Method for treating hospital sewage by using ozone diffusion electrode as anode through electro-catalysis of ozone

• Main Authors: HE CHUANSHU, XIONG ZHAOKUN, ZHOU PENG, LIU YANG, LAI BO, ZHANG HENG, WEI YAHAN
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a method for treating hospital sewage by using an ozone diffusion electrode as an anode through electro-catalysis of ozone, which comprises the following steps: adding hospital sewage to be treated into a wastewater treatment container provided with a plate type cathode and a porous diffusion anode, continuously introducing ozone or mixed gas of ozone and oxygen into the porous diffusion anode, and starting a direct-current power supply connected with the plate type cathode and the porous diffusion anode, and treating for 5-30 minutes under the condition that the current density is 5-20 mA/cm < 2 >, thereby finishing the treatment of the hospital sewage. The plate type cathode is a metal plate, and the porous diffusion anode is graphite felt or foamed nickel. According to the invention, the problems of metal ion dissolution and precipitate generation caused by taking an iron plate and other metal plates as the anode in the prior art are solved, the service life of the metal plate is pro