Advantages
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High ejection energy resulting in a good mixing/turbulence without dead zone
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Homogeneous distribution of small bubbles to increase the exchange surface gas/liquid and then the transfer efficiency
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High operation flexibility: from 0 to 100% gas flow, constant motive water flow
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Compact system, reduced footprint
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Several arrangements: vertical, horizontal, in pipe
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Easy operation
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No risk of clogging
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Minimum maintenance
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Long lifetime
The system includes 3 elements:
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a venturi injector or mixing tube
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a motive water pump
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a radial diffuser (including a mounting ring for installation)
Radial Diffusers – Models
9 Models
Material: Stainless steel 316L or duplex SS if required
Radial Diffusers – Vertical Type (RD-V)
Radial Diffusers – Horizontal Type (RD-H)
Radial Diffusers – In Pipe Type (RD-VP)
Design of
Radial Diffuser (RD)
PARAMETERS:
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Min and Max gas flowrate
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Ozone concentration
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Gas and water temperature
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Contact chamber dimensions
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Water level
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Inlet pressure of injector (OGU design)
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Motive water flowrate
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Injector / diffuser layout
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RD model
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Gap length
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Immersion depth
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Injector discharge pressure (outlet)
1
Design of
Injector
PARAMETERS:
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Min and Max gas flowrate
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Injector suction pressure (gas inlet)
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Motive water flowrate
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Injector discharge pressure (outlet)
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Gas composition and temperature
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Motive pressure determined by the injector supplier
2
Design of
Motive Water Pump
PARAMETERS:
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Motive water flowrate
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Motive pressure needed at injector inlet and Piping headloss
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Location of pump
3
Radial Diffuser System Design Parameters
What about the mixing tube?
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Mixing tube is a pipe with several small holes to bring ozone in motive water
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Used to replace venturi injector (lower cost)
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Pressure difference between inlet and outlet mixing tube should be ≥ 0.2 bar
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That way, the gas is going in the motive water flow.
