Innovations In Water Recycling - New WAter Ways

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Innovations in Water RecyclingRichard TheobaldManagerWater Unit

Legislation (Sewage/Recycling) Health Act 1911 Requires sanitary facilities in houses Provision for Sewerage Schemes (LGA or others) Sewer connection requirements rating Products assessment and approval Biosolid disposal/reuse Health Treatment of Sewage and Disposal of Effluent andLiquid Wastes) Regulations 1974 Design build and installation

Sewage Any thing or matter of sewage, nightsoil, faecal matter orurine, and any waste composed wholly or in part of liquid.

Recycled Water Any form of Ex-human use. E.g. Greywater, industrial wastewater, sewage, yellow &black water. Applies to single residential owner consumers. Includes design and build of distribution & treatmentsystems. NH&MRC Phase 1 and /or 2 (Full risk application).

Water Recycling(The water view)

Water Recycling(The health view)Drinking WaterFoodSwimming PoolsSurface WaterGround WaterRecreational WaterSoilHumansSewage

Major waterborne pathogens causingdiarrhoeal disease since 1972Year IdentifiedPathogenComments on disease1972Small round structured virus(SRSVs, calciviruses)Rapid onset acute diarrhoea oftenassociated with vomiting in youngerpatients1973RotavirusInfantile diarrhoea often endemic indeveloping world1976Cryptosporidium parvumProfuse water diarrhoea, important forwater borne outbreaks due to chlorineresistance.1977Campylobacter spp.Acute diarrhoea sometimes bloody1983Escherichia coli O157:H7Acute often bloody diarrhoea, haemolyticuremic syndrome (HUS)1992Vibrio cholerae O139:H7New strain of epidemic cholera

Cryptosporidium – Milwaukee, 1993More than 4,000 people filed notices ofinjury with the city, 1,400 filed claimsseeking damages of 25 million. Thecity ultimately settled for 100,000,General Chemical Corp., the watertreatment chemical manufacturer,settled for 1.5 million.Unwell.403,000Doctor visits.44,000Hospitalised.4,400Deaths.more than 100Lost work or school days.725,000Lost wages & medicalexpenses. 96 millionNew water purificationsystem. 90 millionSlide 8

National Water Quality Management StrategyNWQMS Policies & Principles (1994)Groundwater Protection (1995)Water QualityMonitoring (2000)Fresh and MarineWater Quality (2000)Drinking Water (2004)Water Recycling – Phase 1 (2006)Water recycled from effluent, greywaterWater Recycling – Phase 2 (2007/8)Recycled Waterfor Drinking (2a)Managed AquiferRecharge (2c)Storm Water (2b)

12 ElementsCommitment to responsible use andmanagement of recycled waterSystem Analysis &Management2. Assessment of therecycled water system3. Preventative Measures forrecycled watermanagement4. Operational Procedures& Process Controls5. Verification of recycledWater Quality6. Incident & EmergencyManagementSupporting Requirements7. Employee awareness& training(7)8. Communityinvolvement& awareness (8)9. Research& development (9)10. Documentation &Reporting (10)Review11. Evaluation& audit12. Review &continualimprovement

DOH Approval processStepGuideline / RWQMP Section1. Contact DOH to discuss fit for purposerequirements and exposure risk levelbased on source water and intendedend-use(s)2. Evaluate scheme feasibilitySection 3: Common uses of recycled waterSection 4: Planning for recycled water use3. Complete and submit application form.Include a prelimnary scheme designSection 5: Risk Assessment and ManagementSection 1,2,4 and 5 of the RWQMPAppendix 1: Application FormApproval to install the recycled watertreatment plant is granted by WA Health4. Complete Commissioning Validation andVerification Report. Submit updatedRWQMPApproval to use is granted after DOHis satisfied with the RWQMP andCommissioning Validation andVerification Report5. Implement the 12 elements frame workof the National Guidelines including thepreparation of the annual reportsSection 6: Monitoring of recycled water systemsUpdate relevant sections of the RWQMPSection 5: Risk assessment and managementSection 6: Monitoring of recycled water systemsSection 7: ManagementSection 8: Awareness and TrainingSection 9: Operational reporting and auditingSection 10: Review and continuous improvementSections 1 to 11 of the RWQMP

Standard Requirements Community Information packages (ongoing).Failsafe systems/backflow prevention devices.AS 3500 Compliance.Crossover responsibility/contracts.Distribution system maintenance.Plumber/Operator competency/training.Risk Identification (HACCP) & Catchment Management.Monitoring, management, maintenance and response systems.Alternate/Recycled Water Quality Management Plan.

iAssemble teamiiDescribe productIdentify hazards andassess risk1iiiDescribe productDetermine criticalcontrol points2ivConstruct flowdiagramEstablish critical limits3vConfirm flow diagramDetermine monitoringrequirements4Establish correctiveactions5Establish verificationprocedures6Establishdocumentation andreporting7PrinciplesPreliminary StepsHACCP Process

Question 1: Do preventive measures exist to reduce the hazard / risk toan acceptable level?NOIdentify preventivemeasuresNONot a criticalcontrol pointNONot a criticalcontrol pointNONot a criticalcontrol pointYESQuestion 2: Is the preventive measure specifically designed tosubstantially reduce the risk presented by the hazard?YESQuestion 3: Can operation of the preventive measure be monitored andcorrective actions be applied in a timely fashion?YESQuestion 4: Would failure of the preventive measure lead to immediatecorrective action or possible cessation of supply?YESCritical Control Point

What is in a RWQMP ? Introduction – System Description Roles and responsibilities Water Quality Objectives System Assessment (Critical Control Points) Validation Operational Monitoring & Process Controls Verification (Assessable Monitoring) Supporting Programs Incident and Emergency Management Employee Awareness/training Document Control/Reporting Audit/Review/Improvement

raft RWQMP Template WA Health(v1).doc

Monitoring Baseline – Information that underpins the risk assessment process Validation – Evidence to prove the recycled water qualitymanagement plan will work Operational – continual operational monitoring using surrogates On line monitoring using surrogates (e.g. turbidity, total organic carbon) (e.g. disinfectant residuals, UV light transmission). Critical limits - 24hr monitoring alarms. Assessable monitoring to prove compliance. Verification – end product monitoring for individual healthparameters based on system risk analysis.

InstallationCommenceLive OperationMonitoringPreapproval StageApproved SystemCommissioning validation& verification monitoringVerification monitoring (at set intervals)Validation monitoring (as required)Operational Monitoring Ongoing

Water Risk RankingsExposure RiskLevelHighhumancontact levelPotential End UsesResidential dual reticulation (exposed to air), Multi-unitdwellings, Public toilets, internal use (toilets/dedicatedlaundry)Agricultural irrigation – unprocessed foods (e.g. salad crops)Urban irrigation with unrestricted access and applicationMediumUrban irrigation - some restricted access and applicationFountains and water featuresIndustrial use with potential human exposureLowResidential sub-surface irrigationUrban irrigation with enhanced restricted access andapplicationAgricultural irrigation; processed foodsExtra LowWoodlots, Subsurface reticulation (non-food crops)

Recycled Water Compliance/ReportingExposure RiskLevelCompliance IndicatorsReporting RequirementsHigh E.coli ( 1cfu/100ml)Turbidity ( 2 NTU)pH (6.5-8.5)DisinfectionColiphage ( 1pfu/100ml)Clostridia ( 1cfu/100ml) WeeklyContinuous OnlineContinuous OnlineContinuous OnlineMonthlyMonthlyMedium E.coli ( 10cfu/100ml)TurbidityDisinfectionpH MonthlyContinuous OnlineContinuous OnlineContinuous OnlineLow E.coli ( 1000cfu/100ml)SSDisinfection if usedpH MonthlyMonthlyContinuous OnlineContinuous OnlineExtra Low E.coli ( 10,000cfu/100ml) 6 Monthly

Water Recycling Assessment Reports

Greywater Reuse Options Bucket Greywater Diversion Device (GDD) Greywater Treatment System (GTS)

Greywater Reuse Options

Guidance for Garden Irrigation

Examples of approved GDD’sNylex GDDGreymateG-NovaMatala GatorGreyFlow

Sub-surface irrigation for GDD

Examples of approved GTS’sOasis GT600Novagrey

Product certification Standards Australia: AS 1319 Safety signs for the occupational environment AS 1345 Identification of the contents of pipes, conduits andducts AS 2700 Colour Standards for general purposes AS 1546.1 Onsite Domestic Wastewater Management – Septictanks AS/NZS 1547 Onsite Domestic wastewater management AS/NZS 3500 Plumbing and drainage – Water Services ATS 5200 Technical Specifications for plumbing and drainageproducts – Procedures for certification of plumbing and drainageproducts ATS 5200:460 Technical Specification for plumbing and drainageproducts – Greywater Diversion Device (GWDD) HB 326 – 2008 Urban Greywater Installation Handbook for SingleHouseholds

Recycle Schemes & Systems Established schemes Local Government – 92 In the last 3 years Applications – 103 Approved to install – 26 Approved to use – 56 Not approved - 21

LocationTypeApprovedLocationTypeApproved140 WilliamGW/ IntYesCity SquareGREYYesAlbanyTWS/ IrrYesCoolgardie ShireTWS/POSYesAlcoa KwinanaTWS/ ProcYesCorrigin ShireTWS/POSYesAlcoa PinjarraTWS/ ProcYesDevil CreekTWS/ProcInPAlcoa WagerupTWS/ ProcYesDongara GolfTWS/POSYesAlkimosTWS/ 3rdNoDonnybrook SchemeTWS/POSYesAtlas Iron PardooTWS/ procYesEast PilbaraTWS/POSYesAtlas Iron WodginaTWSInPEsperance ShireTWS/POSYesBarrow IslandTWS / ProcYesExmouth ShireTWS/POSNoBellevue Truck WashWW/ ProcYesFinucane IslandTWS/IntNoBeverley ShireTWS/ POSInPFleetwood KarrathaBlack Cat MineTWS/ProcInPFMG RailTWS/POSInPBoart LongyearProcYesGap Ridge KarrathaTWS/POSBoddingtonTWS/ POSBridgetown ShireTWS/ POSYesHalls HeadTWS/POSYesBroome NorthTWS/ dustNoJabiru MetalsTWS/POSNoBusselton GolfTWS/ POSYesKalgoorlie BoulderTWSYesKarnet PrisonTWS/IrrKatanning ShireTWS/POSTWS/POSInPMandurah SchemeCaddadup SchemeCanning LeisureWW/IrrCape Lambert Port BTWS/ProcYesKingfisher StayoverCapel WetlandsTWS/POSYesKulin ShireCarina MineTWS/POSNoKwinana IndustryTWS/ProcYesCaversham WineryTWS/POSNoLanfranchi NickelTWS/ProcInPChristmas CreekTWS/POSYesMagellan MineTWS/ProcInP

City Square BuildingGrey Water Reuse

Capel Wetlands

Alcoa Alcoa Gordon road to Kwinana residue area cooling pond Caustic 2.5g/L pH 10

Bellevue Industrial Area Truck Wash 5Kl/day, Benzene, toluene, Ethylbenzene, xylene, oilsand grease using%20recycled%20water.pdf

Dongara Golf Course

Finucane Island

Yongah Hill Detention Centre

Kalgoorlie Boulder

Margaret River Scheme

Subiaco Standpipe Landscape irrigation and construction Recycled water supply agreement with users

Rio ROC Perth Airport Greywater reuse system for toilet flushing

So Where Are We Now Opportunistic abstraction of ground water – Done/2nd review Single residential rainwater augmentation – Done Communal residential rainwater – Done Recycled (waste) water ex house and restricted use – Done Recycled (waste) water in house – Done Stormwater – On hold Aquifer storage and recovery – On hold Managed Aquifer Recharge for Human consumption - Beenyup

What is still to be done Legacy issues and compliance with the new Guidelines. Legislation Other indicator organisms for non membrane systems. E.g. Coliphage, Clostridia, Giardia and Cryptosporidium. Acceptance of indicators and surrogates E.g. rhodamine for coliphage Establishment of monitoring and reporting systems toadequately cater for multiple small systems. National accreditation, validation and approval system Training competency requirements (e.g. plumbers, irrigators, installers, operators) Chemistry & Microbiology capacity/accuracy/timeliness

Web Links: Department of Health WA http://www.public.health.wa.gov.au Australian Guidelines for Water Recycling http://www.ephc.gov.au/taxonomy/term/39 Guidelines for the Non-Potable Uses of Recycled Water in WesternAustralia uidelines%20for%20the%20Nonpotable%20Uses% Recycled Water Sampling Techniques ecycled%20Water%20Sampling%20Technique.pdf DOHWA Recycling schemes application form es.doc Code of Practice for the Reuse of Greywater in Western Australia OP%20Gretwater.pdf

Questions

Water Recycling - Phase 1 (2006) Water recycled from effluent, greywater Water Quality Monitoring (2000) Water Recycling - Phase 2 (2007/8) Recycled Water for Drinking (2a) Managed Aquifer Recharge (2c) Storm Water (2b)

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