造纸法烟草薄片废水混凝预处理研究
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2020-02-02 09:53:16
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研究论文·废水处理·作者简介:王玉峰先生,在读博士研究生,工程师;主要研究方向:制浆造纸清洁生产与污染控制。造纸法烟草薄片废水混凝预处理研究王玉峰1,2,3陈克复1,2莫立焕1,2周志明1,2(1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640;2.华南理工大学植物资源化学与化工联合实验室,广东广州,510640;3.广东省东莞市质量监督检测中心国家纸制品质量监督检验中心,广东东莞,523080)摘要:以聚合氯化铝(PAC)和聚合硫酸铁(PFS)为混凝剂,4种不同类型的聚丙烯酰胺(PAM)为助凝剂,对造纸法烟草薄片废水进行混凝处理,分别考察了pH值、混凝剂用量、助凝剂用量对混凝效果的影响。结果表明,PAC与PFS对COD、氨氮和悬浮物(SS)去除率效果相当,但PAC的脱色效果更佳。相对分子质量700万、离子化度为15%的阳离子聚丙烯酰胺(PAM4)与PAC的复配体系具有最佳的混凝效果,在pH值为6.5、PAC用量为500mg/L、PAM4用量为5mg/L的优化工艺条件下,COD、氨氮、色度和SS去除率分别为70.8%、84.8%、72.3%和98.5%。废水的铝含量分析表明,该体系非但没有产生残留铝,而且大幅去除了原水中的铝。处理后废水的紫外吸收光谱表明,有机物含量降低。关键词:造纸法烟草薄片废水;混凝;聚合氯化铝;聚合硫酸铁;聚丙烯酰胺中图分类号:X793文献标识码:A文章编号:0254-508X(2012)02-0035-05收稿日期:2011-09-26基金项目:国家重点基础研究发展计划(973计划,2010CB732205)。Coagulation-flocculationTreatmentofWastewaterfromReconstitutedTobaccoSheetManufacturingbyPapermakingProcessWANGYu-feng1,2,3,*CHENKe-fu1,2MOLi-huan1,2ZHOUZhi-ming1,2(1.StateKeyLabofPulpandPaperEngineering,SouthChinaUniversityofTechnology,Guangzhou,GuangdongProvince,510640;2.UnitedLabofResourceChemistryandChemicalEngineering,SouthChinaUniversityofTechnology,Guangzhou,GuangdongProvince,510640;3.NationalPaperProductsQualitySupervisionInspectionCenter,GuangdongDongguanQualitySupervisionTestingCenter,Dongguan,GuangdongProvince,523080)(*E-mail:ppcwyf@yahoo.com.cn)Abstract:Thecoagulation-flocculationmethodwasusedforthetreatmentofwastewaterfromreconstitutedtobaccosheetmanufacturingbypapermakingprocess.polyaluminumchloride(PAC)andpolyferricsulfate(PFS)wereusedascoagulants,fourkindsofpolyacrylamidewereusedascoagulantaids.Theeffectsofthreefactors,i.e.thedosageofcoagulants,thedosageofcoagulantaidsandpHonthetreatmentefficiencywereevaluated.TheefficienciesofPACandPFSonCODremoval,ammonianitrogenremovalandsuspendedsolids(SS)removalweresimilar,buttheefficiencyofPAConcolorremovalwasobviouslyhigher.CationicpolyacrylamidePAM4withveryhighmolecularweightandlowchargedensitycoupledwithPACwasfoundtogivethehighestcoagulation-flocculationefficiency.AttheoptimumpHof6.5,theoptimumPACdosageof500mg/L,andtheoptimumPAM4dosageo
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