Tuesday, 29 March 2016

Draft Specification for Domestic (household) Defluoridation Filter Unit (DDFU/DDU) by Unicef

Fluoride is a normal constituent of most natural waters and its concentration varies depending on the water source. Surface waters seldom have fluoride concentrations beyond 0.3 mg/lit. Geological processes, weathering of fluoride bearing minerals and hydrogeological conditions can lead to higher fluoride levels in groundwater in certain areas, which can become endemic for fluorosis.

Link : http://www.watersanitationhygiene.org/References/EH_KEY_REFERENCES/WATER/Water%20Quality/Fluoride/Specifications%20for%20Domestic%20Defluoridation%20%28UNICEF%29.pdf

No comments:

Post a comment

Note: only a member of this blog may post a comment.