EPDM fine bubble disc diffuser
Fine Bubble Disc Diffusers for Wastewater Aeration Tanks
Blue Water disc diffusers are built for municipal and industrial aeration basins where oxygen transfer, stable airflow, anti-clogging performance, and replacement cost all matter before quotation.
Blue Water fine bubble disc diffusers are used for wastewater aeration tanks, biological treatment basins, SBR, MBBR, oxidation tanks, and retrofit replacement projects where stable oxygen transfer and practical maintenance matter.
Product Specifications / 产品参数
Disc diffuser product specifications.
Use BW-DD model data to compare diameter, airflow per diffuser, service area, oxygen utilization, and connection before quotation.
| Parameter | BW-DD-215 | BW-DD-260 | BW-DD-330 |
|---|---|---|---|
| Diameter | Dia. 215 mm, 8 inch | Dia. 260 mm, 9 inch | Dia. 330 mm, 13 inch |
| Membrane material | TPU / EPDM / Silicone | TPU / EPDM / Silicone | TPU / EPDM / Silicone |
| Membrane thickness | 1.9-2.0 mm | 1.9-2.0 mm | 1.9-2.0 mm |
| Perforations per piece | 3400 EPDM / 3400 Silicone | 4500 EPDM / 4500 Silicone | 8500 EPDM / 8500 Silicone |
| Pore size | 1 mm | 1 mm | 1 mm |
| Bubble diameter | 0.8-2 mm | 0.8-2 mm | 0.8-2 mm |
| Working airflow | 1.5-2.5 m3/h | 3-4 m3/h | 5-6 m3/h |
| Service area | 0.3-0.65 m2 | 0.4-0.8 m2 | 0.5-1.0 m2 |
| Oxygen utilization | 22-40% | 31-49% | 35-59% |
| Oxygenation capacity | 0.13-0.4 kgO2/h | 0.21-0.4 kgO2/h | 0.21-0.53 kgO2/h |
| Submerged depth | 4-8 m | 4-8 m | 4-8 m |
| Air supply at 4 m water depth | 2 m3/h | 2 m3/h | 2 m3/h |
| Support plate | ABS / PP | ABS / PP | ABS / PP |
| Shape | Flat / arched | Flat / arched | Flat / arched |
| Connection | G3/4 or G1 external thread | G3/4 or G1 external thread | G3/4 or G1 external thread |
Problems Buyers Usually Need to Solve
The right diffuser is not selected by diameter alone. It must match the basin, water quality, airflow, and maintenance plan.
High Energy Cost
Oversized or inefficient aeration wastes blower power and makes operating cost hard to control.
Clogging and Uneven Air
Blocked pores, poor distribution, and unstable resistance reduce oxygen transfer across the basin.
Membrane Aging
Wastewater chemistry, temperature, oil, and long service periods can weaken membrane performance.
Difficult Retrofit
Existing pipe layout, basin depth, and shutdown time all affect installation and replacement planning.
Product Advantages
Designed as a practical diffuser choice for fine bubble aeration, oxidation tanks, and retrofit projects.
Fine Bubble Oxygen Transfer
Micro-perforated EPDM membrane supports fine bubble release for stable oxygen transfer in biological treatment tanks.
Stable Airflow Resistance
The membrane and support structure are selected to help maintain consistent airflow under normal operating conditions.
Easy Replacement
Disc format is suitable for common aeration grids and allows practical membrane or diffuser replacement during maintenance.
Disc Diffuser Construction
Use the front, membrane surface, and back structure to explain the product clearly during quotation discussions.
Where This Diffuser Is Used
One diffuser page should help customers recognize whether the product fits their tank before they send an inquiry.
Municipal Wastewater
For biological treatment basins, oxidation ditches, SBR tanks, and plant upgrade projects.
Industrial Wastewater
For food and beverage, textile, paper, chemical, pharmaceutical, landfill leachate, and high-strength wastewater.
Aquaculture and Fish Farming
For ponds or recirculating systems where stable dissolved oxygen and easy maintenance are important.
How Blue Water Helps With Selection
For aeration projects, we help buyers move from tank data to diffuser type, material choice, quantity estimate, and layout direction.
Water Type
Municipal, industrial, oxidation tank, or aquaculture.
Tank Data
Length, width, water depth, and process type.
Air Demand
Blower capacity, airflow target, and DO requirement.
Material
EPDM or silicone according to wastewater conditions.
Layout
Diffuser quantity, pipe spacing, and replacement plan.
Product Catalog / 产品册
Download product catalogs and parameter sheets.
Product catalogs will be added here after the electronic brochures are uploaded. For now, please contact Blue Water and we will send the latest product information by email.
Quick Project Data / 快速项目数据
Submit structured data for faster diffuser selection.
If you already have tank data, use the quick selection form below. Most items are dropdown choices, and only dimensions or notes need typing. If the project data is not final yet, you can still contact us directly and discuss the selection with our technical team.
Need a Disc Diffuser Recommendation?
Send tank dimensions, water depth, wastewater type, blower capacity, and target airflow. Blue Water can help match diffuser material, quantity, and layout direction before quotation.