New Decentralised Sanitation - ENVAQUA · •PROBLEMS •Resource scarcity-Nutrients-Fresh water...
Transcript of New Decentralised Sanitation - ENVAQUA · •PROBLEMS •Resource scarcity-Nutrients-Fresh water...
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New Decentralised Sanitation
ENVAQUA TKI TechTalk | 7 november 2019 13.00u | IUE-theater Amsterdam
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Introduction ENVAQUA
ENVAQUA is the association of Dutch water- and environmental technology
companies and represents over 100 members.
ENVAQUA organises
• TechTalks
• ExportEnablers
• Thematic Expert group meetings
• Network meetings
Expert groups: swimming pools, Legionella, water cycle, cooling water, waste
management, fluid sensing, bio-based technologies
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Format TechTalk
In a TechTalk, owners of societal challenges or ambitions align with technology companies how technologies can be applied to contribute
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Coert Petri, Waterschap Rijn en IJssel
ENVAQUA TechTalk | 7 november 2019 14.45u | D503
IBA’s in East Netherlands
Decentralised Sanitation
COERT PETRI
SETUP DUTCH WATERCHAIN:Drinking water companies: drinking water
Municipalities: sewer systems
Waterboards: waste water treatment
Waterboard Rijn en IJssel
Eastern part Gelderland
600.000 inhabitants
13 WWTP’s
900 IBA’s(decentralised)
Discharge to soil or ditch/brook
Regulations
Means oriented (not measuring concentrations)
Surface water BOD (mg/l) N-total
(mg N/l)
P-total
(mg P/l)
WWTP (central) 20 10 (15) 1 or 2
IBA I (SS)
Septic tank
Not vulnerable or
soil
250 - -
IBA II (BOD) Vulnerable 60 - -
IBA IIIa (N) Very vulnerable 40 60 -
IBA IIIa (P) Very vulnerable 40 60 3
Facts Achterhoek
Within 10-20 years new investments
Alternatives??
Pressure pipelines can/must be improved (energy consumption, comfort)
Maintenance IBA’s and pressure pipelines not well
Costs (IBA’s and pipelines) 10 municipalities Achterhoek € 3 million per year
Objective: public health
Contaminants of emerging concern (CeC’s)
40 m criterium
VERY NEW DECENTRAL SANITATION
WE CHALLENGE THE MARKET TO COME WITH:
New systems complying with:
High treatment efficiencies
Low energy consumption
Easy maintenance
Stable
Reuse water in house
Circular economy, etc. …..
Thank you for your attention
Questions now and/or at the end?
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Diederik van Duuren, WML
ENVAQUA TKI TechTalk | 7 november 2019 14.45u | D503
•AQUATECH
•SUPERLOCAL WATER CYCLE
•best practice water-wise neighbourhood
•in Kerkrade…
•location & philosophy
•collaboration & aims
•problems & solutions
•replication & upscaling
•Diederik van Duuren | [email protected]
•This project is co-funded by the European Union Life Programme, Urban Innovative Actions from the European Regional Development Fund and the
Province of Limburg
•AQUATECH
•SUPERLOCAL WATER CYCLE
•best practice water-wise neighbourhood
•in Kerkrade…
•location & philosophy
•collaboration & aims
•problems & solutions
•replication & upscaling
•Diederik van Duuren | [email protected]
•This project is co-funded by the European Union Life Programme, Urban Innovative Actions from the European Regional Development Fund and the
Province of Limburg
•LOCATION
•Bleijerheide in Kerkrade
•Former mining region
•Population decline
•Slow – Less – Local
•Indexation of values
•Circular economy
•PHILOSOPHY
•400 •130
•COLLABORATION
•Waste water utility (WBL)
•Drinking water utility (WML)
•Housing corporation (HEEMwonen)
•Municipality (Kerkrade)
•Multiple Value Creation
•Stakeholder dependent aims
•Learning
•Hybrid systems
•AIMS
•Old responsibilities
•Different cost-allocations needed
•System change needed (transition)
•PROBLEMS
•Resource scarcity
- Nutrients
- Fresh water availability
- Waste overshoot
•Climate change
- Extreme rain events
- Extreme droughts
•Individualization
- Increased loneliness
- Declining social control and interaction
•CENTRALISED SYSTEM
•Resource scarcity
- Loss of valuable substances (P, N. etc.)
- Pump and discharge to ocean system
- Circular economy = burning everything…
•Climate change
- Sewage system to small
- Drinking water peak demand
- Ageing infrastructure
•Individualization
- No face to face contact (unburden)
- Systems are out of sight and do not stimulate interaction and awareness
•BLACK WATER
•UASB-reactor
- Biogas to heat the reactor
- 2 m3/day
- Producing fertilizer
- Testing nearby
•GREY WATER
•Helophyte filter
- Biological purification
- 20 m3/day
- Research for reuse as (1) wash water, (2) drinking water and (3) infiltration.
•RESOURCE SCARCITY
•Source separation
- Dual pipe system
- Vacuum system
•In house
- Vacuum toilet
- Food grinder
•RAINWATER (HARVESTING)
•Buffers
- 250 m3
•Water Square
- Filled during extreme events
•Infiltration ponds
- No water leaves the area during a rain event
•DRINKING WATER
•Decentralised treatment plant
- Rainwater as main source
- Reducing drink water peak with smart buffering
- Water saving technologies
•CLIMATE ADAPTATION
•Rainwater harvesting
•Water demand reduction
•Peak reduction
•Being lonely effects the length of our life expectancy similar to smoking 15 cigarettes a day.
•A story about a village where all the women washed clothes together down by the river. When they all got washing machines, there was a sudden outbreak of depression and no one could figure out why. It wasn’t the washing machines or themselves. It was the absence of community. Friends, we’ve gotten so independent.
•We’re “fine” we tell ourselves even when in reality we’re depressed, we’re overwhelmed, we’re lonely, and we’re hurting. “We’re fine, we’re just too busy right now” we say when days, weeks, months, and years go by without connecting with friends. I’m fine, I’m fine, I’m fine. It’s so easy to say even when it’s not true.
•We’ve become so isolated and it’s hard to know how to get back. It’s so hard to know how to even begin to build the kind of relationships our hearts need. And I think in our current culture, it’s just not as organic as it once was. It’s more work now.
•Because you know, we have our own washing machines. We don’t depend on each other to do laundry, or cook dinner, or raise babies anymore. We don’t really depend on each other for much of anything if we’re being honest.
•Brene Brown
•Shared food grinders
•Shared Laundrette
•Water park
•SUPERLOCAL WATER
•Sustainable Urban Water Management (SUWM) System
•Not a Blue Print but a context specific configuration of local sustainable water measures with the aim of learning…
•DECISIONS AND PROCESS SUPPORT TOOLS
•UWOT modelling tool
•Serious Game
•Principles
•Knowledge sharing
•Do you want advise, calculations done or play the serious game at your (future) project? Let me know…
•Online beginning of 2020. Are you interested?
•WEBSITE COMMUNITY OF PRACTICE
•WWW.SUPERLOCALWATER.EU•Diederik van Duuren | [email protected]
•CONTACT
•SUPERLOCAL WATER CYCLE
•best practice water-wise neighbourhood
•in Kerkrade…
•Diederik van Duuren
•+31(0)615191070
•This project is co-funded by the European Union Life Programme, Urban Innovative Actions from the European Regional Development Fund and the
Province of Limburg
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Paraschos Chatzopoulos, Desah
ENVAQUA TKI TechTalk | 7 november 2019 14.45u | D503
Desah BV
Sustainable Source-Separated Sanitation
•Paraschos Chatzopoulos
•R&D Process Engineer
• Sustainable and innovative (C2C) Sanitation
• Track record with New Sanitation projects
• Close cooperation with knowledge institutes (Wetsus, WUR, UGENT)
• Partner in multiple innovation projects (national, EU)
• DeSaH B.V.
➢Closing loops
➢ Energy loop
➢Nutrient loop
➢Water loop•
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• Our approach
•Easier in a local (decentralised) level
•Black water
•Rain water
•Kitchen waste
•Grey water
Wastewater separation
Vacuum toilets flush with 1-1.5L of water and 100L of air (Conventional toilets -> 5-7 L).
•Water savings
0
20
40
60
80
100
120
140
Nederland(average)
Noorderhoek Lemmerweg-Oost
Wat
er
Co
nsu
mp
tio
n (
l/p
/d)
Total
Blackwater
Greywater
•30% reduction
•46% reduction
Black water (toilet water):High in organics -> enables digestionHigh in nutrients -> facilitates recoveryHormones and medicine traces
Grey waterLow pollutant concentrations -> less energyHigh temperature -> recover energy•Low heavy metal and salt concentration (good for irrigation)
Stream Characteristics
•Where?
• Buildings (e.g. hotels, resorts, offices andrecreational facilities) and housing estates
• Rural areas and remote locations (e.g. drillingsites, mining sites and army bases)
• Newly build districts and districts convertedfrom low to high rise buildings(sewage/WWTP can’t handle the hydraulicload)
Noorderhoek plant
•Greywater buffer
•Vacuum system
•200 Houses
Treatment scheme
•Calcium Phosphate Precipitation
•Calcium Phosphate
•Performance
• 78% conversion of COD to Biogas
• 72% removal of N by Anammox
• 76% recovery of P as Struvite
Parameter
Removal
efficiency
(%)
CODt 96
Nt 91
Pt 86
Decentralized vs Centralized
Compared with a centralized WWTP (100.000 p.e.) the DeSaH concept:
• Similar OPEX (incl. depreciation) at a scale of 3000 p.e.
• 2x higher energy production than an energy optimized plant, equal to 25% of total household heating demands
• Recovers 2.5x higher P than the current state of the art
• Produces 2x times less surplus sludge
• Footprint is ~0.2% of the total footprint of the connected houses
0
500
1000
1500
2000
2500
3000
2004 2006 2008 2010 2012 2014 2016 2018
Pe
rso
ne
n
•References of DeSaH B.V.
•NIOO, Wageningen
•Villa Flora, Venlo
•Noorderhoek, Sneek
•Rijnstraat 8, Den Haag
•Process Development
• Adaptive quaternary treatment
• Removal micropollutants (direct NF + AO inconcentrate stream)
• Alternatives for nutrient recovery (CaP,K-Struvite, NH4 stripping)
• Removal of pathogens (incl. ARB) with high
T
Water Reuse (Sweden)
•Advantages DeSaH
Energy production
Water savings of at least 25%
Treatment of WW and organic solid waste
Closing energy, nutrient and water loop
No harmful by-products
Very high removal efficiencies
Thank you for your attention!
Questions?
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Peter Scheer, SEMiLLA Sanitation
ENVAQUA TKI TechTalk | 7 november 2019 14.45u | D503
DECENTRAL,
based on space
SEMiLLA Sanitation
30 m3
per
hour
GREY WATER TREATMENT
Water saving @ Zwarte Cross
100 m3
100 m3
Potential
470 m3
100 m3
100 m3
The Loo(p)
Drinking water
Surface water
Transporting
clean water Sanitation UnitsTransporting
waste water Waste water treatment
Fresh vegetables
Irrigation water
Compost
Too de loo
Shower
Urinoir
Toilet
H2O Neutral? Sewage less?
100% water reuse and recovery, the ultimate goal!
Ready In progress
Drinking
waterGrey Water
TreatmentVacuum
systems
Urine
collectionUrine
treatmentBlack Water
Treatment
BWTU (VE+)
2,75 m3 per dag
Hydraloop
(systeem met pomp)
Regenwater tank
(7 m3) per huis
Infiltratiekoffer
3 m3 (centraal in straat)
Pomp:
irrigatie - autowas
(14 liter per huis)
Composting
(0,03 m3)
WADI
WADI
(18,6 m2 , 30 cm diep)
H20-neutral + sewageless
3. WATERBALANS
Infiltratiekoffer
IEX
VE+
NDFHydraloop ECO creationWC
Douche/Bad
Wasmachine
Regen
WADI
Afwasmachine
Keuken
Wastafel
(0,38 liter
(2,0 drinken,
0,38 via
wasbak)
(11,9
liter)
(114,24
liter)
(28,
56
liter
)
(66,
64
liter
)
Huisnive
au
Straatnive
auTuin
Auto
(14,28
liter)
(67,
70
liter
)
(0,08
m3)(0,03
m3)
(2,67
m3)
(2,69
m3)
(2,65
m3)
THANKS!
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Thank you for your attention!
ENVAQUA TKI TechTalk | 7 november 2019 14.45u | D503