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WATER TREATMENT GUIDE
COPYRIGHT© Vertex Hydropore 2010
Water
source has a major influence upon the choice of filtration,
purification and disinfection technology required. Technologies suitable
for one water source may be inefficient when used on another. For
example most disinfection processes are ineffective upon water with
high turbidity.
Below is a summary of technologies often considered for various water sources.
Disclaimer:
This information is provided as a guide only and may not be applicable
to your specific application. You should always obtain advice from a
water treatment specialist for each individual case. This
information must not be construed as a performance guarantee.
Rain water harvesting in enclosed tanks:
Coarse
filtration self cleaning screens or bag filter or
cartridge filter
Fine filtration self
cleaning ultrafilter or 1 micron cyst rated cartridge
Tannin reduction anion resin
Organic reduction activated carbon filtration
Disinfection
chlorine, ozone or ultraviolet irradiation (potable water
requirement only)
River water or dam water:
Coarse filtration backwashing multimedia filtration
Fine filtration self cleaning ultrafilter
Chemical reduction reverse osmosis @ 10 to 15 Bar
Disinfection
chlorine, ozone or ultraviolet
irradiation (potable water requirement only)
Town water:
Coarse filtration backwashing multimedia filtration plus bag filter or cartridge filter
Dechlorination activated carbon, sodium metabisulphite
Fine filtration 1 micron cartridge filter
Chemical reduction reverse osmosis @ 10 to 15 Bar; plus deionisation (electrodeionisation) for high purity applications
Disinfection chlorine, ozone, ultraviolet irradiation (potable water requirement only)
Spring water:
Coarse filtration self cleaning screens or bag filter or cartridge filter
Fine
filtration
self cleaning ultrafilter or 0.2 micron rated
cartridge
Disinfection ozone or ultraviolet irradiation (potable water requirement only)
Bore water:
Oxidation
air, chlorine, chlorine dioxide - only
when iron is present
Coarse filtration
backwashing multimedia filtration
plus bag filter or cartridge filter
Fine filtration 1 micron cartridge filter
Mineral salt reduction reverse osmosis @ 15 to 25 Bar
pH
adjustment
sodium hydroxide injection or calcite filter
Disinfection chlorine, ozone or ultraviolet irradiation (potable water requirement only)
Sea water:
Disinfection chlorine
Coarse
filtration
backwashing multimedia filtration plus bag filter or cartridge filter
Dechlorination activated carbon, sodium metabisulphite
Fine
filtration
1 micron cartridge filter or self cleaning
ultrafilter
Mineral salt reduction reverse osmosis @ 60 Bar
pH
adjustment
sodium hydroxide injection or calcite filter
Disinfection chlorine, ozone or ultraviolet irradiation (potable water requirement only)
Process water:
Coarse filtration backwashing multimedia filtration
Fine filtration self cleaning ultrafilter
Chemical reduction reverse osmosis
Disinfection chlorine, ozone or ultraviolet irradiation (Class A recycled water requirement only)
Grey water and black water:
Pretreatment
membrane bioreactor (MBR) or ultrafiltration
Disinfection ultraviolet
Chemical reduction reverse osmosis @ 10 to 15 Bar
Disinfection
chlorine, ozone or ultraviolet
irradiation (Class A recycled water requirement only)
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