- (a) The owner of a PBF shall change or clean and disinfect all cartridge filters when the pressure differential between the influent and effluent lines of the filter reaches 6 pounds per square inch (psi) or the manufacturer’s recommended pressure differential, if less than 6 psi.
- (b) If no means of measuring the pressure differential is provided, cartridge filters shall be changed or cleaned and disinfected at least once per day.
- (c) Cartridge filters also shall be cleaned and disinfected in a concentrated chlorine solution or replaced in response to a violation of Env-Wq 1108.12.
Source. #10577, eff 5-1-14 (See Revision Note #2 at chapter heading for Env-Wq 1100); ss by #13198, eff 5-1-21 (see Revision Note #3 at chapter heading for Env-Wq 1100) (formerly Env-Wq 1105.17)