Australian Water Recycling Centre of Excellence National Validation Framework for Water Recycling

Transcription

1 Australian Water Recycling Centre of Excellence National Validation Framework for Water Recycling Presented by Cédric Robillot NatVal2.2 PAC Convenor - Program Manager

2 Streamlining validation Objectives of safety, consistency and cost effectiveness Development of a national validation framework to support consistent assessment of technologies Development of validation protocols and monitoring for existing and novel technologies and processes

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5 Framework establishment Phase one Phase two Framework Development (AWRCE) NatVal 2.2 NatVal 2.1 Research Program Protocol Development Group Certification Database

6 Protocol Development Group Chaired by AWRCE in the interim Composition o 2 reps from Industry (AWA Water Business Network) o 2 reps from Health Regulators (SA and VIC/TAS) o 2 reps from Utility Sector (WSAA Water Directorates) o Observers (IPART, DoE) Met 5 times in the last 12 months Objectives Establishing guidelines for validation protocols and reviewing/ approving specific validation protocols Early focus on ozone, UV and Chlorine disinfection

7 Protocol Development Group Draft validation protocol shared with researchers

8 1. identify the mechanisms of pathogen removal by the treatment process unit 2. identify the target pathogens, or appropriate surrogates, that are the subject of the validation study. Ensure that the target pathogens/surrogates are present in an appropriate concentration 3. identify the influencing factors that affect the efficacy of the treatment process unit to reduce the target pathogen 4. identify the operational monitoring parameters that can be measured continually (ideally) and that will relate with the reduction of the target pathogen 5. identify the validation methodology to demonstrate the capability of the treatment process unit

9 6. describe a method to collect and analyse data to formulate evidence-based conclusions 7. describe a method to determine the critical limits as well as an operational monitoring and control strategy 8. describe a method to determine the LRV for each pathogen group (protozoa, virus or bacteria) in each specific treatment process unit performing within defined critical limits 9. provide a means for re-validation or additional onsite validation where proposed modifications are inconsistent with the previous validation test conditions

10 Protocol Development Group Draft validation protocol shared with researchers Full ozone validation protocol developed by Melbourne Water and reviewed/endorsed by PDG Combined meeting with researchers on 14 April Focus is to get endorsement at a national level from industry, users and regulators Regulator forum meeting in Tasmania on 11 April Industry endorsement OzWater 2014 Commonwealth engagement

11 NatVal 2.2 Research Program

12 NatVal 2.2 Research Program months contracts administered by WaterRA Five subprojects o Subproject 1 - Membrane Bioreactors o Subproject 2 - Reverse Osmosis membranes o Subproject 3 - Activated sludge treatment o Subproject 4 - Multiple barriers (integrated systems) o Subproject 5 - Pathogen testing methods

13 NatVal 2.2 Research Program

14 NatVal 2.2 Research Program Team Leaders P. Le-Clech UNSW M-L. Pype UQ S. Toze CSIRO S. Khan UNSW P. Monis SA Water SP1 (MBR) SP2 (RO) SP3 (AST) SP4 (Multiple Barriers) SP5 (Testing Methods)

15 NatVal 2.2 MBR Subproject (SP1) Draft validation protocol with a key focus on step 2 pathogens and indicators Intrinsic complexity of a treatment process based on 2 mechanisms Multiple partner sites involved: Water Factory Melbourne University Bega, Cannonvale (Tenix) Pitt Town, Kangaroo Valley, Ballina etc Engagement with SP3, SP4 and SP5 to ensure consistency and develop approach to additional validation steps

16 NatVal 2.2 RO Subproject (SP2) Draft validation protocol highlighting some gaps in the science underpinning the understanding of removal mechanisms Indicators and surrogates are well understood Good progress with WaterCorp in assessing the potential of S::CAN analysers to provide additional information and broad spectrum early warning capability at a lower cost than TOC Sulphate sensor development work starting at Curtin University Engagement with SP4 to evaluate Bayesian Nets as an approach to integrate multiple inputs into a decision making and validation framework

17 NatVal 2.2 AST Subproject (SP3) Literature review and engagement with partners confirmed challenges associated with measuring removal of pathogens across the activated sludge process Focus on establishing a systematic approach to the selection of testing sites, working across a range of sizes, operational and environmental conditions Sampling started at multiple sites: TasWater WaterCorp South East Water QUU

18 NatVal 2.2 Multiple Barriers Subproject (SP4) Extensive review of validation practices in other industries and how various frameworks intersect and complement Assessment of Bayesian Nets approach to design and representation of validation strategy Desktop case study completed (Bolivar) providing retrospective yet real-life application of the statistical approach and concepts established by the team Two additional site studies being programmed Engagement with all other projects to introduce the statistical concepts and assess their applicability

19 NatVal 2.2 Methods Subproject (SP5) Literature review with a focus on viruses to support SP1 (MBR) experimental research program Data on prevalence and properties of various viruses for use as treatment performance indicators Paper for review by the PDG to confirm national acceptance of proposed indicators Method development and optimisation has just started

20 Next Ongoing research program with refinement of draft validation protocols PDG to turn attention to certification process Industry participation and communication International relevance and alignment (WRRF)

21 Thank you Presented by Cédric Robillot NatVal2.2 PAC Convenor - Program Manager