Abstract
In order to prove the rules of bromide ion remove in coagulation treatment stage in drinking water, by carrying out laboratory coagulation test in simulated water and the Songhua River raw water samples, the effects of bromine ion removal by coagulation of PAC, FeCl3 and the compound ferrous were investigated. The results showed that when the dosage of PAC was 60mg/L, the average removal rate of bromine ion was 50.6% by coagulation in the simulated water samples, and the rate was 44.8% in raw water samples of the Songhua River. In the conditions of FeCl3 dosage 70mg/L, the average removal rate of bromine ion was 56.1% in the simulated water sample, and the rate was 55.2% in raw water. When Reduce the same turbidity of drinking water, the effect of bromide ions removal by FeCl3 coagulation was better than that of PAC. When the dosage of compound ferrous (Ferrosilicon ratio of 1:1) as coagulant was 16.8mg/L, the bromide ions removal rate up to 67.6%.
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