Nanotechnology for domestic water purification - Nanotechnology in Eco-efficient Construction - page 401

Setup
and
use

Flow rate/
water quantity

Filter/
media

Labour
demands Technology type Biological Organic Inorganic Useful life Unit Maintenance

Membranes Most all U Most all V - membrane

size

U U - < reverse osmosis Use comparable to reverse

osmosis membranes
Requires less frequent
maintenance

Devices 1-3.5 L/min U Unskilled Easy n/a

$3.00/m 2
media
$75-
20-200
fi lters
dep.
on size

Nanoceram Most all U ￿ Sea Salt

￿ Arsenic
￿ Chromium
￿ Lead
￿ Radionuclides
￿ Other U

1-1.5 L/min/
cm 3 media

U - 10X >
other
fi ber
fi lters

U- Unskilled Easy Infrequent

cleaning

retrofi tted

World fi lter ￿ Bacteria

￿ Parasites
￿ Viruses

U 4-6 L/hr - HH

unit 336 L/
hr - Village
unit

378 L - HH
unit
95,000 L
per fi lter
- Village
unit

$6.00-$11
- HH unit
$100-$150
- Village
unit

$0.80-
$0.90

n/a

* Costs assume mass production.
** Biological contaminants: Bacteria, Bacterial Spores, Giardia & Cryptosp. Cysts, Coliform, Fecal Coliform, DNA & RNA, Fungi, Mold, Parasites, Protozoa, and
Viruses Organic contaminants: Pest-, Herb-, & Insecticides, Industrial Effl uents, MTBE, PAHS, PCBs, VOCs, and others. Inorganic contaminants: Heavy Metals,
Nitrites, Salts, Asbestos, Radionuclides, Calcium, Magnesium, and others.
*** V: Variable depending on.
**** U: Exact amount unspecifi ed.