Applilication of Active Alumina Method for Groundwater Treatment of High Fluoride Area

Abstract：By adopting activated alumina method to reduce fluoride concentration of groundwater in the high fluoride area, the mechanism of removing fluorine, optimum throwing quantity and influencing factors is studied in the paper.The result indicated that fluoride concentration was less than 1 mg/L when 6 g active alumina was put into 300 ml water sample which fluorine concentration was 1.75 mg/L and other water quality parameters also reached drinking water standards.The best treatment effect of activated alumina method was under the acid condition, below 26 ℃ and about 20 minutes reaction time.Activated alumina also can be regenerated by using of alum, hydrochloric acid and aluminum sulfate.

Keyword：high flouride groundwater;activated alumina;removing fluorine;influencing factors;