EPDM Membrane Fine Bubble Disc Diffuser for Wastewater Treatment

Short Description:

Our EPDM membrane fine bubble disc diffuser is engineered for high-efficiency aeration in wastewater treatment systems. The diffuser features a precision-designed slit and split pattern on the membrane surface, generating uniform fine bubbles that maximize oxygen transfer efficiency. An integrated check valve ensures reliable air-on/air-off performance, while its robust structure allows for long-term operation with minimal maintenance.

This fine bubble disc diffuser is suitable for a wide range of applications in municipal and industrial wastewater systems, offering low headloss, high durability, and energy-saving performance.

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Product Detail

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Key Features

✅Low airflow resistance, reduced headloss
✅High tear resistance and long service life
✅Anti-clogging and anti-backflow design
✅Aging-resistant and corrosion-resistant materials
✅High oxygen transfer efficiency, energy-saving
✅Minimal maintenance requirements
✅Compact and strong structural support

material

1. EPDM (Ethylene Propylene Diene Monomer)
- Excellent resistance to heat, ozone, UV, and oxidation
- Non-polar and chemically resistant with low water absorption
- Great electrical insulation properties
2. Silicone
- Chemically stable, non-toxic, and tasteless
- Insoluble in water and most solvents
- Resistant to strong acids and bases
3. PTFE (Polytetrafluoroethylene)
- Extreme temperature resistance (-196°C to 250°C)
- High chemical and solvent resistance
- Very low friction and non-adhesive surface

EPDM

PTFE

Silicon

Typical Applications

☑️Fish pond aeration and aquaculture systems
☑️Deep tank or basin aeration in wastewater treatment plants
☑️Treatment of animal waste and livestock wastewater
☑️Aeration for denitrification and dephosphorization processes
☑️High-concentration wastewater aeration systems
☑️Aeration for regulating tanks and balancing ponds
☑️Application in SBR, MBBR, contact oxidation, and activated sludge processes

Technical Parameters

Model	HLBQ-170	HLBQ-215	HLBQ-270	HLBQ-350	HLBQ-650
Bubble Type	Coarse Bubble	Fine Bubble	Fine Bubble	Fine Bubble	Fine Bubble
Image
Size	6 inch	8 inch	9 inch	12 inch	675*215mm
MOC	EPDM/Silicone/PTFE – ABS/Strengthened PP-GF
Connector	3/4''NPT male thread
Membrane Thickness	2mm	2mm	2mm	2mm	2mm
Bubble Size	4-5mm	1-2mm	1-2mm	1-2mm	1-2mm
Design Flow	1-5m³/h	1.5-2.5m³/h	3-4m³/h	5-6m³/h	6-14m³/h
Flow Range	6-9m³/h	1-6m³/h	1-8m³/h	1-12m³/h	1-16m³/h
SOTE	≥10%	≥38%	≥38%	≥38%	≥40%
SOTE	（6m submerged）	（6m submerged）	（6m submerged）	（6m submerged）	（6m submerged）
SOTR	≥0.21kg O₂/h	≥0.31kg O₂/h	≥0.45kg O₂/h	≥0.75kg O₂/h	≥0.99kg O₂/h
SAE	≥7.5kg O₂/kw.h	≥8.9kg O₂/kw.h	≥8.9kg O₂/kw.h	≥8.9kg O₂/kw.h	≥9.2kg O₂/kw.h
Headloss	2000-3000Pa	1500-4300Pa	1500-4300Pa	1500-4300Pa	2000-3500Pa
Service Area	0.5-0.8㎡/pcs	0.2-0.64㎡/pcs	0.25-1.0㎡/pcs	0.4-1.5㎡/pcs	0.5-0.25㎡/pcs
Service Life	＞5 years