US 11,926,549 B2
Treatment process and treatment system of enhanced up-flow multiphase wastewater oxidation
Qifeng Yang, Nanning (CN); HongXiang Zhu, Nanning (CN); Guoning Chen, Nanning (CN); Hainong Song, Nanning (CN); Lihai Lu, Nanning (CN); Yanding Qin, Nanning (CN); Xi Liu, Nanning (CN); Yongli Chen, Nanning (CN); Hongfei Lin, Nanning (CN); Qianling Chen, Nanning (CN); and Jinglong Wang, Nanning (CN)
Assigned to Guangxi Bossco Environmental Protection Agency, Guangxi (CN)
Appl. No. 16/964,559
Filed by GuangXi Bossco Environmental Protection Technology, GuangXi (CN)
PCT Filed Jul. 4, 2019, PCT No. PCT/CN2019/094757
§ 371(c)(1), (2) Date Jul. 23, 2020,
PCT Pub. No. WO2020/258359, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 201910544298.5 (CN), filed on Jun. 21, 2019.
Prior Publication US 2021/0078887 A1, Mar. 18, 2021
Int. Cl. C02F 9/00 (2023.01); C02F 1/00 (2023.01); C02F 1/20 (2023.01); C02F 1/38 (2023.01); C02F 1/52 (2023.01); C02F 1/66 (2023.01); C02F 1/72 (2023.01); C02F 1/78 (2023.01); C02F 101/30 (2006.01); C02F 103/28 (2006.01)
CPC C02F 9/00 (2013.01) [C02F 1/001 (2013.01); C02F 2001/007 (2013.01); C02F 1/20 (2013.01); C02F 1/385 (2013.01); C02F 1/52 (2013.01); C02F 1/66 (2013.01); C02F 1/725 (2013.01); C02F 1/727 (2013.01); C02F 1/78 (2013.01); C02F 2101/30 (2013.01); C02F 2103/28 (2013.01); C02F 2201/784 (2013.01); C02F 2301/046 (2013.01); C02F 2305/026 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A process of an oxidation treatment of enhanced up-flow multiphase wastewater, comprising the following operation steps:
1) feeding refractory organic wastewater to an up-flow multiphase wastewater oxidation system (“system”), wherein the system comprises an up-flow multiphase wastewater oxidation tower, the oxidation tower is added with a Fenton reagent, a homogeneous catalytic accelerator, and a heterogeneous catalytic carrier;
2) feeding the wastewater subjected to the oxidation treatment to a solid-liquid separation system for solid-liquid separation treatment, feeding a separated liquid to a neutralization and degassing system, and feeding the separated heterogeneous catalytic carrier coated in the oxidation tower back to the oxidation tower to realize an effect of enriching a catalyst;
3) feeding the wastewater treated by the solid-liquid separation system to the neutralization and degassing system, the neutralization and degassing system comprising a neutralization tower and a degassing tower which are in communication with each other, mixing the wastewater with an added alkali liquor in the neutralization tower to adjust a pH of the wastewater to 5.5-7.5, and then degassing by stirring in the degassing tower, wherein
in the step 3) a mixed air containing ozone having a mass concentration of 1% to 10% is introduced to bottoms of the neutralization tower (13) and the degassing tower (19) for aeration, stirring, and gas stripping, the treatment in the neutralization tower (13) is performed for 15 min to 25 min, and the treatment in the degassing tower (19) is performed for 20 min to 30 min; and
4) feeding the wastewater subjected to the neutralization and degassing treatment to a flocculation and sedimentation system for sludge-water separation, the flocculation and sedimentation system comprising a flocculation and sedimentation tank, discharging a supernatant at an upper portion of the flocculation and sedimentation tank after the flocculation and sedimentation of the wastewater, and performing at a bottom of the flocculation and sedimentation tank (20), an outward harmless treatment after a pressure filtration of an iron sludge.