Our disc diffusers with compression molded membranes.

Standard materials are EPDM and fluoroelastomer layered EPDM. Compression

molding ensures that we produce a part with even specific gravity and uniform

tear resistance. Other molding techniques such as injection molding produce

similar looking parts, but the tear resistance of a compression molded part is

multidirectional, whereas the tear

resistance of an injection moldedpart tends to be unidirectional just like wood which has a grain.

There is an art to using just the right amount of plasticizer in anEPDM membrane. Use too much,      

or the wrong type, and emulsifying fats can leech plasticizer and cause shrinkage and

increase hardness. Use too little, and the rubber loses its memory, bubble size increases,and

the membrane is at risk for flexure failure. we has had a great deal ofexperience experimenting with

different types and amounts of plasticizer, as well as other components of formulated EPDM rubber,

such as fillers and curatives, and we put this experience to work.

Membrane perforation and surface charge are additional considerations.

We perforates disc membranes from the inside out with specially shaped knives.

This results in the smallest part of the perforation on the membrane surface

where the bubble is released. Through proprietary compounding and surface

treatments, we are able to create a smooth perforation on a hydrophilic surface

which quickly releases small bubbles, typically from 1 to 2 mm in diameter.

SSI uses environmentally friendly materials whenever possible. Our disc diffuser

parts are predominantly made of polypropylene, which offers the added

benefit of high temperature resistance to **2 F (**0C)

Following are the Applications of disc diffusers

Activated sludge wastewater aeration

Equalization basin mixing / aeration

Industrial wastewater treatment

Oxygenation for sludge stabilization

Aeration of pond and streams

Others

Standard 9" Disc - AF**0

Design Flow: 1.**3.0 SCFM

(2.**5.0 Nm3/hr)

Flow Range: **7 SCFM

(***2 Nm3/hr)

Slit Quantity: 6,**0