常规氯化消毒工艺中典型消毒副产物生成的数学模型
- 海之魂
-
0 次阅读
-
0 次下载
-
2020-03-19 16:20:25
文档简介:
关);影响HAAs生成的因素排序为:氨氮含量(负相关)>pH值(负相关)>加氯量>四因素的交互作用>UV254和pH的交互作用(负相关).将表5中相关参数代入式(8)可得包含各因素交互作用的消毒副产物生成的线性模型为:CTHMs=73.405+13.109×[NH3-N]+4.808×[Cl2]-5.439×[pH]-1.177×[UV254]·[pH]-0.189×[UV254]·[NH3-N]·[Cl2]·[pH](9)CHAAs=17.305-13.222×[NH3-N]+0.532×[Cl2]-1.401×[pH]-0.006×[UV254]·[pH]+0.137×[UV254]·[NH3-N]·[Cl2]·[pH](10)4结论采用均匀试验设计,讨论了水样UV254值、氨氮含量、加氯量和pH值等关键因素对消毒副产物THMs和HAAs生成的影响,并以SPSS统计软件进行了线性及非线性拟合,结果表明:1)线性模型能较好地描述THMs和HAAs的生成(相关度均大于0.9),具体关系式为:CTHMs=47.189-3.545×[NH3-N]+3.861×[Cl2]-5.307×[pH]CHAAs=13.980-1.179×[NH3-N]+1.217×[Cl2]-1.325×[pH]2)THMs和HAAs生成的非线性模型的相关度分别为0.924和0.883,总体上低于线性模型.具体关系式为:CTHMs=101.735×[UV254]0.293×[NH3-N]-0.087×[Cl2]0.416×[pH]-1.106CHAAs=100.048×[UV254]1.053×[NH3-N]0.001×[Cl2]0.377×[pH]0.0773)考虑各因素交互作用下,THMs和HAAs生成的线性模型的相关度均为1,进一步改善了拟合效果.具体关系式为:CTHMs=73.405+13.109×[NH3-N]+4.808×[Cl2]-5.439×[pH]-1.177×[UV254]·[pH]-0.189×[UV254]·[NH3-N]·[Cl2]·[pH]CHAAs=17.305-13.222×[NH3-N]+0.532×[Cl2]-1.401×[pH]-0.006×[UV254]·[pH]+0.137×[UV254]·[NH3-N]·[Cl2]·[pH]由于试验数据有限,上述模型还需进行进一步实践验证以及修正.参考文献:[1]鄂学礼,王丽,邢方潇.饮水消毒副产物及其标准研究进展[J].环境与健康杂志,2010,27(1):24.[2]BannaMH,ImranS,FrancisqueA,etal.Onlinedrinkingwaterqualitymonitoring:reviewonavailableandemergingtechnologies[J].CriticalReviewsinEnvironmentalScienceandTechnology,2013,106:389395.[3]FarreMJ,DayS,NealePA,etal.Bioanalyticalandchemicalassessmentofthedisinfectionby-productformationpoten-tial:Roleoforganicmatter[J].WaterResearch,2013,47:54095421.[4]JeyongYoon,YoushikChoi,SoonhangCho,etal.LowtrihalomethaneformationinKoreandrinkingwater[J].ScienceoftheTotalEnvironment,2003,302:157166.[5]VillanuevaCM,KogevinasaM,GrimaltbJO.Haloaceticacidsandtrihalomethanesinfinisheddrinkingwatersfromheter-ogeneoussources[J].Waterresearch,2003,37:953958.[6]RichardAL,ArieneLR.Chloroformandchlorophenolproductionbydecarboxylationofnaturalacidsduringaqueouschlo-rination[J].EnvironmentalScienceandTechnology,1979,13(3):325329.[7]BoyceSD,HorningJF.Reactionpathwaysoftrihalomethanformationfromthehalogenationofdihydroxyaromaticmodelcompoundsfo
评论
发表评论