Liquid purification or separation – Processes – Treatment by living organism
Patent
1992-05-11
1993-08-03
Hart, Charles
Liquid purification or separation
Processes
Treatment by living organism
210807, 210290, 210406, C02F 300
Patent
active
052325997
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.
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Constant Richard E.
Dixon Harold M.
Hart Charles
Moser William R.
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