Sulfur-containing waste gas treatment system and method

The invention discloses a sulfur-containing waste gas treatment system and method. The system comprises a sulfur removal tower, an alkaline washing tower and a water washing tower which are sequentially communicated. The sulfur removal tower can effectively remove sulfur-containing components in waste gas; then acid gas overflowing from the sulfur removal tower is absorbed and removed through treatment by the alkaline washing tower; and finally, through treatment by the water washing tower, alkali mist from the alkali washing tower is absorbed and removed, and effective purification and up-to-standard emission of the waste gas are finally realized. Compared with an RTO incinerator, the sulfur-containing waste gas treatment system has the advantages of being simple in structure, small in investment, low in operation cost, good in purification effect, high in safety coefficient, easy to popularize in engineering and the like, and is high in use value and good in application prospect; and meanwhile, the method f