Nanotechnology for domestic water purification - Nanotechnology in Eco-efficient Construction - page 398

Table 16.6 Comparison of POU nanotechnology-based water purifi cation technologies (adapted from Hillie et al. , 2007b)

Contaminants removed Amount of water treated Cost (US$)* Ease of use

Technology
type

Flow rate/
water quantity

Useful
life

Labour
demands

Setup and
use Biological Organic Inorganic Unit Filter/media Maintenance

Cell pore Bacteria U ￿ Arsenic

￿ Lead
￿ Other U

U - 100X >
other
organic
membranes

U U- U -

competitive

Unskilled Moderate

- biolayer
must be
established

Biweekly fi lter
cleaning retrofi tted

Nanopore ￿ Bacteria

￿ Coliform
￿ Fecal
Coliform
￿ Fungi
￿ Viruses

U U V*** - source

water
quality and
membrane
size

U Unskilled Easy Infrequent

steam
sterilization

SAMMS No No ￿ Arsenic

￿ Cadmium
￿ Chromium
￿ Lead
￿ Mercury
￿ Radionuclides
￿ Other U

U - 13X > Indefi nite $150/kg Unskilled

and
trained

Moderate Occasional

regeneration
by trained
person

other
adsorbents