铝工业废水零排放水质稳定技术研究

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1、同济大学环境科学与工程学院硕士学位论文铝工业废水零排放水质稳定技术研究姓名：朱亚平申请学位级别：硕士专业：市政工程指导教师：张玉先20080301AbstractABSTRACTIndustrializeddevelopmentcausesthewaterresourcestobeintensedaybyday,reasonablyduplicatingthewaterisaimportantwaytosolvetheproblem．Forsavingwater,simultaneouslyreducingtheenvironmentalpo

2、llution，manyindustrialenterprisehadimplementedthewastewaterzerodrainageproject．ChinaAluminumGuizhouSubsidiaryCompany(hereafterreferredtoastheGuizhouAluminumManufacturer)isthefristtoimplementtheindustrywastewaterzreodrainageinthealuminumproductionandprocessingprofession．Rese

3、archobjectiveistodeterminefactorofpipelinescalingandcorrosion，findinfluenceofsensitiveindicatorstowaterqualityandstability,putforwardthestablesolutiontothewaterqualityanddotestingandcertificationthroughGuizhouAluminumPlantrecyclingwaterqualitytestsandstudies．Sothatproductio

4、nofrecycledwaterwillmeetthewaterqualityrequirementstoensurethatwaterequipmentisnoteasilyblocked，corrosion，scalingandinfluentedbysensitiveindexfluctuations，andensurethatproductionofthenormaloperationoflong-termstability．Inthepieceexperiment，metallinepieceswerehangedinmainpip

5、elinesofthealuminaplant，thepowerplantandthethermalpowerplant，thenscalingandcorrosionsituationofthethreeplantswerecomparedintheend．Mainwaterharmfulofthealuminaplantliedinthepipelinescaling,mainwaterharmfulofthethermalpowerplantliedinthepipelinecorrosion,whilethoseofpowerplan

6、tdidn’thaveobviouscorrosionandscalingphenomenon．Accordingtopieceexperimentandscaletestresults，aluminaplantscalesampleshowsthemainpipelinescaleiscarbonate，andidentifidthemainreasonforscalingishighalkalinityinaluminawaterandhighhardnessofthewateradded．Thesolutionistocollectth

7、eoriginalandaddedwaterofaluminatogetherintothesedimentationtaI此thenbetreat．TestdeterminedcoagulantisPACwithamountof6mg／L，flocculantisSi-sodium诵tlldosageof10mg／L,reactiontimeis60S．Onthisbasis，theoriginalsedimentationtankispartlytransformedtorampsettingtank，the——．．垒!!!翌竺fores

8、idesupplementsmicromeshreactionzone，theafterportionsetsuprampsedimentationwall，SOa