waste water management in the netherlands
TRANSCRIPT
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Waste Water Management in the Netherlands
New York, August 10
Henry van Veldhuizen,
Strategic Advisor Waste Water Treatment
Waterschap Vallei en Veluwe
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• Waterschap Vallei en Veluwe (“Water Board”)
• Waste Water Management in the Netherlands
• Innovations in Waste Water Treatment
• Conclusions
Content
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22 Dutch Water Authorities
Waterschap Vallei en Veluwe
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Waterschap Vallei en Veluwe
2nd International Resource
Recovery Conference 4
244. 833 ha
1.082.000 inhabitants
16 wwtp’s
1.471.00 p.e.
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Waterschap is the regional Water Authority
Daily boarddijkgraaf and 3 heemraden
Organisation
General Board30 members
• Daily Board: Dijkgraaf, heemraden
• General Board
• Elections
• Taxes
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Core Business Waterschap Vallei en Veluwe
• Water Safety
• Sufficient and Clean water
• Wastewater Treatment
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Challenges 2017-2021
• Climate change: adaptation and mitigation
• Circular Economy
• Water quality and quantity
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Waste Water Treatment in the Netherlands
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History of Waste Water Treatment
• 1900-1970 start of urban waste water treatment
2017: >99% treated
• 1970 Surface water pollution act
reduction of industrial discharges
• 1970 -1985: removal of organics (COD)
• 1985 – 2005: removal of Nutrients
2017: > 80% N/P removal
• 2005 – 2027: EU Water Frame Directive: ecology
• 2016 - ...: Micropollutants: Delta Approach
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Organisation of the water cycle
• Communal and industrial waste water as main sources
• First combined sewers, later separated for Wastewater
and Storm water
• Discharges regulated through permits
• 2 governments – one task
• Municipalities -> collection systems (sewers)
• Waste water treatment -> regional organizations
for scale purposes (Water Boards)
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WWTP’s
• About 340 activated sludge plants
• 3.000 – 1,300.000 p.e.
• About 25 with sand filtration
• Innovations:
• Sharon, Annamox
• Nereda
• Energy and Resource Factory
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The Nereda Reactor
Wastewater
Effluent
Sludge flocs
Granular sludge
aeration
•Energy saving:
30%
•Cost saving: 30%
•Space saving:
>50%
•Alginate as a
surprise product
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• From a linear to a circular approach
• Waste water as a resource of raw materials, energy and clean water
• Cooperation of 22 Dutch water authorities
• Shared vision and ambition: route map 2030
Energy and Resource Factory
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Energy
• 9 Energy neutral plants
• Green gas for transport
• CO2 for industry
• Heat for households
wwtp Den Bosch: green gas for transport
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Phosphorus
• 8 production locations of
fertilizer struvite
• 2018: P from ashes at
Ecophos (Belgium)
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Cellulose
• 4 production locations for
cellulose
• Application in asphalt, isolation
material, bioplastics
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Removal of emerging substances
• Delta Approach Water Quality and
Fresh Water
• Chain approach Pharmaceuticals
• Joined efforts of Water Boards: Water
Factory
• 4 pilots:
• Powder Activated Carbon (PAC)
• Granular Activated Carbon (GAC)
• Ozonation with GAC
• Pharmafilter for Hospitals
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Conclusions
The Dutch Water Authorities
together with partners in the golden triangle
are working on an integrated approach
for a sustainable waste water treatment:
future-proof,
innovative
and circular
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Everything clear…
Questions?