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1、聚合氯化铝的技术指标(Technicalindicatorsforpolymerizationofaluminumchloride)Thecontentofaluminainpolymerizedaluminumchlorideisthemeasureoftheeffectivecomponentoftheproduct.Ithasacertainrelationshipwiththerelativedensityofthesolution.Generallyspeaking,thehighertherelativedensity,
2、thehigherthealuminacontent.Theviscosityofaluminumchlorideisrelatedtoaluminacontent,andtheviscosityincreaseswiththeincreaseofaluminacontent.Underthesameconditions,theviscosityofaluminiumchlorideunderthesameconcentrationofaluminaislowerthanthatofaluminumsulfate,whichismo
3、refavorablefordeliveryanduse.Base:Thedegreeofhydroxylationoralkalizationofsomeformofpolyaluminiumchlorideiscalledthedegreeofsaltoralkalinity.TheratioofhydroxyaluminatoB=[OH]/[Al]isgenerallyexpressed.Thesalt-basedegreeisoneofthemostimportantindexesofpolymerizedaluminumc
4、hloride,andhasaverycloserelationshipwithflocculation.Thehighertheoriginalwaterconcentration,thehigherthesalinity,thebettertheflocculationeffect.Inconclusion,intherangeoftheoriginalwaterturbidityof86~10000mg/L,theoptimumsaltbasedegreeofthepolymerizationofaluminumchlorid
5、eis40%~85%,andmanyotherpropertiesofaluminumchloridearerelatedtothebasedegreeofthesalt.PH:ThepHofaluminumchloridesolutionisalsoanimportantindex.ItrepresentstheamountofOHminusthenumberoffreestatesinthesolution.ThepHvalueofpolymerizedaluminumchlorideusuallyincreaseswithth
6、eincreaseofthebasedegreeofthesalt,butthereisnocorrespondingrelationshipbetweenthepHvalueandthebasedegreeoftheliquid.Aliquidwiththesamesaltbaseconcentration,whentheconcentrationisdifferent,hasadifferentpHvalue.Polyaluminiumchlorideandthetraditionalinorganiccoagulantsthe
7、fundamentaldifferencebetweenthetraditionalinorganiccoagulantsaslowmolecularcrystalsalt,andthestructureiscomposedofformandchangeablemultiplecarboxylcomplex,flocculatingsettlingspeed,suitableforwidePHrange,nocorrosivetothepipelineequipment,waterpurificationeffectisobviou
8、s,tobeeffectiveintheremovalofwatercolorqualitySS,COD,BODandarsenic,mercuryandotherheavymetalions,theproductsarewidely