Water treatment method for synergistically removing total organic carbon from biochemical tail water in coal chemical industry

The invention relates to the technical field of water treatment, in particular to a water treatment method for synergistically removing total organic carbon from biochemical tail water in the coal chemical industry, which comprises the following steps: classifying the biochemical tail water in the coal chemical industry according to biodegradability, and carrying out advanced oxidation treatment on the refractory biochemical tail water to improve the biodegradability; the total organic carbon content of the effluent is stably controlled after treatment of the deep biochemical system, the effluent of the deep biochemical system is subjected to two-stage continuous reverse osmosis system to remove total organic carbon and salt, and raw water is subjected to reverse osmosis treatment and then mixed with two-stage reverse osmosis effluent according to a set proportion to enter a boiler resin exchange system to be treated. And the effluent is stable and the total organic carbon is less than 0.5 mg/L. According to