饮用水中阴离子合成洗涤剂去除的研究

Removing anionic synthetic detergents in drinking water

采用紫外-过氧化氢高级氧化联用工艺去除饮用水中低含量阴离子合成洗涤剂。在原水的十二烷基苯磺酸钠的质量浓度为1mg/L左右、紫外光强133.9μW/cm2、过氧化氢投加量20mg/L和停留时间60min条件下,十二烷基苯磺酸钠的去除效率达到90.03%;试验建立了紫外-过氧化氢光激发氧化降解饮用水中阴离子合成洗涤剂的动力学方程式;并采用正交试验,考察了动态连续流条件下不同因素对本工艺的处理效果的影响程度,分析得出各因素对本工艺处理效果影响程度的顺序为:紫外光光照强度、初始过氧化氢投加量、反应停留时间;运用交互分析方法得到每2个因素交互作用影响程度,得出双氧水初始投加量与反应停留时间交互作用为最大交互影响因子。

Ultraviolet light-hydrogen peroxide advanced oxidation combined process was used to remove lowconcentration anionic synthetic detergents in drinking water. Under the condition that the mass concentration of sodium dodecylbenzenesulfonate of raw water was about 1 mg/L, the ultraviolet light intensity was 133.9μW/cm^2, the dosage of hydrogen peroxide was 20 mg/L and the retention time is 60 min, the removal rate of sodium dodecylbenzenesulfonate reached 90.03%; the dynamic equation of the oxidation degradation of anionic synthetic detergents in drinking water inspired by ultraviolet light-hydrogen peroxide was founded through the test; under continuous influents, the influencing degree of different factors on the treatment results of this process was investigated through the orthogonal experiment, which shows the following descending orders： ultraviolet light intensity, initial dosage of hydrogen peroxide, hydraulic retention time; At last, by the way of interaction analysis, the influencing degree of each interaction between two factors was gotten, the interaction influence between the initial dosage of hydrogen peroxide and hydraulic retention time could be regarded as the most important interaction factor in this experiment.