一种可用于低COD石化废水处理的新型树脂

石油化工高等学校学报第32卷第6期2019年12月Vol.32No.6Dec.2019投稿网址：http://journal.lnpu.edu.cn石油化工高等学校学报JOURNALOFPETROCHEMICALUNIVERSITIES一种可用于低COD石化废水处理的新型树脂燕晓宇，罗根祥，马诚（辽宁石油化工大学化学化工与环境学部，辽宁抚顺113001）摘要：为了对低COD的石化废水进行深度处理，通过乳液聚合法将苯乙烯、丙烯酸丁酯、可聚合季铵盐进行三元共聚，以一步法合成了一种新型聚苯乙烯（PS）微球吸附树脂。采用IR、SEM、BET等手段对树脂进行表征，并与市售吸附树脂D301、XAD⁃4、NDA⁃150进行了结构和性能的对比。结果表明，合成树脂呈不规则球形，直径在0.2~0.4mm，24h内可将石化二级废水的COD从100mg/L降至20mg/L以下。该树脂对石化废水的吸附行为接近单分子层的吸附，饱和吸附量达到89.0mg/g，高于市售树脂D301(85.5mg/g)、NDA⁃150(30.4mg/g)以及XAD⁃4(58.8mg/g)。臭氧氧化再生结果表明，合成的PS树脂可循环再生4次以上，较其他几种传统的吸附树脂具有更好的再生性能。该材料可以作为处理石化废水的良好吸附剂应用于低COD废水的深度处理工艺中。关键词：吸附树脂；乳液聚合；石化废水；臭氧氧化再生中图分类号：TE992文献标志码：Adoi：10.3969/j.issn.1006⁃396X.2019.06.006ANovelResinfortheTreatmentofLow⁃ConcentrationPetrochemicalWastewaterYanXiaoyu，LuoGenxiang，MaCheng（CollegeofChemistry，ChemicalEngineeringandEnvironmentalEngineering，LiaoningShihuaUniversity，FushunLiaoning113001，China）Abstract:Inordertoconductdeeptreatmentoflowconcentrationpetrochemicalwastewater,anoveltypeofpolystyrene(PS)microsphereadsorptionresinwassynthesizedbyemulsionpolymerizationofstyrene,butylacrylateandpolymerizablequaternaryammoniumsaltbyemulsionpolymerization.TheresinwascharacterizedbyIR,SEMandBET,andcomparedwithseveralcommerciallyavailableadsorptionresinsD301,XAD⁃4andNDA⁃150.Theresultsshowthatthesyntheticresinhasanirregularsphericalshapewithadiameterof0.2~0.4mm,andtheCODofthepetrochemicalsecondarywastewatercanbereducedfrom100mg/Ltobelow20mg/Lwithin24h.Theadsorptionbehaviorofthisresinonpetrochemicalwastewaterisclosetothatofmonolayer,andthesaturatedadsorptionamountreaches89mg/g,whichwashigherthanthecommerciallyavailableresinsD301(85.5mg/g),NDA⁃150(30.4mg/g)andXAD⁃4(58.8mg/g).OzoneoxidationregenerationresultsshowthatthesynthesizedPSresincanberecycledmorethan4times,whichhasbetterregenerationperformancethanotherconventionaladsorptionresins.Thismaterialcanbeusedasanexcellentadsorbentfortreatingpetrochemicalwastewaterinadvancedtreatmentprocessesforlow⁃concentrationwastewater.Keywords:Adsorptionresins；Emulsionpolymerization；Petro