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Sanitaire Silver Series II membrane disc diffusers

  Overview Specifications Solutions Documentation & Tools  
Overview

Overview

Product Features
  • Ideal for air-on/air-off applications such as SBRs, aerobic digesters, and anoxic swing zones, as well as continuous operation
  • Over 22 million diffusers installed in municipal and industrial applications worldwide
  • Higher sustained efficiencies verified through 3rd party testing
  • Advanced membrane perforation technique creates extremely fine, uniform bubble pattern for optimal oxygen transfer
  • Low maintenance and long service life of 10+ years

Delivering years of proven performance

Xylem's Sanitaire Silver Series II membrane disc diffusers feature a unique split pattern and slit shapes, which disperse air bubbles in an extremely fine and uniform pattern for high oxygen transfer efficiency. The specially-blended, high grade EPDM elastomer compounds resist degradation that’s common to other membranes, and delivers over 10 years of proven performance.

Lower energy consumption and raised operating efficiencies are made possible by the unique membrane shape, integrated O-ring, and top-sealing threaded retainer ring, which eliminates leakage.  A highly effective, integrated check valve enables the aeration zones to be easily shut down for air-on/air-off applications.

Sanitaire patented pipe joints are designed to withstand thermal expansion and contraction, water hammer and other dynamic stresses, while pipe supports allow infinite height adjustment for accurate grid leveling. Spline joint design makes it easy to install and eliminates the risk for installation errors for contractors. Piping and other elements of the Silver Series II system are fully interchangeable with Sanitaire ceramic disc systems.

Specifications

Specifications

General Information Silver Series II membrane disc diffusers
Standards ASCE, ATV, ISO, ASTM, ASME
Applications Conventional Activated Sludge, MBR, SBR, Oxidation Ditches, Channel Aeration
Air on / air off operation Yes
Shop oxygen transfer test Available
Performance warranties Yes
Fixed to floor systems Yes
Retrievable (liftable) design available Yes
System Components Silver Series II membrane disc diffusers
Droplegs 304 SS, 316 SS
Manifold uPVC, cPVC
Distribution header uPVC
Supports 304 SS, 316 SS
Liquid purge system Manual or Automatic Available
Disc diffusers uPVC, EPDM
Controls (optional) OSCAR process performance optimizer
Blowers (optional) Positive displacement or centrifugal
SaniClean liquid cleaning system (optional) Safe diffuser DWP recovery system
Diffuser Properties Silver Series II membrane disc diffusers
Diffuser types (mm) Saddle and Screw-on - 178 mm and 229mm
Diffuser types (inches) Saddle and Screw-on - 7" and 9"
Typical operating air flow range per diffuser 0.5 to 4.0 scfm (0.8 to 6.8 Nm3/h)
Typical standard oxygen transfer efficiency (SOTE) 6-8% per m submergence (2-2.5% per ft submergence)
Typical standard aeration efficiency 2.5-6 kg O2 / kWh (4-10 lb O2/hph)
Special features Membrane slit pattern that improves oxygen transfer efficiency
Integrated check-valve Yes
Diffuser membrane material Proprietary Sanitaire Blend EPDM
Diffuser holder material uPVC and cPVC
Effective surface area 7" = 0.26 ft2 (0.024 m2) , 9" = 0.41 ft2 (0.038 m2)
Orifice size 0.2 in (5 mm)
Solutions

Solutions

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Documentation & Tools

Documentation & Tools