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The ornamental design for the waste water treatment tank, as shown. |
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FIG. 1 is a perspective view of the waste water treatment tank.
FIG. 2 is a top view of the waste water treatment tank of FIG. 1.
FIG. 3 is a first side view of the waste water treatment tank of the present invention.
FIG. 4 is a second side perspective view of waste water treatment tank of FIG. 1.
FIG. 5 is a bottom perspective view of waste water treatment tank of FIG. 1; and,
FIG. 6 is a third side perspective view of the waste water treatment tank of FIG. 1.
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