高浓度难降解有机废水湿式氧化可行性研究

Study on the feasibility of the wet air oxidation of high-strength refractory organic wastewater

选择四种高浓度难降解有机废水,在2L高压间歇反应釜中,研究了湿式氧化效果与技术可行性。结果表明:从氧化的容易程度来看,乳化液废水>丙硫咪唑废水>甲胺磷废水>分散蓝废水;各废水湿式氧化后可生化性得到显著改善;Cu2+有不同程度的催化作用;甲胺磷废水和丙硫咪唑废水对不锈钢反应釜腐蚀严重,乳化液废水最适宜湿式氧化。反应温度显著影响废水湿式氧化效果,温度越高氧化率越高。

A systematic study on the efficiency and technique feasibility of wet air oxidation (WAO) have been performed in a 2 L high-pressure batch autoclave by choosing four kinds of high-strength refractory organic wastewater. The experimental results indicate that the order of oxidation difficulty is that emulsification wastewater > albendazole wastewater > methamidopho wastewater > dispersing blue dye wastewater. Biochemistry nature of each wastewater could the improved notably after wet air oxidation. Cu2+ has catalysis in various degree. methamidophos wastewater and albendazole wastewater corrode stainless steel cauldron seriously. The emulsification wastewater is suitable for wet air oxidation mostly. The higher the temperature is, the higher the oxidation is, too.