oxyflex -mt 235 ® membrane-disc-diffuser - Supratec
oxyflex -mt 235 ® membrane-disc-diffuser - Supratec
oxyflex -mt 235 ® membrane-disc-diffuser - Supratec
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O P E R A T I O N<br />
OXYFLEX -MT <strong>235</strong><br />
MEMBRANE-DISC-DIFFUSER<br />
FOR FINE BUBBLE AERATION OF LIQUIDS<br />
®<br />
<strong>Supratec</strong><br />
Gesellschaft für Umweltund<br />
Verfahrenstechnik mbH<br />
M A N U A L<br />
Function<br />
and<br />
Leakage check<br />
First run of<br />
<strong>diffuser</strong>s<br />
Visual bubble<br />
check<br />
Oxygentransferefficiency<br />
test<br />
Start up<br />
After installation of OXYFLEX ® -MT <strong>235</strong> <strong>membrane</strong> <strong>disc</strong> <strong>diffuser</strong>s a<br />
function- and leakage test has to be done.<br />
Therefore the tank shall be filled with clean water up to maximum 10 cm<br />
above <strong>diffuser</strong>s’ surface and the <strong>diffuser</strong>s shall be set in operation.<br />
(specific air flow: 5 Nm 3 /h per unit)<br />
Then function and installation can be checked and confirmed by report.<br />
After function and installation has been checked and confirmed<br />
OXYFLEX ® -MT <strong>235</strong> <strong>membrane</strong> <strong>disc</strong> <strong>diffuser</strong>s have to be operated at<br />
least another 60 hours continuously, at a specific air flow of minimum<br />
5 Nm 3 /h per unit.<br />
Water level shall be as quick as possible raised up to minimum 100 cm<br />
above <strong>diffuser</strong>s’ surface.<br />
IMPORTANT: ● Diffusers may not stand still<br />
●<br />
Specific air flow may not exceed 8 Nm 3 /h per unit<br />
The judgement of the visual impression of bubble distribution shall not<br />
take place before the above specified first run of <strong>diffuser</strong>s.<br />
To do the visual check, the <strong>diffuser</strong>s shall operate at maximum capacity<br />
and shall be turned down to the minimum.<br />
•<br />
Test of evenly aeration (visual bubble check) must take place when<br />
the water level is at least 60-100 cm above <strong>diffuser</strong>s surface and a<br />
specific air flow of at least 5 Nm 3 /h per unit.<br />
•<br />
Test of evenly aeration (visual bubble check) at minimum air flow can<br />
only take place if the water temperature is above 10°C.<br />
Before the stated oxygen transfer efficiency figures of OXYFLEX ® -MT<br />
<strong>235</strong> <strong>membrane</strong> <strong>disc</strong> <strong>diffuser</strong>s are proved with an the oxygen transfer<br />
efficiency test, the above mentioned steps have to be considered.<br />
The oxygen transfer efficiency test must be done accordingly to<br />
accepted rules (e.g.: ATV-M 209) in clean or waste water.<br />
Guaranty figures have to be controlled exactly. It is necessary to have a<br />
precisely air-flow measurement system.<br />
After successful oxygen transfer efficiency test the start up OXYFLEX ® -<br />
MT <strong>235</strong> <strong>membrane</strong> <strong>disc</strong> <strong>diffuser</strong>s may follow immediately. If there is a<br />
postponement of the start up, it has to be taken care, that the water level<br />
stays at least 100 cm above <strong>diffuser</strong>s surface to prevent OXYFLEX ® -MT<br />
<strong>235</strong> <strong>membrane</strong> <strong>disc</strong> <strong>diffuser</strong>s from sunlight and / or freezing.<br />
Stand: December 2009<br />
<strong>Supratec</strong> 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
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