Printing and dyeing wastewater treatment system and treatment method thereof

The invention discloses a printing and dyeing wastewater treatment system and a treatment method thereof.The system comprises an anaerobic tank, a first adjusting tank, a second adjusting tank and a sedimentation tank and further comprises an adjustable filter pressing mechanism, the adjustable filter pressing mechanism comprises an up-down sliding part, a sliding treatment frame and a turn-over structure, and a plurality of one-way valve components are arranged on the turn-over structure; a one-way guide plate is arranged at the top of the sliding treatment frame, and a cavity is formed between the one-way guide plate and the sealing surface; the medium-pressure filtering structure comprises a partition plate arranged in the cavity, an adsorption plate is arranged on one side of the partition plate, an upper-row pumping part is arranged on the outer side of the adsorption plate, and the liquid inlet end of the upper-row pumping part is arranged on the outer side of the adsorption plate. According to the devi