In combination with the fluoride removal schemes for surface water determined in the previous study, a 500 m^3/d production test device was constructed, and continuous production tests were carried out to optimize the process operation parameters and to detennine the efficiency of the novel fluoride removal process. The results showed that the optimal operation parameters of the process were as follows: the dosage of mixed fluoride removal material was 100 mg/L, the floc reflux ratio was 15%, and the reaction time was about 20 min. Under the optimal conditions, the fluoride content in the effluent was maintained at about 0. 1 mg/L, the turbidity was about 0. 3 NTU, the aluminum content was about 0. 1 mg/L, and other major water quality parameters could meet the requirements in Standards for Drinking Water Quality ( GB 5749 - 2006).
China Water & Wastewater
surface source water with high-content fluoride