Dairy by-product Water by Projectify Ltd

Dairy Effluent By-productRecycled Water

NCDEA PresentationMatthew Percival

5th May 2011

Objectives

• Understand industry knowledge specific to management

roles in the food industry

• Ability to identify & analyse industry trends

• Ability to interpret codes & standards & their requirements

• Knowledge of sustainability issues

• Product knowledge – Recycled water

Cow water ex milk not urine (India)

1. Fonterra (NZ) recycle 7% of factory water (Fonterra 2009)

2. Coca Cola Moorabbin, 25% water saving (AIGroup 2008)

3. Murray Darling Basin irrigation decline of 42% (2006-2008)

Industry Trends

Water saving up Water availability down

1. Oil in US peaked in 1970 (USEIA 2007)

2. Concept of Peak water useful to promote debate (Postel 1996)

Peak oil / water

1996

Murray Goulburn - the water company

Cow water 87% of milk

2.6 billion litres of water2.6 billion litres of water

1. Australian Drinking Water Guidelines 2004 (Federal)

2. Australian Guidelines for Water Recycling 2008 (Environment

Protection and Heritage Council AUS & NZ)

3. Murray Goulburn Standards (Leongatha)

• Require higher quality than town water

• Purchased town water - high in solids

Codes & Standards

6-7 cycles typical – Leongatha 1 cycle

Energy in Water

How much Energy is embedded in water?

Energy Intensity

Energy embedded in: (kWh/kL)

Fresh Water 0.0 to 0.3 distribution

Recycled Water 3 to 6 using RO

At $0.10 per kWh, electricity cost per kWh = $0.60 elec opex only

Cost of WaterCost of water components:

1.Capture2.Chemical3.Electricity4.Storage5.Reticulation6.Effluent7.Management

$/kLTown Water Leongatha 1.76Town Water Mildura 0.83Town Water Moorabbin 4.05Recycled Water(various) 0.80-$4

Leongatha purchased 888ML Cost of $1.562 millionCost to dispose $1.6 m (SGWater)

Using recycled water Potential saving of $$

Objectives

our generation

How many litres of water are required to produce 1 litre milk?

1,020 litres (Hoekstra 2010)

Hamburgers need 16,000 L water per kg

Coffee needs 21,000 L water per kg

How many litres of water to produce 1 kg cheese?

5,169 litres (Hoekstra 2010)Milk Powder is similar

PerspectiveMG sites use 6 billion litres water –Recycle/reuse 6.75 billion (MG Environ report 2008)

Water to produce 2.8 b L milk = 2800b LOr 466 times more water required on the farm

Desalination plant Wonthaggi150b litres/year

Conclusion

Water availability reducing

Milks water footprint – mainly on farm

Energy embedded in Water

MG performing well, could always improve

Improve Quality – require less

Reduce water, increase quality, save energy, save carbon, save money, increase security

Thank you

Murray Goulburn water use

Fonterra recycling 7%

Cow water 87% of milkRaw milk intake 2,800 ML

Murray Goulburn 2009-2010 Season units in MegaLitres Resource efficiency indicators

MG sites Water

importedSurface Water

Water recycled

Total Water

% recycled

Waste Water

Water kL/T product

Solid waste kg/T product

Liquid Waste kL/T product

Leongatha 888 371 1,259 29% 1,126 4.91 3.37 4.39Cobram 1,634 131 325 2,090 16% 3,124 19.8 14.8 29.66Koroit 57 1,004 1,061 95% 600 6.2 2 3.5other sites 539 1,684 TOTAL 2,239 6,094 37% 2,259 est. of water evaporated (G Elphistone)

MG EREP reports 09/10