Patent ID: 7943051
Filing Date: 2011-05-17
Classification: B01D

Abstract:
1. A method of dewatering slurry, comprising the steps of: providing a portable, open-top container having a bottom and four sides; covering the bottom and four sides of the container with a disposable watertight liner; covering the bottom of the liner with coarse granular material having interstitial space therein; layering a filter cloth over the coarse granular material and the liner; providing a drain port through the liner and into the interstitial space; pumping slurry containing particulate into one end of the container through the open top, whereby settlement produces relatively clean water at the top of the container and settled particulate at the bottom, and filtering through the filter cloth produces a filtrate in the interstitial space; using a means for reducing water in the slurry while substantially avoiding clogging of the filter cloth, whereby room is provided for the cyclical addition of more slurry; draining any remaining filtrate through the drain port; transporting the container and its residual contents to a disposal site; and discarding the liner, coarse granular material, filter cloth and residue by dumping the contents to leave the container in its original state.