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ID:36645241
大小:2.21 MB
页数:64页
时间:2019-05-13
《造纸废水处理及工业回用研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、南京林业大学硕士学位论文造纸废水处理及工业回用研究姓名:殷承启申请学位级别:硕士专业:制浆造纸工程指导教师:洪建国2003.5.1摘要本课题在总结前人厌氧水处理技术和造纸废水回用技术的基础上,将厌氧处理工艺中的UASB技术应用于造纸废水处理中,并将其作为废水回用系统的中心处理单元,辅以粉煤灰后处理,使废水中有机物、硫酸根、碱土金属离子、重金属离子、总硬度等多类物质得到有效去除,废水能够回用于造纸生产。此类方法在国内外文献中还未见报道。根据实际情况需要,实验在对华光集团等造纸企业实地调研的基础上,对二次纤维制浆造纸废水进行了实验室模拟。实验配制的模拟废水COD达到n00mg/L,接近多数二次
2、浆造纸废水特征,UASB水力停留时间达到4.43小时,与正常工业化运行的反应器一致,并由此得到UASB容积负荷约6.0kgCOD/(m3-d),这些参数可以满足华光集团等二次纤维制浆造纸企业的实际情况。实验重点观察了UASB系统启动和处理模拟造纸废水的运行情况,通过对水温、出水vFA浓度、出水碱度等指标的监测,及时调整UASB反应器的运行负荷,补充N、P及微量元素,使系统保持了较高的处理效率,UASB稳定运行时可去除90%以上的COD,50%以上的总硬度以及80%以上的硫酸根离子。影响UASB处理效果的主要因素有温度、营养物质和污泥与基质的接触程度。特别是温度,与UASB产气速率关系密切,
3、分析发现二者符合Arrhenius方程,并可以表达为:,s前1/4、.339/L就可使UASB出水色度降至15度,即可达至q饮用水卫生标准(GB549—85)。粉煤灰对色度的去除效果满足Freundlich关键词:造纸废水,工业废水回用,UASB,粉煤灰利用TheTreatmentandReuseofPapermakingWastewaterABSTRACTSAccordingtothesummaryofthetechniquesoftheanaerobicwatertreatmentandthereuseofthewastewaterfrompapermaking,theUp-flowAnaerobicSludgeBed(UASB)wasusedtotr5、eatthewastewaterfrompulpandpapermakingwithrecycledfiberinthisresearch.TheUASBwasusedasthecentralunitofthesystem,andthecoalflyashwassettledtotreattheeffluentfromtheUASB.Inadditiontoorganicsubstance,manyspeciesofcontaminantswereremovedbythissystem,suchasgroupS042’,ionsofalkalineearthmetalandheavymet6、al,andtotalhardnesseta1.Afterthetreatment,thewastewatercouldberecycledintotheproductionofpapermaking.Becausethetreatmentsystemwasoperatedinlaboratory,simulatedwastewaterwasconfectedaccordingtotheinvestigationofpapermakingprocessinseveralcompanies.TheCODofsimulatedwastewaterwasabout1100mg/L.whichwa7、sclosethepropertyofthewastewaterofmostpapermillsusingrecycledfiber.TheHRTofUASBreactorwasabout4.43h。whichwasacoordwithmostUASBplants.Duringtheresearch,thestartingupandoperatingprocessoftheUASBreactorwereobserved.
4、.339/L就可使UASB出水色度降至15度,即可达至q饮用水卫生标准(GB549—85)。粉煤灰对色度的去除效果满足Freundlich关键词:造纸废水,工业废水回用,UASB,粉煤灰利用TheTreatmentandReuseofPapermakingWastewaterABSTRACTSAccordingtothesummaryofthetechniquesoftheanaerobicwatertreatmentandthereuseofthewastewaterfrompapermaking,theUp-flowAnaerobicSludgeBed(UASB)wasusedtotr
5、eatthewastewaterfrompulpandpapermakingwithrecycledfiberinthisresearch.TheUASBwasusedasthecentralunitofthesystem,andthecoalflyashwassettledtotreattheeffluentfromtheUASB.Inadditiontoorganicsubstance,manyspeciesofcontaminantswereremovedbythissystem,suchasgroupS042’,ionsofalkalineearthmetalandheavymet
6、al,andtotalhardnesseta1.Afterthetreatment,thewastewatercouldberecycledintotheproductionofpapermaking.Becausethetreatmentsystemwasoperatedinlaboratory,simulatedwastewaterwasconfectedaccordingtotheinvestigationofpapermakingprocessinseveralcompanies.TheCODofsimulatedwastewaterwasabout1100mg/L.whichwa
7、sclosethepropertyofthewastewaterofmostpapermillsusingrecycledfiber.TheHRTofUASBreactorwasabout4.43h。whichwasacoordwithmostUASBplants.Duringtheresearch,thestartingupandoperatingprocessoftheUASBreactorwereobserved.
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