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

•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

•[email protected]

•+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


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•

•

• 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


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!


new decentralised sanitation - envaqua · •problems •resource scarcity-nutrients-fresh water...

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