The degradation of partially hydrolyzed polyacrylamide(HPAM) found in alkaline/surfactant/polymer flooding sewage was investigated using Fenton-type reagents. Different Fenton reagent treatments for HPAM degradation w...The degradation of partially hydrolyzed polyacrylamide(HPAM) found in alkaline/surfactant/polymer flooding sewage was investigated using Fenton-type reagents. Different Fenton reagent treatments for HPAM degradation were compared. The effects of pH, hydrogen peroxide(H_(2)O_(2)), ferrous ion(Fe^(2+)), and tartaric ion(C_(4)H_(4)O_(6)^(2-)) concentrations were studied. The degradation reaction occurred within a wide range of pH(3–9). The HPAM degradation performance of photo-Fenton processes using solar light and UV were compared with that of the Fenton process. The degradation rate was found to be strongly dependent on the H_(2)O_(2)/Fe^(2+)/C_(4)H_(4)O_(6)^(2-)molar ratio. The HPAM degradation efficiency was 90%, and the chemical oxygen demand removal efficiency was 85%. HPAM could be degraded into a compound with a lower molecular weight, but it was difficult to achieve complete mineralization to CO_(2). The presence of intermediate products hindered further oxidation in the Fenton process.展开更多
利用UV/Fenton法对模拟间甲酚废水进行了处理,研究了H2O2加入量、FeSO4加入量、pH、原水初始浓度等因素对COD去除率的影响.通过大量实验,确定了UV/Fenton法处理模拟间甲酚废水的最佳条件:常温下,pH为4.0,[H2O2]/[Fe2+]=15,紫外灯照射时...利用UV/Fenton法对模拟间甲酚废水进行了处理,研究了H2O2加入量、FeSO4加入量、pH、原水初始浓度等因素对COD去除率的影响.通过大量实验,确定了UV/Fenton法处理模拟间甲酚废水的最佳条件:常温下,pH为4.0,[H2O2]/[Fe2+]=15,紫外灯照射时间为60 m in.当原水间甲酚浓度为251 mg/L时,在最佳反应条件下,经UV/Fenton法处理后COD去除率达80%左右.为达到更好的去除效果,在实验过程中加入TiO2,将COD去除率提高到90.5%,再用Ca(OH)2絮凝沉降,则COD去除率可达92.5%.展开更多
基金the Northeast Petroleum University Youth Science Foundation (No. 2019QNL-35)Guiding Science and Technology Plan Project of Daqing (No. zd-2021-39)。
文摘The degradation of partially hydrolyzed polyacrylamide(HPAM) found in alkaline/surfactant/polymer flooding sewage was investigated using Fenton-type reagents. Different Fenton reagent treatments for HPAM degradation were compared. The effects of pH, hydrogen peroxide(H_(2)O_(2)), ferrous ion(Fe^(2+)), and tartaric ion(C_(4)H_(4)O_(6)^(2-)) concentrations were studied. The degradation reaction occurred within a wide range of pH(3–9). The HPAM degradation performance of photo-Fenton processes using solar light and UV were compared with that of the Fenton process. The degradation rate was found to be strongly dependent on the H_(2)O_(2)/Fe^(2+)/C_(4)H_(4)O_(6)^(2-)molar ratio. The HPAM degradation efficiency was 90%, and the chemical oxygen demand removal efficiency was 85%. HPAM could be degraded into a compound with a lower molecular weight, but it was difficult to achieve complete mineralization to CO_(2). The presence of intermediate products hindered further oxidation in the Fenton process.
文摘利用UV/Fenton法对模拟间甲酚废水进行了处理,研究了H2O2加入量、FeSO4加入量、pH、原水初始浓度等因素对COD去除率的影响.通过大量实验,确定了UV/Fenton法处理模拟间甲酚废水的最佳条件:常温下,pH为4.0,[H2O2]/[Fe2+]=15,紫外灯照射时间为60 m in.当原水间甲酚浓度为251 mg/L时,在最佳反应条件下,经UV/Fenton法处理后COD去除率达80%左右.为达到更好的去除效果,在实验过程中加入TiO2,将COD去除率提高到90.5%,再用Ca(OH)2絮凝沉降,则COD去除率可达92.5%.