纺织印染废水的湿式空气氧化处理

时间:2023-04-25 22:19:57 环境保护论文 我要投稿
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纺织印染废水的湿式空气氧化处理

摘要: 研究了用湿式空气氧化法处理纺织印染废水的过程,并建立了相应的动力学模型.在300℃下,用湿式空气氧化法处理120 min可使纺织印染废水的COD去除率达到56%,同时,可使废水的可生化降解性由0.04提高到0.40,有利于对这种废水进行进一步的处理.印染废水的污染物由多种组分构成,在一定的反应温度下有些污染物能被氧化,有些污染物则不能被氧化.根据这一特点建立了纺织印染废水湿式氧化过程的动力学模型,模型拟合结果与实验数据吻合良好. Abstract: The wet air oxidation of printing and dying wastewater and its reaction kinetics were investigated in the present work. A COD removal of 56% was obtained after the wastewater was treated with wet air oxidation at 300 ℃ for 120 min. Furthermore, the biodegradability of the wastewater was improved from 0. 04 to 0. 40. The printing and dying wastewater contain many kinds of pollutants, such as dyestuff and dying auxiliary; some of the pollutants are easy to be oxidized, while the others are difficult to be oxidized. A kinetic model for the wet air oxidation of printing and dying wastewater was constructed on the basis of the reaction characters, and the model simulations were in good agreement with experimental data. 作 者: 刘刚    雷乐成    岑沛霖    LIU Gang    LEI Le-cheng    CEN Pei-lin   作者单位: 浙江大学化学工程学系,  期 刊: 浙江大学学报(工学版)  ISTICEIPKU   Journal: JOURNAL OF ZHEJIANG UNIVERSITY(ENGINEERING SCIENCE)  年,卷(期): 2001, 35(1)  分类号: X703  关键词: 印染废水    湿式空气氧化    反应动力学    废水处理   

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