What causes foam in aqueous systems like desalination plants?
Foam formation in seawater is typically caused by naturally occurring surfactants generated from:
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Algae and plankton
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Organic decomposition products
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Hydrocarbon contamination
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Biological activity
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Turbulent mixing and aeration
Quick foam knockdown plus extended foam prevention properties in RXSOL Antifoam AF10
|
Parameter |
Performance |
|
Foam Knockdown Speed |
Excellent |
|
Foam Suppression Duration |
Excellent |
|
Seawater Compatibility |
Excellent |
|
Non-Silicone Performance |
Excellent |
|
Residue Formation |
Very Low |
|
Membrane Compatibility |
Good |
|
Continuous Dosing Suitability |
Excellent |
How to effective knockdown foaming in waste water systems, produced water systems in oil and gas:
A. Direct Addition
Add the required quantity directly into the process tank.
Recommended for:
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Batch processes
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Cleaning tanks
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Wastewater tanks
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Reaction vessels
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Mixing vessels
Allow sufficient circulation/agitation for uniform distribution.
B. Metering Pump
For continuous foam control, RXSOL Organic Antifoam can be injected using a metering pump.
Typical starting point:
10-100 ppm continuously
The dosage should be adjusted according to foam generation.
C. Shock Dosing
For an already established foam layer:
-
Stop or reduce the foam-generating operation if possible.
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Apply a small quantity of antifoam directly onto the foam.
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Allow approximately 1–5 minutes for foam collapse.
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Restart circulation/aeration.
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Establish a lower continuous maintenance dose if required.