Method for separating organic matters in reverse osmosis concentrated water

The invention relates to a method for separating organic matters in reverse osmosis concentrated water. The method comprises the following steps: filtering reverse osmosis concentrated water via a glass fiber filter membrane, passing the reverse osmosis concentrated water through an XAD-8 resin column, washing the XAD-8 resin column by ultrapure water, and mixing the washing liquid and effluent to obtain mixed effluent; backwashing the XAD-8 resin column by hydrochloric acid, and backwashing the XAD-8 resin column by pure water, wherein the effluent component is a hydrophobic alkaline organic matter; regulating the pH value of the mixed effluent to be 2 by hydrochloric acid, and passing the mixed effluent through serially connected XAD-8 resin column and XAD-4 resin column, wherein the effluent is a hydrophilic organic matter; backwashing the XAD-8 resin column by sodium hydroxide, and backwashing the XAD-8 resin column by pure water, wherein the effluent component is a hydrophobic acidic organic matter; backwashing the XAD-4 resin column by the sodium hydroxide, and backwashing the XAD-4 resin column by pure water, wherein the effluent is a weakly hydrophobic acidic organic mater; carrying out Soxhlet extraction on the dried XAD-8 resin by methanol, carrying out rotary vaporization on the prepared extracting solution until the extracting solution is dry, and dissolving by pure water to obtain the hydrophobic neutral organic matters. According to the separation method provided by the invention, organic matters in the reverse osmosis concentrated water can be effectively separated.