OXYSTAR® Aerator

OXYSTAR Aerator
®
Efficient Aeration and Mixing
Air
Water
Biosolids
Description
Materials and Design
Fuchs OXYSTAR Aerators are used to introduce oxygen into
OXYSTAR Aerators are intelligently but simply designed and
lagoons, equalization tanks or activated sludge basins. In
very sturdy. They are manufactured from non-corrosive
addition to a fine-bubble deep aeration they also provide
materials. Standard material for the hollow shaft, the pro-
for circulation and thorough mixing of the wastewater in
peller and all small parts is stainless steel AISI 304 which
the basins.
is appropriate in most cases. If required, stainless steel AISI
316 Ti is available as well. The protective housing is made
OXYSTAR Aerators essentially consist of an air-cooled
of glass fibre reinforced plastics.
a.c.-motor in mounting position B 35, a coupling with
The drives are a.c.-motors supplied by well-established
air-intakes, a hollow shaft and a sophisticatedly designed
manufacturers in the European Community. They are highly
three-blade propeller.
efficient, adequately rated and equipped with permantly-
The hollow shaft rotates at motor speed inside a protec-
lubricated grooved ball bearings. The motor housings
tive housing which is flange-mounted to the drive motor.
are made of high-quality cast iron or aluminium with an
OXYSTAR Aerators are either installed on flotations or moun-
additional coat of protective paint.
ting brackets.
The hollow shaft is connected to the drive motor by means
of a special conical coupling which can easily be mounted
Method of Operation
and disassembled. This precision-turned component is
In operation OXYSTAR Aerators draw atmospheric air through
seamless steel tube with tight production tolerances is
the hollow shaft and discharge it into the water stream
used for the hollow shaft. Dynamical balancing of coupling
created by the rotating propeller.
and propeller in conjunction with the motor ensures
Due to high turbulence fine-bubble aeration is achieved
smooth operation.
and the oxygen transfer efficiency is excellent. The
The immersion section does not contain any seals or
protective housing prevents any spray.
bearings. Consequently, OXYSTAR Aerators are almost main­
produced on numerically-controlled machines. An extruded
tenance free.
OXYSTAR Aerator
®
air flow
air intake ports
Wide-Ranging Applications
Installation
OXYSTAR Aerators are outstanding units for effective aeration
All OXYSTAR Aerators can be handled easily thanks to their
and mixing not only of municipal and industrial wastewater
low weight. There is no need for buildings for blowers,
but also of ponds, lakes and rivers.
compressed air pipes, covers and adjustable weirs.
OXYSTAR Aerators are preferably in­stalled in wastewater
Due to easy installation, the operation of the treatment
lagoons. These are typically applied for municipal,
plant will not be interrupted and no basin has to be emptied
food processing as well as pulp and paper wastewater.
when an existing aeration needs to be retrofitted or upgraded.
Furthermore, OXYSTAR Aerators are ideal for activated sludge
In lagoons or equalization basins OXYSTAR Aerators are
basins and equali­zation tanks. Almost all shapes of basins
installed on sturdy flotations kept in position by mooring
can be equipped, such as oval oxidation ditches, concen-
cables.
tric basins (donuts) and circular tanks.
Flotations for OXYSTAR Aerators essentially consist of at least
two pontoons and a hot-dip galvanized framework. The
In addition, OXYSTAR Aerators are optimal for the upgrading,
pontoons are made of high-quality LDPE.
retrofitting or replacing of aeration devices no longer
In activated sludge basins OXYSTAR Aerators will mainly be
oper­ating efficiently (e.g. mammoth rotors, brushes, surface
fixed with mounting brackets to bridges or basin walls.
aerators, diffused air systems and inferior aspirator aerators).
OXYSTAR
Aerator
suspension frame
®
on flotation
suspension frame
water level
pontoon
supporting leg
pontoon
side wall
OXYSTAR
Aerator
side wall
coupling
at side wall
water level
mounting bracket
protective housing
hollow shaft
mounting bracket
®
Aerated Wastewater Lagoon System in North Africa (270,000 p.e.)
The OXYSTAR Aerator: Advantages
Technical Data
• Efficient oxygen transfer.
OXYSTAR Aerators are available with all IEC motor sizes from
•Self-cleaning propeller ensures permanent
2.2 kW to 22.0 kW. Standard motors are 230/400 V resp.
high performance.
400/690 V, 50 Hz, 3-phase. Other voltages and 60 Hz are
• High-efficiency mixing and circulation.
available. Motor speed is ≤ 1,500 rpm at 50 Hz resp.
• No spray water, calm water surface.
≤ 1,800 rpm at 60 Hz.
• Negligible noise level.
In comparison to other aspirator aerators OXYSTAR Aerators
•Easy handling and mounting due to low weight.
have a highly competitive performance in mixing, air flow
•High-quality flotations, trouble-free installation.
and oxygen transfer.
• Almost maintenance free.
OXYSTAR
Type
OS
OS
OS
OS
OS
OS
OS
OS
OS
3.0
4.0
5.5
7.5
10.0
15.0
20.0
25.0
30.0
Nominal Power
kW
hp
2.2
3.0
4.0
5.5
7.5
11.0
15.0
18.5
22.0
3.0
4.0
5.5
7.5
10.0
15.0
20.0
25.0
30.0
Nominal Current
A
Total Length
mm
Weight
kg
Immersion Depth
mm
Air Flow
4.8
6.5
8.2
11.4
14.8
21.0
28.0
35.0
41.0
1,520
1,580
1,580
1,730
1,730
2,170
2,170
2,220
2,220
37
44
53
57
82
102
114
135
151
500
500
500
600
600
800
800
800
800
65
85
115
130
155
190
230
280
350
m3/h
Data for standard motors 400 V/50 Hz. Other voltages, 60 Hz as well as larger units on request.
The data are subject to technical change.
Stocktal 2 • 56727 Mayen • Germany
Phone +49-2651-8004-0
Fax +49-2651-8004-135
[email protected]
www.fuchs-germany.com
09/2011
Fuchs Enprotec GmbH