By way of further explanation of the first aspect of the invention, exemplary embodiments of the invention will now be described with reference, to the accompanying drawings, in which: FIG. 1 is a diagrammatic cross-sectioned side view of a system for treating wastewater that embodies the invention.
FIG. 2 is a pictorial view of a body of foam material, which is a component of the system of FIG. 1.
FIG. 3 is a close-up of a portion of FIG. 1.
FIG. 4 is a plan view of the treatment system of FIG. 1.
FIG. 5a is a diagrammatic cross-sectioned view of a pipe containing a body of treatment material.
FIG. 5b is the same, view as FIG. 5a, but shows a different condition.
FIGS. 6a,6b correspond to FIGS. 5a,5b9 but show a different treatment material.
FIG. 7 is an end view of another system for treating wastewater that embodies the invention.
FIG. 8 is a cross-sectioned side-view of the system of FIG. 7.
FIG. 9 is an end view, like FIG. 7 of another system that embodies the invent ion.
FIG. 9a is a cross-sectioned side-view of the system of FIG. 9.
FIG. 10 is a pictorial view of another system that embodies the invention.
FIG. 16 is a pictorial view of another system that embodies the invention.
The systems shown in the accompanying drawings and described below are examples which embody the invention. It should be noted that the scope of the invention is defined by the accompanying claims, and not necessarily by specific features of exemplary embodiments.
In FIG. 1, the pipe 20 has a length of about fifteen meters, and a diameter (internally) of about twenty-five centimeters. The pipe 20 is made of a plastic (polyethylene, PVC, etc) material that is inert as far as wastewater and the pollutants commonly found in wastewater are concerned.