NOVELTY - Biologically treating high-sulfur phenolic waste alkali liquor, comprises introducing sludge into a reactor, starting the reactor, continuously pumping the waste alkali liquor to be processed at different dilution times into the reactor whose inner part is inoculated with sludge by stages, training and cultivating alkaline resisting microorganism in the sludge, stably removing greater than 90% of waste alkali liquor pollutant, and continuously pumping the waste alkali liquor which is not diluted to the reactor until the waste alkali liquor is processed completely.    USE - The method is useful for biologically treating high-sulfur phenolic waste alkali liquor.    ADVANTAGE - The method is capable of economically, simply and biologically treating the high-sulfur phenolic waste alkali liquor without environmental pollution.    DETAILED DESCRIPTION - Biologically treating high-sulfur phenolic waste alkali liquor, comprises introducing sludge, under an aerobiotic condition, into a reactor, where the sludge has a pH of 9-10 and comprises 0.12-1.5% of sodium ion (Na+), starting the reactor, continuously pumping the waste alkali liquor to be processed at different dilution times into the reactor whose inner part is inoculated with sludge by stages, where the dilution times are gradually reduced, training and cultivating alkaline resisting microorganism in the sludge, stably removing greater than 90% of waste alkali liquor pollutant when the waste alkali liquor has dilution degree of 1, finishing the starting of the reactor, and continuously pumping the waste alkali liquor which is not diluted to the reactor until the waste alkali liquor is processed completely, where, in the operation conditions, the reaction temperature is 20-35 degrees C, the dissolved oxygen is 3-7 mg/l, a water retention time is 24-96 hours and the pollutants are represented by the concentration of sulfide and chemical oxygen demand (COD) concentration. An INDEPENDENT CLAIM is included for a biological processing device comprises an air-lift bioreactor, water pipelines (1), gas pipelines, and a condenser, where: the air-lift bioreactor comprises a conical cylinder bottom, a reaction cylinder, a sludge sediment region and a three-phase separator (9), which is installed in the sludge sediment region; the reaction cylinder comprises an inner upper flowing region and a lower flowing region; the reactor is connected with the water pipelines and the gas pipelines by the conical cylinder bottom and the three-phase separator, is charged with water and gas and discharges the water and gas; the gas pipeline is connected with the three-phase separator; and the condenser is connected with the water pipeline by a water outlet.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a biological processing device.    Water pipelines (1)    Water inlet pump (2)    Temperature control device (3)    Insulation layer (6)    Three-phase separator. (9)