Fluoride removal in a water treatment plant using alum
Fluoride removal in a water treatment plant using alum
(OP)
I am looking for any information about removing fluoride from groundwater using alum. the source water has 12 mg/l of fluoride and 110 ug/l of arsenic, ph is 8.3 and the water is 112 - 118 degrees F. my research tells me that alum will remove the arsenic, and will have an effect on the fluoride. I need to know how much of an effect, and is there any place I can find this information?
thank you.
h2oman
thank you.
h2oman





RE: Fluoride removal in a water treatment plant using alum
RE: Fluoride removal in a water treatment plant using alum
RE: Fluoride removal in a water treatment plant using alum
http://awwa.org/science/sun/qom/QOM-10-01.cfm
You might purchase the textbook "Water Quality and Treatment" published by the AWWA.
RE: Fluoride removal in a water treatment plant using alum
If you can use bone char to remove fluoride effectively, let's say 90 % removal, remaining concentration is still higher than its standard for drinking water. It can cause flourosis, anyway.
I found this information from "Water Treatment Principles and Design" by James M Montgomery that fluride was reduced from 3.6 to 1.4 mg/L using 250 mg/L of alum.
hope it can give you some idea.
RE: Fluoride removal in a water treatment plant using alum
(I´m working on F-, I´m also looking for F- removal wastewater treatment.) CaF2 is very insoluble but I think it is not enought for drinking-water. No bad will do to use Ca(OH)2 to adjust pH.
You may need a poliacrilamide as floculant.
I recommend laboratory assays (Jar Tests) and analysis.
RE: Fluoride removal in a water treatment plant using alum
Included is a discussion of ferric ion coprecipitation of arsenic. This should tie into removal of Flouride with ferric chloride.
Also included is a rather extensive list of references relating to arsenic treatment
Hope this info is useful