An Industrial Water Impact Index case study - Veolia Water Solutions ...

Technological innovation is not the only special aspectof this project. Cutting edge thinking also underscoredCONSOL’s approach to project execution. After reviewingmany options CONSOL selected a design build operate(DBO) project delivery approach. The approach providesa complete scope of services and maintains long termresponsibility for performance through a single solutionssupplier, in this case Veolia. The cornerstone of DBOproject delivery is Veolia’s ability to take full responsibilityfor design, installation, and performance. DBO servicesare provided to maintain performance at the designbasis, including capacity, effluent quality, availability,design build expense, operations expense, and projectschedule. On the performance end, Veolia provides adedicated management, operations and maintenancestaff providing 24/7 coverage, operations, preventiveand corrective maintenance, and chemicals and residualsdewatering. Together these commitments are deliveredthrough a performance guarantee that is contractuallysupported by Veolia for the complete term of the project.CONSOL is protected from any shortcomings in plantperformance, which are now the responsibility of Veolia.Assessing the Effect on the Water Resource:the Water Impact IndexMost water footprint assessments focus on volume, avalid indicator to raise awareness but not necessarilysufficient to represent the impact on a water resource. Inthis particular case, measuring only water quantity wouldbe misleading in that influent and effluent quantities arenearly equal, as depicted below. The influent volumesare projected to be 3,505 gpm or 1.840 billion gallons peryear, and the corresponding effluent volumes are 3,490gpm or 1.835 billion. This is essentially the same amount ofwater as CONSOL currently discharges from these mines.Consequently, an assessment based on volume alone doesnot accurately reflect the benefit to the water resourcefrom this project.Recognizing that water footprint assessments based onvolume alone were no longer adequate, researchers atVeolia embarked on the development of an assessmenttool that incorporates multiple variables that areimportant to the viability of the local water resource.In addition, Veolia wanted to develop an indicator that canRecognizing that water footprint assessments based on volume alone were no longeradequate, researchers at Veolia embarked on the development of an assessmenttool that incorporates multiple variables that are important to the viability of thelocal water resource. The result of Veolia’s effort is the Water Impact Index.Veolia Integrated SolutionTreatment FacilityRaw WaterFeedTankAerationCrystallization TankClarifierMultimediaFilterR.O. FeedTankR.O.Product WaterFinalEffluentTankBlacksville No. 2Loveridge3505 gpmAL PrecipitationSludge HoldingTankDewateringEquipmentEvaporatorFeed TankCrystallizationTankClarifier3490 gpmRobinson RunSolidsEvaporatorCrystalizerFeed TankSolidsDewateringEquipmentCrystalizerThe results ofa volume-basedmeasurementLandfillMannington•MonongahelaBasin3A WHITE PAPER BY VEOLIA WATER