公开(公告)号：US10999141B2

公开(公告)日：2021-05-04

申请号：US16849389

申请日：2020-04-15

Applicant: CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES

Inventor： Jing Su ,  Yuanyuan Sun ,  Beidou Xi ,  Mao Lin ,  Juan Li ,  Mingxia Zheng ,  Danfeng Ji ,  Chang Liu

IPC: G06F15/173 ,  H04L12/24 ,  G01N33/18

Abstract: A multi-objective optimization method for groundwater pollution monitoring network, which mainly includes four steps: groundwater numerical value simulation, groundwater vulnerability assessment, the establishment of the monitoring network optimization model, and the solving of the optimization model. The core of the method is to establish a multi-objective optimization model aimed at establishing the least monitoring wells, monitoring the maximum pollutant concentration, and monitoring the maximum regional vulnerability value. Solving the optimization model by the algorithm and considering the relationship between the quality error and the number of monitoring wells comprehensively to determine the well number and location of the monitoring network.

公开(公告)号：US11850664B2

公开(公告)日：2023-12-26

申请号：US17451151

申请日：2021-10-15

Applicant: CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES

Inventor： Minda Yu ,  Mingxia Zheng ,  Beidou Xi ,  Jing Su ,  Yuanyuan Sun ,  Xiaosong He

IPC: B22F9/24 ,  B22F9/04 ,  C02F1/70 ,  C02F101/34

CPC classification number: B22F9/24 ,  B22F9/04 ,  C02F1/705 ,  B22F2009/043 ,  B22F2201/10 ,  B22F2301/35 ,  C02F2101/345

Abstract: A silicified modified zero-valent iron, whose surface layer is a silicon-containing oxide layer formed by silicate, which is obtained by the following method: dissolved silicate and micron iron powder are used as raw materials and mixed in proportion, and ball milling under an inert gas atmosphere to obtain the silicified modified zero-valent iron. The invention also discloses the application of silicified modified zero-valent iron in repairing polluted water bodies. The invention uses green silicate as silicon source to carry out surface silicification modification of micron zero-valent iron, which has simple operation, low cost and is convenient for large-scale production. Moreover, the prepared silicified zero-valent iron has good dispersibility, high reduction activity and strong recycling performance, and can be used for the treatment of various polluted water bodies and soil.

公开(公告)号：US11618871B2

公开(公告)日：2023-04-04

申请号：US16632352

申请日：2018-05-18

Applicant: CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES

Inventor： Mingxia Zheng ,  Jing Su ,  Beidou Xi ,  Xin Hao ,  Yuanyuan Sun ,  Mao Lin ,  Juan Li

IPC: C02F11/04 ,  C12M1/107 ,  C12M1/16 ,  C12M1/00 ,  C12M1/06 ,  C12M1/26 ,  C12M1/02 ,  C12M1/34 ,  C12P5/02

Abstract: An integrated two-phase anaerobic dry fermentation reactor based on a biomimetic principle of rumen includes a reactor body; wherein the reactor body includes a dry fermentation chamber, a secondary fermentation chamber, and a liquid storage chamber. The dry fermentation chamber is arranged at an upper portion of the reactor body. The liquid storage chamber is arranged at a bottom of the reactor body. The secondary fermentation chamber is arranged between the dry fermentation chamber and the liquid storage chamber in the reactor body. The dry fermentation chamber is connected to the secondary fermentation chamber by a porous structure.

公开(公告)号：US20220118516A1

公开(公告)日：2022-04-21

申请号：US17451151

申请日：2021-10-15

Applicant: CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES

Inventor： Minda Yu ,  Mingxia Zheng ,  Beidou Xi ,  Jing Su ,  Yuanyuan Sun ,  Xiaosong He

IPC: B22F9/24 ,  B22F9/04 ,  C02F1/70

Abstract: A silicified modified zero-valent iron, whose surface layer is a silicic-containing oxide layer formed by silicate, which is obtained by the following method: dissolved silicate and micron iron powder are used as raw materials and mixed in proportion, and ball milling under an inert gas atmosphere to obtain the silicified modified zero-valent iron. The invention also discloses the application of silicified modified zero-valent iron in repairing polluted water bodies. The invention uses green silicate as silicon source to carry out surface silicification modification of micron zero-valent iron, which has simple operation, low cost and is convenient for large-scale production. Moreover, the prepared silicified zero-valent iron has good dispersibility, high reduction activity and strong recycling performance, and can be used for the treatment of various polluted water bodies and soil.

公开(公告)号：US11249023B2

公开(公告)日：2022-02-15

申请号：US16907446

申请日：2020-06-22

Applicant: Chinese Research Academy of Environmental Sciences

Inventor： Xiaosong He ,  Mingxia Zheng ,  Beidou Xi ,  Guangchun Shan ,  Jing Su ,  Xuemei Fu ,  Yuanyuan Sun ,  Hongyu Ding

IPC: G01N21/64 ,  G01N33/18 ,  G01N21/94

Abstract: Provided are a rapid detection method for a condition of landfill leachate polluting groundwater and an application thereof. The rapid detection method includes: carrying out fluorescence detection on groundwater in a specific region of a landfill, and determining whether the groundwater is polluted according to a ratio of fluorescence intensities at specific excitation/emission wavelengths in a specific fluorescence region. The rapid detection method provided by the solution establishes characteristic fluorescence spectrum regions, fluorescence intensities and regular characteristics thereof of organic matters in leachate-polluted groundwater of a landfill in a fluorescence spectrum region, and can achieve the rapid detection of a condition of landfill leachate polluting groundwater by means of a portable fluorescence detector on site. The detection method provided by the solution is characterized by rapid detection, no need of chemical reagents, simple operation, high detection sensitivity and lower cost.