 |
Oklahoma Administrative Code (Last Updated: March 11, 2021) |
 |
TITLE 252. Department of Environmental Quality |
|
Chapter 656. Water Pollution Control Facility Construction Standards |
|
Subchapter 21. Disinfection Standards |
SECTION 252:656-21-4. Ozone disinfection
Latest version.
- Use of Ozone for disinfection. Requests for use of ozone disinfection shall be reviewed and approved on a case-by-case basis. All ozone systems shall meet the requirements established in OAC 252:626-9-4 including the following:(1) Disinfection by ozone shall meet requirements pursuant to OAC 252:656-27-3(b)(3).(2) Disinfection by ozone shall meet inactivation of microorganisms as required in OAC 252:656-27-3(a)(6).(3) Design shall identify the total CT requirement and evaluate ozone dose, potential ozone demand, plug flow contact time, and whether microflocculation of solids could cause compliance problems with other permit limits, such as effluent, TSS, and turbidity. These factors shall be determined based on one of the following:(A) pilot studies(B) a minimum of three (3) well documented analogous projects.(C) CT calculations, EPA LTIESWTR Disinfection Profiling and Benchmarking Technical Guidance Manual, EPA 816-R-03-004, May 2003.