Secondary stored water circulating system for purified water production workshop

The utility model discloses a secondary stored water circulating system for a purified water production workshop. Purified water subjected to primary reverse osmosis treatment in a fresh water tank enters a secondary reverse osmosis device for treatment under the action of a secondary high-pressure pump, the purified water subjected to the treatment in the secondary reverse osmosis device is discharged into a purified water storage tank, and thick water subjected to the treatment in the secondary reverse osmosis device is guided back to the fresh water tank by a pipeline. According to the secondary stored water circulating system, the thick water discharged from the secondary reverse osmosis device is guided back through the pipeline and then is recycled, the guided-back thick water can be repeatedly used only by being subjected to secondary reverse osmosis, thereby saving a great deal of water. The improved structure is simple, and the improved secondary stored water circulating system can save water resourc