OTT GROUP

Oxygen Transfer Technology

Efficiency By Design

MAGNUM®

Innovative design

TheOTTMAGNUM® membrane tubediffuser

has been the leading diffuser of choice for use in

the demanding German aeration market for more

than 10 years.

The OTT MAGNUM®support core was designed to combine

the best combination of important ratios: highest

strength to weight; the lowest installation time to active

membrane surface; lowest piping length to diffuser

length ratios and lowest buoyancy to weight – an

unrivaled combination. These factors yield an installed

cost that is competitive with, if not lower than, any

other system designed to efficient standards.

Constructional details such as the CLIP IN ® connection

and the membrane guide rib on the upper side of the

support core are a solid basis for operational reliability and durability.

Every diffuser is air flow and pressure tested at the factory to

ensure the highest degree of quality control and product uni-

formity. To the client, this guarantees an optimized, highly

reliable and efficient aeration process for many years to come.

MembranesFLEXSIL® or FLEXNORM®

membranes are optimallytailored to the type of waste-water and application.The highest quality standardsand extensive QA/QC checksensure continual high perfor-mance and reliability.

Fold-free membraneThe patented molded profile ofthe OTT MAGNUM® guaranteesthe membrane is fold-freewhenever process air isswitched off, especially inintermittent operations.This detail is the basis for ahigh degree of mechanicalintegrity and durability ofmembranes.

PerforationThe OTT perforation techniquedelivers an optimum bubblepattern. This method is but oneof many features that give OTTdiffusers unrivalled efficiency.The efficiency of OTT diffusershas been proven by the resultsof numerous independent per-formance tests. The perforationof the membrane can be gearedto plant –specific requirements– just talk to us.

Single-piece constructionThe MAGNUM® core is a single piece,injection molded membrane supporttube made of virgin, recyclable poly-propylene (PP).The structure and design make theMAGNUM® core a unique product.Environmental sustainability ofyour plant is enhanced by usingrecyclable, environmentally inertmaterials. Quality is maintained bycomputer controlled production.

Stainless steel clampsMembranes are retained onthe diffuser body by stainlesssteel clamps which provide auniform clamping pressurewithout wrinkling themembranes. Extra membranematerial is provided to foldover the clamps for personneland membrane protection.

The benefits at a glance

Technical data, installation video and installation instructions at

www.ott-group.com

+ effective lengths: 1000, 1500 und 2000 mm

+ high-quality membranes for any application

+ simple and fast installation: CLIP IN ®

+ suitable for square and circular air headers

+ single-piece diffuser tube made from environmentally-

friendly polypropylene

+ only one hole needed in the header-pipe

CLIP IN®

The patented CLIP IN® lockingbolt makes the MAGNUM® theeasiest and quickest diffuserto install.

Mounting socketMAGNUM® membrane tubediffusers are available withconnections to accommodatecommonly available squareand round pipe sizes.

Air channelInjection molding of the diffusermakes it possible to incorporatethe air channel on the undersideof the membrane support tube.The air channel evenly distribu-tes air between the support tubeand membrane.This yields a consistent bubblepattern even at low air flux rates,giving a clear edge over anycompetitor products.

Flooded tubeThe MAGNUM® diffuser core isopen at the ends and in the cen-ter. Thus, the diffuser’s buoyancyis minimized.

LengthsThe MAGNUM® is available ineffective membrane lengths of1,000, 1,500 and 2,000 mm.The overall diffuser length is200 mm more in each case.

OTT’s MAGNUM®-membrane tubediffusers –efficiency and quality

Waste water treatment plant with MAGNUM®2000FLEXSIL® membrane tube diffusers.

42

36

30

24

18

12

6

0

14

12

10

8

6

4

2

0

OTT membrane tube diffuserswith FLEXSIL® membrane

Techn.Univ.Darmstadt (EN 12255-15)ATC Barcelona (ASCE Standard)Emschergenossenschaft (EN12255-15)

$Ø

Performance data of variouscompeting productsSource: Technical University Darmstadt

2 4 6 8

4.5 8.9 13.4 17.8

airflow [m3N/(m3

BB·h)]

airflow [scfm/1,000 gal]

SOTE

[gO 2/

(m3 N

·mET

)]

SOTE

[%/m

]

+

Test results of different oxygen transfer measurements by independent institutes with full-f loor-coverage of the basins. We shall be pleased to send you detailed test reports on request.

presented by

OTT GroupFrankenring 21 · D 30855 LangenhagenPhone: + 49 (0) 511 78631 0Fax: + 49 (0) 511 78631 40info@ott-group.com

www.ott-group.com OTT GROUP Nik

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