FR2965560A1 - Filter for treatment of black liquor, comprises filter elements with composition including activated carbon, settling tank through which black liquor, polyphenols and organic phenols are introduced and then discharged through layer of sand - Google Patents

Abstract

The filter comprises filter elements having a composition including activated carbon, zeolite and/or sand, a settling tank through which the black liquor, polyphenols and organic phenols are introduced and then discharged through a layer of sand having a thickness of 50 cm, a pump connected with a second filter and third filter having same dimension of the first filter, where the particle size of the filter elements is 0.3-0.6 mm, and baffle separators are perforated with holes of 0.2 mm. The filter elements are combined together, and are placed in a container with a diameter of 2.5 m. The filter comprises filter elements having a composition including activated carbon, zeolite and/or sand, a settling tank through which the black liquor, polyphenols and organic phenols are introduced and then discharged through a layer of sand having a thickness of 50 cm, a pump connected with a second filter and third filter having same dimension of the first filter, where the particle size of the filter elements is 0.3-0.6 mm, and baffle separators are perforated with holes of 0.2 mm. The filter elements are combined together, and are placed in a container with a diameter of 2.5 m and a height of 3m and separated by diaphragms perforated with holes of 1 mm and a particle size of 0.4-0.12 mm.

Description

The present invention relates to the manufacture of a filter for use in the treatment of waste water generated by the olive oil production industry commonly referred to as "margines", and the production of a filter for the treatment of waste water generated by the olive oil production industry commonly referred to as "margines". refining of its residues until the recovery of polyphenols from organic matter and salts, and the production of a water suitable for watering, by the combination as filtering products: activated carbon, zeolite, and sand . This is a Class 40 product. Method of manufacture: The Margines recovered at their exit are first poured into a decanter tank through a filter composed of washed gravel and sand to recover the large woody parts. suspension in the Margines. Then with a pump of 1 "the Margines are sent in a filter composed of a container of a diameter of 2.5 meters and a height of 3m which contains successive layers with a thickness of 1 meter of sand, del meter zeolite, and 1 meter of activated carbon, of a relatively large particle size ranging from 0.4 to 0.12 mm These layers are separated by a diaphragm having 0.3 mm holes These layers successively recover salts, polyphenols and Organic substances and colors The Margines are then taken to a second 2m x 2.50m x 2.50m decanter tank through a layer of 20 cm of fine sand to recover saline parts mainly composed of potassium salts. the Margines are sent by another pump in another filter of the same size as the first of a diameter of 2.50m x 3m having successive layers of zeolite, activated charcoal and sand with a thickness of 1 meter. and a particle size ranging from 0.3 to 0.6 mm separated by a diaphragm perforated with 0.2 mm holes successively recovering polyphenols, organic materials and saline. Then the Margines are sent to another decanter tank through a layer of very fine black sand with a thickness of 40 cm. Margines thus removed from remaining parts are sent into a third filter of 2.50 mx 3 m containing successive layers of activated carbon, sand and zeolites with a thickness of 1 meter and a particle size ranging from 0.2 mm at 0.4mm thus recovering organic pollutants, salts, phenols. Then the Margines are sent to a final decanter tank through a layer of very fine sand of a thickness of 50 cm. At the exit we have good water for crop irrigation.

Claims (5)

CLAIMS1) Filter used in the treatment of Margines, whose filter elements used in its composition are a combination of three entirely ecological substances: activated carbon, zeolite, and sand. 2) Filter according to claim (1) characterized in that the filter elements are entirely ecological, combined with each other in a precise order and are placed in a container with a diameter of 2.5 m and a height of 3m, separated from each other by diaphragms perforated with holes of 0.3 mm and with a particle size ranging from 0.4 mm to 0.12 mm. 3) A filter according to claim (2) comprising a settler in which Margins thus cleared of their salts, their polyphenols and their organic pollutants according to claim (2), are then discharged through a layer of sand of a thickness of 20 cm; a pump by means of which they are conducted in a second filter having the same dimensions as the previous one (2.50m x 3m) according to claim (2), the particle size of the filter elements is 0.3mm to 0.6 mm and the order of their placement is: zeolite, activated carbon and sand. The separating diaphragms are perforated with 0.2 mm holes. 4) The filter of claim (3) which comprises another settling tank in which are poured Margines through a layer of black sand of a thickness of 40 cm, and with a pump driven in a third filter the same dimension as the filter according to claims (2) and (3) and whose diaphragms are perforated with holes of 1 mm. 5) Filter according to claim (4) aui comprises a settling tank in which are poured Margines, after previous treatments through a layer of very fine sand with a thickness of 50 cm.