Sewage Treatment and Disposal Options for Linton Army Camp…

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1、SEWAGETREATMENTANDDISPOSALOPTIONSFORLINTONARMYCAMPByRobDochertyPattleDelamorePartnersLimited,AucklandRobOwenDirectorateofPropertyManagement,N.Z.Army,TrenthamABSTRACTTheN.Z.ArmyoperatesamilitarybaseatLinton,5kmsouthofPalmerstonNorth.In1986anoxidationpondwasconstructedthat

2、dischargedtreatedeffluentintotheManawatuRiver.TheArmyhasbeenunderpressuretoupgradethequalityofthedischargewithparticularemphasisonloweringthenutrientfluxandpathogenloadenteringtheRiver.Overthelast8orsoyearsseveraloptionshavebeeninvestigatedincludingupgradingtheexistingtr

3、eatmentplantanddisposingoftheeffluenttoland.OneoftheoptionsinvestigatedatanearlystagewastopipethesewagefromLintontothePalmerstonNorthsewagetreatmentplant,butthisoptionhadbeendiscountedbecauseoftheperceivedtechnicaldifficultyandcostofpipingthesewageacrosstheManawatuRiverw

4、hichisabout100metresbanktobank.UponreviewoftheoptionsPattleDelamorePartnersLtdwasengagedbyN.Z.Armytoreinvestigatethepipingoptionandthiswasthenselectedfordetaileddesign.Thispaperdiscussestheoptionsthatwereinvestigated,theprojectrisksassociatedwiththemandsomeoftheareaswher

5、eaprojectcanget‘derailed’evenwiththebestintentions.Itdiscussestheoptionwhichhasbeenselectedfordetaileddesignandconstructionandsomeoftherelevanttechnicalissues.KEYWORDSSewageTreatmentandDisposal,sewagepipeline,pipebridge,sewageoptions1INTRODUCTIONTheN.Z.Armyoperatesamilit

6、arycampatLinton,5kmsouthofPalmerstonNorthwhichisthelargestmilitarycampinN.Z.andhometotherecentlypurchasedfleetofall-terrainLightArmouredVehicles.MostoftheArmy’sengineeringtrainingactivitiesareundertakenatLinton.Thecampcoversanareaof257hectaresandwasoriginallyestablishedd

7、uringWorldWarIIasamajortrainingarea.Overtheyearsithasbeensignificantlyre-developedandpresentinfrastructureisvaluedatover$146million.Operationofthecampcurrentlycontributesover$150millionannuallytothelocaleconomy.Thecampplustheadjacentvillage,ishometoabout3,000armyandcivil

8、ianpersonnelandadesignallowancehasbeenmadeforthistoincreaseinthefuturetoamaximumof5,000people.Thecampha