Study on Removal of Synthetic Leather Wastewater Pretreatment by Fenton Process
Synthetic leather wastewater contains a lot of organic pollutants such as dimethylformamide(DMF),which is toxic to organisms.Single factor test method is adopted.The optimal process parameters of Fenton reaction for DMF treatment include pH=3,mass ratio of hydrogen peroxide(H2O2)to chemical oxygen demand(CODor)m=6.69,molar ratio of H2O2 to ferrous ion n=8 and reaction time t=120 min.The average removal rate of DMF is 96.18％.On this basis,using the experimental design principle of response surface in Design-Expert software,17 groups of experiments with three factors,three levels and three levels were designed,and further study was conducted to determine the removal effect of the above parameters on CODCr of Fenton pretreatment synthetic leather wastewater The automatic control system with Fenton integration,H2O2 and FeSO4 precision control and integrated reaction equipment with good degradation effect of DMF leather wastewater are designed and produced.The average removal rate of CODCr and DMF of synthetic leather wastewater is 71.87％and 95.78％.
Fenton reactionsynthetic leather wastewaterDimethylformamide(DMF)automatic control system
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