The invention discloses a
dyeing and finishing
wastewater treatment system which comprises a first-level
treatment unit, a first-level
precipitation unit, at least one set of second-level
treatment unit and a second-level
precipitation unit, wherein the second-level
treatment unit is connected with a corresponding second-level
precipitation unit; the first-level treatment unit comprises a grid
pool and a
wastewater regulating
pool; the first-level precipitation unit comprises a coagulative precipitation tank; the second-level treatment unit comprises a hydrolytic acidification
cell, a first aerobic contact oxidation
cell, a second aerobic contact oxidation
cell and a reaction buffering
pool which are connected in sequence; the second-level precipitation unit comprises a second-level precipitation pool and a reverse multi-element filtering pool; and the reverse multi-element filtering pool is connected with a
clean water pool. The invention also discloses a
wastewater treatment technology adopting the
dyeing and finishing wastewater
treatment system. According to the
dyeing and finishing wastewater
treatment system and technology disclosed by the invention, the
textile wastewater can be deeply treated, the wastewater can reach the standard of recycled water, multiple effects of reducing wastewater
discharge, saving
water resources and protecting environment can be achieved, and the dyeing and finishing wastewater treatment
system can meet the market requirement of the
textile dyeing and finishing industry.