Method for processing waste liquid of regenerated arsenic removal ionic sieve

The invention discloses a method for processing the waste liquid of regenerated arsenic removal ionic sieve, comprising the following steps: arsenic removal ionic sieve material absorbing saturated arsenate solution and/or arsenious acid solution and hydrochloric acid water solution having the pH value of 1-1.5 are taken to be put into a first reactor for reaction; after being filtered, the regenerated arsenic removal ionic sieve containing arsenious filtrate which is then introduced into a third reactor and pumped with sulfureted hydrogen gas for reaction; after being filtered, arsenic sulfide precipitate and filtrate are obtained, the filtrate is introduced into a degasification device, and the sulfureted hydrogen which is dissolved in the water and does not react yet is removed; the removed sulfureted hydrogen gas circulates back to the third reactor through a gas transmission pump for reaction; the liquid in the degasification device is introduced into a liquid storage tank to be stored and then enters the first reactor. The method ensures the materials such as the regenerated arsenic removal ionic sieve, sulfureted hydrogen gas and acidic water solution in the whole regeneration process of the arsenic removal ionic sieve to be recycled, and no waste is generated, so that a new way is developed for utilizing the resources to the utmost extent.