Abstract: Based on the analysis about the waste gas produced from chlorate electrolyzers,waste gas treatment technology of chlorate electrolyzers was introduced as follows:firstly,content of chlorine in waste gas is reduced by 50% after pretreatment;then,volume fraction of chlorine is below 2×10^-5through the absorption columns in series,whose absorber is NaOH solution;finally,by the deoxygenization column with palladium as catalyst and Al₂O₃ as carrier,the gas is transported to the next procedure through water-ring vacuum pump and compressor.Some attentive problems and appropriate measures in the process of waste gas treatment were put forward.

Key words: chlorate, waste gas, deoxygenization, dechlorination