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Coarse Bubble Diffusers
SPECIFICATION
SHAPE
DISC TYPE
DIA SIZE
80mm to 150mm
MOC OF MEMBRANE
EPDM / SILICONE
MAX. PRESSURE ALLOWED
1 kg/cm2 - 1.5kg/cm2
AIR FLOW RANGE
1-10 m3/hr
MAX. OPERATING TEMP.
60° C
Types Of Coarse Bubble Diffusers
What Are Coarse Bubble Diffusers and Why They Matter in Wastewater
overview
Coarse Bubble Diffusers are aeration devices used in wastewater treatment to mix and oxygenate the water. They produce large air bubbles (usually 4–6 mm), which rise rapidly and create strong mixing. This helps in keeping solids suspended and providing oxygen to aerobic bacteria.
These diffusers are known for being simple, durable, and clog-resistant. Especially in industrial or municipal wastewater, where water is full of grease, solids, and chemicals — coarse bubble diffusers wastewater solutions perform much better than fine bubble systems. Their large orifices prevent blockages, and they need very little maintenance.
At Vasu Pharmatech, we design and supply coarse bubble systems for clients who want long-lasting performance without frequent cleaning or downtime.
Coarse Bubble vs Fine Bubble: Know the Difference
People often ask, “Why not just go for fine bubble diffusers?” The answer lies in your wastewater type and plant conditions. Fine bubble systems are more efficient in terms of oxygen transfer — but they clog easily and require frequent cleaning.
Here’s a simple comparison:
| Feature | Coarse Bubble Diffusers | Fine Bubble Diffusers |
|---|---|---|
| Bubble Size | 4–6 mm | 1–3 mm |
| Oxygen Transfer | Medium | High |
| Mixing Power | High | Moderate |
| Clogging Risk | Low | High |
| Ideal Use | Grit, EQ, Sludge zones | Final polishing tanks |
For pre-treatment and heavy load areas, Coarse Bubble Diffusers are a better and safer choice. At Vasu Pharmatech, we even help clients combine both systems — coarse in the beginning, fine later — for full-stage aeration efficiency.
Advantages
Where Coarse Bubble Diffusers Work Best
Coarse Bubble Diffusers are not meant for every zone — but where they fit, they perform exceptionally well. These include equalization tanks, sludge digesters, grit chambers, and industrial ETPs. In such areas, solids settle fast, and mixing is more important than oxygen efficiency.
Because of their strong upward flow, they keep tanks clean and prevent bottom sludge from hardening. In wastewater that contains oils, chemicals, or fluctuating loads, coarse bubble diffusers offer a safe and low-risk solution.
Many clients use our Coarse Bubble Disc Diffuser model for these applications because it’s compact, reliable, and easy to install. With very little maintenance, it delivers consistent aeration for years.
Vasu Pharmatech
How to Choose the Right Coarse Bubble Diffuser
When buying Coarse Bubble Diffusers, don’t just look at price. Consider your tank size, air supply, and the type of wastewater you treat. For example, oil-rich or chemical-heavy wastewater needs EPDM or PTFE-coated membranes.
Also, if your tank is long or narrow, tube-type diffusers work best. For round or compact tanks, go for disc-type. The Coarse Bubble Diffusers manufacturers at Vasu Pharmatech can help you select the right type, layout, and quantity based on your blower size and tank dimensions.
Most importantly, look for systems that are easy to maintain. Our clients prefer Vasu’s modular diffuser units — which are easy to install and last for years without choking or breakdowns.
Why Vasu Pharmatech Is the Right Partner for Coarse Bubble Diffusers
At Vasu Pharmatech, we understand real-world plant challenges — like irregular loads, high TSS, oil deposits, and tight project timelines. That’s why our Coarse Bubble Diffusers are built with rugged materials and tested under actual plant conditions.
Here’s what we offer:
High-quality disc and tube models
Customizable diffuser layouts
Technical guidance from design to installation
Fast delivery across India
Long-term service and support
We’re not just Coarse Bubble Diffusers manufacturers — we’re solution providers. Whether it’s a municipal STP or an industrial ETP, we’ll help you choose a system that runs smoothly with low energy, low maintenance, and maximum uptime.
Coarse bubble diffusers produce larger air bubbles (4–6 mm), ideal for strong mixing and clog-free operation in heavy-load tanks. Fine bubble diffusers produce smaller bubbles for higher oxygen transfer but are more prone to clogging and need frequent maintenance.
Coarse bubble diffusers are commonly used in grit chambers, equalization tanks, sludge holding tanks, and industrial ETPs where mixing is more important than oxygen efficiency.
Yes, coarse bubble diffusers are ideal for wastewater with high total suspended solids (TSS), grease, and chemicals. Their wide orifice design prevents clogging and ensures long-lasting performance.
Selection depends on tank size, airflow rate, wastewater type, and maintenance capacity. Vasu Pharmatech provides custom recommendations based on your plant layout and process needs.
Vasu Pharmatech offers durable, low-maintenance coarse bubble disc and tube diffusers made with high-quality materials. We provide full support from design to delivery across India.
★★★★★ 5/5
Reviews and Ratings
We certify that M/s. Vasu Pharmatech, located at 66B, Pocket AD Shalimar Bagh, Delhi-110088, supplied us with a Pharmatech filter press for our 275 KLD ETP plant at M/s. Asian Colour Coated Ispat Ltd. in Bawal, Dist: Rewari (Hr.). The plant was started in January 2018 and is still working well. The product and its performance have been satisfactory up to now.
ASIAN COLOUR COATED ISPAT LIMITED
Rewari, Haryana
