Industry perspective on water for bioenergy production

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9 Νοε 2013 (πριν από 4 χρόνια και 3 μέρες)

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1

Water in Bioenergy
Agroecosystems

Workshop


Industry perspective on water for bioenergy production

Alistair Wyness, BP International Group Water Expert

13 June 2012

2

Water in Bioenergy


The importance of “water management” in
industry


External expectations


Managing water within biofuels operations


Reporting water withdrawals and consumption


Conclusions

3

Water & Industry


Fresh water
is
a scarce
resource
in many locations


Competition increasing


Population (Water, Energy & Food Demands)


Economic Growth


Pollution Increasing


Climate
Change



Regulations
tightening


Increasing external
focus on industrial use



4

Water & Industry

Source: Water Resources Group 2030, Charting our Water Future



5

Expectations of Industry


Water management in industry now essential with many drivers


Access and availability


Challenge of scarcity and water quality


Human right to water for drinking and sanitation



Regulation



Competition for resources and increasingly stringent regulations.


Operations



Risk management


water conservation


Cost


decisions on cost or decisions on value?


Stakeholder


Significant NGO, pressure group and investor focus. Growing pressure by civil society,
consumers and
media.


Reputation



Licence to operate


6

Emerging Themes in Industrial Water Management


Direct Operations

-

Water efficiency & targets, technology investment, account for water availability in
facility
-
siting


Supply Chain Management
p

encourage supply chain to do the same


Watershed Management
p

understand the watershed risks, share the risk and solutions with the
stakeholders


Collective Action



closer ties with civil society organisations, local and national regulators, collective
investments


Public Policy



Contribute to regulations that drive water sustainability, partnering with global initiatives


Community Engagement



understand water/sanitation challenges, encourage/provide support to local
government


Transparency



publish and share water strategies, withdrawal, impacts, mitigation measures and action on
all of above



7

How do we apply these principles to biofuels?


Direct operations



siting of operations, minimise consumption at refinery, maximise irrigation
efficiencies, practice
fertigation


Watershed Management


understand constraints within watershed, operational impacts, how biofuels
can be managed to minimise impacts/maximise opportunities


Collective Action/Community
E
ngagement



work with local civil organisations and communities to
develop shared solutions in water competitive environments


Public Policy



work with trades bodies and regulators to develop water management practices


Transparency



Report water consumption at the different levels: plant, farm, watershed



A need to fully understand potential and perceived impacts prior to full scale development






8

Water Withdrawals & Consumption


Agricultural water use far surpasses that of industrial.


~20:1 ratio for a
lignocellulosic

operation


Need to consider the different components of water use: green. blue and grey

Green
water


Does
bio
-
energy crop change
(positive
or negative
) the runoff
characteristics downstream of the
crops as a result of changes in ET
demand?





Blue water

How
does irrigation (if adopted) change the
watershed consumptive use of water?


Seasonal differences?


Use
of
fertigation

as a blue
water/fertiliser?


Refinery
use and use of water within the crops
as a source

Grey water

Impacts
of fertiliser and pesticide
applications
downstream of the
cropped lands

-

potential future
liability






9

Water Withdrawals & Consumption

Bioenergy needs a common framework that captures the
NET

water use related to crop growth and refinery
processes

REFINERY:


Water withdrawn from rivers, lakes and aquifers


Water released from crops in processes


Treated water


to disposal


to
fertigation


Aim to define consumed water


Measurements relatively straightforward

CROPS


Do we include net green water use?


Irrigation use


How to define efficiency


Measures to improve e
fficiency (e.g.
tailwater

recapture in for
re
-
use)


Cost of measurement very high


Measurement v modelling







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Conclusions


Understanding the
watershed

in which both refinery and bio
-
energy crops are located is key to understanding and reporting
impacts


Needs assessment of economic, environmental and social
challenges within the watershed


Essential at pre
-
feasibility stage to fully understand the
constraints and develop the baseline


Models will play an important part of understanding impact
and reporting water use


The industry needs a common, transparent framework to
demonstrate
net
water use in bio
-
energy production



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