Multi-stage and multi-section nanofiltration desalination treatment system for low-salt soy sauce

The utility model discloses a multi-stage multi-section nanofiltration desalination treatment system for low-salt soy sauce, which comprises a feed pipe, one end of the feed pipe is connected with a plurality of filter tanks through a plurality of feed branch pipes, the bottom ends of the filter tanks are provided with material guide pipes I, one end of each material guide pipe I is connected with a plurality of nanofiltration desalination devices through a plurality of material guide branch pipes, and the other end of each material guide pipe I is connected with a plurality of nanofiltration desalination devices. A second material guide pipe is arranged on one side of the nanofiltration desalination device, a detector and a reversing valve are arranged on the second material guide pipe, one end of the second material guide pipe is connected with the finished product storage tank, a liquid return pipe is arranged on one side of the reversing valve, a saline water conveying pipe is arranged at the bottom end o