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Disc Diffuser Solutions for High-Efficiency Aeration - Nihaowater

As a professional manufacturer, we provide integrated disc diffuser solutions including a full range of 8" - 12" sizes. Beyond supplying premium EPDM membranes, we offer full technical support and aeration system design services.

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  • RAS system of wastewater treatment factory
  • Fish farming, shrimp pond and any aquaculture
  • Pulp and paper industry for sewage treatment
  • Food Beverage and drink wastewater secondary treatment
  • Coke Steel Plant
  • Sewage treatment plant
  • Wastewater treatment
  • Dairy Industry, Auto industry and Chemical industry
  • Chemical wastewater disposal
  • Integrated Container A²O
  • Dyeing Wastewater treatment
  • Wastewater treatment system
  • Urban sewage treatment
  • Municipal Wastewater Treatment secondary treatment

Full Range Specifications: 8" - 12" Disc Diffusers

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Comprehensive Technical Performance Data

Item number DD215(9") DD270(10") DD350(12")
Bubble type Fine Bubble Fine Bubble Fine Bubble
Membrane Material Formula EPDM From Laxess Germany
Carrier Plate Formula Strengthen ABS
Connector 3/4"NPT Male thread
Bubble size(mm) 1.0-2.0 1.0-2.0 1.0-2.0
Design Flow(m³/h) 1.5-2.5 3.0-4.0 5.0-6.0
Flow Range(m³/h) 1.0-5 1.5-8.0 2-12
Standard Oxygen Transfer Efficiency (6m submerged) ≥38% ≥38% ≥38%
Service Area(㎡) 0.2-0.64 0.25-1.0 0.4-1.5
Service Life(years) 3 to7 3 to7 3 to7
Number of perforations(Pcs) 4400 6600 11440
Thickness of membrane(mm) 2±0.1 2±0.1 2±0.1
Use of Temperature(℃) 0-80 0-80 0-80
Item Number Threaded Interface Remark
DD215 3/4
DD270 3/4
DD350 3/4

Fine Bubble DISC DIFFUSER

  • Applicable Scope:

    Municipal sewage and industrial sewage can also be used for the restoration and management of lakes and rivers and aquaculture.

  • Aeration Diaphragm:

    EPDM silica gel

  • Diaphragm Thickness:

    1.8±0.1mm

  • Lined Pipe:

    PP-TV

  • Size Specifications:

    Ø215/Ø270/Ø350

  • Thread Standard:

    The standard size is DN20 and DN25; other specifications of thread standards can also be customized according to actual needs.

    • Disc Diffuser for wastewater treatment

    When you design aerobic tank, anaerobic tank, primary, secondary, tertiary sewage/water treatment process, the above parameter can be used. If you need more information and Technical support, Please contact our experts.

    Nihao Disc diffuser

    EPDM Fine Bubble Diffuser

    TPU Fine Bubble Diffuser

    PTFE Fine Bubble Diffuser

    Silicone Fine Bubble Diffuser

    Membrane Material

    Formula EPDM or Silicon/PTFE coated EPDM

    Thermoplastic Polyurethane

    PTFE, Coated scale inhibitor film

    Silicone rubber,Extremely elastic

    Carrier Plate

    Acrylonitrile-Butadiene-Styrene with UV Protector (ABS)

    Formula Strengthen ABS Material

    Formula Strengthen ABS Material

    Formula Strengthen ABS Material

    Features

    Wide range of applications,suitable for most situations

    High elasticity, Weather resistance, Corrosion resistance

    Corrosion resistant Heat resistant

    Nider temperature adaptibilit Stable bubble generation

    Comparison video of other brands

    Advanced Membrane Technology: Premium EPDM from Lanxess Germany

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    • The peroxy system forms carbon-carbon crosslinks, which have short crosslinks, high rigidity, high stability, and low compression set, and high resilience, but also have the disadvantages of low tear strength and elongation.

    • The double peroxycuring system improves tear strength and elongation.

      DMS company controllable long chain branching technology EPDM.

      Exxon Molecular Weight "Bimodal" Distribution EPDM Original Gum.

    The increase in strength makes it possible to increase the number of pores per unit area.

    Increase the number of holes to: 25-30 holes/cm2 compare to 20holes/cm2 of other suppliers.

    Tubular aeration membrane, 32,000 holes/m, most other suppliers just only 28000 holes.

    The pores are 30% smaller, and the ventilation resistance is also 20% smaller.

    Improves tear strength and elongation.

    Specifications Nihao Disc diffuser Number of holes China Other supplier
    DD215 6400 5600
    DD270 3400 2800
    DD350 8700 6500

    TECHNICAL DATA SHEET:

    Project Unit Parameter
    Tensile Strength MPa ≥14
    Break Elongation % ≥650
    Ozone aging factor 100ppm, after 72H No cracks
    Tear strength N/m ≥1.9×104
    Hardness Shao A 55±5
    Permanent Compression Set 100% Elongation after 24H % ＜5
    Elasticity % ≥40
    Water resistance Tap water 168H weight gain % ＜1.5
    Water resistance Tap water 168H volume change % ＜3
    Acid resistance coefficient 28%H2SO4×24H % 1.0
    Alkali resistance coefficient 38%NaOH×24H % 0.9
    Oil resistance coefficient 1# % 1.8
    Standard oil at room temperature
    In order to make the EPDM film have high elasticity and good tear resistance, we use EPDM with a "bimodal" molecular weight distribution. EPDM with a "bimodal" molecular weight distribution has both high molecular weight polymer mechanical properties and EPDM with low molecular weight polymer processing performance, combined with EPDM with controlled long-chain branching, balances the properties of the polymer well. So that EPDM has good tear resistance while having high strength and high resilience.

    Why Leading Engineers Choose Nihao Aeration Systems ?

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    With 10 years of R&D, NIHAO’s exclusive EPDM formula extends disc diffuser life by 3–5 years, offering superior elasticity and resistance.
    Beyond high-performance hardware, we provide tailored technical support. Contact our engineer Kate to solve your specific aeration challenges or request a customized solution designed specifically for your project..
    HIGH QUALITY MATERIAL IMPORT FROM USA

    High Quality Material Import From USA

    Import High-quality EDPM 8600 from Exxon Mobil USA

    High-quality Carbon which from Cabot from USA

    FIRST CLASS PRODUCTION EQUIPMENT

    First Class Production Equipment

    The only disc diffuser factory in China that use Robot Arm. We introduced 100% brand new high-tech automated production equipment, all the goods are filled in and pick out by Robot arm, which makes the speed and plasticizer time more precise, control the quality better than by hand.

    Clean Production Environment

    Clean Production Environment

    Neat & Clear Workshop.

    All the material, half-finished, finished goods are kept in containers, not on the floor to keep well in order.

    Special Material Formula Design

    Special Material Formula Design

    Unique Material Anti-blocking Design: No hole clogging risk for 8 years Bimodal Molecular Weight EPDM Original Gum: Reduced Ventilation Resistance 20% Platinum Hydrosilylation Reaction Sulfurization: Tear strength increased to above35KN/M Oil-free Formula Design: 5-year elastic decay＜20% rate

    ADVANTAGE

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    • Bimodal Molecular Weight EPDM Original Gum

      Reduced Ventilation Resistance 20%
      Using EPDM with "bimodal" molecular weight distribution, EPDM with "bimodal" molecular weight distribution, and EPDM with controlled long-chain branching, EPDM has a good tear resistance while having high strength and high resilience. Compared with similar products, the ventilation resistance is reduced by 20% when the thickness and the aperture is the same.

    • Unique Material Anti-blocking Design

      No risk of hole plugging for 8 years
      Optimize the material formula, reduce the extraction of the rubber compound material by the sewage medium, The introduction of hydrophobic materials in the formula increases the polarity of the membrane surface, and has always achieved the purpose of reducing the adhesion of dirt.
    Fine Bubble Disc Diffuser
    1
    3
    2
    4

    • Oil-free Formula Design

      5-year elastic decay rate < 20%
      The softener will affect the vulcanization and reduce the cross-linking efficiency. At the same time, the softener will enter the macromolecular gap, affecting the formation of cross-linking bonds and reducing the cross-linking density of the cross-linking network. Therefore, the compression deformation of the cross-rubbing compound increases. Oil-free formula is adopted, 5 Annual elastic decay rate < 20%

    • Platinum Hydrosilylation Reaction Sulfurization

      Tear strength increased to above 35KN/m
      Platinum vulcanizing agent is a vulcanizing agent with metal platinum as the main active component. Compared with the traditional bis-di-tetra vulcanizing agent, the product has a smaller pressure change and higher mechanical properties.
    • Bimodal molecular weight EPDM material
    • 15% increase in the holes density
    • 10% increase in Standard oxygen transfer Efficiency (SOTE)
    • 5% reduction in operating costs
    • 8% decrease in unit energy consumption

    HOW DOES A PERFECT Fine Bubble DISC DIFFUSER COME OUT?

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    DISC DIFFUSER manufacturing
    GET PRODUCTION VIDEO CONTACT US

    Integrated Support: Professional Accessories

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    • Adhesive saddle
    • Check valve
    • Tapping clamp with different threads for various pipe diameters
    • Adapter
    • Supports for piping
    • Stainless steel clamp
    • Clamping pliers
    • Stainless steel connector for square tubes
    • End plug for floor bracket
    DISC DIFFUSER IN WASTE WATER TECHNOLOGY

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