The invention discloses a
wastewater zero
discharge method in a manufacturing process of island superfine
fiber synthetic leather. The method comprises the following steps: merging an alkali-minimization
wastewater and a
dyeing wastewater into a wastewater regulating reservoir, or merging the alkali-minimization wastewater into the wastewater regulating reservoir; adding acid to the wastewater regulating reservoir to form a
solid matter; transferring the wastewater after the
solid matter is cleaned into a turntable
solid-liquid separator; adding a
polyacrylamide flocculant and a
polyaluminium chloride flocculant; evaporating the
solid matter and the
sludge obtained by solid-liquid separation in an
evaporation tank, and simultaneously collecting
distilled water in a condensation manner; transferring the wastewater from solid-liquid separation into a multi-effect
evaporator to evaporate, and collecting
distilled water by condensation; merging the residual residue in the
evaporator into a
sludge concentrating tank to continue to process. The production of the island superfine
fiber synthetic leather is taken as a basic
system, and is combined with collection, treatment and comprehensive utilization technologies of the production wastewater and the
solid matter, the technical bottlenecks of wastewater zero
discharge in the production process is solved, and the island superfine
fiber synthetic leather which is friendly to environment and high in quality can be produced.