US 11,912,595 B2
Groundwater circulation well system with pressure-adjustable hydrodynamic cavitation
Shengyan Pu, Sichuan Province (CN); Hui Ma, Sichuan Province (CN); Yuming He, Sichuan Province (CN); Xiaoguang Wang, Sichuan Province (CN); Guangyong Zeng, Sichuan Province (CN); Yi Chen, Sichuan Province (CN); Dong Yu, Sichuan Province (CN); and Wenwen Ji, Sichuan Province (CN)
Assigned to CHENGDU UNIVERSITY OF TECHNOLOGY, Chengdu (CN)
Filed by CHENGDU UNIVERSITY OF TECHNOLOGY, Sichuan Province (CN)
Filed on Feb. 22, 2023, as Appl. No. 18/112,588.
Claims priority of application No. 202210191034.8 (CN), filed on Feb. 28, 2022; and application No. 202210595755.5 (CN), filed on May 26, 2022.
Prior Publication US 2023/0271861 A1, Aug. 31, 2023
Int. Cl. C02F 1/72 (2023.01); C02F 1/34 (2023.01)
CPC C02F 1/72 (2013.01) [C02F 1/34 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A groundwater circulation well system with pressure-adjustable hydrodynamic cavitation, the system comprising a plurality of hydrodynamic cavitators (17) which are suspended in a circulation well and produces a hydrodynamic cavitation effect for groundwater under different operating conditions, wherein
each of the hydrodynamic cavitators (17) is provided with a vortex chamber (18) and a negative pressure chamber (12) in a flow direction of the groundwater such that hydrodynamic cavitation bubbles generated in the vortex chamber (18) of each of the hydrodynamic cavitators (17) by the contaminated groundwater are capable of collectively breaking in the negative pressure chamber (12) based on a sudden pressure change, energy from collapsing and bursting of the hydrodynamic cavitation bubbles being capable of activating a remediation agent to effectively degrade organic contaminants in the groundwater; and
each of the hydrodynamic cavitators (17) is provided, inside the vortex chamber (18) thereof, with a plurality of vortex water inlet columns (15) capable of changing a water passing aperture, in a manner that enables the contaminated groundwater to generate the hydrodynamic cavitation bubbles,
each of the hydrodynamic cavitators (17) is capable of changing a bubbling pressure and a breaking pressure of the hydrodynamic cavitation bubbles based on adjustment of a width and length of the water passing aperture of each of the vortex water inlet columns (15),
wherein the hydrodynamic cavitators (17) are arranged in parallel in the circulation well according to sizes of the hydrodynamic cavitators (17), and each of the hydrodynamic cavitators (17) is provided with the vortex water inlet columns (15) arranged in its vortex chamber (18) according to the rate of flow to be treated,
wherein the vortex water inlet columns (15) for generating the hydrodynamic cavitation bubbles are arranged at an outlet at a tail end of the vortex chamber (18) of each of the hydrodynamic cavitators (17), outlets at tail ends of the vortex water inlet columns (15) are connected to an inlet end of the negative pressure chamber (12) such that the hydrodynamic cavitation bubbles generated by passing through the vortex water inlet columns (15) are capable of directly entering the negative pressure chamber (12); and the hydrodynamic cavitation bubbles break and burst under the effect of a sudden pressure change, and energy generated from bursting is transferred to adjacent hydrodynamic cavitation bubbles to accelerate the process of collective breaking of the hydrodynamic cavitation bubbles.