Civil Engineering Reference
In-Depth Information
Contaminants removed
Amount of water treated
Ease of use
Useful life/
chem.
quant.
Labour
demands
Setup and
use
Technology type
Biological
Organic
Inorganic
Flow rate
Cost (US$)
Maintenance
Sodium
hypochlorite
Bacteria
Coliform
Fecal
Coliform
Viruses
No
No
n/a
25 mL/mo.
$700-$2500
- Generator
$4.80-$9.60/
yr/hh
Unskilled
and
trained
Moderate
- Trained
person
must
generate
chemical
Chemical
storage
and
preparation
by rained
person
Bleaching
powder
$10/yr/hh
Easy
PuR®
Flocculant-
Disinfectant
Bacteria
Cysts*
Coliform
Fecal
Coliform
Parasites
Protozoa
Viruses
No
Arsenic
10 L/sachet
n/a
$.10/sachet
Unskilled
Easy
none
* Cysts: Giardia and cryptosporidium cysts.
** V: Variable depending on.
*** HH: Household (4-5 people).
Search WWH ::
Custom Search