Disc Diffusers

Disc Diffusers: Efficient Aeration for Wastewater Treatment and Industrial Applications

Disc diffusers are essential components in aeration systems, designed to efficiently introduce oxygen into water for various treatment processes. They are widely used in wastewater treatment plants, industrial processes, and environmental applications due to their ability to improve oxygen transfer efficiency while minimizing energy consumption. With advanced membrane materials and precise perforation designs, disc diffusers play a crucial role in optimizing aeration performance and ensuring reliable operation.

Key Features of Disc Diffusers

1. High Oxygen Transfer Efficiency

Disc diffusers produce fine bubbles (1-1.25 mm in size), which enhance the Standard Oxygen Transfer Efficiency (SOTE). This results in better oxygen dispersion, leading to improved biological treatment and reduced power consumption.

2. Durable and Robust Design

• Constructed with a glass fiber-reinforced polypropylene (PPGF) body, ensuring high strength and resistance to chemicals, UV radiation, and temperature fluctuations.
• Features a double-locking membrane system, preventing detachment even at high airflow rates.

3. Versatile Flow Rate and Depth Compatibility

• Available in different sizes, including 7", 9", and 12" diameters, allowing for customized aeration solutions.
• Can operate at depths of up to 8 meters, making them suitable for deep tank aeration.
• Designed for high flow rates, with 9” diffusers handling up to 5 m³/hr and 12” diffusers managing up to 8 m³/hr.

4. Advanced Membrane Materials

Disc diffusers come with different membrane options tailored for specific applications:

• EPDM: Best suited for municipal wastewater treatment.
• Low Plasticizer EPDM: Ideal for food, beverage, and animal processing industries.
• Silicone: Suitable for chemical, petrochemical, pulp, and paper industries.
• Nano-Coated Membranes: Prevent biological buildup and fouling, reducing maintenance requirements.

5. Easy Installation and Compatibility

• Compatible with various pipe sizes, including 3-inch and 4-inch IPS pipes and metric pipes (90mm & 110mm) made of materials like PVC, CPVC, PP, and ABS.
• Connection options include EPDM rubber grommets, glue-on PVC saddles, and Jäger's unique rubber saddle for secure pipeline attachment.
• Optional non-return valve prevents sludge backflow into the pipeline, even in case of membrane damage.

Popular Models of Disc Diffusers

1. Standard Disc Diffusers

• Cost-effective and widely used in wastewater treatment.
• Precision die-cut perforations for optimized oxygen transfer.
• Available in multiple sizes with varying slit patterns for customized aeration.

2. JetFlex® HD-Series Disc Diffusers

• Designed for both intermittent and continuous aeration processes.
• Offers retrofit kits and replacement membranes to enhance the efficiency of existing systems.
• Available in 7", 9", and 12" sizes with EPDM and silicone membranes for diverse applications.

Applications of Disc Diffusers

1. Wastewater Treatment

• Municipal wastewater treatment plants rely on disc diffusers for aeration in activated sludge systems to support microbial degradation of pollutants.
• Industrial wastewater treatment facilities use them for biological oxygen demand (BOD) and chemical oxygen demand (COD) reduction.

2. Sludge Stabilization

• Enhances aerobic digestion processes by supplying oxygen to break down organic matter in sludge.

3. Aeration of Rivers and Lakes

• Used in environmental restoration projects to improve dissolved oxygen levels in stagnant water bodies, reducing eutrophication.

4. Biogas Plant Operations

• Facilitates the pre-treatment of concentrate and leachate from biogas production processes, improving overall system efficiency.

5. Industrial Applications

• Pulp and Paper Industry: Ensures proper aeration in wastewater generated from paper production.
• Petrochemical & Refining: Used in ozone aeration for water treatment and neutralization processes.
• Food & Beverage Industry: Helps manage oxygen transfer in effluent treatment systems.

6. CO₂ Fumigation & Ozone Aeration

• Used in neutralization processes by aerating CO₂ into water to control pH levels.
• Ozone aeration applications help in advanced oxidation processes for treating contaminated water.

Disc diffusers are a critical component of aeration systems, offering high efficiency, durability, and versatility across various industries. With advanced membrane materials, customizable designs, and easy installation options, they ensure optimal oxygen transfer for wastewater treatment, industrial applications, and environmental restoration. Whether for municipal treatment plants or specialized industrial processes, disc diffusers provide a cost-effective and reliable solution for aeration needs.