公开(公告)号：US11713253B2

公开(公告)日：2023-08-01

申请号：US17412893

申请日：2021-08-26

Applicant: NANJING HYDRAULIC RESEARCH INSTITUTE

Inventor： Qiuwen Chen ,  Hanlu Yan ,  Jianyun Zhang ,  Xueke Liao ,  Tianqi Yao ,  Zhiyuan Wang ,  Cheng Chen

IPC: C01F7/785 ,  C02F1/28 ,  C02F101/36

CPC classification number: C01F7/785 ,  C02F1/288 ,  C01P2002/22 ,  C01P2002/85 ,  C01P2004/62 ,  C01P2004/64 ,  C02F1/281 ,  C02F2101/36 ,  C02F2305/08

Abstract: It discloses a method for preparing a magnesium-aluminum hydrotalcite-loaded nano zero-valent iron material for specifically removing perfluorooctanoic acid in a water environment and an optimized process for removing perfluorooctanoic acid thereby, and relates to the technical field of removing persistent organic pollutants in water using adsorption method and oxidation-reduction method and, in particular, to a composite material prepared by loading a nano zero-valent iron on magnesium-aluminum hydrotalcite using liquid phase reduction method.

公开(公告)号：US20220234906A1

公开(公告)日：2022-07-28

申请号：US17412893

申请日：2021-08-26

Applicant: NANJING HYDRAULIC RESEARCH INSTITUTE

Inventor： Qiuwen Chen ,  Hanlu Yan ,  Jianyun Zhang ,  Xueke Liao ,  Tianqi Yao ,  Zhiyuan Wang ,  Cheng Chen

IPC: C01F7/00 ,  C02F1/28

Abstract: It discloses a method for preparing a magnesium-aluminum hydrotalcite-loaded nano zero-valent iron material for specifically removing perfluorooctanoic acid in a water environment and an optimized process for removing perfluorooctanoic acid thereby, and relates to the technical field of removing persistent organic pollutants in water using adsorption method and oxidation-reduction method and, in particular, to a composite material prepared by loading a nano zero-valent iron on magnesium-aluminum hydrotalcite using liquid phase reduction method.

公开(公告)号：US10415202B2

公开(公告)日：2019-09-17

申请号：US16100242

申请日：2018-08-10

Applicant: Nanjing Hydraulic Research Institute

Inventor： Qiuwen Chen ,  Li Wang ,  Yuqing Lin ,  Liuming Hu ,  Tiesheng Guan ,  Cheng Chen ,  Ranran Feng

IPC: A01K61/10 ,  E02B3/10 ,  E02B7/20 ,  E02B7/40 ,  A01K61/70 ,  E02B1/00 ,  G01C13/00 ,  E02B8/08

Abstract: A method for controlling the gate based on the habitat requirement for fish overwintering in rivers. According to the characteristics of biological habitat of the river and the habitat demand of fishes during overwintering, the method specifically comprises the steps of: firstly, determining candidate fishes for ecological flow calculation though fish resources investigating and historical data, and then screening out the target fish by adopting hierarchical analysis method; Secondly, establishing a quantitative response relationship curve between target fish physiological adaptions and water temperature, obtaining ecological water level which ensures the target fish overwintering safely according to the vertical temperature distribution, and establishing the relation between water depth and discharge using hydrodynamic model; finally, setting up a gate control system including a radar water level meter in the overwintering areas and an ecological water level management system in a gate control room.