Compound ion exchange-reverse osmosis coupled deep water treatment system and process

The invention belongs to the technical field of water deep treatment, and particularly relates to a compound ion exchange-reverse osmosis coupled deep water treatment system and process. The system comprises a raw water pretreatment system, a composite ion exchange system, a reverse osmosis membrane system and a regenerated liquid treatment system, and aims at protecting a technology for improving the productivity, reducing the cost and pollution and recovering high-purity solid products through coupling of a composite anion and cation exchange process and a reverse osmosis process. According to the technology, high-efficiency removal of raw water hardness (calcium, magnesium ions and the like), scaling anions (sulfate radicals, phosphate radicals and the like) and organic matters is completed under the condition of not adding other regeneration agents (acids, alkalis, salts and the like) through an anion and cation resin on-demand mixing technology and a novel concentrated water internal circulation technolo