The results showed that,for No. 1 catalyst by adjusting the pH to 8 and adding 600 mgClO2/L wastewater,an active time of 60 minutes is the most effective and economical. The COD removal rate was 80.5%,and the cost was 3.59 yuan/kgCOD.

• 结果表明；二氧化氯+1%23催化剂催化氧化处理活性艳红X-3B染料废水时；最佳pH值为8左右；二氧化氯投加量为600 mg/L废水；反应60 min后；COD去除率可达80.；5%25；药剂费为3