Disc Diffuser

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Overview

EPDM/Silicone microporous membrane air disc diffuser used in supplying air for breaking down of contaminant in the biological treatment process, by the high oxygen transfer efficiency. It adopts ABS engineering plastics as the main body and is covered with a special rubber EPDM or silicone microporous membrane. The micro-holes will automatically expand while the air income and close while no air comes which avoids the blocking of the holes. A non-return design is to prevent the mixture from entering and blocking the pipeline. The incoming air does not need special filtration and intermittent supply of air does not block the holes and pipes.

Features

Strong sealing, no air leakage.
High oxygen transfer efficiency.
Simple structure, easy to install.
Corrosion resistant, anti-clogging.
Maintenance-free design, long service life.

Structure Diagram

Parameters

Material	Body(ABS)+Membrane(EPDM)			Body(ABS)+Membrane(Silicone)
Specifications	D215	D260	D300	D215	D260	D300
Outer diameter (mm)	215	260	300	215	260	320
Membrane diameter (mm)	180	220	280	180	220	280
Membrane thickness(mm)	2	2	2	2	2	2
Hole diameter (μm)	80-100	80-100	80-100	80-100	80-100	80-100
Hole No.s	4000	6000	8500	4000	6000	8500
Air flow range (m³/h)	1.5-3	2.0-5.6	2.5-6.0	1.5-3	2.0-5.6	2.5-6.0
Service area (m³/h/pcs)	0.25-0.55	0.35-0.75	0.4-0.9	0.25-0.55	0.35-0.75	0.4-0.9
Max. Working temperature (℃)	80	80	80	100	100	100
Oxygenation capacity (KgO2/m³h)	0.112-0.185			0.112-0.185
Dynamic efficiency(kgO2/kWh)	4.46-5.19			4.46-5.19
Oxygen utilization at 3.2m(%)	18.4-22.7			18.4-22.7
Kia (20℃)	0.204-0.337/min			0.204-0.337/min
Working depth (m)	4-8			4-8
Resistance (mm H2O)	180-280			180-280