3 Anabela Rebelo APA - CEWP files... · 2019. 12. 20. · Microsoft PowerPoint - 3 Anabela Rebelo...
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Main drivers for Water Reuse in Portugal Anabela Rebelo, PhD
Transcript of 3 Anabela Rebelo APA - CEWP files... · 2019. 12. 20. · Microsoft PowerPoint - 3 Anabela Rebelo...
Main drivers for Water Reuse in Portugal
Anabela Rebelo, PhD
Portugal
Water Scarcity:Water Exploitation Index(reason between water abstractionand long term anual average resource)
Water Use: New vision
Water treatment
(according uses and
needs)
Urban use
Agriculture
Industry
other
Wastewater
Wastewater treatment
Surface water
Groundwater
Water ReuseWater
Water resources replenishment
Support ecosystems
Recreational uses
“Use of treated wastewater for beneficial use”
Water for Reuse
Water reuse & Circular economy
Water Reuse
& Circular
Economy
• Replenishment of water bodies and their ecosystems:• Promotes quantity:
Freshwater consumption reduction
• Promotes quality: Decrease the loads discharged over water bodies
• Energy savings• Recovery of nutrients and
other materials• Integration of water services
with natural services• Technology development
(water treatment/analytical methodologies)
Water Reuse for non potable uses: PT New legislation
Water Reuse: PT New legislation
Sources (TWW)
UrbanUrban
DomesticDomestic
IndustrialIndustrial
Other (e.g. irrigation runoff)
Other (e.g. irrigation runoff)
System types
Centralized (production
systems from UWW)
Centralized (production
systems from UWW)
Decentralized (non UWW) / Own uses / Symbiosis between
industries
Decentralized (non UWW) / Own uses / Symbiosis between
industries
Runoff Symbiosis (Symbioses
between different crop production)
Runoff Symbiosis (Symbioses
between different crop production)
Uses/
Requirements
Multiple non potable uses
(irrigation, industrial uses,
ecosystem support…)
Multiple non potable uses
(irrigation, industrial uses,
ecosystem support…)
Defined on fit-for-purpose base
supported on the results of the risk
assessment
Defined on fit-for-purpose base
supported on the results of the risk
assessment
Project/Risk Assessment
Project complexity/ dimension +
“sensitivity/vulnerability” of the end-use and risk receptors
Project complexity/ dimension +
“sensitivity/vulnerability” of the end-use and risk receptors
Risk assessment: Heath + Environment
Risk assessment: Heath + Environment
Health authority (all projects)
Health authority (all projects)
Agriculture auth.: Agriculture/Forest
irrigation
Agriculture auth.: Agriculture/Forest
irrigation
Literature Base
• Agriculture: Proposal for the EU Regulation and JRC Report onMinimum Quality Requirements
• ISO Standards on irrigation, urban uses, risk assessment andvocabulary (all standards published from 2015 to 2018)
• WHO guidelines
• Examples of Best Practices (E.g. IMPEL Project “IntegratedWater Approach & Urban Reuse)
• Research projects on water reuse, Contaminants of Concern inUWW, Treatment technologies
• Plan of Action for Circular Economy
Water quality that meets
the needs of the intended
end-users and the
surrounding environment
Fit-for-PurposeFit-for-
PurposeRisk
assessmentSupportSupportAssociated
risk minimization
Multi barrierMulti
barrier
Water Reuse: Approach to ensure safety
Permits in Portugal
• Centralized Systems
Permit to produce
Permit to use
• Decentralized Systems
Permit to produce and
use
Formal opinion by Health and Agriculture authorities
(agriculture uses)
Symbiosis between projects,
processes and
industries are allowed: Wastewaters from one site can be
used to produce water for reuse on other site
Permit requirements & conditions
Risk assessment (Public health & Environment)
Quality criteria
Management conditions, including
monitoringQualitativeQualitative
Semi-Quantitative
Semi-Quantitative
Risk assessment methodologies
Risk assessment
Risks
Who is
responsible
Permit
• Semi-quantitative approach based on importance scales
• Health and Environment• Needed for the permit application
• Microbiological content• Chemicals (assessed through the
use of the Combined Approach from WFD applicable to all WWTP)
• Reclaimed water producer (from production to the point of delivery)
• End user (from point of delivery to point of use)
• Validation of risk assessment and risk management
• Conditions: Definition of the measures for risk management
Risk assessment approach
Methodologies for risk assessment
Minimum Reasonable Risk Level
Tools to promote water reuse in PT
Law decree
• To establish the rules for the non potable uses of treated wastewaters
Guidelines
• How to develop a risk assessment for public health and environment
Case-Studies
• To understand the applicability of the law
• To find gaps and needs for improvement
• To be used as references for other similar projects
Awareness
Guidelines
Fly
ers
Available in www. apambiente.pt
Final remarks: New PT legislation
Flexible approach
Adequate to the complexity level of
projects
More complex or sensitive projects may require more stringent
management conditions and/or
quality requirements
Risk control
Quality criteria and multi barriers
Use of the equivalent barrier principle
Reclaimed water producers
& end-users
Good relations and information exchange
will allow a better development of risk
assessment procedures
Should be cost-effective
Must be feasible and reliable
Should be fit-for-purpose and
supported on risk assessment
Must ensure public health and
environment protection
Water Reuse
Final Remarks
PUBLIC ACCEPTANCE
They are the future!
Motivate the new generations for water reuse!
Project ISO TC 282 on water reuse:
They are the future
Art and Pictures provided by youth and chosen by youth!
https://committee.iso.org/home/tc282
