The ornamental design for a rectangular wastewaterpurifyingdevice, as shown and described.
FIG. 1 is a top perspective of a rectangular waste water purifying device embodying a first embodiment of our design;
FIG. 2 is a top view of the rectangular waste water purifying device shown in FIG. 1;
FIG. 3 is a bottom view of the rectangular waste water purifying device shown in FIGS. 1 and 2;
FIG. 4 is a front elevation of the rectangular waste water purifying device shown in FIGS. 1-3, with the opposite rear elevation being a mirror image thereof;
FIG. 5 is a side elevation of the rectangular waste water purifying device shown in FIGS. 1-4, with the opposite side elevation being a mirror image thereof;
FIG. 6 is a top perspective of a rectangular waste water purifying device embodying a second embodiment of our design;
FIG. 7 is a top view of the rectangular waste water purifying device shown in FIG. 6;
FIG. 8 is a bottom view of the rectangular waste water purifying device shown in FIGS. 6 and 7;
FIG. 9 is a front elevation of the rectangular waste water purifying device shown in FIGS. 6-8, with the opposite rear elevation being a mirror image thereof; and,
FIG. 10 is a side elevation of the rectangular waste water purifying device shown in FIGS. 6-9, with the opposite side elevation being a mirror image thereof.