• Save
Water and Agriculture
Upcoming SlideShare
Loading in...5
×
 

Water and Agriculture

on

  • 1,163 views

Presentation given to the Institution of Agricultural Engineers on the activities in the Centre for Water Science

Presentation given to the Institution of Agricultural Engineers on the activities in the Centre for Water Science

Statistics

Views

Total Views
1,163
Slideshare-icon Views on SlideShare
1,141
Embed Views
22

Actions

Likes
0
Downloads
0
Comments
0

2 Embeds 22

http://www.linkedin.com 16
https://www.linkedin.com 6

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • 2.5

Water and Agriculture Water and Agriculture Presentation Transcript

  • Water Science Research at Cranfield
    Simon Parsons
    Professor of Water Sciences
  • Internationally-recognized centre of excellence undertaking consultancy, research and training in science, engineering and management of water in the municipal, industrial and natural environments.
  • Centre for Water Science….expertise
    Biochem Engineering
    Risk
    Chemical Science
    Water Resources
    Water Sanitation
    Energy in W/WWT
    Int. water Development
    Chemical Engineering
    Water Management
    Membrane Science
    Water Policy
    Water Safety Plans
    Biological W/Water Treatment
    Water in Dev. Countries
    Agri-industry Water use
    Pollutants
    Water Treatment
  • 1.1 billion people lack access to a safe water supply …
    … inadequate quality …
  • … quantity
  • 2.2 billion people lack access to safe sanitation
  • Agriculture can use ~50% of all water abstracted
  • Should save 40-50% of water and improve product quality (Asda vs. Waitrose)
    Challenge is how
    to increase production without using more water
  • Making your cup of tea consumes 32.4 litres of water
  • http://www.waterfootprint.org/
  • So what are the major challenges
    facing the water industry?
  • 2004-06 drought was one of the worst in the last 100 years, hosepipe bans effected 16 million people
  • 30 - 40% of all tap water goes down the toilet
  • UK uses 750,000 tonnes of chemicals to treat drinking water and sewage each year
    0.1% of the chemical recycled
  • Energy used to:
    Supply 1 million litres of water 586 kWh
    Treat 1 million litres of sewage 634 kWh
    2-3% of UK total consumption
    Emission of greenhouse gas:
    Supply 1 Ml of water 0.289 tonnes
    Treat 1 Ml of sewage 0.406 tonnes
    0.5% of individuals annual footprint
  • GHG out
    Treated Water Out
    Wastewater IN
    Energy IN
    Sludge out
    Traditional sewage treatment produces waste materials and use energy:
    Sewage works
  • Here is an example of a research roadmap developed for Yorkshire Water as part of Strategic Partnership
    2040
    2010
    2020
    2030
    NOW
    • Zero net climate impact
    • Energy self-sufficiency
    • Fully automated works
    • 100% compliance
    • Reduce usage of electricity units by 25%
    • Reduce unit cost of production of water by 50%
    Energy
    Materials
    • Closed material loop
    Water
    resources
    • Optimised water balance
    Time
  • Council for Science and Technology, 2009
  • Council for Science and Technology, 2009
  • Council for Science and Technology, 2009
  • Council for Science and Technology, 2009
  • Council for Science and Technology, 2009
  • How to recover energy from sewage – a current approach
    from Severn Trent Water
  • However, there are egg digesters
    Technology is mature for large scale
  • Argentina
    Cambodia
    Venezuela & Brazil
    Lao
    And small digesters
  • Energy generation from food waste
  • Time for a rethink?Move to: A production facility:
  • What would we like to get to?
    Reuse water
    Wastewater IN
    Energy out
    Nutrients out
    Sewage works
  • Fortified anaerobic wastewater treatment could save energy
    wastewater
    polishing
    Primary sed.
    Second. sed.
    Effluent
    disposal
    Biogas
    Dewatering
    and re-use
    Influent split
    25-65%
    into the anaerobic
    reactor
    Anaerobic
    reactor
    44% savings in Energy
  • Full flow anaerobic MBR is moving towards energy neutral
  • What would we like to do?
    Reuse water
    Wastewater IN
    Energy out
    Nutrients out
    Sewage works
  • Is phosphorus just a problem, or can it be a resource?
    Source: United States Dept. of Agriculture Economic Research Centre
  • Struvite
  • Recovery
  • What would we like to do?
    Reuse water
    Wastewater IN
    Energy out
    Nutrients out
    Sewage works
  • Title
  • Nevada’s Lake Mead, the largest
    reservoir in the United
  • Water recycling is technically possible but challenge is social
  • Recovery and reuse of wastewater – need to be sure you know what's in it!
  • So what's my take home message about water at Cranfield?
    International leading research on sustainability is in water resources, energy and chemicals.
    Research is focussed on short and long terms solutions to municipal, industrial and agricultural needs.
    Run UK’s largest Water MSc programme producing 120 new graduates per year.
  • Thank you for listening
    Any questions?
    s.a.parsons@cranfield.ac.uk