According to an embodiment of the present invention, an offensive odor treatment apparatus comprises: a pre-treatment unit for treating gas by jetting an acid solution which is reactive to N-based compounds and a microorganism treatment unit for treating the gas treated through the pre-treatment unit by contacting a microorganism attached carrier.COPYRIGHT KIPO 2015본 발명의 실시예에 따른 악취처리장치는 N계 화합물과 반응하는 산성용액을 살수하여 기체를 처리하는 전처리부 및 상기 전처리부에 의해 처리된 기체를 미생물이 부착된 담체에 접촉시켜 처리하는 미생물처리부를 포함한다.