In a waste water treatment system having a waste water storage tank and a fluid contaminant discharge means, an apparatus for separating contaminated waste water into a substantially uncontaminated homogeneous extract water portion and into a heterogeneous raffinate fluid portion, with said raffinate fluid portion having a lower specific gravity than said extract water portion, said apparatus comprising:
- an elongated housing means placed between said waste water storage tank and said fluid contaminant discharge means, and having a top portion, a bottom portion disposed below said top portion, and first and second lateral wall portions disposed medially and perpendicularly of said top potion and said bottom portion;
- an inlet means disposed upon said first lateral wall portion of said elongated housing means, for receiving said contaminated waste water from said waste water storage tank into a separation region;
- outlet means disposed upon said second lateral wall portion of said elongated housing means, for delivering said raffinate fluid portion to said fluid contaminant discharge means;
- first heating means disposed upon said second lateral wall portion of said elongated housing means, for heating said waste water and said raffinate portion to promote flow and to prevent solidification thereof;
- a separator chamber means contained within said elongated housing means and having a centrifugation means and said separation region therein;
- said centrifugation means including longitudinal plate means having a partially frustoconically-shaped convex surface facing said first lateral wall portion and said separation region with a vertex end facing said bottom portion and an opposite base end facing said top portion, for causing circular turbulent flow of said contaminated waste water thereabout;
- said longitudinal plate means of said partially frustoconically-shaped surface of said centrifugation means disposed obliquely relative to said first lateral wall portion of said elongated housing means and having a longitudinal axis;
- said centrifugation means further having an impact plate means disposed oppositely of said longitudinal plate means and facing an extract collection region, for interrupting said circular turbulent flow of said contaminated waste water;
- a first baffle plate means disposed perpendicularly to said longitudinal axis of said longitudinal plate means and disposed adjacent said vertex end of said partially frustoconically-shaped surface of said centrifugation means and projecting into said separation region, for controlling the gravitation rate of said extract portion from said contaminated waste water as said extraction portion gravitates from said separation region to an extract sump region disposed upon said bottom portion of said housing means;
- a first discharge means disposed upon said bottom portion of said elongated housing means, for draining said extract portion from said extract sump region;
- an extract collection region bounded by said second lateral wall portion of said elongated housing means and said impact plate means, and disposed contiguously with said extract sump region, for accumulating said separated extract portion;
- a raffinate collection region bounded by said top portion and said first and second lateral wall portions of said elongated housing means, for receiving said raffinate portion from said separation region and for delivering said raffinate portion to said outlet means;
- a second baffle plate means disposed parallel to and along said longitudinal axis of said longitudinal plate means and disposed adjacent said impact plate means and said top portion, for preventing admixing of said raffinate portion contained in said raffinate collection region with said extract portion contained in said extract collection region;
- a third baffle plate means disposed parallel to and along said longitudinal axis of said longitudinal plate means and disposed adjacent said impact plate means and said bottom portion, for controlling the rate of flow of said extract portion from said extract sump region to said extract collection region;
- sensor means disposed upon said second lateral wall portion disposed medially of said outlet means and said discharge means, for sensing the level of said extract portion accumulating in said extract collection region;
- a fourth baffle plate means disposed perpendicularly to said longitudinal axis of said longitudinal plate means and disposed adjacent said base end of said partially frustoconically-shaped surface of said centrifugation means, for controlling the flow of said contaminated waste water from said separation region to said raffinate collection region;
- second heating means disposed proximal to said extract sump region of said elongated housing means, for further heating said waste water and said raffinate potion to promote flow and to prevent solidification thereof;
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- tube means interconnecting said extract sump region with a second discharge means disposed upon said top portion of said elongated housing means, for draining said extract portion from said extract sump region.