Saudi AramcoSaudi AramcoSaudi Aramco

Wastewater Conservation & ReuseWastewater Conservation & Reuse

AgendaAgendaAgenda

•• Saudi Aramco Environmental PolicySaudi Aramco Environmental Policy•• Conservation EffortsConservation Efforts•• Practical Examples of WorkPractical Examples of Work

–– Low TechLow Tech–– High TechHigh Tech

•• Reuse Performance / DirectionReuse Performance / Direction•• Conclusion / SummaryConclusion / Summary

Saudi Aramco Env. PolicySaudi Aramco Saudi Aramco EnvEnv. Policy. Policy

““The Company will The Company will ……. Promote . Promote environmentally sound waste disposal environmentally sound waste disposal practices and cost effective waste practices and cost effective waste minimization through source reduction, minimization through source reduction, reuse and recycling.reuse and recycling.””

Conservation MandateConservation MandateConservation Mandate•• First ConserveFirst Conserve

–– Waste Minimization AuditsWaste Minimization Audits–– Water Conservation AuditsWater Conservation Audits

•• Treat & ReuseTreat & Reuse–– Sanitary WastewaterSanitary Wastewater–– Industrial / Oily WastewaterIndustrial / Oily Wastewater

•• Dispose AppropriatelyDispose Appropriately

Economic Evaluation - BasisEconomic Evaluation Economic Evaluation -- BasisBasis

•• Groundwater is a Limited ResourceGroundwater is a Limited Resource–– Value = Cost of Desalinated Sea WaterValue = Cost of Desalinated Sea Water

•• ~$10 / 1000 gallons~$10 / 1000 gallons

Water Conservation AuditsWater Conservation AuditsWater Conservation Audits

•• Gas Plant Industrial Reuse AuditGas Plant Industrial Reuse Audit–– Quantified all Water UsesQuantified all Water Uses

•• Evaluated Water Quality Requirements Evaluated Water Quality Requirements •• Mapped Water Use LocationMapped Water Use Location

–– Quantified all Water DisposedQuantified all Water Disposed•• Evaluated Disposed Water QualityEvaluated Disposed Water Quality•• Mapped Water Disposal LocationMapped Water Disposal Location

–– Identified Acceptable Identified Acceptable Low TechLow Tech Reuse Reuse –– Economic EvaluationsEconomic Evaluations

TreatmentWastewater

RO Reject

BoilerBlowdown

Cooling Tower Blowdown

Oily Wastewater

Sanitary WW

Water Uses

Disposal

Fire Water Make-up

Cooling Tower Make-up

Raw Water

IrrigationMBR

Blending

Low Technology Reuse / Disposal OptionsLow Technology Reuse / Disposal Options

Typical Plant ArrangementTypical Plant ArrangementTypical Plant Arrangement

Acceptable Low Tech Reuse MatchesAcceptable Low Tech Reuse MatchesAcceptable Low Tech Reuse Matches

Fire Water MakeupFire Water MakeupCooling Tower Cooling Tower BlowdownBlowdown

IrrigationIrrigationSanitary WastewaterSanitary Wastewater

Raw Water Makeup / Raw Water Makeup / IrrigationIrrigation

RO RejectRO Reject

Raw Water Makeup / Raw Water Makeup / IrrigationIrrigation

Boiler Blow downBoiler Blow down

Potential ReusePotential Reuse(Minimal Treatment)(Minimal Treatment)

Wastewater SourceWastewater Source

WW Reuse – New High Tech OptionsWW Reuse WW Reuse –– New High Tech OptionsNew High Tech Options

•• JGP Industrial WW ReuseJGP Industrial WW Reuse–– Combine Sanitary & Oily WastewaterCombine Sanitary & Oily Wastewater–– API & Walnut Shell FiltersAPI & Walnut Shell Filters–– MBR Treatment (carbon assisted)MBR Treatment (carbon assisted)–– RO to Provide Boiler Feed WaterRO to Provide Boiler Feed Water

•• Annual Cost Savings > $1 MMAnnual Cost Savings > $1 MM

Sour WaterStripper

BoilerBlowdown

Fire Training Wastewater

Oily Wastewater

Sanitary WW

Disposal

Boiler Feed Water

Irrigation

Walnut Shell Filters MBR & RO

JGP JGP –– Carbon Assisted MBR & ROCarbon Assisted MBR & RO

WW Reuse Performance / DirectionWW Reuse Performance / DirectionWW Reuse Performance / Direction•• Sanitary WastewaterSanitary Wastewater

–– 72% Reused72% Reused–– Projects to raise to over 94%Projects to raise to over 94%

•• All WW Treatment Systems > 100 m3/dayAll WW Treatment Systems > 100 m3/day

•• Oily WastewaterOily Wastewater–– Most Discharged to Evaporation PondsMost Discharged to Evaporation Ponds–– Moving to Beneficially ReuseMoving to Beneficially Reuse

•• Oil Field Pressure MaintenanceOil Field Pressure Maintenance•• High Tech Oil Removal & MBRHigh Tech Oil Removal & MBR

ConclusionConclusionConclusion

• Water Conservation Goals –– Appropriately Value WaterAppropriately Value Water–– Minimize Consumption & Maximize ReuseMinimize Consumption & Maximize Reuse

•• Water AuditsWater Audits–– Low & High Tech Reuse OptionsLow & High Tech Reuse Options

•• Provide Acceptable Treatment for Provide Acceptable Treatment for DischargesDischarges–– Moving to Beneficial Reuse OptionsMoving to Beneficial Reuse Options

Thank YouThank YouFor Your For Your

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