摘要：

将微波与湿式催化氧化技术相结合,以硫酸改性纳米氧化铈为催化剂,H₂O₂为氧化剂,降解腈纶废水.研究了催化剂和氧化剂的用量、反应时间、反应温度等因素对有机物去除率的影响,确定了最佳反应条件为50 mL腈纶废水(COD 635 mg/L)投加0.25 g酸化纳米CeO₂催化剂和0.3 mL 6%的H₂O₂,室温下搅拌3 h,微波辐射140 ℃下反应60 min,COD平均去除率达到89.7%.

关键词: 微波, 湿式催化氧化, 酸改性纳米CeO₂, 腈纶废水

Abstract:

Combining microwave with CWAO,and taking sulfuric acid modified nano cerium oxide as catalysts,and H₂O₂ as oxidant,acrylic fiber wastewater can be degraded. The influences of factors,such as the catalyst and oxidant dosages,reaction time,reaction temperature,etc. on the organic matter removing rates are studied. The optimum reaction conditions are as follows:acrylic fiber wastewater 50 mL (COD is 635 mg/L),adding 0.25 g of acid modified nano CeO₂ catalyst and 0.3 mL 6% of H₂O₂,stirring for 3 h at room temperature,and under microwave radiation 140 ℃ and reacted for 60 min,the average COD removing rate reaches 89.7%.

Key words: microwave, catalytic wet air oxidation(CWAO), acid modified nano CeO₂, acrylic fiber wastewater

中图分类号: 

• X703.1