WATER FOOTPRINT AND NEUTRALITY€¦ · General Mills • 5-year goal to reduce water use by 5% ......

WATER FOOTPRINT AND NEUTRALITY:

CHALLENGES & OPPORTUNITIES

April 13, 2012

Presented at WaterTech, Banff, AB

Francisco A. Perello, PhD, P.Eng.

Table of Content

• Introduction

• Definitions

• Market Trends

• From Concept to Implementation

• Project Review

Global water use increasing at 2.4x population growth rate.

Over 1 B people w/o clean drinking water.

Over 2 B people w/o adequate sanitation.

Over 5 M deaths annually from preventable waterborne diseases.

97.5% salt water; 1.5% frozen fresh water

Fresh water use: 70% irrigation; 22% industry; 8% domestic use.

THINKING GLOBALLY

How much water

is consumed in a country?

Benchmark of

National Water Footprints

Country m3 / yr / capita Comments

Global 1,385 = 380 L/d/cap

China 700 7% external

Water-rich South vs

Food-rich North

India 980 2% external

Indonesia 1,317 ~10% external

Water-rich South vs

Food-rich North

UK 1,750 97% external

Germany 1,940 Mainly a water importer

Spain 2,000 Water importer for agricultural

products

Water exporter for livestock

Netherlands 2,300 89% external

Water-rich South vs

Food-rich North

UK 1,750 97% external

Germany 1,940 Mainly a water importer

Spain 2,000 Water importer for agricultural

products

Water exporter for livestock

Netherlands 2,300 89% external

Canada 2,333 21% external

How much water is needed to

make a commercial product?

18,000x its weight

*30L for one cup of tea

Definitions

Water Footprint of a Business (Product) • Total volume of fresh water used directly or

indirectly to run and support a business (or to produce a product)

• Includes blue, green and grey water

Water Neutrality of a Business (Product) • Reducing water footprint as much as reasonably

possible and offsetting remaining negative externalities

• It doesn’t mean water use is zero

Market Trends

1 in 5 consumers is sustainability-driven

in brand and store choice.

Water efficiency is a sustainability component.

What are the trends?

Market Trends

General Mills

• 5-year goal to reduce water use by 5%

Coca-Cola

• Began reporting water issues as a material risk to

investors

• System-wide goal of returning all water used back

to nature

Market Trends

Anheuser-Busch

• Currently 5.5 L of water per L of beer packaged.

• Goal is 4 to 1.

• Decreased water usage by 37% since 2000.

• One plant reduced its water ratio to 4.3

Cadbury (now Kraft Foods)

• Goal to reduce water usage by 20% by 2020

Market Trends

Colgate - Palmolive:

• Their 2002 to 2010 target was to reduce water use

by 25% and attain a 40% reduction of water use per

unit of production worldwide.

ConAgra Foods:

• In April 2010 announced a goal to reduce water use

by 15 percent per pound of product produced by

Market Trends

Who’s the leader?

Project Summary

Client is a Food Processor located in the Lower Mainland

Engaged us during $8 million plant expansion

Plant has dedicated flow meters

Flow readings every 15 minutes

287 flow data points per day

105,000 data points per year

12:00:00 AM 12:00:00 AM 12:00:00 AM 12:00:00 AM 12:00:00 AM 12:00:00 AM 12:00:00 AM 12:00:00 AM 12:00:00 AM 12:00:00 AM

What does it mean?

How can it be used for projecting

water use after plant expansion?

Permit Max Instantaneous Flow

Cleaning Hours Production Hours

Typical Daily Effluent Flow with Original Permit Levels

25 m3/d

Sanitation

64 m3/d

4.5 lps (Max)

Pre-expansion flow

128 m3/d 96 m3/d

8.9 lps (Max)

Post-expansion

Estimates

Line 1

Line 2

• A water balance was completed for the plant.

• Flow spikes during sanitation attributed to

– Draining of multiple kettles

– Draining of CIP tanks during short period of time

89 m3/d

4.5 lps

136 m3/d

12.1 lps

Production

Identified Opportunities

Best practices implemented

Operator’s education/awareness

Lower volume nozzles for the CIP system

Ingredients in bags rather than pails

=> reducing water for cleaning

Holding tank for kettle discharge

=> slow bleed back into system

High pressure hoses

RESULTS

reduced peak flows & total water consumption

Line 1

Line 2

40 m3/d

69 m3/d

4.5 lps (Max)

Post-expansion

Estimates w/ Water

Saving Measures and

Water Management

Practices

25 m3/d

Total Sanitation

64 m3/d

4.5 lps

128 m3/d

96 m3/d

8.9 lps (Max)

Pre-expansion flow

Post-expansion

Estimates

89 m3/d

4.5 lps

224 m3/d

12 lps

109 m3/d

4.5 lps

Production

ACTING LOCALLY

• Determine Water Footprint

– own operation and supply-chain

– batch, continuous, seasonal

– water balance for all unit processes

• Reduce Water Footprint

– identify opportunities

– to reduce consumption and generation

• Plan Water Neutrality

– Reduce as much as possible internally and externally

– Offset at local watershed level

• Operate Water Neutral

THANK YOU !!

www.KeystoneEnvironmental.ca

Francisco A. Perello

fperello@keystoneenvironmental.ca

604-430-0671

WATER FOOTPRINT AND NEUTRALITY€¦ · General Mills • 5-year goal to reduce water use by 5% ......

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