Idaho Administrative Code
Title IDAPA 58 - Environmental Quality, Department of
Rule 58.01.16 - WASTEWATER RULES
Section 58.01.16.500 - FACILITY AND DESIGN STANDARDS FOR MUNICIPAL WASTEWATER TREATMENT OR DISPOSAL FACILITIES: DISINFECTION
Current through August 31, 2023
01. General. Disinfection of the effluent shall be provided as necessary to meet applicable standards. The design of new municipal wastewater treatment facilities, or municipal wastewater treatment facilities undergoing material modifications, shall consider meeting both the bacterial standards and the disinfectant residual limit in the effluent. The disinfection process shall be selected after due consideration of waste characteristics, type of treatment process provided prior to disinfection, waste flow rates, pH of waste, disinfectant demand rates, current technology application, cost of equipment and chemicals, power cost, and maintenance requirements as determined in the preliminary engineering report. Where a disinfection process other than chlorination, ultraviolet disinfection, or ozone is proposed, supporting data from pilot plant installations or similar full scale installations shall be required as a basis for the design of the system. (3-31-22)
02. Determining the Necessity For Disinfection of Sewage Wastewater Treatment Plant Effluent. (3-31-22)
03. Chlorine Disinfection. (3-31-22)
04. Dechlorination. (3-31-22)
05. Ultraviolet (UV) Radiation. (3-31-22)
06. Ozone. Ozone systems for disinfection shall be evaluated on a case-by-case basis. Design of these systems shall be based upon experience at similar full scale installations or thoroughly documented prototype testing with the particular wastewater. (3-31-22)