Optimization of Ozonation Treatment Process for Azo Dyes Wastewater with Response Surface Methodology
CHEN Jun
WU Yanbei
JIN Jie
DENG Chengxun
YANG Hongxing
WU Ke
JIN Song
Abstract：For the advanced treatment of azo wastewater, a four-factor five-level response surface method was designed for the optimization of ozonation treatment process for azo dyes wastewater by using Design-Expert8.0.6.1 software and Central Composite design principle which was based on the single factor experiment. The results showed that for 200 mL orange Ⅱ wastewater with its initial concentration of 100 mg/L, when the ozone flux was 1 602.06 mg/L, the catalyst of magnesium oxide was 0.32 g, the initial pH of the wastewater was 7.04 and the reaction temperature was 29.32 ℃, the decolorization rate of the wastewater could be up to the maximum value of 95.52％ after 5 min. Through the variance analysis, residual analysis and model validation of the model, the model correlation coefficient is 0.992 3, F value is 138.11, P value is less than 0.000 1, coefficient of variation is 2.26％, signal to noise ratio is 49.124 and these indicators are all within reasonable limits. So the model has high reliability and accuracy and the prediction performance is good.
Keywords：response surface methodazo dyes wastewaterozone oxidationadvanced treatment
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 146-152 )