Protein skimming or foam fractionation is the process by which dissolved and particulate organic carbons are removed from a liquid, in this case the fish culture water, by adsorbing them onto the surface of fine bubbles rising in a closed contact column.
The bubbles form stable foam at the top of the water column and the accumulated organic wastes are discharged from the column along with the foam produced.
The removed substances are called "surfactants" because they are surface active or "charged"
Improved technology has made it possible to skim off harmful protein compounds.
Airmaster protein skimmers are specially developed for these applications making them the ideal protein skimmer for your waste water cleaning requirements.
These skimmers remove proteins before they decompose to toxic compounds, they reduce turbidity and typically the water will be deodorised as well.
Benefits of Protein Skimming include:-
* Removal of suspended solids.
* Removal of proteins and high molecular weight compounds.
* Increased water clarity through removal of humic and
* Increased oxygenation of the culture water.
* pH stabilisation through removal of organic acids.
* Performance is dependant on:
* Air to water ratio
* Air bubble diameter
* Column height
* Air/water contact time
* Use of ozone
Solids characteristics of foam condensate collected from re-circulation aquaculture systems by a foam fractionator were investigated. Particle sizes were analysed with a particle counter. Foam fractionation removed suspended particles as well as dissolved solids. The majority of the solids removed by foam fractionation were organic. Most of the suspended particles removed were smaller than 30 microns in diameter.