(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).
(b) Table K.1. in Figure: 30 TAC §217.272(b) establishes
the minimum acceptable design chlorine dosage for disinfection:
(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.
Source Note: The provisions of this §217.272 adopted to be effective August 28, 2008, 33 TexReg 6843; amended to be effective December 4, 2015, 40 TexReg 8254