The invention belongs to the field of waste water recycling, and particularly relates to a
papermaking waste water stepped recycling device which comprises an
evaporation box and a spiral
extrusion dehydrator, a plurality of
evaporation tables are arranged in the
evaporation box and are vertically arranged at equal intervals, an
exhaust valve is fixedly connected to the top of the evaporation box, and the
exhaust valve is fixedly connected to the bottom of the evaporation box. A
mixing tank is arranged on one side of the evaporation box, a steam valve used for inputting and outputting steam is fixedly connected to the outer side of the evaporation box, a concentrated liquid valve is installed at the bottom of the evaporation box, through the arrangement,
papermaking wastewater can be rapidly and efficiently recycled in a stepped mode, and in the recycling work of a large
paper mill, large-size
wastewater can be rapidly treated; in the method, all
solid filter residues and concentrated liquid are finally converted into fuel to be burnt, so that the biggest pain point of
sludge treatment is fundamentally bypassed; and waste materials which are difficult to utilize originally are effectively utilized, so that the effect of making the best use of materials is achieved.