Method and system for regenerating and recovering calcium carbonate from reverse osmosis concentrated water

The invention discloses a method and a system for regenerating and recovering calcium carbonate from reverse osmosis concentrated water, and belongs to the technical field of water treatment. Calciumand magnesium ions and high-valence metal ions in the concentrated water are precipitated and separated by Ca (OH) 2 to obtain a calcium carbonate product so that the concentrated water is regeneratedand converted into raw water. The connection breakthrough of the wastewater regeneration field and the inorganic salt industrial technology is realized, the effects of wastewater regeneration and solid waste zero discharge show extremely obvious technical progress, the capacity of recycling concentrated water resources and recycling high-added-value calcium carbonate finished products to turn waste into wealth represents the development direction in the future, and the technical scheme has the advantages of being small in investment, convenient to match, easy to operate, low in operation costand the like, and the wide