Submersible Mixer Series

High speed submersible mixer Medium speed submersible mixer Low speed submersible mixer
 Save energy with powerful mixing.
Meet wide-ranging needs with
various lineups
High Speed Submersible Mixer
SM Series For details,
refer to pages
0.25 - 15 kW
• Mixing in a pump well, sludge storage tank or 4–15p
equalization tank
• Crushing scum

With Tungsten Carbide Spraying Propeller Aeration Mixer

SM-W/SME-W Series SM-R Series

SM/SME
0.9 - 7.5kW 0.75, 1.5kW

SM-W/SME-W SME-R
For details, For details,
refer to pages refer to pages
16∙17p 18∙19p

Medium Speed Submersible Mixer For details,

refer to pages
Low Speed Submersible Mixer For details,
refer to pages

SMM Series 20∙21p SML Series 22−25p

0.75 - 2.2kW 1.5 - 3.7 kW
• Mixing of denitrification tank, reaction tank, • Oxidation ditch
reaction tank • Water flow generation
• Mixing the carriers in wastewater treatment
Flow rate (m/s)
Flow rate (m/s)
0.35

0.30

0.25

0.20

0.15

0.10

0.05

0.00

SMM SML
2
 ShinMaywa's submersible mixers can
be installed anywhere.
With various lineups, we will address requirements for agitation,
mixture and water flow generation in water-related facilities in all fields,
including industry, water quality and the environment.
Each and every one of our products incorporates advanced technologies perfected
by ShinMaywa through the development of our water treatment-related equipment.

■ Example of Submersible Mixer Application at Wastewater Treatment Plant Purpose

Preventing the sedimentation
Pre-treatment Biological treatment of activated sludge
Transfer Equalization Uniform mixing
pump station tank Denitrification Reducing scum formation
tank

Chemical treatment Points of use

Screen Anaerobic
Primary tank Final
Pump sedimentation sedimentation Sludge storage tank
well Grit
chamber tank tank Pump station for wastewater
collection system
Pump well
pH regulating tank
Reaction tank
(Denitrification tank,
Anaerobic tank)
Anaerobic digestion Lime mixing
Sludge Sludge storage tank tank Discharge
receiving tank Aerobic
tank digestion
tank
Sludge treatment
Mixer application area

■ Advanced Wastewater Treatment Method ■ OD (Oxidation Ditch) Method

Circulating water The oxidation ditch method performs aeration while circulating activated sludge in a
circulating channel.
The repeated starting and stopping of the diffuser
enables anaerobic and aerobic mixing,
just like an advanced wastewater Water flow
Blower
Inflow

treatment method.
ShinMaywa low speed submersible
Effluent

mixer can be used for this

Anaerobic mixing Aerobic mixing system.
Grit chamber and screen Primary sedimentation tank Reaction tank Final sedimentation tank

Conventionally, purification is performed by mixing activated sludge while supplying oxygen. However, the
conventional method has the disadvantage of insufficient removal of nitrogen and phosphorus. To overcome Low speed
this disadvantage, anaerobic mixing, in which no oxygen is supplied, and aerobic mixing, in which oxygen is submersible mixer
supplied, combine to maximize the capability of various bacteria, as an advanced wastewater treatment
Diffuser
method.

■ Installation with the mixer oriented downward For details,

■ Flow stabilizer for a low water level (optional) For details,
refer to pages refer to pages

8p Flow stabilizer
9p

■ Generating a water flow For details,

refer to pages
Channels or park ponds Channel and/or shallow rivers
26p Dams

Helps prevent freezing

Helps improve water quality. at dam intakes.

For various examples of submersible mixers, refer to pages 26 and 27.

3
 High Speed Submersible Mixer

SM/SME Series
ShinMaywa submersible mixers are robust.
We focus on the smallest details.

SME series Newly developed propeller and motor

realize to reduce power consumption
High efficiency propeller High efficiency motor

Adopt 3-D wing propeller Optimum design of winding

• Up to 40% reduction in power specifications and silicon steel sheet
consumption compared with
conventional models. realize energy saving
• Optimum design of propeller using
CAE/CFD. Oil plug
• Achieving the high performance airfoil.
• Improving wear resistance.
• Large thrust propeller for clear Mechanical seal High efficiency
water can be used for wastewater.
propeller
Draft ring

SM/SME series
Assist generating
more efficient flow.

0.9kW - 7.5kW (50Hz)

Features 1.1kW - 7.5kW (60Hz)

Improved reliability
• To prevent cable entanglement, support coil and cable
fixture are equipped.
• Adopt the cable with fiber reinforcement, core wire seal
shut the water penetrating into the motor.
• Equipped with a leakage water chamber as standard,
it protect the bearing and motor from leaked water and
oil.
• Employing a large shaft with shorter overhang prevents
shaft deflection and mechanical seal reliability is greatly
improved.

Superb durability
• Employs double mechanical seal with silicon carbide
(SiC) seal faces that is proven for submersible pumps.
• Employed large size bearing for load side, and
anti-creep bearing for rear side.
• Propeller has special hardening treatment to improve
wear resistance.

Efficient mixing by simple adjustment Drain plug

• As position and angle (left / right and up / down) can be
easily adjusted to the most efficient location, efficient
mixing can be realized in accordance with shape, size and Shaft Dust seal
depth of tank, liquid characters and mixing purpose. High durability with 316 Double rubber seals prevent
stainless steel and shorten penetration and tangling of foreign
overhang. matters.

4
 SM/SME
series
Cable (with core wire seal)

Support coil
To fix cable vertically and
prevent cable tangling.

Adopt the cable with fiber

reinforcement, core wire seal shut
the water penetrating into the motor.

High efficiency Cable fixture

motor

Allows you to adjust the cable length and fix the

cable in the upper part of a tank to prevent
sagging.

Slide
Suitable for square pipe of
Load side bearing installation equipment and no
ShinMaywa Adopt large size bearing which limitation of installation depth.
maintenance
point has durability under harsh
environment such as sludge, etc. Anti-load side bearing
Leakage water chamber Adopt the anti-creep bearing.
Leakage detector can be equipped (option).
Possible to inspect through inspection plug Applicable Condition
for leakage water chamber.
Liquid type Various types of wastewater and sludge
Specific gravity 1.1 or less
ShinMaywa
maintenance
point Drain plug for motor chamber Viscosity 1.000mPa's or less
Temperature 0°C - 40°C
Oil chamber Chlorine ion 1,000mgl or less
Providing an oil plug on the upper Sludge concentration 5% or less
surface and a drain plug on the lower Water depth 10m or less
surface, oil change can be taken pH 6-9
without changing the posture of the mixer. • Applicable liquid specific gravity and viscosity vary per
product model.
• Some liquid type may be supported a range exceeding the
above scope.
Please contact us
5
 High Speed
High SpeedSubmersible
Submersible SM/SME
Mixer
Mixer Series
Series SM

Installation
Installation device (for
Equipment (forSM15
SM15 - 75)

Simple adjustment for effective mixing.

Simple adjustment for effective mixing.
Easy
EasyPull-out of Mixerfor
changeover from the Tank
adjustment
Hanger pipe
Lifting Pole
• Using
Usinghanger pipe (Option),
Lifting Pole (option),lifted
liftedmixer
mixercan
caneasily
easily Handle (option)
(option)
rotate
rotatetotofloor
floorside
side and
and make
make easy inspection
changeover.and (option)
(option)
adjustment. Hanging
Change Overchain
Chain
(option)
(option)

Slab
Slab height
height Guide
Guidebar
Bar
(304(304 stainless
stainless steel)steel)
Required height
Required height
for
forabracket
bracket

Upper bracket
(304Upper Bracket
stainless steel) Chain
Chain
(304 stainless steel) (304 stainless
(304 stainless steel) steel)

Required
RequiredSlab
slabHeight
height Base Base
(304 stainless
Stainless steel)
steel
Guide barBar
Guide Required
Required heightheight
for aforbracket
bracket Slab
Slabheight
height(reference)
(reference) (304 stainless steel)
Anchor
Anchor bolts
Bolt
50pipe
50 pipe 150mm
150mm 200mm
200mm (304 stainless
Stainless steel)
steel
100pipe
100 pipe 200mm
200mm 250mm
250mm (304 stainless steel)

Left / Right Angle Adjustment

Left/Right
• Mixing direction in Angle Adjustment
horizontal can be adjusted
withindirection
Mixing + / - 60°inwith 20° pitch.
horizontal can be adjusted
within +/- 60˚ with 20˚ pitch.

1. Remove the pin. 2. Determine angle 3. Insert the pin. 60 60

using the handle. 60° 60°
qRemove a Pin... wDetermine angle eInsert the pin
with Handle
6
 SM/SME series

WhenWater
When watercannot
cannotbebe drained
Drained fromfrom an existing
an Existing Tank tank

Equipped with an installation equipment

equipped with an installation device requiring no water drainage
SM-D
requiring noSeries
water drainage
Output: 1.5 - 2.8 kW Output: 1.5 - 2.8 kW
SME-D Series
A submersible
A submersible mixermixer thatenergy
that saves savesbyenergy
powerfulby powerful
mixing mixingwithout
can be installed can beshutting
installed
down the water-treatment facility.
without shutting down the wastewater treatment facility.
Features
Features
Adopts a delta receiving structure
• Adopts a delta
in which receiving
a slanting guidestructure
bar is in which a slanting guide bar
isexposed
exposedtotoreactive forcea from
thrust from a
submersible mixer.
• Asubmersible mixer.
skid base that can be inclined to any angle absorbs the
A skid base
inclination thattank
of the canbottom
be inclined toor less).
(1 / 50
any angle absorbs the inclination
• The maximum possible depth of the water tank is 6m.
of the tank bottom (1/50 or less). Opening
The maximum possible depth of ■ Opening
the water tank is 6m.

Guide bar
Guide bar

Skid base
(no anchor bolts necessary)
Skid base
(no anchor bolt necessary) Water flow

Water flow

The upper part of the tank is fixed.

Fixed at the upper part of the tank.

Bottom surface of a tank (Photo for reference)

■ Bottom surface of a tank (Photo for reference)

• SELECTION SHEET of Submersible

Mixer (Example)
SELECTION SHEET of Submersible Mixer (Example)

A skid base is used to stabilize the tank bottom.

A skid base is used to stabilize at the tank bottom.

Standard
StandardSpecifications
Specifications
Rated output
MotorNo. of poles Propeller Code
Propeller code Flow Thrust
Reaction Weight
Model
Model Volume
(m 3
/ min) Force
(N)
Weight
(Kg)
(kW)(kW)
Output Pole (P) 50Hz
50Hz 60Hz
60Hz (m3/min) (N) (kg)
2513 2523 7.4 300
SME15JAD
2512 2522 6.5 230 52
SM15JAD
SME15JBD
1.5 6 2511 2521 5.6 175
SM15JBD
SME15AD 3012 3022 10.5 430
54
SME15BD
SM15AD 3011 3021 9.8 380
SM15BD 3513 3523 15.0 650
SME28AD 2.8 8 3512 3522 14.0 570 75
SME28BD
SM28AD 3511 3521 13.0 490
Note) Propeller code marked with  cannot be used in the liquid that contains a large amount of foreign objects or has a large
SM28BD
specific gravity (1.03 or higher).

Note) Propeller Code marked with cannot be used for the application which water contains much of debris and high specific gravity (more than 1.03).

7
 High Speed Submersible Mixer SM/SME Series

Special Installation Methods

Special Installation Examples of a Mixer Facing Upwards or Downwards

A special mount and two guide pipes allow a mixer to be installed facing upwards or downwards. The mixer thus installed can be
used to circulate and mix sewage water in a contact aeration tank filled with contact materials or an anaerobic filter bed tank in a
small-sized community sewage treatment facility.

Example of Example of
a mixer facing a mixer facing
upwards downwards

Contact Contact
Contact Contact materials materials
materials materials

Facing Downwards (with a Guiding Cylinder)

Installation of a submersible mixer near the bottom of a deep tank with the mixer facing
Installation image
downwards may result in the generation of scum on the liquid surface, depending on the
quality of the liquid.
If the generation of scum is expected, a submersible mixer can be installed near the liquid
surface along with a guiding cylinder. This ensures efficient mixing and prevents the
generation of scum at the same time.
Submersible
mixer

Water flow image

Without a guiding cylinder With a guiding cylinder

Guiding
cylinder
Cross-sectional view of a tank at the center Cross-sectional view of a tank at the center

Mixer (facing downwards)

Mixer (facing downwards)

A lower flow rate near Top view at 0.1 m Top view at 0.1 m The suction flow Top view at 0.1 m Top view at 0.1 m
from the tank bottom from the water surface from the tank bottom from the water surface
the water surface is generated near the
likely to result in the water surface (at the
accumulation of scum. center) can suck out
generated scum
efficiently.

8
 SM/SME series

Flow Stabilizer for Low Water Level (Option)

Problems at Low Water Level Effect of a Flow Stabilizer

When submersible mixer
A flow stabilizer precludes sucking of swirl generated
Whirlpool
generated Noise is operates at the lower at low water levels. Installation of a flow stabilizer
and air is generated water level, for example allows operation of the mixer with a lower water level
taken in. in a shallow equalization than usual.
WL tank, anaerobic mixing is
disabled as mixer takes Flow stabilizer
When installing
air due to whirlpool a flow stabilizer
generates on the water
surface. This may cause
breakdown of mixer.
Therefore, in case of low
water level operation, by
installing flow stabilizer
to mixer, operable water
level can be lowered.
Vibration is generated,
causing breakdown.

Operational Min. Water Level Model Flow stabilizer H (mm) A (mm)

Without 1,100 700
SM250
With 500 100
WL
Without 1,100 700
SM400
With 500 100
Without 1,100 700
SM750 / SME750
With 500 100
Flow stabilizer Without 1,100 700
SME15JA • JB
With 500 100
A

Without 1,300 700

SME15A • B
With 900 300
Without 1,100 700
SME22JA • JB
With 500 100
H

Without 1,500 900

SME28A • B
With 900 300
Without 1,700 1,100
SME40A • B
With 1,000 400
Without 1,700 800
SM50A • B
With 1,200 300
Without 1,900 1,000
SM75A • B
With 1,200 300

Actual Measurement of Thrust at the Factory

Thrust Measurement System
ShinMaywa has a thrust measurement system specific for
submersible mixers installed at our Ono factory.
High quality can be
achieved by accurately
measuring the thrust
during submersible
operation.

9
 High Speed Submersible Mixer SM/SME Series

Standard Specifications
50Hz Specifications
Rated Rated Simultaneous Power for
No.of Propeller Propeller dia. Flow Thrust Weight
Model output current rotation speed mixing clear
poles code (mm) (m3 / min) (N) (kg)
(kW) (A) (min-1) water (kW)

SM250 0.25 4 2.3 1,500 — 150 0.21 1.8 53 20

SM400 0.4 4 2.8 1,500 — 180 0.33 2.7 80 23

SM750 0.75 4 4.4 1,500 — 180 0.55 3.5 140 25

SME750 0.75 4 4.1 1,500 — 180 (0.66)*1 3.5 140 28

2513 1.4 7.4 300

SME15JA JB • 2512 254 1.0 6.5 230 52

1.5 6 9.3 1,000 2511 0.8 5.6 175

3012 1.6 10.5 430

SME15A • B 300 54
3011 1.4 9.8 380

2212 1.8 6.4 300

SME22JA • JB 2.2 4 10.4 1,500 220 52
2211 1.1 5.1 190

3513 2.1 15.0 650

SME28A • B 2.8 15.8 3512 1.9 14.0 570 75

3511 1.6 13.0 490

8 750 350
3515 3.2 17.0 850

SME40A • B 4 23.4 3514 2.6 16.0 750 93

3513 2.2 15.0 650

512 5.5 35.5 1,620

513 4.9 34.2 1,500

SM50A • B 5 25.8 145
514 4.4 30.6 1,200

10 600 515 525 3.4 26.5 900

510 8.2 43.0 2,370

SM75A • B 7.5 39.6 511 7.4 40.0 2,050 160

512 6.4 35.5 1,620

SM110A 8.8 4 38 311 503 780 7.2 63.4 2,600 330

13.5 59 352 502 10.4 71.5 3,300

SM150A 4 780 330
15 64 367 501 11.8 74.7 3,600
*1: Value in ( ) shows consumption power for mixing clear water.
*2: Propeller code marked with  cannot be used in the liquid that contains a large amount of foreign objects or has a large specific gravity (1.03 or higher).
•For mixers with motor rated output not specified in these tables, please contact us.

10
 SM/SME series

60Hz Specifications
Rated Rated Simultaneous Power for
No.of Propeller Propeller dia. Flow Thrust Weight
Model output current rotation speed mixing clear
poles code (mm) (m3 / min) (N) (kg)
(kW) (A) (min-1) water (kW)

SM250 0.25 4 2.0 1,800 — 136 0.22 1.5 44 20

SM400 0.4 4 2.5 1,800 — 150 0.32 2.0 60 23

SM750 0.75 4 4.2 1,800 — 180 0.6 3.4 125 25

SME750 0.75 4 3.6 1,800 — 180 (0.7)*1 3.4 125 28

2523 1.3 7.4 300

SME15JA JB • 2522 254 1.0 6.5 230 52

1.5 6 7.6 1,200 2521 0.7 5.6 175

3022 1.7 10.5 430

SME15A • B 300 54
3021 1.5 9.8 380

SME22JA • JB 2.2 4 9.3 1,800 2221 220 1.8 5.8 250 52

3523 2.3 15.0 650

SME28A B • 2.8 14.5 3522 2.0 14.0 570 75

3521 1.7 13.0 490

8 900 350
3525 3.0 17.0 850

SME40A • B 4 20.9 3524 2.6 16.0 750 93

3523 2.3 15.0 650

512 5.5 35.5 1,620

513 4.9 34.2 1,500

SM50A • B 5 29.9 145
514 4.4 30.6 1,200

12 600 515 525 3.4 26.5 900

510 8.2 43.0 2,370

SM75A • B 7.5 44.6 511 7.3 40.0 2,050 160

512 6.4 35.5 1,620

SM110A 10.5 4 43 328 602 780 8.4 66.4 2,850 330

SM150A 15 4 62 373 601 780 12.4 75.7 3,700 330

*1: Value in ( ) shows consumption power for mixing clear water.
*2: Propeller code marked with  cannot be used in the liquid that contains a large amount of foreign objects or has a large specific gravity (1.03 or higher).
•For mixers with motor rated output not specified in these tables, please contact us.

11
 High Speed Submersible Mixer SM/SME Series

Dimensions (Unit : mm)

SM250 • SM400 • SM750 • SME750 SME15JA • SME15A • SME22JA • SME28A • SME40A •

SM50A • SM75A
Rotation
SME15JB • SME15B • SME22JB • SME28B • SME40B •
SM50B • SM75B
direction
25

Ø 218
55

50 200(224)

G
F
E
Ø194

241

Rotation
180

direction

457(464)

ØC
D

491(498)

( ) : SME750

SM110A • SM150A
B

Dimensions
Model
A B C D E F G
SME15JA • JB 531 588 360 234
SME15A • B 557 614 440 247
308
490

SME22JA • JB 531 588 360 234 50 19

47

SME28A • B 641 698 278

510
SME40A • B 701 758 308
SM50 746 836 328
705 280 100 43
490

SM75 798 888 350

Opening
100
469
Rotation
direction

Slot
Dimensions
w
Ø980
620

985 L
10

1,086

Model W L
SM250,SM400,SM750,SME750 400 700
SME15JA • JB,SME22JA • JB 500
800
SME15A • B
SME28A B • 600 900
SME40A • B 1,000
SME50A • B,SME75A • B 800 1,200
SM110A,SM150A 1,100 1,400

Cable Specifications
Model Type Section area No. of cores Application Length Outer diameter Model Type Section area No. of cores Application Length Outer diameter
(mm2) (m) (mm) (mm2) (m) (mm)
SM250 PVC insulated 5.5
SM400 1.25 4 Power 10 Ø11.5 Ø20
SM750
PVC sheathed SM50A • B 2.0
cable (2.0)
(Ø22)
SME750
EPR insulated
SME15JA • JB 1.25 Ø15 8.0 Power Ø22
SME15A • B CPC sheathed 4
1.25
(Ø17) SM75A • B 2.0 Thermal (Ø24.5)
SME22JA • JB EPR insulated (1.25) cable (2.0) 2 10
(Leakage
CPC sheathed 4 Power with fabric (2)
2.0 Ø16 detector)
SME28A • B cable Thermal 10 reinforcement 14
2.0 2 SM110A
with fabric (Leakage (Ø18) 2.0 Ø29
(2.0) (2) SM150A
reinforcement detector) (2.0)
3.5 Ø18
SME40A • B 2.0
(Ø20)
(2.0) ( ) shows the optional specification with [leakage detector].

12
 SM/SME series

Standard Specifications

SM250 • SM400 • SM750 • SME750

1
6 6 9 7
■ Material
No. Name Material No. Name Material
4
PVC insulated PVC sheathed
8 M
echanical seal
1 Cable Gray iron casting (FC200)
cable bracket
11 2 Rotor – 9 Oil housing Gray iron casting (FC200)
3 Stator – 10 Motor cover Gray iron casting (FC200)
Spheroidal graphite iron casting
4 Shaft 420J2 stainless steel 11 Propeller (FCD500)
5 Stator housing Gray iron casting (FC200) 12 Draft ring 304 stainless steel
6 Bearing – 13 Sliding bracket 304 stainless steel
12
7 Mechanical seal –
13 10 2 3 5 8

■ Material
SM50A • SM75A (Cast iron specification) No. Name Material No. Name Material

SM50B • SM75B (Stainless steel specification) 1 Cable

EPR insulated PCP sheathed cable 11 Motor cover
with fabric reinforcement
Gray iron casting (FC200)
<316 stainless steel casting>
20 2 Rotor – 12 Propeller 316L stainless steel
1 6 15 6 10
7 3 Stator – 13 Draft ring 304L stainless steel
316 stainless steel
4 Shaft 14 Sliding bracket 304 stainless steel
(wet portion only)
12 5 Stator housing 316L stainless steel 15 Hanger plate 304 stainless steel
6 Bearing – 16 Sliding plate Polyethylene (PE)
4
7 Mechanical seal – 17 Propeller cap Chloroprene rubber (CR)
8 M
echanical seal Acrylonitrile butadiene rubber
Gray iron casting (FC200) 18 Shield ring
bracket (NBR)
16 Acrylonitrile butadiene rubber
9 Bearing bracket Gray iron casting (FC200) 19 Oil seal
17 (NBR)
10 Oil housing Gray iron casting (FC200) 20 Support coil 304 stainless steel
9 <316 stainless steel casting>
The material within the bracket < >is for stainless steel specification models.
13
14

11 2 19
3 5 18
8

SME15JA • SME15A • SME22JA • SME28A • SME40A (Cast iron specification)

SME15JB • SME15B • SME22JB • SME28B • SME40B (Stainless steel specification)
■ Material
No. Name Material No. Name Material
EPR insulated PCP sheathed cable Gray iron casting (FC250)
1 Cable with fabric reinforcement 11 Motor cover <316 stainless steel casting>
2 Rotor – 12 Propeller 316 stainless steel casting
3 Stator – 13 Draft ring 304 stainless steel
316 stainless steel(wet portion 14 Sliding bracket
4 Shaft 304 stainless steel
only)
Gray iron casting (FC250)
5 Stator housing <316 stainless steel casting> 15 Hanger plate 304 stainless steel

6 Bearing – 16 Sliding plate Polyethylene (PE)

7 Mechanical seal – 17 Propeller cap Chloroprene rubber (CR)
8 Bearing bracket Gray iron casting (FC250) 18 Shield ring Acrylonitrile butadiene rubber (NBR)
9 Bearing retainer Gray iron casting (FC250) 19 Oil seal Acrylonitrile butadiene rubber (NBR)
Gray iron casting (FC250)
10 Oil housing <316 stainless steel casting> 20 Support coil 304 stainless steel

The material within the bracket < >is for stainless steel specification models.

■ Material
SM110A • SM150A No. Name Material No. Name Material
EPR insulated PCP sheathed cable
19 1 10 4 11 12 13 5 1 Cable
with fabric reinforcement
11 Gear housing Gray iron casting (FC200)

2 Rotor – 12 Mechanical seal bracket Gray iron casting (FC200)

9 3 Stator – 13 Oil housing Gray iron casting (FC200)
4 Motor shaft Carbon steel 14 Locking element –
5 Propeller shaft 316 stainless steel 15 Sliding plate Polyethylene (PE)
15 14 6 Propeller 316 stainless steel casting 16 Propeller cap 316 stainless steel casting
7 Draft ring 304L stainless steel 17 Shield ring Chloroprene rubber (CR)
16 8 Sliding bracket 304 stainless steel 18 Oil seal Acrylonitrile butadiene rubber (NBR)
8
9 Motor cover Gray iron casting (FC200) 19 Support coil 304 stainless steel
10 Stator housing Gray iron casting (FC200) 20 Mechanical seal –
6
The material within the bracket < >is for stainless steel specification models.
7
3 2 17 20 18
13
 High Speed Submersible Mixer SM/SME Series

Simple Selection Chart

Water depth (m) For Pump Well
SM5
0A-5
SME 14
40A-
3515
SME
40A-
SME 3514
28A-
3513
SME2
8A-35
12
SME2
8A-35
11
SME15
A-301
1
SME15 SME15J
JA-251 A-2513
2
SME15JA-2511

Area (m2)

Water depth (m)

Remarks) Length/Width ratio of plain
SM5 surface of tank shall be less than 2:1
0A-5
SME 14 as described below.
40A- L ≤ 2W
3525
SME
40A-
3524
SME
28A-
3523

W
SME2
8A-3
522
SME2
8A-35 Liquid condition
21
SME1
5A-30 Specific gravity 1.01
SME15 21
SME1 JA-252 Density 0.1%
5JA-2 3
522
Model selection is just for reference so
SME15JA-2521 that correct model shall be determined by
formal calculation chart.

Area (m2)

Water depth (m) For Sludge Storage Tank

SM75B-511
SME40B-3514

SME28B-3513 SM50B-513
SME28B-3512 SME SM75B-512
40B SM50B-514
-351
5
SME15JB-2513

SM SME28B-3511
E15
SM JB-
E15 251
JB- 2
251
1

Area (m2)

Water depth (m) SM75B-512

Remarks) Length/Width ratio of plain
surface of tank shall be less than 2:1
as described below.
L ≤ 2W
SM75B-511
SME40B-3524

SME28B-3523
W

SM50B-513
SME
SME28B-3522 40B SM50B-514
-352
5 Liquid condition
SME15JB-2523
Specific gravity 1.05
SM Density Less than 2%
E15 SME
JB- 28B-
SM 252 3521 Model selection is just for reference so
E15 2 that correct model shall be determined by
JB-
252 formal calculation chart.
1

Area (m2)
14
 SM/SME series

 For the SM-W, SME-W, SM-F and SME-R, please contact us separately.

Water depth (m) For Equalization Tank

SM5
0A-5
SME 14
40A-
SME 3515
40A-
SME 3514
SME 28A-
28A- 3513
3512
SME2
8A-3
511
SME1
SME 5A-30
15JA 11
SME SME -251
15JA 3
15JA -251
SM7 -251 2
50/S 1
ME7
50
SM4
00

Area (m2)
SM250
Water depth (m)
Remarks) Length/Width ratio of plain
SM5 surface of tank shall be less than 2:1
SME 0A-5 as described below.
40A- 14
SME 3525 L ≤ 2W
40A-
3524
SME
28A-
3523
SME2

W
8A-3
SME2 522
8A-3
521
SME1 Liquid condition
SME 5A-30
15JA 21 Specific gravity 1.01
-252
SME1 3
5JA-2 Density 0.1%
SM400 SME1 522
5JA-2
SM750 521 Model selection is just for reference so
/SME7 that correct model shall be determined
50 by formal calculation chart.
SM250
Area (m2)

Water depth (m) For Reaction Tank/Denitrification Tank

SM5
0A-5
13

SME SM50A-514
40A
SME -351
40A- 5
SME 3514
28A-
SME 3513
28A-
3512
SME15JA-2511
SME28A-3511
SME SME1
15JA 5JA-2
-251 513
SM7 2
50/S
SM4 ME7
00 50

Area (m2)

Water depth (m)

Remarks) Length/Width ratio of plain
SM5 surface of tank shall be less than 2:1
0A-5
13 as described below.
L ≤ 2W
SM50A-514
SME
SME 40A-
40A 3525
SME -352
W

28A- 4
SME 3523
28A-
3522
Liquid condition
SME28A-3521 Specific gravity 1.05
SME1
5JA-2 Density 0.5%
SME1 523
5JA-2
SM7 SME15 522 Model selection is just for reference so
50/S JA-252 that correct model shall be determined
ME7 1
50 by formal calculation chart.
SM400
Area (m2)
15
 Adopting tungsten carbide spraying propeller
SM-W/SME-W Series

Coating the 316 stainless steel casting propeller by spraying the tungsten carbide.
While having excellent corrosion resistance of stainless steel, it greatly enhances abrasion resistance.

Tungsten carbide
spraying

Propeller wear is less than half that of

stainless steel casting.
"Tungsten carbide spraying" of the propeller's vane part is
adopted. The Vickers hardness of tungsten carbide is more
than 5 times that of stainless steel, and wear resistance is
greatly improved.

Applications

Livestock manure treatment

Uniform agitation of livestock manure
For use in other applications (such as factory drainage), please contact us.

Comparison of propeller wear

Operation with No. 5 silica sand 8% mixture

Model SM SME-W
Accumulated operation time 46 hours 90 hours
Propeller diameter change(mm) 254 ➝ 200 254 ➝ 254
Propeller weight change -9％ -5％
Change of the thrust -23％ -15％
Material of propeller 316 stainless steel 316 stainless steel casting with tungsten carbide splaying

• What is tungsten carbide?

Tungsten carbide has a Vickers hardness of at least 5 Hardness comparison(Vickers hardness)
times that of stainless steel and is a stable material. It 1,200
resists corrosion and exhibits stable characteristics
1,000
even under harsh environments.
Hv1100 ~ 1300
800

600
Less than Hv185
400

200

0
316 stainless steel casting Tungsten carbide

16
 Standard Specifications
50Hz Specifications
SM-W/SME-W 60 Hz Specifications
series

Power
Rated No. of Rated Rated Propeller Propeller consumption Power
Rated No. of Rated Rated Propeller Propeller consumption
Model Flow Thrust Weight Flow Thrust Weight
output poles voltage current code dia. at clear water (m3 / min) (N) (kg)
Model output poles voltage current code dia. at clear water (m3 / min) (N) (kg)
(kW) (V) (A) (mm) (kW) (V) (A) (mm)
mixing(kW) mixing(kW)
0.9 7.8 W2511 0.8 5.6 175 1.1 6.3 W2521 0.7 5.6 175
SME15JAW • JBW 6 254 52 SME15JAW • JBW 6 254 52
1.5 9.3 W2513 1.4 7.4 300 1.5 7.6 W2523 1.3 7.4 300

SME22JAW • JBW 2.2 4 10.4 W2212 220 1.8 6.4 300 52 SME22JAW • JBW 2.2 4 9.3 W2221 220 1.8 5.8 250 52
3-phase 3-phase
SME28AW • BW 2.8 8 200 15.8 W3511 1.6 13.0 490 75 SME28AW • BW 2.8 8 200 14.5 W3521 1.7 13.0 490 75
350 350
SME40AW • BW 4.0 8 23.4 W3513 2.2 15.0 650 93 SME40AW • BW 4.0 8 20.9 W3523 2.3 15.0 650 93
SM50AW • BW 5.0 10 25.8 W5212 3.8 30.6 1,200 145 SM50AW • BW 5.0 12 29.9 W5222 3.8 30.6 1,200 145
525 525
SM75AW • BW 7.5 10 39.6 W5214 5.2 35.5 1,620 160 SM75AW • BW 7.5 12 44.6 W5224 5.2 35.5 1,620 160

Dimensions (Unit: mm)

Operation Min. Level (Unit: mm)
G

F
Flow stabilizer
E
Rotating
direction WL

A
(B)
ØC
D

H
A
B

Model Flow H A B
stabilizer
Dimensions SME15JAW • Without 1,100 700 180
Model JBW
A B C D E F G With 500 100 185
SME15JAW JBW • Without 1,100 700 180
531 588 360 234 SM22JAW • JBW
SME22JAW • JBW With 500 100 185
308 50 19
SME28AW • BW 641 698 278 Without 1,500 900 220
510 SME28AW • BW
SME40AW • BW 701 758 308 With 900 300 226
SM50AW • BW 746 836 328 Without 1,700 1,100 255
705 280 100 43 SME40AW • BW
SM75AW BW • 798 888 350 With 1,000 400 261
Without 1,700 800 353
SM50AW • BW
With 1,200 300 361
Without 1,900 1,000 353
SM75AW • BW
With 1,200 300 361

Open Slot Dimensions (Unit: mm)

Model W L
SME15JAW • JBW
500 800
SME22JAW • JBW
w

SME28AW • BW 900
600
SME40AW • BW 1,000
SM50AW • BW
800 1,200
SM75AW • BW
L

17
 Aeration Mixer

SME-R Series
Suppresses odor generation
at a low water level

The installation of an air intake pipe facilitates

the air supply. Self-aspirating
type
Applications
Intake pipe
Mixing of the pump station for wastewater collection system
Load reduction in post-process (sewage treatment plant)
and prevention of hydrogen sulfide generation

Mixing of temporary wastewater storage tank for public and commercial facilities
Preventing sludge deposit and scum generation

Aeration nozzle

Special hardening
Propeller treatment
improves abrasion
resistance.
Water flow can
Draft ring be supplied more
efficiently.

Conceptual Chart
Features
Intake pipe
• No blower is required as self-aspirating type
• Supplying oxygen simultaneously with mixing Water surface
Submersible mixer is used as a base for supplying oxygen
and simultaneously mixing.
• Anaerobic mixing is also available
Throttling or stopping air also enables anaerobic mixing.
• Prevent clogging
Use of sweepback blade propeller prevents foreign object
clogging.

18
 SME-R series

Standard Specifications
Synchronous Air flow (Standard Min. / Max. Max. tank
Model Rated output Frequency Rated current rotation speed Propeller submergence depth) submergence depth dimensions Weight
(kW) (Hz) (A) (min-1) code 3
(W x L) (kg)
(m / h) for aspiration
50 1,500 13.8(0.3m) 6m×6m
SME750R 0.75 4.4 — 0.1m / 1.0m 30
60 1,800 17.4(0.3m) (36m2)

SME15JAR • 50 9.3 1,000 130 39.5(0.4m) 0.1m / 0.8m 7m×7m

1.5 55
JBR 60 8.0 1,200 131 44.3(0.4m) 0.1m / 1.0m (49m2)
 Submergence depth: Distance between water surface and top of draft ring of the mixer.

Performance Curve
50Hz 60Hz
50 50
45 45
40 40
35 35 SME15JAR JBR •

30 SME15JAR JBR •
30
Air flow

Air flow
m³/h

25 25
m³/h

20 20
15 15 SME750R
10 SME750R 10
5 5
0 0
0.2 0.4 0.6 0.8 1.0 1.2 0.2 0.4 0.6 0.8 1.0 1.2
Submergence depth (m) Submergence depth (m)
 Air flow is the value obtained by multiplying the flow area in the intake pipe by the representative flow velocity.

Dimensions (Unit: mm) Open Slot Dimensions (Unit: mm)

H

Submergence depth

G
25A JIS5K
F
Rotating
direction
(J)
D
ØC
E

A
B
Model L W
Dimensions
Model SME750R 700 400
A B C D E F G H J
SME750R 464 498 241 349 180 224 25 109 SME15JAR • JBR 800 500
50
SME15JAR • JBR 531 588 360 456 380 234 19 180

19
 Medium Speed Submersible Mixer

SMM Series
Energy consumption can be reduced to 1 / 2 to 1 / 3 from SM series
high speed submersible mixer, when using in the reaction tank.
Features
Energy saving High maintainability
Mixing of the reaction tank is realized with a slight power density of The maintenance cycle is twice as long as the SM series high speed
2 to 4 W / m3. submersible mixer. In addition, it can be easily pulled up with the
Energy consumption can be reduced to 1 / 2 to 1 / 3 compared to portable hanger pipe, reducing maintenance costs.
SM series high speed submersible mixers.

Smooth mixing of biological flocs Installation on the tank wall side

A smooth propeller shape and low blade tip speed provide gentle Unlike other mechanical mixing systems, there is no need for
mixing for biological flocs and so on. structures (installation structures or inspection walkways) at the
center of the tank, so the installation to the existing tank can be
reduced the construction period and cost.

Applications
Energy save mixing in denitrification tank and reaction tank.

Standard Specifications
Rated Rated current Simultaneous Propeller Minimum Power for
No. of Flow Thrust Weight
Model output (A) rotation speed Propeller code diameter width mixing clear water
poles (mm) (N) (kg)
(kW) 50Hz 60Hz (min-1) (mm) (mm) (kW)
SMM8 0.75 8 5.8 5.2 109 723 0.7 109 600
Approx. Approx.
SMM15 1.5 6 7.8 7.4 137 722 1,100 1.4 137 1,000 100
370
SMM22 2.2 4 9.9 9.4 156 721 2 156 1,300

Dimensions (Unit: mm) Sectional View

10
11
14
5
6
3
328(SMM8 • SMM15) id th 7
um w 4
335(SMM22) Minim 70) 2
(3
15 1
100
100
1,
Ø
600

Rotating
direction
9 8 13 12
171

Material
No. Name Material No. Name Material
.1
89

1 Propeller Glass fiber reinforced plastic (GRP) 9 Buffer material Ethylene propylene diene rubber (EPDM)
Ø

EPR insulated PCP sheathed cable

2 Shaft 316 stainless steel 10 Cable with fabric reinforcement

3 Stator — 11 Support coil 304 stainless steel

4 Rotor — 12 Oil seal Acrylonitrile butadiene rubber (NBR)
663(SMM8 • SMM15) 5 Stator housing Gray iron casting (FC200) 13 Shield ring Chloroprene rubber (CR)
684(SMM22) 6 Bearing — 14 Hanger bracket 304 stainless steel
803(SMM8 • SMM15) 7 Mechanical seal — 15 Sliding bracket 304 stainless steel
824(SMM22) 8 Gear Chromium molybdenum steel

20
 SMM series

Energy save mixing

(Compare in the 11m x 6m x 6m (water height) reaction tank)

• Compare with same number of SM • Compare with same power SM series • Compare with same number of SJL
series high speed submersible mixer high speed submersible mixers series submersible aerator
Rated output(kW) Rated output(kW) Rated output(kW)

5.0

70% 50% 3.7

reduced reduced 59%
3.0
reduced

1.5 1.5 1.5

SM50 SMM15 SM15 SMM15 SJL37 SMM15

(5.0kW) (1.5kW) (1.5kW) × 2 (1.5kW) (3.7kW) (1.5kW)

Flow velocity measurement at the bottom of reaction tank

(Tank capacity: 430m3 Power consumption: 630W)
Hanger pipe (portable)
Easily pull up the mixer
• Bottom velocity of 0.1 m / s achieved and carry it out from the tank.
with a power density of 1.5 W / m3
8.8m
Upper bracket

Guide bar
Flow velocity (m / s) Adjustable of the
angle in the left and
0.20 and over
8.3m

right direction. SMM medium speed mixer

0.15 - 0.20
0.10 - 0.15
0.05 - 0.10 Base
0.00 - 0.05

Form a swirling
flow around the
entire tank Distribution of biological floc particle size in reaction tank
SMM medium
speed mixer • The particle size distribution of the biological floc is equal to air diffuser system
Frequency(%) Frequency(%)

6 6

4 4

Flow acceleration 2 2
by the mixer

0 0
The strong water flow of the medium speed mixer gradually 1 10 100 1,000 1 10 100 1,000
accelerates the sewage in the tank to create a swirling flow, achieving Particle size (μm) Particle size (μm)

agitation of the reaction tank with a small power density. SMM medium speed submersible mixer Air diffuser system

21
 Low Speed Submersible Mixer

SML Series
Generate a huge water flow
using minimal energy.
Features
Strong water flow
Using CFD / CAE analysis, adopt the high-performance propeller that enables
both mixing performance and strength. In addition, a structure with a
sweepback angle will prevent foreign matters from tangling and provide
superb durability.

Safety design
Leakage water chamber is standard on all models to prevent water
penetration to the motor. In addition, a leakage detector (optional) prevents
insulation deterioration due to leakage water. In addition, adopt the cable with
fiber reinforcement, core wire seal shut the water penetrating into the motor.

High maintainability
Under a hanging up condition, oil change for mechanical seal and reduction
gear parts, and inspection of the immersion to the leakage water chamber are
possible.

Superb reliability
Employs double mechanical seal with silicon carbide (SiC) seal faces that is
proven for submersible pumps. Secured the reliability that can withstand the
long-time continuous operation required for the submersible mixer. In
addition, the propeller shaft is made of corrosion resistant 316 stainless
steel. It exhibits reliability in a wide range of environments.

Long service life

Adopt the multi-pole motor with slow rotating speed reduces the load on the
reduction gear, which realizes long service life.

Wider scope of application

The high-temperature resistant motor, which reduces temperature rise, is
employed to endure liquid temperature up to 40˚C.
Liquid contact part is fully made of stainless steel for applications in wider
environment such as seawater.

Specifications of Handling Liquid

Applications
Kind of liquid Various types of wastewater
• Generating circulating water flow for Oxidation Ditch (OD) tank Specific gravity 1.03 or less
• Generation or circulation of water flow for dam and lake / bog Viscosity 1,000mPa • s or less
Temperature 0°C - 40°C
Chlorine iron 1,000mg / ℓ or less
Sludge concentration 5% or less
Water depth 10m or less
pH 6-9
• Applicable ranges of specific gravity and viscosity differ depending on the model.
• Depending on the liquid type, it is possible to cope with those beyond the above range, please contact us.

Cable Specifications
Computational fluid dynamics of oxidation-ditch tank
Section Area No. of Length Outer dia.
Model Type Application
(mm2) cores (m) (mm)

2.0 4 Power
SML15
EPR 2.0 2 Control 10 Ø18
SML22 insulated Spare
PCP 2.0 2
sheathed
cable with
fiber 3.5 4 Power
SML37 reinforcement 2.0 2 Control 10 Ø20
Spare
2.0 2

22
 Standard Specifications
Model
Rated
output
No..of poles Rated current (A) Synchronous
rotation speed
Propeller Propeller dia. Minimum wodth
Power for mixing
clear water
SML
Flow Thrust
series
Weight
code (mm) (mm) (kW) (m3 / min) (N) (kg)
(kW) 50Hz 60Hz 50Hz 60Hz (min-1)
39 1020 1.5 70 900
38 1021 1.3 68 850
1,400 510
36 1022 1.2 66 800
35 1023 1.1 63 700
33 1120 1.4 85 1,000
32 1121 1,600 555 1.2 82 900
31 1122 1.1 79 800
31 1220 1.5 103 1,200
SML15 1.5 10 12 8.8 9.7 225
30 1221 1.3 99 1,100
1,800 605
28 1222 1.1 95 1,000
27 1223 1 91 900
27 1320 1.4 143 1,500
27 1321 2,200 750 1.4 140 1,400
25 1322 1.2 134 1,300
27 1420 1.5 180 1,800
2,500 850
25 1421 1.4 174 1,700
45 2020 2.2 80 1,200
43 2021 2 77 1,100
42 2022 1,400 510 1.8 75 1,050
40 2023 1.6 73 1,000
39 2024 1.5 70 900
39 2120 2.2 99 1,400
38 2121 2 96 1,300
1,600 555
36 2122 1.8 93 1,200
35 2123 1.6 90 1,100
35 2220 2.2 117 1,500
33 2221 1.9 111 1,400
1,800 605
SML22 2.2 10 12 13.5 14.7 32 2222 1.7 107 1,300 225
31 2223 1.5 103 1,200
32 2320 2.1 168 2,100
31 2321 1.9 162 1,900
30 2322 2,200 750 1.8 156 1,800
28 2323 1.6 149 1,600
28 2324 1.6 143 1,500
31 2420 2.1 201 2,300
30 2421 1.9 195 2,100
28 2422 2,500 850 1.7 189 2,000
28 2423 1.7 183 1,900
28 2424 1.7 180 1,800
50 3020 3.2 91 1,600
49 3021 3 89 1,500
47 3022 1,400 510 2.6 86 1,400
46 3023 2.3 82 1,300
45 3024 2.2 80 1,200
46 3120 3.5 116 1,900
45 3121 3.2 114 1,800
43 3122 2.9 109 1,700
1,600 555
41 3123 2.5 104 1,600
40 3124 2.3 102 1,500
38 3125 2 97 1,400
41 3220 3.5 137 2,100
40 3221 3.2 133 2,000
SML37 3.7 10 12 21.2 25.5 235
38 3222 2.8 128 1,800
1,800 605
37 3223 2.5 122 1,700
36 3224 2.4 120 1,600
34 3225 2 113 1,500
40 3320 3.6 210 3,200
38 3321 3.2 201 3,000
37 3322 2,200 750 2.9 192 2,700
36 3323 2.8 190 2,600
34 3324 2.4 179 2,300
38 3420 3.5 237 3,200
37 3421 3.2 229 3,000
2,500 850
36 3422 3.1 226 2,900
34 3423 2.7 216 2,700
•Propeller code marked with  cannot be used in the liquid that contains a large amount of foreign objects or has a large specific gravity (1.03 or higher).
•The flow is a calculated value and may change depending on the tank shape.

23
 Low Speed Submersible Mixer SML Series

Dimensions (Unit: mm)

Open Slot Dimensions

Rotating
direction
58
102

Width
1,020
(250)

500

1,600

Width Dimensions
Propeller dia. Minimum width Recommended width
(mm) (mm) (mm)
400

Propeller dia.
width 1,400 900 1,800
1,400~2,500 i n i mum 0) 1,600 950 2,000
M ~85
(510 1,800 1,000 2,200
100 600
2,200 1,100 2,600
2,500 1,200 2,900
 At the minimum width, the propeller must be positioned vertically during installation and
removal. As far as possible, examine your plan under the recommended width.

Sectional View

Material
No. Name Material No. Name Material
1 Propeller Glass fiber reinforced plastic (GRP) 8 Stator housing 316 stainless steel
2 Propeller boss 316 stainless steel casting 9 Motor cover Gray iron casting (FC200)
3 Propeller shaft 316 stainless steel 10 Guide 316 stainless steel
4 Mechanical seal — 11 Buffer material Ethylene propylene diene rubber (EPDM)
5 Mechanical seal bracket Gray iron casting (FC200) 12 Cable entry Gray iron casting (FC200)
6 Oil housing Gray iron casting (FC200) 13 Cable EPR insulated PCP sheathed cable with fabric reinforcement
7 Bearing housing Gray iron casting (FC200) 14 Motor shaft Carbon steel

24
 Propeller Selection Table (propeller code)
SM/SME series
Thrust Propeller outer diameter (m)
(N) 1.4 1.6 1.8 2.2 2.5
700 1023
800 1022 1122
850 1021
900 1020 / 2024 1021 1223
1,000 2023 1120 1222
1,100 2021 2123 1221
1,200 2020 / 3024 2121 1220 / 2223
1,300 3023 2122 2222 1322
1,400 3022 2120 / 3125 2221 1321
1,500 3021 3124 2220 / 3225 1320 / 2324
1,600 3020 3123 3224 2323
1,700 3122 3223 1421
1,800 3121 3222 2322 1420 / 2424
1,900 3120 2321 2423
2,000 3221 2422
2,100 3220 2320 2421
2,300 3224 2420
2,600 3323
2,700 3322 3423
2,900 3422
3,000 3321 3421
3,200 3320 3420
The numbers in the table, such as 1023 and 1022, indicate a propeller code.
• To select the size of submersible mixer, calculate necessary thrust for your application and select the size which has greater thrust than calculated one. The required thrust varies depending on the shape and size of
SML15 tank, and the water quality in each application, so there must have some know-how (experience and expertise) to make correct calculation of required thrust. Please contact to ShinMaywa for correct size selection.
Propeller code marked with  cannot be used in the liquid that contains a large amount of foreign object or large specific gravity (1.03 or higher).
SML15(clear water) / 22
SML22
SML22(clear water) / 37
SML37
SML37(clear water)

Installation Example

Anchor bolt
2-M16×250L

Cable

Cable support
Chain
Guide bar
(100mm pipe)

Anchor bolt
4-M16×250L

25
 Submersible Mixer Series

Various Cases

No Draft Ring
In order to improve the mixing effect of a submersible
mixer, a draft ring is provided on the outer perimeter of a
propeller. However, when used in a liquid with abundant
foreign objects, including screen residues, overload due to
trapping of foreign objects or entanglement to draft ring
mounting stay may impair the mixing efficiency. In such
an environment, a submersible mixer without a draft ring
is useful.
 This is not applicable to some specific propeller codes as removal of a draft
ring increases shaft power. For details, please contact us.

Anti-corrosion Treatment
During treatment of garbage landfill leachate, corrosion
problems may occur, even with a device made of 100%
stainless steel. In such cases, the application of an anti-
crevice corrosion sealant and mounting of a sacrificial
anode (Zinc board) further increase corrosion resistance.
In this example, epoxy resin is applied to an external
surface to reduce the consumption of the sacrificial anode.

Channels and Shallow Rivers

In order to improve water quality in a channel or shallow
river, creating a water flow in a certain direction using
submersible mixers is effective. At a point where water is
likely to stagnate, an appropriate number of submersible
mixers are installed in the relevant positions to create an
adequate water flow, thereby preventing water corrosion
by the mixing effect.

Shallow Pond in a Park

To improve the water quality of small and very shallow
water areas, like ornamental ponds in a park, a compact
submersible mixer that can be installed at a water depth of
50 cm or more is effective. These mixers are installed at
certain internal positions and in the same
orientation to generate a water flow.
By creating a state equivalent to
that of a river with constant water
flow, water corrosion and odor
generation can be prevented,
enhancing the park for users and
nearby residents.

26
 1
Supply
Record Energy savings achieved by replacing from the blower
The water level in the equalization tank was raised due to the Before replacing
Customer's increased amount of drainage water, which sometimes resulted in Product in use Blower
blower overload. At the same time, pH adjustment was also Rated output 15.0kW
problem performed in this tank, but the adjustment occasionally failed, which
Number of units 1
precluded the stable operation of the treatment facility.

Replacing to
We recommended to use submersible mixers instead Product to use Submersible mixer
Proposal
from of diffuser system, because its driving power is Rated output 1.5kW
ShinMaywa unaffected by changes in the water level and it can Number of units 2
significantly reduce the output.
Total output
Installed in the
vicinity of the
15.0kW3.0kW
existing air Cost reduction!
diffuser tube

Effect
Various problems have
been solved and energy
Existing air diffuser tube
savings have been achieved
at the same time.

2
Supply
Record Uniform mixing in a tank achieved with creative thinking

Mixing by air alone resulted in uneven water quality due to the

Customer's elongated shape of the sewage water tank. This unevenness resulted
problem in instability in the quantity of chemical agent added in the next
process, which adversely affected treatment quality.

Proposal We recommended that part of the wall between the

from two adjacent tanks be removed to change the shape ■Mixers to be used
ShinMaywa of the water tank into that a looped style, and the Model SM15JA
installation of submersible mixers to create a large Rated output 1.5 kW
circulating flow. Number of units 2
Purpose Uniform mixing in the tank
Wall to be removed

Effect
Water flow
This has almost eliminated changes in
the quantity of chemical agent added
in the next process, thereby stabilizing
Submersible mixer the water quality. Furthermore, this
reduces the quantity of the chemical
agent required.

27
 DIAGONAL FLOW PUMP / AXIAL FLOW PUMP FLOAT PUMP

SD / SA FP
It can be set up at minimal space within a short A floating scum pump to collect
period with very little installation restriction. suspended solids on water surface.
It is also a very economical pumping station as
water is suctioned from the lower part of the
discharge pipe and up through it for draining.

SUBMERSIBLE EJECTOR SUBMERSIBLE AERATOR

J / JA SJ
Aeration with low inititial and Both mixing and aeration are available.
running costs can be realized. SJ type has a high oxygen transfer
"J"-type is applicable for 1 - 6 m efficiency and easy maintenance due to
depth and from 20m3 - 300m3 direct drive motor system.
preliminary aeration tank. Strong downward flow provides
efficient mixing.

AIR BLOWER LIGHTWEIGHT SUBMERSIBLE PUMP(Engineering Plastic Type)

ARH-S / SE CR / CRS / CRC

ARH-SP The"NORUS"series that is made of
engineering
Helical rotor type air blower realized
plastic and stainless steel is the
reducing noise dramatically.
submersible pumps
that feature durability, lightweight
and excellent corrosion resistance.

PUMP-RELATED PRODUCTS SCREEN

LC MS FV BS • VS SB / S
Level regulator Mini switch Oval float Automatic bar screen Wedge wire screen

Specifications and dimensions are subject to change without notice.

ShinMaywa Industries, Ltd.

Sales & Marketing Dept., Fluid Div. 3-2-43, Shitte, Tsurumi-ku, Yokohama, 230-0003, Japan
Phone : +81-45-584-1322 Fax : +81-45-575-2286
E-mail : sales.eisui @shinmaywa.co.jp

ShinMaywa (America), Ltd. ShinMaywa (Asia) Pte. Ltd.

10737 Gateway West, Suite 240, 8 Burn Road, #14-10 Trivex,
El Paso, Texas 79935, U.S.A. Singapore 369977
Phone : +1-915-594-9862 Phone : +65-6224-0728
Fax : +1-915-594-9866 Fax : +65-6224-9678
E-mail : info@shinmaywaamerica.com E-mail : asia.ad@shinmaywa.com.sg

ShinMaywa (Shanghai) Trading Co., Ltd.

201107 Building 6, Youlejia City, Industrial Park, 333 Lane,
Zhujian Road Minhang, Shanghai, China
Phone : +86-21-5296-2966
Fax : +86-21-5296-2970
E-mail : shanghai@shinmaywa.co.jp
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http://www.shinmaywa.co.jp/pump/english/index.html 19. 6 Z-E113H Printed in Japan1.14