SS
Series Plenum Coarse Bubble Diffusers
The
SS Series Plenum Coarse Bubble Diffuser is designed for use in applications
which require the delivery of higher CFM rates. Simplicity of design
also makes the SS Series diffuser a cost effective alternative to
other forms of coarse bubble diffusion. Its unitized design and construction
has no moving parts to wear out or shake loose. These design and operational
features assure trouble-free operation. The operating principle of
the SS Series Plenum Diffuser is simple. It is a basic rectangular
chamber with parallel groups of orifices of two different diameters
located on both sides of it. |
The
holes are defined on three horizontal planes located lengthwise
on the sides of the diffuser plenum. Gas is introduced to the plenum
chamber from one end and fills it to the point where is displacing
the water it assures the measured flow of gas from the orifices
located in the walls of the diffuser. The volume of gas pressure
which is supplied through the diffuser over the head pressure created
by the fill level in the tank determines how many planes of the
orifices are utilized to produce bubbles. Slight variations in the
Delta”P” (loss of head) between the interior and the exterior plenum
chamber determine the quantity of gas bubble created for gas transfer.
The higher the gas volume, the
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The SS Series Plenum Diffuser has no moving parts to wear out or
shake loose.
It can deliver gas flows up to 50 CFM making it suitable for numerous
applications.
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greater
the number of orifices which are used in the diffuser. When higher numbers
of orifices are used it results in a higher degree of the gas transfer
taking place. The lower the volume of gas flow results in fewer horizontal
groups of orifices being used with subsequently lower oxygen transfer
taking place. Regardless of the flow rate used, the distribution of the
gas from any given plane of orifices is even and consistent. Since the
SS Series diffuser has a rectangular shape, the mass of coarse air bubbles
being produced form a curtain. The SS Series Plenum Coarse Bubble Diffuser
can deliver gas flows up to CFM making them suitable for numerous applications.
The construction of the SS Series Plenum Diffuser is comprised of a formed
304 L or 316L stainless steel body with a cast end plate with a threaded
fitting. The cast fitting end plate provides rigid support and vibration
resistant strength for the unit. The diffuser chamber features an open
bottom allowing solids to settle out thus preventing them from becoming
entrapped in the diffuser. Entrapped solids have the potential of fouling
the diffuser or wearing it out prematurely due to an abrasive scouring
action which would take place. Costly plant shut downs for diffuser cleaning
are unnecessary. Progressive pressure build up due to clogging of the
diffuser and the accompanying energy increases from restricted air flow
is eliminated. Mounting of the diffuser is made simple with 3/4” NPT male
threads. The diffusers are easy to install in new and retrofit applications.
Typical applications for the SS Series Plenum Coarse Bubble Diffuser include:
- aeration
tank
- post-aeration
tanks
- digesters
- channels
- nitrification
tanks
- grit
tanks lagoons
- VDR
(variable depth reactor)
- sludge
conditionina tanks
- SBR
(sequencing batch reactor)
- diffusion
of scrubber gases
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