It is mainly used in biological multiplication process and EBIS process, and can also be used in AAO process.
High reliability, high oxygen transfer rate.
Simple structure, hose style, no need of support base.
Opening size could be adjusted according to demand, so as to meet air flow and oxygen capacity demand.
Uniformed openings and well distributed air flow. Bubble size is between 0.5~1.0mm.
Pulling-through installation and drawing-out replacement, easily for maintenance.
Mode | PR-D215(7"） | PR-D270(9") | PR-D330(12") |
Material of Membrane | EPDM | Silicone rubber | EPDM | Silicone rubber | EPDM | Silicone rubber |
Thickness of membrane | 2.0mm±0.1mm | 2.0mm±0.1mm | 2.0mm±0.1mm | 2.0mm±0.1mm | 2.0mm±0.1mm | 2.0mm±0.1mm |
Effective diffusion area | 0.023㎡ | 0.023㎡ | 0.045㎡ | 0.045㎡ | 0.070㎡ | 0.070㎡ |
Openings/pc | about 3500 openings | about 3500 openings | about 6500 openings | about 6500 openings | about 10000 openings | about 10000 openings |
Diameter of bubble | 0.8mm-1.5mm | 1.0mm-1.8mm | 0.8mm-1.5mm | 1.0mm-1.8mm | 0.8mm-1.5mm | 1.0mm-1.8mm |
Lifetime of membrane | ＞6yrs | ＞6yrs | ＞6yrs | ＞6yrs | ＞6yrs | ＞6yrs |
Standard volume of aeration | 1.5m³/h-2.5m³/h | 1.5m³/h-2.5m³/h | 2.5m³/h-4.0m³/h | 2.5m³/h-4.0m³/h | 4.0m³/h-6.0m³/h | 4.0m³/h-6.0m³/h |
Aeration range | 1m³/h-5m³/h | 1m³/h-5m³/h | 1.5m³/h-7.0m³/h | 1.5m³/h-7.0m³/h | 2.5m³/h-10m³/h | 2.5m³/h-10m³/h |
Resistance loss | 2.0kPa-4.5kPa | 2.0kPa-4.0kPa | 2.0kPa-4.3kPa | 2.0kPa-4.0kPa | 2.0kPa-4.2kPa | 2.0kPa-4.0kPa |
Standard oxygen transfer rate
(depth of water:6m) | ≥38% | ≥36% | ≥38% | ≥36% | ≥38% | ≥37% |
Standard oxygenation capacity | ≥0.30kgO2/h | ≥0.28kgO2/h | ≥0.37kgO2/h | ≥0.34kgO2/h | ≥0.55kgO2/h | ≥0.52kgO2/h |
Theoretical power efficiency | ≥9.1kgO2/kw.h | ≥8.9kgO2/kw.h | ≥9.0kgO2/kw.h | ≥8.9kgO2/kw.h | ≥8.9kgO2/kw.h | ≥8.8kgO2/kw.h |
Service aera | 0.2㎡/pc-0.64㎡/pc | 0.2㎡/pc-0.64㎡/pc | 0.25㎡/pc-1.0㎡/pc | 0.25㎡/pc-1.0㎡/pc | 0.4㎡/pc-1.5㎡/pc | 0.4㎡/pc-1.5㎡/pc |
l Model：PR-D215/PR-D270/ PR-D330
l Diameter：215mm/270mm/330mm
l Membrane：EPDM/Silicone rubber
l Support base material：PP/ABS
l Adaptable pipe model：DN50/DN65/DN80/DN100
l Connection type：DN20 male thread