Reverse osmosis membrane sewage treatment device and sewage treatment method

The invention relates to the technical field of sewage treatment, in particular to a reverse osmosis membrane sewage treatment device and a sewage treatment method.The device comprises a water inlet box, a treatment box, a water outlet box and a driving box; a driving part is arranged on the driving box; two groups of sewage treatment components are arranged in the treatment box and are divided into a sewage treatment chamber I, a sewage treatment chamber II and a sewage treatment chamber III; piston plates are arranged in the sewage treatment chamber I, the sewage treatment chamber II and the sewage treatment chamber III; and the three groups of piston plates are driven by a driving piece to realize alternate lifting. A plurality of groups of sewage treatment assemblies are arranged, and the reverse osmosis membrane area and the sealing area are opposite to/staggered with the through holes along with rotation of the treatment plate, so that sewage filtering process control is realized. Meanwhile, a piston pl