METHOD TO PURIFY A LIQUID BY FILTRATION Russian patent published in 2004 - IPC

FIELD: purification of liquids from different pollutions.

SUBSTANCE: the invention is dealt with the field of purification of a liquid from different pollutions and may find application in practice of purification of water, sewage and different solutions and liquid mediums in some processes of chemical engineering, in benefication, in food and other industries. The method provides for mixing of a liquid with reagents and-or sorbents and the mixture subsequent passing through a layer of the granular loading till its pollution, termination of the filtration, delivery of a washing liquid or an air till washing the loading from pollutions, termination of their delivery into the washing with consequent resumption of the process of filtration. At that the reagents and-or sorbents are previously admixed with a part of the delivered washing liquid and injected into the first along the course of movement expanded layers of the granular loading before the end of its washing. The invention allows to improve productivity and stability of liquids purification by filtration and-or to reduce consumption of reagents and-or sorbents.

EFFECT: the invention allows to improve productivity and stability of liquids purification by filtration and-or to reduce consumption of reagents and-or sorbents.

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