9 Inch Silicone Aeration Disc for Wastewater Treatment High Elastic Membrane Diffuser

• After-sales Service: Half Year
• Warranty: Half Year
• Type: Aerators
• Model NO.: 9 Inch
• Method: Physical Treatment
• Usage: Industrial, Agriculture, Hospital
• Material: Silicone
• Active Surface Area (Square Meter): 0.0375
• Size (Inch): 9
• Design Flow (Cubic Meter/Hr): 2.5-5
• Membrane Thickness (mm): 2
• Hole Size (mm): 1 or 2
• Slit Quantity: 6600
• Sote (%) (4.5m Water Depth): 31-59
• Drag Loss (PA): 2200-4100
• Service Life (Year): Over 5
• Transport Package: CTN
• Specification: 9inch (270mm)
• Trademark: DUBHE
• Origin: China
• HS Code: 8421299090
• Package Size: 74.00cm * 45.00cm * 30.00cm
• Package Gross Weight: 17.000kg

Product Description

Product Description

Membrane fine bubble diffusers, pioneered in the 1980s, deliver exceptional aeration performance throug sub-2mm microbubbles, maximizing gas-liquid contact area for superior oxygen transfer. Validated by Tongji University and China Municipal Engineering North Design Institute, these corrosion-resistant,clog-proof diffusers have demonstrated 40% energy savings or 40% increased treatment capacity versus conventional aerators (spiral, divergent-flow, perforated-pipe types) across 50+ operational sites. Ideal for retrofitting aging municipal/industrial WWTPs and enabling intermittent aeration cycles with zero backflow.

Key Features

Superior Oxygen Transfer Efficiency

Generates 0.1-2mm fine bubbles for 90%+ oxygenation rates, optimizing biological treatment.
Clog-Free Operation

Self-cleaning elastic silicone pores resist biofilm and sludge buildup, reducing maintenance.
Exceptional Chemical Resistance

Withstands pH 3-12, oils, and ozone exposure (ideal for industrial wastewater).
Low Energy Consumption

30% lower pressure loss vs. EPDM/TPU discs, cutting aeration energy costs.
Long Service Life 

Parameter	Model 215 Membrane Diffuser	Model 260 Membrane Diffuser	Model 300 Membrane Diffuser
Design Airflow	1.5-3 m³/h/pc	2-5 m³/h/pc	2-8 m³/h/pc
Service Area	0.3-0.65 m²/pc	0.4-0.8 m²/pc	0.5-1.0 m²/pc
Oxygen Transfer Efficiency (OTE)	22-40%	31-59%	35-59%
Oxygenation Capacity	0.13-0.40 kgO/m³/h	0.21-0.40 kgO/m³/h	0.21-0.40 kgO/m³/h
Submergence Depth	4-8 m	4-8 m	4-8 m
Operational Airflow	1.0-2 m³/h/pc	2-3 m³/h/pc	3-4.25 m³/h/pc
Bubble Diameter	0.9-1.0 mm	0.9-1.0 mm	0.9-1.0 mm
Acid/Alkali Resistance	Moderate	Moderate	Moderate
Oil Resistance	Moderate	Moderate	Moderate

Technical Parameters

Model	Silicone Aeration Disc
Material	Silicone
Active Surface Area (square meter)	0.065
Size (inch)	12 (330mm)
Design Flow (cubic meter/hr)	4.0-8.3
Membrane Thickness (mm)	2
Hole Size (mm)	1 or 2
Slit Quantity	10155
SOTE (%) (4.5m Water Depth)	35-59
Drag Loss (Pa)	2000-4400
Service Life (year)	Over 5

Drawings & Dimensions

Company Profile

Shanghai DUBHE Environmental Protection Technology Co., Ltd.

As a leading manufacturer and solution provider in the wastewater treatment industry, DUBHE specializes in the R&D, production, and global supply of high-performance environmental equipment. Our product portfolio covers:
Aeration Systems: Including premium U.S. SSL aeration devices for efficient oxygenation.
Blowers & Compressors: Energy-efficient solutions for wastewater aeration.
Sludge Dewatering Equipment: Centrifuges, belt presses, and screw presses for reduced sludge volume.
Solid-Liquid Separation: DAF (Dissolved Air Flotation) units, screens, and filters.
Biofiltration Technologies: Advanced biological media and biofilm carriers.
Why Choose DUBHE?
High-Tech Innovation: Our Wuxi Yixing production base integrates cutting-edge manufacturing with strict quality control. End-to-End Solutions: From design to after-sales support, we serve municipal and industrial sectors worldwide.Customer-Centric Approach: Continuous improvement driven by market needs and sustainable design principles.
Committed to Excellence – For Cleaner Water, For a Greener Future.

FAQ

Q: What's the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.
 
Q: Do you provide after-sales service overseas?
A: Yes, we have the best service.
 
Q: Can I request a customized  size?
A: Absolutely! We offer tailored attachments.
 
Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).
 
Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.