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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
overview
What is a Coarse Bubble Diffuser?
A coarse bubble diffuser is an aeration device that releases relatively large air bubbles (3–12 mm in diameter) into water. Unlike fine bubble diffusers that focus on maximizing oxygen transfer efficiency, coarse diffusers emphasize strong mixing and agitation, preventing solids from settling at the bottom of tanks. These diffusers are often installed in equalization tanks, aeration tanks, grit chambers, and anaerobic reactors where high turbulence is required.
They are also known for their durability, low maintenance requirements, and ability to handle high loads of wastewater with grease, oil, or solid particles. Coarse bubble diffusers provide uniform mixing, reduce clogging risks, and ensure stable performance even under challenging conditions. Because of these benefits, they are widely used in municipal sewage treatment plants, industrial wastewater treatment, and various biological processes where robust mixing is more important than oxygen transfer efficiency.
Technical Features of Vasu Pharmatech Coarse Bubble Diffusers
Vasu Pharmatech designs durable and efficient aeration equipment suited for diverse wastewater conditions. Typical features include:
- Shape: Disc or tube type
- Bubble Size: 3–12 mm
- Air Flow Range: 2–10 m³/hr (depending on model)
- Operating Pressure: Up to 1.5 kg/cm²
- Material of Construction: EPDM, polypropylene, or PVC for long life
- Applications: STP, ETP, aeration tanks, grit removal
These features ensure that the diffusers can withstand tough operating environments while delivering consistent performance.
Types of Coarse Bubble Diffusers
1. Coarse Bubble Disc Diffuser
- Design: Disc-shaped diffuser with multiple perforations.
- Performance: Provides large bubbles and strong agitation.
- Best For: Equalization tanks and aeration tanks with high solids.
2. Coarse Bubble Tube Diffuser
- Design: Tube-shaped diffuser, longer coverage area.
- Performance: Produces steady bubble release across a wider surface.
- Best For: Large tanks requiring uniform mixing.
Vasu Pharmatech
Coarse Bubble Diffuser vs Fine Bubble Diffuser
| Feature | Coarse Bubble Diffuser | Fine Bubble Diffuser |
|---|---|---|
| Bubble Size | 3–12 mm | 0.8–1.9 mm |
| Oxygen Transfer Efficiency | Moderate | High |
| Mixing Power | Strong | Moderate |
| Clogging Resistance | High | Moderate (can clog) |
| Best Use | High-solids wastewater, mixing | Aerobic digestion, STP aeration |
| Maintenance | Low | Moderate to high |
Applications of Coarse Bubble Diffusers
Coarse bubble diffusers have widespread use across industries and municipal projects. Some major applications include:
1. Sewage Treatment Plants (STPs)
- Installed in aeration tanks to prevent sludge settling.
- Helps in equalization tanks for proper mixing.
2. Effluent Treatment Plants (ETPs)
- Used in industries like textiles, pharmaceuticals, food processing, and chemicals.
- Keeps heavy solids in suspension during treatment.
3. Grit Chambers
- Prevents settling of inorganic matter like sand and grit.
- Ensures smoother downstream treatment.
4. Anaerobic and Anoxic Reactors
- Maintains mixing without excessive oxygen transfer.
- Useful in biological nutrient removal (BNR) processes.
5. Aquaculture Systems
- Provides agitation and limited oxygen for fish and shrimp ponds.
- Prevents dead zones in large tanks.
Benefits of Coarse Bubble Diffusers
Using coarse bubble air diffusers comes with several advantages:
- Strong Mixing: Keeps solids in suspension, preventing sludge build-up.
- Low Maintenance: Larger holes reduce clogging risk.
- Durability: Made from robust materials like EPDM and PVC.
- Versatile Use: Suitable for municipal and industrial wastewater.
- Cost-Effective: Lower initial investment compared to some fine bubble systems.
- Continuous Operation: Reliable even in high-solid or grease-heavy wastewater.
Factors Affecting Coarse Bubble Diffuser Price
When evaluating the coarse bubble diffuser price, consider the following factors:
- Design Type: Disc vs tube diffuser.
- Size & Capacity: Larger diffusers may cost more.
- Material of Construction: EPDM membranes are affordable, while silicone or advanced plastics may increase cost.
- Air Flow Range: Higher capacity diffusers are priced higher.
- Manufacturer Reputation: Reliable brands like Vasu Pharmatech provide longer-lasting equipment.
Though cheaper options exist, poor-quality diffusers often fail prematurely, resulting in higher replacement costs.
How to Select the Right Coarse Diffuser
Choosing the right diffuser depends on your application:
- STP Aeration Tank: Go for disc-type coarse diffusers.
- Large Equalization Tanks: Tube diffusers are better for wide coverage.
- Industries with Heavy Solids: Use robust EPDM coarse air diffusers.
- Hybrid Systems: Combine coarse diffusers for mixing and fine bubble diffusers for oxygen transfer.
Practical Example: Coarse Bubble Diffuser in Use
A textile industry effluent treatment plant was facing issues with sludge deposition in equalization tanks. After installing coarse bubble diffusers from Vasu Pharmatech, the plant observed:
- 100% elimination of sludge build-up
- Reduced downtime for cleaning tanks
- Longer membrane life due to anti-clogging design
- Improved overall system efficiency
This case highlights how coarse bubble diffusers are practical, reliable, and cost-saving in heavy-duty environments.
Why Choose Vasu Pharmatech Coarse Bubble Diffusers?
Vasu Pharmatech is one of the leading coarse bubble diffuser manufacturers in India, known for supplying high-quality aeration equipment to municipal and industrial projects.
- Durable Materials: EPDM, silicone, and PVC membranes for long-lasting use.
- Wide Product Range: Both coarse bubble disc diffusers and coarse bubble tube diffusers.
- Custom Solutions: Designed to match client-specific STP and ETP requirements.
- Proven Performance: Optimized bubble size for strong mixing and reliable aeration.
- Export Capability: Trusted by domestic and international clients.
Conclusion
A coarse bubble diffuser is not just an aeration device—it’s a solution for reliable mixing, clog-free operation, and long-lasting wastewater treatment performance. While fine bubble diffusers excel in oxygen transfer, coarse bubble aeration systems remain unmatched in handling high-solid, grease-laden, and challenging environments.
By choosing Vasu Pharmatech, industries and municipalities get:
- Trusted performance
- Affordable coarse bubble diffuser price
- Energy-efficient mixing solutions
- Durable designs tailored to their needs
Upgrade your wastewater treatment process today with Vasu Pharmatech coarse bubble diffusers—strong, reliable, and built for demanding environments.
About The Author
Lalit Nankani
Managing Partner, Vasu Pharmatech
Lalit Nankani has over 12 years of experience in the filtration and water treatment industry. He leads Vasu Pharmatech, a trusted name in making PP Filter Press Systems, MBBR Filter Media, and other filtration products.
Under his leadership, the company has delivered high-quality solutions to many industries like pharmaceuticals, chemicals, food and beverage, textiles, and wastewater treatment. Lalit believes in providing strong, easy-to-use, and cost-effective systems that help businesses clean and reuse water.
Q1. What is this diffuser mainly used for?
It is designed for mixing water and preventing solids from settling in treatment tanks.
Q2. How large are the bubbles it produces?
The bubbles are quite big, usually between 3 mm and 12 mm.
Q3. In which tanks are they commonly installed?
They are mostly placed in aeration tanks, grit chambers, equalization tanks, and anaerobic reactors.
Q4. How is it different from a fine bubble model?
Fine ones focus on oxygen transfer, while this type focuses on mixing and agitation.
Q5. Why is mixing important in wastewater treatment?
Proper mixing prevents solids from settling, ensures uniform distribution of oxygen, and improves biological treatment.
Q6. What are the key benefits of using them?
They are durable, resist clogging, require little upkeep, and work well in tough conditions.
Q7. Are they energy efficient?
They use more energy than fine bubble systems but deliver stronger mixing power.
Q8. Can they handle wastewater with grease and oil?
Yes, they are suitable for challenging wastewater with oils, fats, or heavy solids.
Q9. What materials are they usually made from?
Mostly EPDM or silicone rubber, designed to withstand harsh environments.
Q10. How long do they usually last?
With proper care, they can work reliably for several years.
Q11. Which industries rely on them?
Municipal plants, food processing, textiles, and chemical industries often use them.
Q12. Do they require frequent cleaning?
No, they resist clogging, so maintenance is minimal compared to fine bubble systems.
Q13. Can they be used in anaerobic processes?
Yes, they are effective where strong agitation is needed, including anaerobic systems.
Q14. How is airflow measured?
It is measured in cubic meters per hour depending on size and design.
Q15. Do they help lower maintenance costs?
Yes, their durability and clog resistance make upkeep more affordable.
Q16. Can they work together with fine bubble models?
Yes, many plants use both types to balance oxygen transfer and mixing.
Q17. What is the typical price range?
The cost depends on size, material, and supplier, but they are generally cost-effective.
Q18. How do I choose between coarse and fine bubble diffusers?
Choose coarse diffusers when you need strong mixing and fine diffusers when oxygen transfer efficiency is the priority.
Q19. Are they suitable for deep tanks?
Yes, the large bubbles rise quickly, creating strong vertical movement in deep tanks.
Q20. Why consider Vasu Pharmatech for these products?
Because the company delivers reliable, high-quality solutions that perform well in real-world conditions.
Products
We Have The Best Water Treatment Products
Vasu Pharmatech offers high-quality wastewater treatment products designed for efficient, reliable, and sustainable solutions.
A filter press uses plates to form filter cakes, separating slurry into filtrate.
MBBR filter media: biologically active carrier tailored to water properties.
Coarse bubble diffuser: Submerged aeration for microbial degradation.
Fine bubble disc diffuser: Submerged aeration for microbial degradation.
Fine bubble diffuser: Submerged aeration for microbial degradation.
Coarse bubble diffuser: Submerged aeration for microbial degradation.
Fine bubble diffuser: Submerged aeration for microbial degradation.
testimonials
What Our Clients Say About Us
Rohit Mehra
Delhi
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Vasu Pharmatech se liya MBBR Media, quality top class hai aur price bhi reasonable.
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Ahmedabad
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Maine unka Tube Settler Media STP project ke liye liya, installation easy tha aur result superb.
Anil Kapoor
Kolkata
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Yahan ka Fine Bubble Diffuser bahut durable hai, paani ka treatment smooth ho gaya.
Deepak Singh
Mumbai
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MBBR Media ka material strong hai aur bio growth fast karta hai, highly recommended.
Meera Joshi
Chennai
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Delhi me best Tube Deck Media Supplier mujhe Vasu Pharmatech hi mila.
Suresh Kumar
Delhi
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FAB Reactor ka design simple hai aur efficiency outstanding, paise vasool product.
Priya Sharma
Hyderabad
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Inka Filter Press Machine sludge dewatering ke liye best hai, smooth operation milti hai.
Vikram Patel
Gujarat
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Maine Disc Diffuser Aerator lagaya STP me, oxygen transfer rate awesome hai.
Rashmi Nair
Kerala
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Unka Automatic Filter Press kaafi easy hai operate karne me, maintenance kam hai.
Rohit Mehra
Delhi
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Vasu Pharmatech se liya MBBR Media, quality top class hai aur price bhi reasonable.
Sunita Rani
Ahmedabad
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Maine unka Tube Settler Media STP project ke liye liya, installation easy tha aur result superb.
Anil Kapoor
Kolkata
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Yahan ka Fine Bubble Diffuser bahut durable hai, paani ka treatment smooth ho gaya.
Arun Yadav
Rajasthan
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PVC Tube Settler ka quality imported jaisa hi hai, aur delivery bhi time pe.
Sandeep Malhotra
Punjab
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MBBR STP ke liye inke pass best quality Fab Bio Pack Media milta hai.
Anjali Verma
Delhi
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Maine Coarse Bubble Diffuser use kiya, wastewater aeration me zabardast output mila.
Mohit Gupta
Ahmedabad
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Tube Diffuser ka material strong hai aur price market se kaafi better mila.
Kiran Bansal
Kolkata
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Vasu Pharmatech ka Plate and Frame Filter Press long-lasting hai, kaafi satisfied hoon.
Naveen Rao
Bangalore
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MBBR Reactor purchase kiya aur ab system ka performance double ho gaya.
Harpreet Kaur
Amritsar
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EPDM Fine Bubble Disc Diffuser ka bubble size uniform hai, bilkul sahi product.
Ashok Jain
Surat
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Delhi NCR me inka MBBR Media Supplier service fast aur reliable hai.
Rajesh Sharma
Delhi
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Unka Tubular Diffuser lagane ke baad energy saving noticeable hai.
Pooja Sinha
Kanpur
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Hydraulic Filter Press ka design kaafi advanced hai, easy to handle.
Imran Ali
Lucknow
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FAB Media ka flow aur treatment efficiency dono hi best hai.
Nisha Mehta
Mumbai
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MBBR Wastewater Treatment project me inki products use karke results amazing aaye.
Abhishek Tiwari
Indore
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Filter Press Sludge Dewatering system smooth chalta hai, koi dikkat nahi aayi.
Geeta Rathi
Delhi
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Inka Clear PP Tube Settler STP ke liye perfect fit raha.
Manoj Patel
Ahmedabad
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Vasu Pharmatech ka Diffuser Tube bilkul leakage free aur effective hai.
Sonia Kapoor
Delhi
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Maine Membrane Tube Diffuser lagaya, performance bahut acha hai.
Farhan Sheikh
Jaipur
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Coarse Bubble Diffuser ka aeration kaafi fast hai, kaam asaan ho gaya.
Kavita Nair
Kerala
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FAB Reactor media ka biofilm growth uniform hai, kaafi achha experience.
Ravi Bansal
Delhi
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Verified Purchase
Tube Settler Media ka installation unke team ne jaldi complete kar diya.
Prakash Menon
Tamil Nadu
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Vasu Pharmatech ka Automatic Filter Press Machine time aur labor dono save karta hai.
Neha Sharma
Hyderabad
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MBBR Bio Media ka price market competitive hai aur quality high.
Rajiv Kumar
Gujarat
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Maine unka Filter Press for Sludge Dewatering liya, full value for money hai.
Tina Arora
Delhi
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Inke Diffusers in STP reliable hai, paani ka treatment hassle free ho jata hai.
Mohammed Asif
Kolkata
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Tube Deck Settler ka design compact hai aur space saving solution diya.
Yogesh Patel
Rajkot
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Vasu Pharmatech se liya hua MBBR Water Treatment Media durable aur effective hai.
Suraj Jain
Surat
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FAB Media aur Diffusers ka combination inhone suggest kiya, result best mila.
Anand Krishnan
Bangalore
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Vasu Pharmatech supplied us MBBR Media for our STP, and the performance has been excellent.
Kiran Thapa
Siliguri
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Their Tube Settler Media is durable, easy to install, and very effective in wastewater treatment.
Aarti Verma
Delhi
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The Filter Press Machine from Vasu Pharmatech is reliable and works perfectly for sludge dewatering.
Mahesh Yadav
Haryana
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Their FAB Reactor system is compact and provides excellent biological treatment.
Ritika Sharma
Pune
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Verified Purchase
We received PVC Tube Settler Media, and the quality exceeded our expectations.
Saurabh Goyal
Jaipur
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The Automatic Filter Press has saved us both time and manpower – very satisfied.
Divya Nair
Kochi
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Verified Purchase
Their Coarse Bubble Diffusers work well for wastewater aeration, giving consistent results.
Pankaj Mishra
Delhi
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Verified Purchase
The Tubular Diffusers are strong, efficient, and delivered on time.
Ramesh Bhatt
Uttarakhand
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Verified Purchase
Vasu Pharmatech provided us with EPDM Fine Bubble Disc Diffusers, and the oxygen transfer rate is outstanding.
Harshita Soni
Noida
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Their MBBR Bio Media is competitively priced yet offers premium performance.
Anwar Hussain
Ahmedabad
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The Hydraulic Filter Press is designed very well and easy to operate.
Shweta Aggarwal
Ludhiana
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Verified Purchase
For Tube Deck Media, Vasu Pharmatech is one of the most reliable suppliers we have worked with.
Akhil Nair
Bangalore
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Verified Purchase
Their Disc Diffuser Aerators are durable and perfectly suited for our STP application.
Manjeet Kaur
Punjab
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Vasu Pharmatech products are cost-effective, reliable, and perfect for water treatment projects.
Ajay Verma
Delhi
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Verified Purchase
Vasu Pharmatech ka MBBR Media liya, paani ka treatment smooth ho gaya aur maintenance bhi easy hai. Tube Settler aur Diffuser ka combination STP me highly efficient sabit hua.
Kunal Sharma
Delhi
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We bought MBBR Media and Tube Settler from Vasu Pharmatech for our STP. The quality is excellent, installation simple, and treatment performance outstanding.
★★★★★ 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
