Plate diffuser(MF650&1100)
MEMBRANE PLATE DIFFUSER
This type is manufactured in two sizes (650mm and 1100mm) .
This model decrease cost of piping and increase efficiency of aeration.
The OXYFLEX – MF1100 membrane plate diffuser consists of a flat, heavily ribbed and fibreglass-reinforced
polypropylene base plate. The diffuser membrane is secured to the base plate with a two-part frame made of fibreglass-reinforced polypropylene. The high-quality injection-moulded membranes are available in The OXYFLEX – MF1100 has an active flat membrane surface of 0.2 m²In contrast to the tube diffuser, the entire active surface of the plate diffuser is at a hydraulic level. Even for different specific air loads, the entire membrane surface always works evenly.The special design of the OXYFLEX – MF1100 ensures that there is only a small pressure loss, which increases very slightly over the service life of the equipment. As a result, apart from the service life, the efficiency is also significantly increased compared to other diffuser types.The OXYFLEX – MF1100 is characterised by the following superior features:
highly efficient oxygen transfer low and stable pressure loss special diffuser design that is adaptable to all conditions
easy cleaning of the membranes resulting in low-maintenance operation The OXYFLEX – MF1100 is a highly efficient aeration element, which is predominantly used for the oxygen supply of biological waste water treatment plants. Due to the availability of the diffuser membranes in both EPDM and TPU materials, the OXYFLEX – MF1100, which has a highly variable design, can also be flexibly used with regard to different water qualities and
customer requirements. Of course, the OXYFLEX – MF1100 can also be operated in intermittent mode.The membranes are perforated individually and specifically for each project in order to achieve the perfect oxygen transfer for all requirements. The OXYFLEX – MF1100 membrane plate diffuser is able to cover a very broad operating range of up to 20 /h for each diffuser ( 100 /h per m² of membrane surface). With the fine-bubble design,specific oxygen transfer rates in pure water of more than 30 g O /( x m ) can be achieved by an area-covering layout and appropriate water depths.Actual operating values show that this highly efficient diffuser system is able to achieve standard aeration efficiency (SAE), which are significantly above the current DWA-M 229-1 guidelines. For example, an oxygen yield of 5.8 kg O /kWh was demonstrated for a waste water treatment plant size of approx. 28,000 EW. These extremely good SAE are also due to the comparatively small pressure loss of the diffusers. As an option to fine-bubble aeration, the membrane can also be manufactured for a coarse-bubble version. The following diagram shows the example of a result of an oxygen transfer test. The values were measured in a round tank with a water depth of 5.0 m, a diffuser blow-in depth of 4.8 m and a coverage of 21%.
AIR-PULSING: mixing without a mixer
The option of the intermittent operating mode means that, in a combined tank with alternating nitrification and denitrification phases and for a sufficient coverage by OXYFLEX membrane plate diffusers, the use of a mixer may be
not necessary (“Air-Pulsing” process). Any sedimentation of the activated sludge during the denitrification phase is prevented by short-term aeration intervals. The required aeration intervals are individually adapted to the respective plant with regard to its specific conditions such as the sludge index of the waste water. The aeration time is up to 20 seconds and the process is repeated approximately every 10 to 20 minutes depending on the plant type.
Oxyflex MF 1100 overview table
| Diffuser design | Premium | Max Efficient | High Efficient | Efficient | High Airflow | Max Airflow |
| Functional check and leakage check |
4 |
6 | 10 | 12 | 20 |
20 |
| Diffuser run-in |
4 |
6 | 10 | 12 | 20 |
20 |
| Bobble image |
0.5-4 |
0.5-6 | 1-10 | 2-12 | 3-20 |
5-20 |
| Min specific load |
0.5 |
0.5 | 1 | 2 | 3 |
5 |
| Nom. Operation range |
1-3 |
2-4 | 4-8 | 5-11 | 5-14 |
5-18 |
| Max continuous specific load |
3.5 |
5 | 9 | 12 | 16 |
20 |
| Max short-term specific load (maintenance) |
4.5 |
7 | 10 | 14 | 20 |
25 |
Oxyflex MF 650 overview table
| Diffuser design |
Max Efficient |
High Efficient |
Efficient |
| Functional check and leakage check |
4 |
8 |
12 |
| Diffuser run-in |
4 |
8 |
12 |
| Bobble image |
4 |
8 |
12 |
| Min specific load |
0.5 |
1 |
2 |
| Nom. Operation range |
1-4 |
2-6 |
3-8 |
| Max continuous specific load |
5 |
8 |
12 |
| Max short-term specific load (maintenance) |
6 |
10 |
14 |