oxyflex -mt 300 ® membrane-disc-diffuser - supratec.cc

BELÜFTUNGSTECHNIK
UMWELT- & VERFAHRENSTECHNIK
SERVICE & WARTUNG
G E N E R A L I N F O R M A T I O N
OXYFLEX
®
- MT 300
MEMBRANE-DISC-DIFFUSER
For fine bubble aeration of liquids
Supratec
von-Drais-Straße 7
D-55469 Simmern/Hunsrück
Fon: +49 (0) 67 61 9 65 09-00
Fax: +49 (0) 67 61 9 65 09-01
E-mail: info@supratec.cc
Internet: www.supratec.cc
GESELLSCHAFT FÜR UMWELT-
UND VERFAHRENSTECHNIK MBH

OXYFLEX®-MT
General
Information
Design
Membrane
Characteristics
Performance
Combination
Variations
Supratec Gesellschaft für Umwelt- und Verfahrenstechnik mbH produces modern
high efficient aeration systems, which are mainly used for oxygen transfer into
biological waste water treatment. These products can also be used for any kind of
transfer of gases into liquids
OXYFLEX ® is the brand of membrane diffusers (plate, tubes and discs) with a
plastic body.
The extra ordinary characteristics of OXYFLEX ® - MT membrane disc diffusers are
given by its shape and the materials used.
OXYFLEX ® - MT membrane disc diffusers is available in two diameters:
• OXYFLEX ® -MT 235 (free membrane area) 235 mm and
• OXYFLEX ® -MT 300 (free membrane area) 300 mm.
The body is a round plate, made of glass reinforced made of Polypropylene. The
membrane is fixed to this body with a plastic ring made as well of glass reinforced
made of Polypropylene.
Standard-membrane is made of EPDM.
Membranes made of Silicone are available.
The membranes have a special slot-arrangement. Size and arrangement of those
slots is optimized to reach maximum oxygen transfer efficiency.
OXYFLEX ® - MT membrane disc diffusers have low pressure loss.
Supratec
OXYFLEX ® - MT membrane disc diffusers produce fine bubbles of a medium
diameter < 2 mm.
OXYFLEX ® - MT membrane disc diffusers are highly resistant against soiling.
As, in difference to tube diffusers, the whole active diffusers surface is at the same
hydraulic level, the membranes are gazing evenly among the full range from
minimal to maximal air flow. So, lifetime and efficiency is optimized.
OXYFLEX ® - MT membrane disc diffusers can be operated intermittently.
Gesellschaft für Umweltund
Verfahrenstechnik mbH
OXYFLEX ® - MT membrane disc diffusers can be used for all geometric forms of
tanks, but they are extraordinarily good for small tanks and grit chambers or first
high loaded stages.
OXYFLEX ® - MT membrane disc diffusers are well established and are working to
the clients satisfaction world-wide.
OXYFLEX ® - MT membrane disc diffusers are compatible to PERMOX ® -T ceramic
disc diffusers.
OXYFLEX ® -MT membrane disc diffusers have a wide range, OXYFLEX ® -MT 235:
0 - 8 Nm³/h and OXYFLEX ® -MT 300: 0 - 10 Nm³/h.
Die design air flow shall be about OXYFLEX ® -MT 235: 4 ± 1,5 Nm³/h and
OXYFLEX ® -MT 300: 5 ± 2 Nm³/h.
OXYFLEX ® -MT membrane disc diffusers can reach specific oxygen transfer
efficiency up to 25 gO2/Nm³xmsub, if coverage and water depth is favourable.
For plants with partly intermittent operated tanks, OXYFLEX ® -MT membrane disc
diffusers can be combined with PERMOX ® - T ceramic disc diffusers. However,
different pressure losses have to be considered
OXYFLEX ® - MT membrane disc diffusers are also available as coarse bubble
diffusers
Stand: Dezember 2009
Supratec ®
von-Drais-Straße 7 • D-55469 Simmern • Fon: +49 (0 67 61) 9 65 09-00 • Fax: +49 (0 67 61) 9 65 09-01 • info@supratec.cc

®
D R A W I N G OXYFLEX MT 300
Body
OXYFLEX
Air-Socket
Nippel R 1"
Detail: Non Return Valve
Ring PP
Membrane
Membrane - Disc - Diffuser
®
OXYFLEX -MT 300 are fixed with male
threat (standard 1“) to a suitable female
threat of the distributor.
Materials:
Body: Polypropylene (PP-GF)
Ring: Polypropylene (PP-GF)
Gasket: EPDM
Membrane: Silicone
EPDM
Membrane area: 0,07 m²
Membrane Gasket
Threat
Supratec
Gesellschaft für Umweltund
Verfahrenstechnik mbH
Gasket
Stand: Dezember 2009
Supratec ®
von-Drais-Straße 7 • D-55469 Simmern • Fon: +49 (0 67 61) 9 65 09-00 • Fax: +49 (0 67 61) 9 65 09-01 • info@supratec.cc

C U R V E S P r e s s u r e - O x y g e n
OXYFLEX -MT 300
MEMBRANE-DISC-DIFFUSER
FOR FINE BUBBLE AERATION OF LIQUIDS
®
OXYFLEX -MT 300 membrane disc diffuser are high efficient diffusers, as they are mainly used for oxygen
supply of biological waste water treatment plants.
Beside procedural necessities important criterions to select the matching fine-bubble aeration-technology
are features of a product.
®
OXYFLEX -MT 300 membrane disc diffuser are designed at a specific air-flow of 5 Nm³/h per unit.
This is a good compromise between Invest -, overheads and range.
The following table is showing figures, which are represented from an oxygen-efficiency-test.
The values have been reached in a round-basin with water-depth of 3,85 m, submerge of diffusers of 3,60 m
and coverage of 9,7%.
Those values are not transferable on other installations, as the deviation even more than ± 25%.
®
SUPRATEC GmbH likes to produce a data-sheet for individual application-cases on inquiry.
� No guarantee-claims can be derived from the diagram! �
OCL,h [gO2/(Nm³ x m sub)]
30
25
20
15
10
®
specific O2-entrainment standard conditions and
pressure loss
®
OXYFLEX -MT 300
∆p OC
0 2 4
specific load [Nm/h]
6 8
Supratec
Gesellschaft für Umweltund
Verfahrenstechnik mbH
10
50
40
30
20
10
∆p [mbar]
Stand: Dezember 2009
Supratec ®
von-Drais-Straße 7 • D-55469 Simmern • Fon: +49 (0 67 61) 9 65 09-00 • Fax: +49 (0 67 61) 9 65 09-01 • info@supratec.cc

OXYFLEX
®
-MT 300
MEMBRANE-DISC-DIFFUSER
FOR FINE BUBBLE AERATION OF LIQUIDS
Description
OXYFLEX ® -MT 300 – membrane disc diffuser has a solid,
strengthen, horizontal body, made of glass-reinforced Polypropylene
and a slipped over membrane (e.g.: EPDM).
The uniform ring, made of glass-reinforced Polypropylene ensures the
proper location of the membrane.
The body has a connecting-threat (standard 1“-male), that will be fixed
into a Polypropylene clamp.
This clamp can be fastened by screws or wedges.
The inserted gasket of the clamp seals the system.
Measurements Diameter: 330 mm, Height: 30 mm
Storage
Preparation
Levelling
Installation
Free membrane area: Diameter 300 mm (0,07 m²)
Supratec
The diffusers shall be stored in their packing inside a dry and aerated
building. DIN 7716 has to be considered.
Before installation of OXYFLEX ® -MT 300 – membrane disc diffuser
it has to be checked that the piping system is clean.
Drilling chips, dirt etc. have to be removed, because those will cause
serious damage to the diffusers’ membranes as those will be
transported into the diffusers as soon as blowers are set into operation.
OXYFLEX ® -MT 300 – membrane disc diffuser will be
installed onto round pipes. The piping system has to be levelled to
maximum ± 10 mm.
Gesellschaft für Umweltund
Verfahrenstechnik mbH
I N S T A L L A T I O N M A N U A L
OXYFLEX ® -MT 300 – membrane disc diffuser are fixed to
round pipes made of stainless steel or plastic, with a minimum diameter
of 50 mm. On the upper side of those pipes, centered holes of diameter
∅14 mm must be foreseen.
The clamp will be installed in a way, that the hole of ∅14 mm and the
opening of the clamp are centric.
After the clamp is locked (by screws or wedges) the OXYFLEX ® -MT
300 membrane disc diffuser can be screwed in.
It is to be taken care of a horizontal seat of the diffusers. The O-Ring
sealing, made of EPDM must be clean and undamaged and has to sit
between diffuser and tube.
Stand: Dezember 2009
Supratec ®
von-Drais-Straße 7 • D-55469 Simmern • Fon: +49 (0 67 61) 9 65 09-00 • Fax: +49 (0 67 61) 9 65 09-01 • info@supratec.cc

OXYFLEX -MT 300
MEMBRANE-DISC-DIFFUSER
FOR FINE BUBBLE AERATION OF LIQUIDS
Function
and
Leakage check
First run of
diffusers
Visual bubble
check
Oxygentransferefficiency
test
Start up
®
After installation of OXYFLEX ® -MT 300 membrane disc diffusers a
function- and leakage test has to be done.
Therefore the tank shall be filled with clean water up to maximum 10 cm
above diffusers’ surface and the diffusers shall be set in operation.
(specific air flow: 6 Nm 3 /h per unit)
Then function and installation can be checked and confirmed by report.
After function and installation has been checked and confirmed
OXYFLEX ® -MT 300 membrane disc diffusers have to be operated at
least another 60 hours continuously, at a specific air flow of minimum 5
Nm 3 /h per unit.
Water level shall be as quick as possible raised up to minimum 100 cm
above diffusers’ surface.
IMPORTANT: ● Diffusers may not stand still
Supratec
Gesellschaft für Umweltund
Verfahrenstechnik mbH
O P E R A T I O N M A N U A L
● Specific air flow may not exceed 10 Nm 3 /h per unit
The judgement of the visual impression of bubble distribution shall not
take place before the above specified first run of diffusers.
To do the visual check, the diffusers shall operate at maximum capacity
and shall be turned down to the minimum.
• Test of evenly aeration (visual bubble check) must take place when
the water level is at least 60-100 cm above diffusers surface and a
specific air flow of at least 5 Nm 3 /h per unit.
• Test of evenly aeration (visual bubble check) at minimum air flow can
only take place if the water temperature is above 10°C.
Before the stated oxygen transfer efficiency figures of OXYFLEX ® -MT
300 membrane disc diffusers are proved with an the oxygen transfer
efficiency test, the above mentioned steps have to be considered.
The oxygen transfer efficiency test must be done accordingly to
accepted rules (e.g.: ATV-M 209) in clean or waste water.
Guaranty figures have to be controlled exactly. It is necessary to have a
precisely air-flow measurement system.
After successful oxygen transfer efficiency test the start up OXYFLEX ® -
MT 300 membrane disc diffusers may follow immediately. If there is a
postponement of the start up, it has to be taken care, that the water level
stays at least 100 cm above diffusers surface to prevent OXYFLEX ® -MT
300 membrane disc diffusers from sunlight and / or freezing.
Stand: Dezember 2009
Supratec ®
von-Drais-Straße 7 • D-55469 Simmern • Fon: +49 (0 67 61) 9 65 09-00 • Fax: +49 (0 67 61) 9 65 09-01 • info@supratec.cc

M A I N T E N A N C E M A N U A L
OXYFLEX -MT 300
MEMBRANE-DISC-DIFFUSER
FOR FINE BUBBLE AERATION OF LIQUIDS
Maintenance
Supervision
Warranty
Supratec ®
®
OXYFLEX ® -MT 300 membrane disc diffusers do not need a lot of
maintenance. Usually it is enough to have one run of 10 to 15 minutes
operation at maximum air-flow per day, where each single OXYFLEX ® -
MT 300 membrane disc diffuser shall operate at a specific air-flow of at
least 6 Nm 3 /h per unit.
To do so, it may help to shut down the system partially, by closing the
corresponding valves.
This also removes layers of sludge after longer time not having
operated the system or longer terms of low specific air flow.
At least once per year OXYFLEX ® -MT 300 membrane disc diffusers
shall be checked visually. Here especially shall be checked whether
there are layers of sludge or similar. If so, those layers shall be removed
carefully.
A separate maintenance-contract can be completed
Supratec
Gesellschaft für Umweltund
Verfahrenstechnik mbH
A Visual bubble check has to be done daily. The pressure loss of the
system has to be controlled and reported monthly.
Showy changes of the bubbles’ distribution and/or of the pressure-loss
are prompt to report at SUPRATEC. Especially at installations with
intermittent operation exists the risk, that activated sludge penetrates
the entire piping, by damaged OXYFLEX ® -MT 300 membrane disc
diffusers. Hereby, all OXYFLEX ® -MT 300 membrane disc diffusers are
affected in function and lifetime.
The maximum of SUPRATEC GmbH's warranty for Membrane disc
®
diffuser OXYFLEX MT is 24 month.
Longer warranty can be arranged only with conclusion of a maintenance
contract between the operating and SUPRATEC GmbH.
Damages and/or outer influences are specifically excluded from the
warranty promise.
The warranty ends if it known, that sewage is partially mainly full of
industrial origin and/or the sewage has damaging influence on membrane
diffusers and the SUPRATEC GmbH was not informed accordingly. In such
case, a confirmation of the warranty is to be ordered through the
SUPRATEC GmbH.
The correction of vaults in the warranty is to determine by approval. In
case of warranty starts a 2 year long warranty for the changed diffusers. Is
the first warranty longer running, it apply till it ends.
The general sales and warranty conditions of SUPRATEC GmbH are valid,
and can be appreciate at www.supratec.cc.
Stand: Dezember 2009
von-Drais-Straße 7 • D-55469 Simmern • Fon: +49 (0 67 61) 9 65 09-00 • Fax: +49 (0 67 61) 9 65 09-01 • info@supratec.cc

Here are shown Photos of Membrane-Disc-Diffuser
OXYFLEX MT in operation
Supratec
Gesellschaft für Umweltund
Verfahrenstechnik mbH
Supratec Von-Drais-Straße 7 • D-55469 Simmern • Fon: +49 (6761) 9 65 09-00 • Fax: 9 65 09-01 • info@supratec.cc • www.supratec.cc