METHOD AND DEVICE FOR PROCESSING LIQUID FLOWS OF PULP MILL Russian patent published in 2017 - IPC D21C11/00 

FIELD: textile, paper.

SUBSTANCE: device includes a pulping process for obtaining pulp; at least one washing stage for washing the mentioned pulp; at least one bleaching step for bleaching the washed pulp; a waste water treatment plant comprising at least one purification stage for purifying sewage waters; and a water treatment plant comprising at least one purification stage; and the method comprises directing a liquid flow comprising a portion of the purified sewage waters from the waste water treatment plant and/or a portion of the process water to at least one purification stage of the water treatment plant to purify the liquid flow in the mentioned at least one purifying unit of water treatment plant, to obtain reusable water; and using the mentioned reusably water as process water during at least one process and/or at the stage of pulp mill process. In addition, the invention relates to a device for processing liquid flows in the pulp mill and to application of the water treatment plant of the pulp mill for purifying process water and/or sewage waters from the waste water treatment plant.

EFFECT: simplified and shortened duration of the process.

16 cl, 5 dwg, 1 tbl