over: at 5m)

32TRN2.7532TRN21.550TRN42.250TRN43.750TRN45.580TRN47.580TRN41280TRN417100TRN424150TRN440

10101010101010202020

Airvolume

m3/h

720395578124157202388528

Primary and subsidiary flow measured at max. installation depth

Installation types:The free-standing installation is the most common type of installation. The submersible aerator is placed on thefloor of the tank without further anchorage. Its weight prevents the device from moving. The submersible aerator canbe lifted out of the tank with a crane for servicing without having to empty the tank.For free-standing installation a simple metal stand can be used to increase the maximum tank depth in which the

submersible aerator can be installed by 0.5m without primarypressure.

The inlet opening can also be extended with a pipe; the wateris taken from close to the base and the air above is centrifuged.This allows the maximum tank depth to be increased by max.1.5m.

Stationary installation is generally used for fitting in deeptanks (also in combination with aeration with primary pressure,etc.) or if assembly or disassembly is not possible with a mobilecrane. In this case the submersible aerators are fitted between guide pipes or on abridge. Lifting equipment is required to lift it out of the tank.

Floating installation is used, for instance, to aerate unsecured tanks, ponds, lakesor rivers. The submersible aerator can also be secured oscillating on ropes or can be firmly anchored in position.Hanging installation with suitable floats is also an option. A mobile crane is generally used to lift the aerator in andout of the tank.

5

The motor is a conventional squirrel cage motor with the followingfeatures:

• The bearings are over-sized (see illustrations on pages 11 and 12).• The stripped cable ends in the packing box are sealed in synthetic resin so as to

prevent water from penetrating the motor.• The directly started motors have a thermoswitch (motor protection) that

resets automatically. Within the cable wraps star delta motors havea thermoswitch for each phase.

• The double end face seal (SiC/SiC) is lubricated and cooled by an oil bath, that is much larger than in other pumps with a comparable motor performance.

6

Air volume - water depth - curvein clear water under normal conditions the air volume can deviate ±5%

Air

volu

me

m3 /h

Water depth m

Air

volu

me

m3 /h

Water depth m

AERATION UNDER PRE-APPLIED PRESSURE:The aeration system consists of a compressor and a TRN-series TSURUMI submersible aerator.

A tank, for example is 9m, with 6m for the primary pressure of the compactor and 3m for the aerator.This system substantially reduces the necessary power input and consumption and requires much less space.The oxygen transfer rate is also increased thanks to the higher potential installation depth. This increases the timethe air bubbles take to reach the surface of the water in the aeration tanks.

Aerator

Compactor

over

all s

ubm

ersi

on d

epth

Prim

ary

pres

sure

of

the

com

pact

or

Pre

ssur

eof

the

aera

tor

7

EXAMPLES OF ACTIVATED SLUDGE PROCESS

Contact activated sludge process

Conventional activated sludge process

Extended activated sludge process

8

Influx

Rake

Fine rake

Redirecting tankwith rake

Equaliser tank(primaryaeration)

Replacement pump

Pump operationalStand-by pump

Controltank

Contact activated sludge tank

Sludge deposit tank Sludge thickening

Flotation tank

Sludgeabsorptionequipment

Disinfection tank

Defoaming pump

Waste tank

Outflow

Influx

Rake

Fine rake

Redirecting tankwith rake

Primaryclarificationtank(primaryaeration)

Equaliser tank(primaryaeration)

Rake

Sieve/rake

Control tank

Pump operationalStand-by pumpReplacementpump

Sludge deposit tankSludge thickening

Flotation tank

Defoaming pump

Waste tank

‘Outflow

Disinfection tank

Sludge return

Control tank for sludge return

Influx

Sand container

Grit trap

Fine rake

Inflowvia rake

Primaryclarificationtank(primaryaeration)

Replacement pump

Pump operationalStand-by pump

Sludge deposit tankSludge thickening

Sludge activation tankFlotation tank

Sludgeabsorptionequipment

Defoaming pump

Waste tank

Disinfection tankSludge return

Control tank for sludge returnControl tank

Rake

Sieve/rake

Equalising reservoir(primary aeration)

Outflow

Sludge activation tank

Sludgeabsorptionequipment

9

INSTALLATION EXAMPLE 32TRN2.75

INSTALLATION EXAMPLE 80TRN417

10

DIMENSIONS in mm

Silencer and valve

80TRN47.5 / 80TRN412

Air pipe ø32ø50ø80ø100ø150

A180230245345448

D--

585760863

C275370

--

740

øB116154180256370

50TRN45.5

Values in ( ) for 50TRN43.7

50TRN42.2 / 50TRN43.7

32TRN2.75 / 32TRN21.5

150TRN440

80TRN417 100TRN424

Values in ( ) for 80TRN412

11

COMPONENTS AND MATERIAL

32TRN2.75 / 32TRN21.5 50TRN42.2

50TRN43.7 50TRN45.5 / 80TRN47.5

No.1

1819212225

26A26B30353648

NAMECableAir PassageGuide VaneRotorSuction CoverMechanical SealSpacerOil sealOil LifterOil PlugLubricantThreaded Flange

No. 52A52B53545556606472

NAMEUpper BearingLower BearingMotor ProtectorShaftRotorStatorBearing HousingMotor FrameEye Bolt

MATERIAL

EN-X30Cr13

EN-GJL-150EN-GJL-150EN-X5CrNi18-10

MATERIALH07RN-FEN-GJL-200EN-GJL-200EN-GX12Cr14EN-GX12Cr14Silicon CarbideCarbon SteelNitrile RubberPlasticEN-X5CrNi18-10ISO VG32EN-GJL-200

No.11819212225

26A26B28303536

NAMECableAir PassageGuide VaneRotorSuction CoverMechanical SealSpacerOil SealMiddle PlateOil LifterOil PlugLubricant

No.4852A52B53545556606472

NAMEThreaded FlangeUpper BearingLower BearingMotor ProtectorShaftRotorStatorBearing HousingMotor FrameEye Bolt

MATERIALEN-GJL-200

EN-X30Cr13

EN-GJL-150EN-GJL-150EN-X5CrNi18-10

MATERIALH07RN-FEN-GJL-200EN-GJL-200EN-GX12Cr14EN-GX12Cr14Silicon CarbideCarbon SteelNitrile RubberEN-X12Cr13PlasticEN-X5CrNi18-10ISO VG32

No.1

1819212225

26A26B28303536

NAMECableAir PassageGuide VaneRotorSuction CoaverMechanical SealSpacerOil SealMiddle CoverOil LifterOil PlugLubricant

No.4852A52B53545556606472

NAMEThreaded FlangeUpper BearingLower BearingMotor ProtectorShaftRotorStatorBearing HousingMotor FrameEye Bolt

MATERIALEN-GJL-200

EN-X30Cr13

EN-GJL-150EN-GJL-150EN-X5CrNi18-10

MATERIALH07RN-FEN-GJL-200EN-GJL-200EN-GX12Cr14EN-GX12Cr14Silicon CarbideCarbon SteelNitrile RubberEN-X12Cr13PlasticEN-X5CrNi18-10ISO VG32

No.161819212225

26A26B283035

NAMECableStuffing BoxAir PassageGuide VaneRotorSuction CoverMechanical SealSpacerOil SealMiddle PlateOil LifterOil Plug

No.36485052A52B53545556606472

NAMELubricantThreaded Flange Motor BracketUpper BearingLower BearingMotor ProtectorShaftRotorStatorBearing HousingMotor FrameEye Bolt

MATERIALISO VG32EN-GJL-200EN-GJL-200

EN-X30Cr13

EN-GJL-150EN-GJL-200EN-X5CrNi18-10

MATERIALH07RN-FEN-GJL-150EN-GJL-200EN-GJL-200EN-GX12Cr14EN-GX12Cr14Silicon CarbideCarbon SteelNitrile RubberEN-X12Cr13PlasticEN-X5CrNi18-10

Your supplierTsurumi (Europe) GmbHHeltorfer Straße 14D-40472 DüsseldorfTel.: +49 (0)211-4179373Fax: +49 (0)211-4791429Email: vertrieb@tsurumi-europe.comwww.tsurumi-europe.com

Cat

. no

. TR

N-E

-03/

08

We reserve the right to change specifications and designs herein for improvement without prior notice. Our pumps are for professional use only. In the event thatTsurumi (Europe) GmbH have, in exceptional cases taken over, a manufacturer’s warranty, this entitles the end-user to assert remedy free of charge against Tsurumi(Europe) GmbH due to any defect to the product occurring during the guarantee period (see below), also then when the warranty claims against the seller do not orno longer exist. In the event of malfunction, which is attributable to the improper handling by the enduser, no guarantee claim shall arise. Further claims shall notresult from the warranty, unless if something to the contrary has explicitly been determined. The decision as to whether remedy is effected by way of replacement

or repair shall be at the choice of Tsurumi (Europe) GmbH. The claims shall be time barred after a period of three months after expiry of the guarantee period,however, not before expiry of the warranty period which is valid towards the seller. In the event of doubt, the warranty period shall correspond with the warranty

period which is valid between the end-user and his seller.

80TRN412 / 80TRN417 100TRN424

150TRN440

No.16

1819212225

26A26B283035

NAMECableStuffing BoxAir PassageGuide VaneImpellerSuction CoverMechanical SealSpacerOil SealMiddle PlateOil LifterOil Plug

No.36485052A52B53545556606472

NAMELubricantThreaded Flange Motor BracketUpper BearingLower BearingMotor ProtectorShaftRotorStatorBearing HousingMotor FrameEye bolt

MATERIALISO VG32EN-GJL-200EN-GJL-200

EN-X30Cr13

EN-GJL-150EN-GJL-200EN-X5CrNi18-10

MATERIALH07RN-FEN-GJL-150EN-GJL-200EN-GJL-200EN-GX12Cr14EN-GX12Cr14Silicon CarbideCarbon SteelNitrile RubberEN-X12Cr13 EN-GX12Cr14PlasticEN-X5CrNi18-10

No.16181921222325

26A26B283035

NAMECableStuffing BoxAir PassageGuide VaneRotorSuction CoverStrainerMechanical SealSpacerOil SealMiddle PlateOil LifterOil Plug

No.36485052A52B53545556606472

NAMELubricantThreaded Flange Motor BracketUpper BearingLower BearingMotor ProtectorShaftRotorStatorBearing HousingMotor FrameEye Bolt

MATERIALISO VG32EN-GJL-200EN-GJL-200

EN-X30Cr13

EN-GJL-150EN-GJL-200EN-X5CrNi18-10

MATERIALH07RN-FEN-GJL-150EN-GJL-200EN-GJL-200EN-GX12Cr14EN-GX12Cr14DIN 1.0040+EN-X5CrNi18-10Silicon CarbideDIN 1.0040Nitrile RubberEN-GX12Cr14PlasticEN-X5CrNi18-10

No.136181921222325262830

35A35B

NAMECableGlandStuffing BoxAir PassageGuide VaneRotorSuction CoverStrainerMechanical SealOil sealMiddle plateOil distributorOil screwOil screw

No.36485052A52B5354555660647172

NAMELubricantThreaded flange Motor BracketUpper BearingLower BearingMotor ProtectorShaftRotorStatorBearing HousingMotor FrameShaft SleeveEye Bolt

MATERIALISO VG32EN-GJL-200EN-GJL-200

EN-X30Cr13

EN-GJL-200EN-GJL-200EN-X5CrNi18-10EN-X5CrNi18-10

MATERIALH07RN-FEN-GJL-200EN-GJL-200EN-GJL-200EN-GJL-200EN-GX12Cr14EN-GX12Cr14DIN 1.0040+EN-X5CrNi18-10Silicon CarbideNitrile RubberDIN1.4008PlasticEN-X5CrNi18-10EN-X5CrNi18-10