Dechlorination of Treated Water using SO2 Containing Compounds
Information
Question | How do I calculate the amount of chemical required for dechlorination? |
Answer | Sulfur dioxide containing compounds, such as sodium metabisulfite, sodium bisulfite, and sodium thiosulfate are effective dechlorinating agents. The following table lists the amount of dechlorinating agent required per part of chlorine to be removed. Dechlorinating Chemical Parts required per part chlorine removed Agent Formula pH 4.0 pH 6.5 pH 9.0 pH 11.0 Sodium Metabisulfite Na2S2O5 1.47 1.47 1.47 1.47 Sodium Bisulfite NaHSO3 1.61 1.61 1.61 1.61 Sodium Thiosulfate Na2S2O3 2.67 2.23 1.60 1.00 For example, to dechlorinate water with a pH of 6.5 containing 50mg/L chlorine, 111.5mg/L of sodium thiosulfate anhydrous would be needed. |
File | CIQA-0107_H20 Dechlor With SO2.R1.pdf |
Keyword | 6840, 8100, 7763, 3534, 3557, 3556, 3552, 3550, 355, 3946, 3945, 3954, 5654, 5637, 4693, 4695, 7763, 8100, 6840, 5531, 4682, H371, H362, 7432, 7444, 7448, 5531,4682, h371, h362, 1321, Dechlorination of Treated Water using SO2 Containing Compounds, Sulfur |