Coarse Bubble Disc Diffuser
Key Features
| Coarse Bubble Disc Diffuser | : | Product Name Coarse Bubble Disc Diffuser Type Aeration Diffuser Shape Disc Type Bubble Size 3 – 5 mm Membrane Material EPDM / Silicone Rubber Body Material ABS / PP Reinforced Plastic Disc Diameter 150 mm / 200 mm / 300 mm (customizable) Air Flow Rate 1.5 – 8.0 m³/hr Oxygen Transfer Efficiency (OTE) 1.0 – 1.5% per meter submergence Pressure Range 0.3 – 0.6 bar Connection Type Threaded or Slip-on (customized as required) Operating Temperature Up to 80°C Installation Fixed or Removable Diffuser Mount Recommended Application Aeration tanks, Equalization tanks, Sewage & Industrial wastewater treatment Advantages Clog-resistant, low maintenance, uniform bubble distribution, high mixing performance Maintenance Interval 12 – 24 months (depending on operating conditions) Service Life Over 5 years under standard conditions Country of Origin India Brand Indian Carbon |
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Coarse Bubble Disc Diffuser —
Coarse Bubble Disc Diffusersare essential aeration devices designed to introduce air or oxygen efficiently
into wastewater and industrial water systems. These diffusers generate
relatively large air bubbles, ensuring effective mixing, oxygenation, and
suspension of solids in the tank. With robust construction and energy-efficient
operation, coarse bubble disc diffusers are widely used in municipal wastewater
treatment plants, industrial effluent systems, and aquaculture, providing
reliable performance and long service life.
Working
Principle
Coarse Bubble DiscDiffusers operate by dispersing compressed air from a blower or compressor
through a perforated or slotted membrane into the liquid. The diffuser emits
coarse bubbles, typically ranging from 6–25 mm in diameter. As these bubbles
rise through the liquid, they transfer oxygen while creating turbulence that
ensures effective mixing of solids and liquids.
Unlike fine bubble
diffusers, which focus on maximizing oxygen transfer efficiency, coarse bubble
diffusers excel in applications requiring high-energy mixing, agitation, or
oxygen distribution over large volumes of liquid. They are particularly suited
for tanks with high solids concentration or short hydraulic retention times.
Design and
Construction
Coarse Bubble DiscDiffusers are built for durability and reliable performance in harsh wastewaterand industrial environments. They typically consist of a rigid disc or plate
made from corrosion-resistant materials such as high-strength polymers, stainless
steel, or reinforced plastics. The membrane or perforated disc allows air to
pass through while maintaining resistance to clogging and wear.
Key design
features include:
·
Rigid Disc Base: Provides
structural stability under high airflow and pressure conditions.
·
Perforated or Slotted Membrane: Ensures consistent bubble formation and prevents clogging.
·
Flexible or Elastic Materials: Enable easy installation and maintenance while resisting
wear and tear.
·
Corrosion-Resistant Materials: Suitable for chemical-laden or aggressive wastewaterenvironments.
·
Uniform Bubble Distribution:
Optimizes oxygen transfer and promotes thorough mixing throughout the tank.
Some models include
mounting adapters, quick-connect fittings, or floatation assemblies to simplify
installation in various tank configurations.
Performance
and Efficiency
Coarse Bubble DiscDiffusers are engineered for high airflow and effective mixing in tanks withsubstantial solids content. While oxygen transfer efficiency is lower than fine
bubble diffusers, they excel in keeping solids in suspension and preventing
sludge deposition.
·
Bubble Diameter: 6–25 mm
depending on design and airflow
·
Airflow Rate: 2–20 m³/h per
diffuser (model dependent)
·
Operating Depth: 1–5 meters (depending
on tank design)
·
Oxygen Transfer Efficiency:
Typically 5–15% per meter of submergence
·
Durability: Resistant tofouling, abrasion, and chemical exposure
·
Energy Efficiency:
Low-pressure operation reduces blower energy requirements while ensuring proper
aeration
These diffusers are
ideal for processes where thorough mixing and agitation are required along with
moderate oxygen transfer.
Applications
Coarse Bubble Disc
Diffusers are versatile and find application in multiple industries and water
treatment processes:
·
Municipal Wastewater Treatment: Aeration in activated sludge tanks, oxidation ditches, and
secondary clarifiers.
·
Industrial Effluent Treatment: Aeration in chemical, textile, pulp & paper, food &
beverage, and pharmaceutical wastewater systems.
·
Sludge Mixing: Keeps solids
suspended and ensures uniform oxygen distribution.
·
Aquaculture: Provides
oxygenation in ponds and tanks to maintain healthy aquatic life.
·
Pre-Treatment Tanks:Aeration in equalizt.
Their robustness and
high-mixing capability make them suitable for systems with high solids,
turbulent flows, or variable operating conditions.
Advantages
·
Robust and Durable:
Resistant to clogging, abrasion, and chemical corrosion.
·
Efficient Mixing: Coarse
bubbles create turbulence for uniform suspension of solids.
·
Low Maintenance: Simple
design reduces operational downtime.
·
Energy Efficient: Operates
at low pressure, reducing blower power consumption.
·
Long Service Life: Durable
construction and corrosion-resistant materials ensure longevity.
·
Easy Installation: Modular
design allows simple placement, replacement, and maintenance.
·
Wide Application Range:
Suitable for municipal, industrial, and aquaculture applications.
Installation and Maintenance
Coarse Bubble DiscDiffusers are typically installed on manifolds within the aeration tank. They
are secured using clips, adapters, or flexible connections to ensure proper
alignment and air distribution.
Routine maintenance
includes:
·
Checking and cleaning
membranes to prevent clogging
·
Inspecting for wear or
damage
·
Ensuring proper airflow
and pressure from the blower system
With regular
preventive maintenance, these diffusers provide consistent performance over many
years.
Safety and Operational
Considerations
·
Ensure airflow and
operating pressure are within the diffuser’s rated range to prevent damage.
·
Avoid exposure to highly
aggressive chemicals beyond the diffuser’s material limits.
·
Use pressure relief and
non-return valves in the air supply system to protect the diffuser and piping.
·
Regular inspection and
cleaning maintain optimal bubble formation and aeration efficiency.
Following these
guidelines ensures safe, reliable operation and prolongs the diffuser’s
operational life.
Conclusion
Coarse
Bubble Disc Diffusers offer a reliable, durable, and
cost-effective solution for aeration in wastewater
treatment, industrial effluent treatment, and aquaculture. By generating large,
robust air bubbles, they ensure effective oxygenation, uniform mixing, and
suspension of solids in high-flow or high-solids environments.
With their
energy-efficient design, corrosion-resistant materials, and low-maintenance
operation, coarse bubble disc diffusers remain an essential component for
achieving optimal aeration performance, improved process efficiency, and
sustainable water management across municipal and industrial applications.
| Coarse Bubble Disc Diffuser | Product Name Coarse Bubble Disc Diffuser Type Aeration Diffuser Shape Disc Type Bubble Size 3 – 5 mm Membrane Material EPDM / Silicone Rubber Body Material ABS / PP Reinforced Plastic Disc Diameter 150 mm / 200 mm / 300 mm (customizable) Air Flow Rate 1.5 – 8.0 m³/hr Oxygen Transfer Efficiency (OTE) 1.0 – 1.5% per meter submergence Pressure Range 0.3 – 0.6 bar Connection Type Threaded or Slip-on (customized as required) Operating Temperature Up to 80°C Installation Fixed or Removable Diffuser Mount Recommended Application Aeration tanks, Equalization tanks, Sewage & Industrial wastewater treatment Advantages Clog-resistant, low maintenance, uniform bubble distribution, high mixing performance Maintenance Interval 12 – 24 months (depending on operating conditions) Service Life Over 5 years under standard conditions Country of Origin India Brand Indian Carbon |
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