Designation:D2035−13StandardPracticeforCoagulation-FlocculationJarTestofWater1ThisstandardisissuedunderthefixeddesignationD2035;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversageneralprocedurefortheevalu-ationofatreatmenttoreducedissolved,suspended,colloidal,andnonsettleablematterfromwaterbychemicalcoagulation-flocculation,followedbygravitysettling.Theproceduremaybeusedtoevaluatecolor,turbidity,andhardnessreduction.1.2Thepracticeprovidesasystematicevaluationofthevariablesnormallyencounteredinthecoagulation-flocculationprocess.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.1.4Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD1293TestMethodsforpHofWaterD3370PracticesforSamplingWaterfromClosedConduitsD6855TestMethodforDeterminationofTurbidityBelow5NTUinStaticModeD7315TestMethodforDeterminationofTurbidityAbove1TurbidityUnit(TU)inStaticMode3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthispractice,refertoTerminologyD1129.4.SummaryofPractice4.1Thecoagulation-flocculationtestiscarriedouttodeter-minethechemicals,dosages,andconditionsrequiredtoachieveoptimumresults.Theprimaryvariablestobeinvesti-gatedusingtherecommendedpracticeinclude,butarenotlimitedto:4.1.1Chemicaladditives,4.1.2pH,4.1.3Temperature,and4.1.4Orderofadditionandmixingconditions.5.SignificanceandUse5.1Thispracticepermitstheevaluationofvariouscoagu-lantsandcoagulantaidsusedinthetreatmentofwaterandwastewaterforthesamewaterandthesameexperimentalconditions.5.2Theeffectsofconcentrat...
