From Waste to Resource:
Opportunities for your Trade Waste
James Gourley| Environmental Consultant / Engineer
Presentation title
At a glance
Presentation title
“We are dedicated to our clients and their
stakeholders, to being a responsible
corporate citizen and t...
Presentation title
Small to Medium Businesses - drivers
Typically SMEs have much less capacity than bigger organisations t...
Presentation title
Bu$iwise Audits
Water and wastewater audits for small to medium businesses.
Business receive a report o...
Presentation title
Waste Hierarchy
Avoidance
Reuse
Recycling
Recovery of Energy
Treatment
Containment
Disposal
Most Prefer...
Presentation title
Yarra Valley Water – Tradewaste Standards
Temperature
Solids
Oils, Fats and Grease
Organic liquids
Late...
Presentation title
Yarra Valley Water – Tradewaste Charges
• Annual Contract Fee
• And the following fees depending on vol...
Presentation title
Case Study – Smallgoods manufacturer
Install efficient, high pressure spray nozzles
and hose locks and ...
Presentation title
Case Study – Clean In Place
CIP systems essentially clean a production line
without the need to removin...
Presentation title
Case Study – Food Processor, rainwater use in
cooling towers
Cooling towers used extensively to run air...
Presentation title
Case Study – Swimming Pool Operator
Replace pool make up water with rainwater from roof
Optimise filter...
Presentation title
Case Study – Automotive parts manufacturer –
onsite treatment
Processes included electroplating and met...
Presentation title
Case Study – Botanical Gardens
Substitution of irrigation water with treated wastewater from nearby pla...
Presentation title
Design Efficiency
Engineers typically design to a budget and time
schedule using proven low risk design...
GHD offers the following services
relevant to SMEs
• Experienced Manufacturing and Process
Engineers
• Plant design and co...
Presentation title
www.ghd.com
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From Waste to Resource: Opportunities for your Trade Waste

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From Waste to Resource: Opportunities for your Trade Waste

  1. 1. From Waste to Resource: Opportunities for your Trade Waste James Gourley| Environmental Consultant / Engineer
  2. 2. Presentation title At a glance
  3. 3. Presentation title “We are dedicated to our clients and their stakeholders, to being a responsible corporate citizen and to improving the quality of life around the world.” Sustainable development
  4. 4. Presentation title Small to Medium Businesses - drivers Typically SMEs have much less capacity than bigger organisations to deal with issues such as the environment unless there is a strong business case. Economics first, environment second. However an audit can improve competitiveness and productivity whilst also improving environmental performance.
  5. 5. Presentation title Bu$iwise Audits Water and wastewater audits for small to medium businesses. Business receive a report outlining audit results and solutions tailored to their operations. • Reduce water, wastewater and associated energy costs • Improve operational processes • Solutions with realistic payback periods Save time: New product advice, Training advice for staff, Industry benchmarks
  6. 6. Presentation title Waste Hierarchy Avoidance Reuse Recycling Recovery of Energy Treatment Containment Disposal Most Preferable Least Preferable Source EPA Victoria Tradewaste There are typically opportunities before discharge to sewer!
  7. 7. Presentation title Yarra Valley Water – Tradewaste Standards Temperature Solids Oils, Fats and Grease Organic liquids Latex emulsions Radioactivity Colour pH Nitrogen and Phosphorus Sulfur Metals Halogens Cyanide Organic Acids Phenolics, aldehydes, ketones Aromatic Hydrocarbons Esters and Ethers …there are many more – you cant just discharge to sewer with any waste and forget about it.
  8. 8. Presentation title Yarra Valley Water – Tradewaste Charges • Annual Contract Fee • And the following fees depending on volume and ‘strength’ of tradewaste (2012/13 figures): There is financial incentive to reduce tradewaste Trade waste discharge fees Unit Charge ($) Volume ($/kilolitre) 0.9768 Biochemical Oxygen Demand ($/kg) 0.7631 Suspended Solids ($/kg) 0.4442 Total Kjeldahl Nitrogen ($/kg) 2.0628 Total Dissolved Solids ($/kg) 0.0318
  9. 9. Presentation title Case Study – Smallgoods manufacturer Install efficient, high pressure spray nozzles and hose locks and hose guns to be installed to all wash water hoses (Payback 3 months) Warm air defrosting of freezer coils (Payback 2.5 years)
  10. 10. Presentation title Case Study – Clean In Place CIP systems essentially clean a production line without the need to removing process components. This is achieved by flushing the system with cleaning agents. Four aspects are important: Time, Temperature, Concentration and Velocity. Regular review and optimising of CIP is essential • Check for opportunities to recover rinse water • Review cleaning cycle length. • Training of operators for improved efficiency CIP Case study in meat manufacturing – second rinse step eliminated by optimising the first flush, final rinse step collected and reused (saving 1.7 ML/year, 3 year payback)
  11. 11. Presentation title Case Study – Food Processor, rainwater use in cooling towers Cooling towers used extensively to run air conditioning and chilled water line to processing floor. Cooling tower main issue: water lost to the atmosphere by evaporation and drift. Substitution of potable water with rainwater from the roof, being careful to pretreat rainwater (filter and UV disinfection). Improvements: less salts in rainwater compared to mains water, less chemicals used in cooling tower, and less blowdown to tradewaste.
  12. 12. Presentation title Case Study – Swimming Pool Operator Replace pool make up water with rainwater from roof Optimise filter backflush process Use high efficient, high pressure nozzles to clean deck surfaces Change mens flushing urinal to waterless urinal Reduce pool water temperature to 23 degrees to reduce evaporation (Paybacks 2.5 – 10 years)
  13. 13. Presentation title Case Study – Automotive parts manufacturer – onsite treatment Processes included electroplating and metal treatment for preparation of painting parts. Wastewater treated on site instead of discharge to sewer. Treated water reused back into process. A reduced sludge waste was then able to be taken to landfill. Water consumption and tradewaste volume reduced by 35% Payback 3 years
  14. 14. Presentation title Case Study – Botanical Gardens Substitution of irrigation water with treated wastewater from nearby plant. Piping, pumps, minor treatment cost $100,000 Payback 4 years Increased risk to public however so no access during irrigation as per EPA guidelines.
  15. 15. Presentation title Design Efficiency Engineers typically design to a budget and time schedule using proven low risk designs. • Reward energy efficiency in design • Define end use and start downstream • Use measured data, not assumptions and rules • When costing a design look at optimising all elements including large capital items (eg pumps) as well as pipelines (often costed separately) • Shorter, wider pipes • Eliminate right angle bends and valves • Preference for VSD pumps not valve control of flow A 50% increase in pipe diameter leads to an 85% decrease in friction loss!
  16. 16. GHD offers the following services relevant to SMEs • Experienced Manufacturing and Process Engineers • Plant design and construction management • Food Processing Service Line • Sustainability Experts • HSE, hygiene, energy and water auditors Solutions for industry including baking, dairy, beverage, confectionary & snack foods, seafood, fruit & vegetable, meat, cold chain, FMCG, pharmaceutical, biotechnical markets and beyond
  17. 17. Presentation title www.ghd.com

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