Section 217.272 - Capacity and Sizing of Gaseous Chlorine Disinfection and Sulfur Dioxide Dechlorination Systems(a) The capacity of a chlorine or a sulfur dioxide gas-withdrawal system must be based on the peak flow, in compliance with § 217.32(a)(1) of this title (relating to Organic Loadings and Flows for New Wastewater Treatment Facilities) and Equation K.1. in Figure: 30 TAC §217.272(a). Attached Graphic
(b) Table K.1. in Figure: 30 TAC §217.272(b) establishes the minimum acceptable design chlorine dosage for disinfection: Attached Graphic
(c) At the point of dechlorination, a dechlorination system must provide at least one unit of sulfur dioxide gas for each unit of residual chlorine.30 Tex. Admin. Code § 217.272
The provisions of this §217.272 adopted to be effective August 28, 2008, 33 TexReg 6843; Amended by Texas Register, Volume 40, Number 47, November 20, 2015, TexReg 8339, eff. 12/4/2015