Fractionators, often referred to as protein skimmers, work by
injecting air (or an air/ozone mix) into a contact chamber
containing system water. This process results in organic
molecules collecting on the surface of the air bubble by the
process of adsorption. These bubbles rise in the contact chamber
collecting at the surface forming a froth or a proteinaceous
fractionator process removes dissolved organic carbon down to sizes
which cannot be mechanically filtered. Use of ozone promotes micro
flocculation and electrostatic attraction, improving the removal
efficiency of organic wastes.
fractionators performance decreases at low salinities due to
decreasing foam stability as density and surface tension decrease.
Ideally they should be used at salinities of above 5 parts per
The end result is
removal of nitrogenous wastes, non bio-degradable dissolved organic
carbon and a reduction in turbidity, along with achieving O2
saturation in the returning process water.
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