6
ECOWATER
SYSTE MS Water, and Water Conditioning
2. IRONin water ismeasured in partsper million (ppm). The total* ppm of iron, and type ortypes*, isdetermined
by chemical analysis. Four different types of iron in water are:
¡Ferrous (clear water),
©Ferric (red water),
¢Bacterial and organically bound iron,
£Colloidal and inorganically bound iron (ferrous or ferric).
*Water may contain one ormore of the four types of iron and any combination of these. Total iron is the sum
of the contents.
¡Ferrous(clearwater)ironissolubleanddissolvesinwater.Itisusuallydetectedbytakingasampleofwater
inaclearbottleorglass.Immediatelyaftertaking,the sampleisclear.Asthewatersamplestands,itgradually
cloudsand turnsslightlyyelloworbrownasair oxidizesthe iron.This usuallyoccurs in15 to 30 minutes.This
unit will remove moderate amounts of this type of iron (see specifications).
When using the softener to remove Ferrous (clear water) iron, add 5 grains!to the hardness setting
for every 1 ppm of Ferrous (clear water) iron. !1 gpg = 0.959 _d = 1.71 _F
©Ferric (red water), and ¢Bacterial and organically bound irons are insoluble. This iron is visible
immediatelywhendrawnfroma faucetbecauseithasoxidizedbeforereachingthehome.Itappearsassmall
cloudyyellow,orange,orreddishsuspendedparticles.Afterthewaterstandsforaperiodoftime,theparticles
settle to the bottom of the container. Generally these irons are removed from waterby filtration. Chlorination
is also recommended for bacterial iron. This unit will not remove ferric or bacterial iron.
£Colloidaland inorganicallybound ironisof ferric orferrousformthat will not filter or exchange out ofwater.
In some instances, treatment may improve colloidaliron water, but always CONSULT A QUALIFIED WATER
CHEMISTRY LAB before attempting to treat it. Colloidal iron water usually has a yellow appearance when
drawn.Afterstandingforseveralhours,thecolorpersistsandtheirondoesnotsettle,butremainssuspended
in the water.
Iron in watercauses stains on clothing and plumbing fixtures. It negatively affects the taste of food, drinking
water, and other beverages. This unit will not remove colloidal iron.
3. ACIDITY or acid water is caused by carbon dioxide, hydrogen sulfide, and sometimes industrial wastes. Itis
corrosive to plumbing, plumbing fixtures, water heaters, and other water using appliances. In can also
damage and cause premature failure of seals, diaphragms, etc., in water handling equipment.
A chemicalanalysis is needed to measure the degree of acidity in water. This is called the pH of water. Water
testing below 6.9 pH is acidic. The lower the pH reading, the greater the acidity. A neutralizer filter or a
chemical feed pump are usually recommended to treat acid water.
4. SEDIMENT is fine, foreign material particles suspended in water. This material is most often clay or silt.
Extreme amounts of sediment may give the water a cloudy appearance. A sediment filter installed ahead
of the water softener normally corrects this situation.
