The ornamental design for a wastewatertreatmentsystem, as shown and described.
FIG. 1 is a top isometric view of a wastewater treatment system showing our new design.
FIG. 2 is a bottom isometric view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a right side elevational view thereof.
FIG. 5 is a left side elevational view thereof.
FIG. 6 is a rear elevational view thereof.
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines in the drawings illustrate portions of the wastewater treatment system which form no part of the claimed design. The dash-dot broken lines define the bounds of the claim and form no part of the claimed design.
Similarly, while the solid lines in the drawings form part of the claimed design, the solid lines provide written description of prospective embodiments with aspects that are not claimed when one or more of the solid lines are amended to broken lines.