Waste Water Reuse Technologiesfor HVAC&R Systems

Vibe Hotel, Milsons Point

17th February, 2009

By Michael O’Neill / Veolia Water

Wastewater Reuse Presentation

� Topics for Discussion:

� Presenter’s Company Background

� Re-use Options

� Case Studies

� Conclusion

Water

Veolia Environnement

• No 1 worldwide in water services for local authorities and industries

• WW revenue: A$ 16.2 billion

• No.2 worldwide in waste management

• WW revenue: A$12 billion

• Leading private operator of transport services

• WW revenue: A$7.9 billion

• Leading provider of energy services

• WW revenue: A$9.8 billion

• 298,000 staff in 67 countries

• WW revenue: A$48 billion

Waste

TransportEnergy

Veolia Water: World Leader in Water Services

� 78,000 employees in 59 countries (1000 employees in Aus and NZ)

� 153 years of experience in the water industry

� Worldwide revenue: A$ 16.2 billion (2006)

• Design, Build & Maintain water & wastewater networks and related facilities

• Design & Build of water and wastewater treatment plants, Equipment Supply, Specialty Water Treatment Services

• Operations & Maintenance of water and wastewater plants

> Creating Water Solutions, using innovative techno logies

� Design & Build

� Design, engineering, construction and commissioning of water and wastewater treatment plants of any scale for drinking, process water or wastewater

� Engineered Systems and Standard Products

� Range of modular and customised integrated systems

� Operational Support & Service

� Maintenance & Service Agreements, Hydrex Chemicals & Chemical Service Agreements, mobile units and pilot plants & after sales

Veolia Water Solutions and Technologies

Illawarra & BayswaterSite offices: 2

NEW ZEALAND

Western Australia

NorthernTerritory

South Australia

Queensland

New South Wales

Victoria

WA, SA, VIC, TAS, NTManager: Rod Smith

Activity: Solutions

QLD, NSW, NZManager: Peter Gendle

Activity: Solutions

Perth: 8

Adelaide: 8

Melbourne: 24

Auckland, NZ: 1

Brisbane: 6

Seven Hills: 30

Sydney (Head Office): 56MD: Laurent Gaborit

GM D&B: Michelle MoroneyGM Solutions: Matthew Lee

Activities: D&B and ES

Tasmania

Total: 139 staff Design & Build: 38Solutions: 83Support: 18

VWS&T: A Nationwide Coverage

VWS&T - World Leader in Water Reuse

� We are the world leader in water reuse

� Over 35 water reuse projects in Australia recycling 550 Megalitres a day;

� From:

� Raw & treated sewage, ground water, industrial effluent, cooling tower bleed……

� Using:

� Biological treatment, Microfiltration / Ultrafiltration, Reverse Osmosis, Ozonation…..

� For:

� Irrigation (agriculture, gardens, golf courses), toilet flushing, Industrial reuse…

Wastewater Reuse Presentation

� Topics for Discussion:

� Presenter’s Company Background

� Re-use Options

� Case Studies

� Conclusion

What Water Do We want to Reuse?

� We start with waste water

� We want to collect it…..

� make sure its clean enough,

� so we can re-use it.

What Waste Water?

� Water can come from;

� Ground water, raw sewage, treated sewage, rain water, grey water, equipment drains…….

� Depending on where it comes from, water normally has;

� Undissolved solids (Total Suspended Solids: TSS)

• Causing dirty surfaces, blockages, erosion, corrosion.

• Can be removed by filtering.

� Dissolved salts; (Total Dissolved Solids: TDS)

• Causing hard mineral deposits, corrosion.

• Can be managed using Reverse Osmosis, pH, dilution

� Other:

• Solvents, oil and grease and other organics & nutrients

• Can be removed by microbiological treatment

• Bacteria, and other microbes

• Can be removed by UV, chlorine etc.

What Clean Water?

� Irrigation Reuse

� Needs saltiness and health aspects managed

� Equipment Reuse (Boilers, cooling towers, etc)

� Needs saltiness and organics managed: corrosion & scale, Legionaires disease, etc.

� Non-Potable Water: (Toilet flushing, equipment washing)

� Aim for drinking water chemistry, but not guaranteed.

� Potable Water:

� Needs to meet stringent requirements for drinking

� High Purity Water: for pharmaceuticals, labs, manufacturing, HP boilers.

� Needs minimal dissolved salts and gases.

� Mains water needs further treatment too.

Solids Removal: Filtration & Clarification

Cartridge FiltersSand, Carbon

Disk Filters

Microfiltration

Actiflo (High rate clarifier)

Organics Removal: Microbial Treatment

Ecodisk®

NEOSEP®

Moving Bed TM

Biofilm Reactor

(MBBR)

Salt Removal: Reverse Osmosis

Ion Exchange – High Purity

Deionisation (resins)

Continuous Electro Deionisation (CEDI)

Microbe Removal: Sterilisation

Chlorine

UV

Ozone

Multi Technology & Service

Orion:

Softener + Carbon + MF + RO + CEDI + UV

Service and Support

Re-use Options

� Waste Water Sources:

� Not easy to re-use:

• Cooling tower drains water is salty.

• Black water and grey water are salty, microbe laden, need filtering etc.

• Ground water is typically salty

• Sea water is salty.

� Easier to re-use:

• Rainwater, stormwater or lake water; needs filtering

• Grey water (if controlled at source and disinfected)

� Easy to use (but not readily accessible):

• Condensate from de-humidifiers, heat exchangers etc,

• Aquifer water (southern highlands, central coast, etc)

Re-use Options

� Re-use Water Applications:

� Non-stringent requirements:

• Toilet flushing: Can be salty.

• Filter backwashing: can be salty.

• Irrigation: can have nutrients (organics), and some salt.

� More Stringent:

• Cooling towers: Needs moderately low salt content, organics, solids.

• Equipment washing/rinsing: health aspects and residue need care

� Quite stringent:

• Drinking water,

• Boilers, specialist processes.

Wastewater Reuse Presentation

� Topics for Discussion:

� Presenter’s Company Background

� Re-use Options

� Case Studies

� Conclusion

Case Studies – Reuse

� Australia

� Eraring PS: Treated sewage to non-potable boiler feedwater

� Bayswater PS: Cooling tower bleed to cooling tower feed

� Various Golf Clubs: Treated sewage to irrigation

� Arnotts: Industrial Effluent to potable water

� Orica / Botany: Ground Water to cooling towers and boilers

� Brampton Island Raw Sewage to irrigation

� Many others in Australia and overseas.

Case Studies

Conclusion

� Anything is possible.

� Large projects are economical and tried and tested.

� Small projects need to be done with elegance and ingenuity.

� Our challenge is to pick the right technology from the myriad available,

� and provide rapid, practical advice.

� With Veolia, you get sensible solutions, and a plant that will work…forever.

Thank youMichael O’Neill

Veolia Water Solutions & Technologies

Unit 2, 5 Stanton Road

Seven Hills NSW 2147 – Australia

Tel. + 61 2 8824 0200

michael.oneill@veoliawater.com