Recycling is the future for water suppliesin arid regions

Jonathan Damora

Viterbi School of EngineeringUniversity of Southern California

June 22, 2015

http://www.aroundme.com/locations/10785/post-shocking-before-and-after-pictures-of-california-taken-only-3-years-apart-prove-how-severe-the-drought-is#page=1

This talk discusses the current state of recycled water

Water reuse and recycling rationale

2

Water recycling in practice

Technology of recycled water

Recycling allows retention of limited water supplies and thus requires less water input to meet demand

3Adapted from: http://www.athirstyplanet.com/your_h20/our_water_cycle.pdf

Recycling allows retention of limited water supplies and thus requires less water input to meet demand

3Adapted from: http://www.athirstyplanet.com/your_h20/our_water_cycle.pdf

Recycled water is treated to higher standards than drinking water, to ensure safety

4

Microfiltration and Ultrafiltration

Recycled water is treated to higher standards than drinking water, to ensure safety

4

http://whattalking.com/picasa/nano

Microfiltration and Ultrafiltration

Recycled water is treated to higher standards than drinking water, to ensure safety

4

Removes viruses, bacteria, and any suspended solids

0.1 µm -MF0.01 µm -UF

Microfiltration and Ultrafiltration

Reverse Osmosis

Recycled water is treated to higher standards than drinking water, to ensure safety

4

Removes viruses, bacteria, and any suspended solids

0.1 µm -MF0.01 µm -UF

http://synderfiltration.com/learning-center/articles/module-configurations-process/hollow-fiber-membranes/

Microfiltration and Ultrafiltration

Reverse Osmosis

Recycled water is treated to higher standards than drinking water, to ensure safety

4

Removes viruses, bacteria, and any suspended solids

0.1 µm -MF0.01 µm -UF

Removes dissolved ions

0.0001 µm

Microfiltration and Ultrafiltration

Reverse Osmosis

Recycled water is treated to higher standards than drinking water, to ensure safety

4

Removes viruses, bacteria, and any suspended solids

0.1 µm -MF0.01 µm -UF

Removes dissolved ions

0.0001 µm

http://www.microbiologyonline.org.uk/about-microbiology/introducing-microbes/overview

Microfiltration and Ultrafiltration

Reverse Osmosis Advanced Oxidation

Recycled water is treated to higher standards than drinking water, to ensure safety

4

Removes viruses, bacteria, and any suspended solids

0.1 µm -MF0.01 µm -UF

Removes dissolved ions

0.0001 µm

http://www.ozon-uv.com/aop.htm

Microfiltration and Ultrafiltration

Reverse Osmosis Advanced Oxidation

Recycled water is treated to higher standards than drinking water, to ensure safety

4

Removes viruses, bacteria, and any suspended solids

0.1 µm -MF0.01 µm -UF

Removes dissolved ions

0.0001 µm+

Creates free radicals to destroy any trace organic compounds

Ultraviolet light

Hydrogen Peroxide, Titanium Dioxide, or Ozone

Orange County’s Groundwater Replenishment System directly saves 100 million gallons of fresh water per day

5

Groundwater injection for sea water barrier

Purified Water infiltrating into groundwater

http://www.digitaljournal.com/image/139151http://www.gwrsystem.com/images/stories/AboutGWRS/GWRS%20Technical%20Brochure.pdf

http://www.gwrsystem.com/images/stories/AboutGWRS/GWRS%20Technical%20Brochure.pdf

Orange County’s Groundwater Replenishment System directly saves 100 million gallons of fresh water per day

5

Groundwater injection for sea water barrier

Purified Water infiltrating into groundwater

http://www.digitaljournal.com/image/139151http://www.gwrsystem.com/images/stories/AboutGWRS/GWRS%20Technical%20Brochure.pdf

http://www.gwrsystem.com/images/stories/AboutGWRS/GWRS%20Technical%20Brochure.pdf

Humanity needs to establish safe water sources not

In summary, the use of recycled water will grow as populations continue to increase

6

safe water sources not impacted by climate

http://www.gwrsystem.com/images/stories/AboutGWRS/GWRS%20Technical%20Brochure.pdf