SSI ECD215 Disc Diffuser System – Advanced Aeration for Biological
Wastewater Treatment
The fine bubble disc diffuser is a highly efficient aeration device
widely used in wastewater treatment processes, particularly in
aerobic biological treatment systems. It disperses air through fine
pores, generating a large number of microbubbles to enhance oxygen
transfer efficiency and effectively increase dissolved oxygen (DO)
levels in water. This type of diffuser is commonly applied in
aeration tanks, oxidation ditches, and aerobic treatment systems in
wastewater treatment plants.
Working Principle of Fine Bubble Disc Diffusers
The fine bubble disc diffuser operates by forcing compressed air
through a microporous diffusion disc, creating a dense cloud of
fine bubbles. As these bubbles rise through the water, they
facilitate gas-liquid contact, allowing oxygen to dissolve into the
wastewater and increasing its DO concentration. Due to their small
size (typically 1–3 mm in diameter), these bubbles provide a
significantly larger surface area compared to coarse bubbles,
maximizing oxygen transfer efficiency.
Key Advantages:
High Oxygen Transfer Efficiency (OTE): Microbubbles enhance mass transfer, reducing energy consumption.
Uniform Aeration Distribution: Ensures consistent DO levels throughout the tank.
Durable & Clog-Resistant: Advanced membrane materials minimize fouling and extend service
life.
This technology is essential for energy-efficient and
high-performance biological wastewater treatment.
Key Features & Benefits
"Precision-engineered for extreme durability:
• Reinforced piping system with 38% increased wall thickness + dual
support stands resists hydraulic/thermal fatigue
• Proprietary PTFE membranes maintain stable DWP (+/- 5%) while
reducing energy consumption by up to 15% vs standard membranes"
