hans huber ag - ewa · 16th international ewa symposium “sustainable wastewater management –...

16th International EWA Symposium “Sustainable Wastewater Management – New solutions for new problems”

Munich, Germany, 8-9 May 2012

Nick Meeten

Team Leader -

Green Buildings

HUBER



Presentation Overview

• A brief history of time (for cities).

• Why do we need to change from ‘Business

As Usual’ for our cities of the future?

• What are some alternative concepts?

• How do we implement it?



A Brief History Of Time – Mid 1800’s

1850’s & 1860’s:

Widespread construction of city

sewers starts around the world.

Common Forms of Transportation

Barcelona

Urban Form

World Population source: world bank



A Brief History Of Time – Early 1900’s

Common Forms of Transportation

Barcelona

Urban Form




Urbanisation

1950

50%

A Brief History Of Time – Mid 1900’s

Urban Form


Source:

UN-ESA

Barcelona



A Brief History Of Time – Early 2000’s

Urbanisation

1950

2005

50%

Source:

UN-ESA

Barcelona

Urban Form




A look into the future - 2050

Urbanisation Urbanisation

1950

2005

2050

50%

Urban Forms???


Source:

UN-ESA



Pressure Building for Infrastructure Investment

Source: GWI Global Water Market 2011

Global AWWA Study

Source: http://www.win-water.org/reports/infrastructure.pdf



The Issues

http://maps.grida.no/go/graphic/increased-global-water-stress

1. Running Out Of Water

2. Infrastructure Resilience

3. Adaptability & Flexibility



Running Out Of Water

Natural

Supplies

Houston Singapore

Orlando

No Need

To Change

Need to

Change Population Growth

+ Urbanisation +

Competiton (e.g.

Agriculture & Industry)



Infrastructure Resilience

Source: http://www.scientificamerican.com



Infrastructure Resilience



The Typical City Of Today

Potable water brought in Waste water removed

$$$$$$

The limits of natural ecosystems

is being reached

Extensive Pipes in the

Ground Infrastructure.

Expensive, Inflexible & Aging.

$$$$$$ $$$$$$ $$$$$$



Non-Potable Reuse Possibilities

Landscaping

Irrigation Industrial

Groundwater Recharge

Amenity

Fire/Washdown

Internal



$$$$$$

The Cities of the Future

LESS Water brought in LESS Wastewater removed

Advanced wastewater

treatment with water

recycling

Better use of water

More resilient network

Adaptable to change

Decentralised or Semi-Centralised

Infrastructure

Savings? Redirected capital investment

$$$$$$ $$$$$$ $$$$$$

$ $ $ $ $



Decentralised Infrastructure Example – Venice Italy

>4700 Septic Tanks

>2000 Grease Traps



120 larger plants remotely

controlled by Venice

Water Authority

Decentralised Infrastructure Example – Venice Italy



Semi-centralised Treatment & Reuse - Chile



Sewer Mining For Water Reuse

The treated water is then recycled

for irrigation of parks, golf courses,

sports fields etc.

1. Sewer

2. Manhole with screen & pump

Wastewater is extracted from a

street main sewer and treated with

MBR to make it clean and safe.



Sewer Mining in Sydney



Enabling Technology - Membranes

Before After

Before After



Innovative Technology - Mobile Sludge Dewatering



Typical packaged water treatment systems

I don’t want a shipping container parked outside my

hotel!!



New generation MBR systems



How Can It Be Implemented?

Industrial water

demand

Irrigation water

demand

Catchment area

for wastewater



The Tipping Point for Action

Technology Advances

Affordability Need to invest Demand

Resistance to

Change

Experience &

Confidence

Regulatory

Hurdles



Today




Thank you for your Attention !

[email protected]

hans huber ag - ewa · 16th international ewa symposium “sustainable wastewater management –...

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