Silver Series II membrane disc diffusers

Overview Specifications Industries & Applications 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
Standards
Applications
Air on / air off operation
Shop oxygen transfer test
Performance warranties
Fixed to floor systems
Retrievable (liftable) design available
Silver Series II membrane disc diffusers
ASCE, ATV, ISO, ASTM, ASME
Conventional Activated Sludge, MBR, SBR, Oxidation Ditches, Channel Aeration
Yes
Available
Yes
Yes
Yes
System Components
Droplegs
Manifold
Distribution header
Supports
Liquid purge system
Disc diffusers
Controls (optional)
Blowers (optional)
SaniClean liquid cleaning system (optional)
Silver Series II membrane disc diffusers
304 SS, 316 SS
uPVC, cPVC
uPVC
304 SS, 316 SS
Manual or Automatic Available
uPVC, EPDM
OSCAR process performance optimizer
Positive displacement or centrifugal
Safe diffuser DWP recovery system
Diffuser Properties
Diffuser types (mm)
Diffuser types (inches)
Typical operating air flow range per diffuser
Typical standard oxygen transfer efficiency (SOTE)
Typical standard aeration efficiency
Special features
Integrated check-valve
Diffuser membrane material
Diffuser holder material
Effective surface area
Orifice size
Silver Series II membrane disc diffusers
Saddle and Screw-on - 178 mm and 229mm
Saddle and Screw-on - 7" and 9"
0.5 scfm to 7 scfm (0.8 Nm3/h to 10 Nm3/h)
6-8% per m submergence (2-2.5% per ft submergence)
2.5-6 kg O2 / kWh (5-12 lb O2 / hph)
Membrane slit pattern that improves oxygen transfer efficiency
Yes
Proprietary Sanitaire Blend EPDM
uPVC and Polypropelene
7" = 0.26 ft2 (0.024 m2) , 9" = 0.41 ft2 (0.038 m2)
5.3mm or 6.1mm
Industries & Applications

Industries & Applications

Recommended Industries and Applications

Wastewater Systems
Building Systems Wastewater Systems
Documentation & Tools