Process for separating solids from liquid matter

Details Process for separating solids from liquid matter Process for separating solids from liquid matter

1980-05-28

1981-09-15

Cintins, Ivars C.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210705, 210804, B01D 2304

Patent

active

042896282

ABSTRACT:
The invention relates to a process for separating solids from liquid matter by means of gravity, using a three-dimensional filter element and an alluvial filter layer wherein a gas is fed into the medium to be treated prior to its introduction into the filter element in the form of fine or finest bubbles which accumulate on the solid particles. The particles loaded with air floated up rapidly to the upper level of the column of liquid in the filter element, forming a layer of sludge. Said layer built up continuously an alluvial filter layer at the internal surface of the water-permeable supporting filter element from the bottom upwards along the wall relative to the rising level of the liquid in the filter element. The process, realized in the presence or absence of flocculating agents, results in a higher separation degree with regard to the solids content as well as an increased elimination of the biological oxygen demand.

REFERENCES:
patent: 3977970 (1976-08-01), Willis et al.

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