Adsorption-catalytic oxidation degrading method for phenol in waste water
The invention relates to an adsorption-catalytic oxidation degrading method for phenol in waste water, and belongs to the technical field of water treatment. The method is characterized in that active carbon fibers which are loaded with ferroferric oxide are used as an adsorption agent and filled in an adsorption tower so as to adsorb the waste water containing phenol; hydrogen peroxide aqueous solution is added into the adsorption tower, air is also blown into the adsorption tower, and the mixed system is oxidized for 1h to 3h, so that the adsorption agent is regenerated, and then the waste water containing phenol is inputted to be circularly adsorbed. By adopting the method, the desorption regeneration problem of the active carbon fibers after adsorbing phenol, the degradation problem of the desorbed phenol and the high energy consumption problem of the catalytic wet-type hydrogen peroxide oxidation technology in treating the waste water containing a great amount of phenol can be solved. The method has the advantages of simple process, easiness in operation, no secondary pollution on the environment and the like. 1. A kind of phenol in the exhausted water absorption-catalytic oxidation degradation method, which is characterized in that in order to load the ferroferric oxide and activated carbon fiber as the adsorbent of the adsorption column filled, the phenol-containing waste water after adsorption, the adsorption column adding an aqueous solution of hydrogen peroxide, and blast air at the same time, oxidation process is performed on the mixed system 1-3 hours later, the adsorbent is regenerated, the regeneration of the adsorbent is recirculated and used in phenol-containing waste water adsorption processing. 2. the degradation method according to Claim 1, characterized in that the blast air of the void tower air speed 0.02-0.06m/s. 3. The degradation method according to Claim 1, characterized in that in the aqueous hydrogen peroxide is added H2 O2 adsorbed on the adsorbent of the molar ratio of phenol 14-28 : 1. 4. The degradation method according to Claim 1, characterized in that the oxidation treatment, the temperature of the mixed system is the 30-70 [...]. 5. The degradation method according to Claim 4, characterized in that the oxidation treatment, the temperature of the mixed system is the 50-60 [...].