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AWWA B512-97
- Sulfur Dioxide
- standard by American Water Works Association, 01/01/1997
- Publisher: AWWA
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This standard covers sulfur dioxide, a compressed, nonflammable liquified gas, for use in the treatment of municipal and industrial water supplies to remove excess residual chlorine. Sulfur dioxide is corrosive to mild steel if moisture is present. The purpose of this standard is to provide the minimum requirements for sulfur dioxide, including physical, chemical, testing, packaging, and shipping requirements. Topics include: sampling; laboratory examination; test procedures for sulfur dioxide, nonvolatile residue, moisture, and heavy metals; and, the basis for shipment, acceptance, and rejection.