This visualization/animation shows the cleaning of a pond which is contaminated with nitrate.
The mud from the pond is removed from the ground via a robot and pumped to the collection point.
At the collection point, the sludge dries out and can be used as fertilizer.
Modeled, textured, rigged and animated in Blender as usual :)
https://www.blender.org/download
Location on Google Maps:
https://goo.gl/EqmkZF