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

摘要

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.