| 摘要 |
Improved control for the separation of waste materials, or materials having waste components, is provided by the injection of air, or other gas bubbles, into a water-filled tank while simultaneously depositing the waste containing material to be separated onto the top of the water. This method is especially useful where both portions of some or all of the materials to be separated from each other have specific gravities greater than that of pure water. The rapidly rising air bubbles provide turbulence and buoyancy to materials that are slightly heavier than water, such as water-soaked organic products, but do not prevent heavier materials, such as sand and metals from sinking. An apparatus is described which allows for the removal of both the floating and sinking fractions from the floatation tank. The cleaner separation provided by this method increase the value of both fractions for a variety of beneficial uses including manufactured products, a renewable-resource fuel which will reduce the generation of greenhouse gases, chemical product feedstock and compost.
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