Datenblatt Membranrohrbelüfter wm-arm englisch Rev. 2
Datenblatt Membranrohrbelüfter wm-arm englisch Rev. 2
Datenblatt Membranrohrbelüfter wm-arm englisch Rev. 2
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ENVICON Membrane Tube Diffuser<br />
Type EMR-ls<br />
Page 1 of 3<br />
<strong>Rev</strong>ision No.: 2<br />
ENVICON membrane diffusers are high-quality products. In the manufacture of ENVICON<br />
diffusers, special attention is devoted to the quality of the EPDM membrane because it is<br />
a decisive factor for both the life and the economics of aeration systems. Up-to-date technology<br />
ensures super-fine membrane slits. ENVICON membrane diffusers are characterized<br />
by their proven constant and high-quality workmanship. They are suited for intermittent<br />
aeration.<br />
In dependence of the type of waste water different membrane materials can be supplied<br />
(different types of Special-EPDM). The Special-EPDM membrane type EMR-ls was especially<br />
developed for municipal waste water and municipal waste water with a higher percentage<br />
of industrial waste water (more than 10%) and for higher water temperatures. The<br />
percentage of EPDM in the compound is higher, the concentration of softener is reduced.<br />
So the ageing process becomes better - the expected annual increase of pressure drop<br />
(because of the ageing of the membrane) is smaller and the life time becomes longer.<br />
ENVICON EMR-ls membrane tube diffusers are normally mounted to the aeration grid in<br />
pairs. The necessary fastening material for round and rectangular pipes is supplied by<br />
ENVICON. The air supplied through the aeration grid passes through special threaded<br />
nipples fastened with tie rods to the distribution chambers of the membrane tube diffusers,<br />
and gets beneath the membrane tube via air ducts. An air cushion is building up beneath<br />
the membrane. This causes the membrane perforation to open, and air will stream into the<br />
waste water in the form of bubbles.<br />
Standard Types<br />
EMR 9.5-ls: 1 set of diffusers with an effective aerator length of 2 x 475 mm<br />
EMR 10-ls: 1 set of diffusers with an effective aerator length of 2 x 500 mm<br />
EMR 15-ls: 1 set of diffusers with an effective aerator length of 2 x 750 mm<br />
EMR 20-ls: 1 set of diffusers with an effective aerator length of 2 x 1.000 mm<br />
am: 12.02.09<br />
von: Plitzko<br />
Erstellt Geprüft Freigegeben Dokument-Nr.<br />
am: 13.02.09<br />
von: Wojciechowski<br />
am: 13.02.09<br />
von: Plitzko<br />
Datasheet EMR–ls <strong>Rev</strong>. 2
.<br />
.<br />
ENVICON Membrane Tube Diffuser<br />
Type EMR-ls<br />
Page 2 of 3<br />
<strong>Rev</strong>ision No.: 2<br />
Fastening System<br />
B<br />
gasket o70/40<br />
gasket o 68/33<br />
>80<br />
hex.-screw<br />
DIN931-M8x150(130)<br />
Performance data<br />
self-confident nut<br />
DIN985 M8<br />
Measurements were taken under standard conditions according German ATV M209 (clean water,<br />
water depth = 4.0 m, average density of aerators 0.9 – 1.2 m dif. / m²)<br />
28<br />
6<br />
O 2<br />
-input [g O 2<br />
/ Nm³ /m imm.<br />
]<br />
24<br />
20<br />
16<br />
Type of membrane<br />
EMR-ls<br />
0.0 4.0 8.0 12.0<br />
specific air flow in Nm³ /hr /m diff.<br />
O 2<br />
-yield [kg O 2<br />
/ kWh]<br />
5<br />
4<br />
3<br />
Type of membrane<br />
EMR-ls<br />
0.0 4.0 8.0 12.0<br />
specific air flow in Nm³ /hr /m diff.<br />
70<br />
60<br />
pressure drop in mbar<br />
50<br />
40<br />
30<br />
0,0 2,0 4,0 6,0 8,0 10,0 12,0<br />
specific air flow in Nm³/h/mBel.<br />
am: 12.02.09<br />
von: Plitzko<br />
Erstellt Geprüft Freigegeben Dokument-Nr.<br />
am: 13.02.09<br />
von: Wojciechowski<br />
am: 13.02.09<br />
von: Plitzko<br />
Datasheet EMR–ls <strong>Rev</strong>. 2
ENVICON Membrane Tube Diffuser<br />
Type EMR-ls<br />
Page 3 of 3<br />
<strong>Rev</strong>ision No.: 2<br />
Recommended air passage<br />
Standard: 6 - 8 Nm³/ (hr⋅m dif. )<br />
Max.: 12 Nm³/ (hr⋅m dif. ) (for continuously running, for a few minutes up to 15 Nm³/(hr⋅m dif.. ))<br />
Min.: 2 Nm³/ (hr⋅m dif. )<br />
The following diagram shows the „...respective position of the diffuser tested in each case<br />
is compared with that of other makes of tubular diffuser ...“.<br />
(part from the independent test report of Emscher Wassertechnik GmbH 2002)<br />
am: 12.02.09<br />
von: Plitzko<br />
Erstellt Geprüft Freigegeben Dokument-Nr.<br />
am: 13.02.09<br />
von: Wojciechowski<br />
am: 13.02.09<br />
von: Plitzko<br />
Datasheet EMR–ls <strong>Rev</strong>. 2
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