US 11,787,717 B2
Electrocatalytic fenton oxidation-electrochemical oxidation coupling process and apparatus for efficient treatment of chemical wastewater
Weiqing Han, Nanjing (CN); Tao Cui, Nanjing (CN); Kajia Wei, Nanjing (CN); Wei Li, Nanjing (CN); Lianjun Wang, Nanjing (CN); Xiaodong Liu, Nanjing (CN); Xiuyun Sun, Nanjing (CN); Jiansheng Li, Nanjing (CN); and Jinyou Shen, Nanjing (CN)
Assigned to NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, Nanjing (CN)
Appl. No. 17/57,050
Filed by NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, Nanjing (CN)
PCT Filed Feb. 24, 2020, PCT No. PCT/CN2020/076392
§ 371(c)(1), (2) Date Nov. 19, 2020,
PCT Pub. No. WO2021/159555, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 202010084018.X (CN), filed on Feb. 10, 2020.
Prior Publication US 2022/0048801 A1, Feb. 17, 2022
Int. Cl. C02F 9/00 (2023.01); C02F 1/461 (2023.01); C02F 1/467 (2023.01); C02F 1/66 (2023.01); C02F 101/34 (2006.01); C02F 101/38 (2006.01)
CPC C02F 9/00 (2013.01) [C02F 1/4672 (2013.01); C02F 1/46109 (2013.01); C02F 1/66 (2013.01); C02F 2001/46133 (2013.01); C02F 2001/46171 (2013.01); C02F 2101/34 (2013.01); C02F 2101/38 (2013.01); C02F 2201/4614 (2013.01); C02F 2301/046 (2013.01); C02F 2305/026 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electrocatalytic Fenton oxidation-electrochemical oxidation coupling process for efficient treatment of chemical wastewater, comprising an electrocatalytic Fenton oxidation step, an electrochemical oxidation step, and a pH adjustment step,
wherein an electrode in the electrocatalytic Fenton oxidation step is a tubular electrode,
wherein a current density is controlled to be 8-15 mA/cm2 and a spacing between an anode and a cathode is controlled to be 1-3 cm simultaneously in the electrocatalytic Fenton oxidation step so that oxygen produced at the anode reacts at the cathode to produce H2O2 with a mass concentration of 100-5,000 mg/L.