Clifford A Cole

US Patent:

52325997, Aug 3, 1993

Filed:

May 11, 1992

Appl. No.:

7/884313

Inventors:

Clifford M. Cole - Aiken SC

International Classification:

C02F 300

US Classification:

210609

Abstract:

A device and method for preparing sludge for disposal comprising a box with a thin layer of gravel on the bottom and a thin layer of sand on the gravel layer, an array of perforated piping deployed throughout the gravel layer, and a sump in the gravel layer below the perforated piping array. Standpipes connect the array and sump to an external ion exchanger/fine particulate filter and a pump. Sludge is deposited on the sand layer and dewatered using a pump connected to the piping array, topping up with more sludge as the aqueous component of the sludge is extracted. When the box is full and the free standing water content of the sludge is acceptable, the standpipes are cut and sealed and the lid secured to the box.