Designation:F2363/F2363M−12AnAmericanNationalStandardStandardSpecificationforSewageandGraywaterFlowThroughTreatmentSystems1ThisstandardisissuedunderthefixeddesignationF2363/F2363M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONShipboardtreatmentofwastewaterhasevolvedovertheyearsfromsystemsusingmacerationandchlorinationtechniquestomoreadvancedbiologicalsystemsthataredesignedtotreatasinglewastestreamofsewagefollowedmorerecentlybycomplexbio-reactorsystemsemployingadvancedoxidationandhigh-poweredUVsystemsthataredesignedtoremoveorganicandinorganicmaterialsfromacombinedwastestreamofsewageandgraywater.Advancementsintreatmenttechnologieshavebeenfueled,inpart,byshippingcompanieswantingtoadoptmoreenvironmentallyfriendlypracticesaswellasbyregulatorybodiesimposingmorestringentstandardsonwastewaterdischargesfromships.ThisstandardisaconsolidatedsourceofsewageandgraywatertreatmentsystemrequirementsthatcombinesinternationalrequirementsinMARPOLAnnexIVwithrequirementsofotherregulatorybodiesandoverlaysindustrybestpractices.1.Scope1.1Thisspecificationcoversthedesign,manufacture,performance,operation,andtestingofflowthroughtreatmentsystemsintendedtoprocesssewageorgraywater,orboth,generatedduringaship’snormalservice.Thisspecificationisintendedforusebydesigners,manufacturers,purchasers,andoperatorsofshipboardenvironmentalpollutioncontrolequip-menttodeterminetherequirementsforequipmentdesign,manufacture,purchase,andin-serviceoperation.1.2ThetreatmentsystemshallbecapableofmeetingtheeffluentrequirementsdetailedinSection4withrespecttoaship’soperationalarea.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthet...
