Patent ID: 11939244
Assignee: UNIVERSITY OF GUELPH
Field: Environmental technology (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 17:
18. A controlled environment agricultural system comprising:
an irrigation system comprising one or more electrically-driven electrochemical flow cells (EFC) comprising at least one anode of a dimensionally stable ruthenium dioxide anode and at least one complementary cathode, each of the EFC fluidly connected to a source of fertigation water to be treated; and an irrigation water distribution system fluidly connected to the one or more electrically-driven EFC,
wherein flowing fertigation water through the electrochemical cell effects regenerative mediated electrolysis to regenerate free chlorine as a disinfection agent to control presence of a pathogen in said fertigation water while maintaining nutrient levels while one or more of current density, flow rate and pH are simultaneously adjusted,
wherein effluent treated fertigation water is collected, and
wherein the free chlorine in said treated fertigation water remains below phytotoxic thresholds of about 2.5 mg/L for crops.