SYSTEM FOR MONITORING HYDROXYL RADICAL SCAVENGING INDEX IN WATER USING REAL-TIME MULTI-FLUORESCENCE ANALYZER AND PARALLEL FACTOR ANALYSIS APPARATUS, AND METHOD THEREFOR

    公开(公告)号:US20220411287A1

    公开(公告)日:2022-12-29

    申请号:US17781047

    申请日:2020-11-19

    摘要: Provided are a system for monitoring a hydroxyl radical scavenging index in water using a real-time multi-fluorescence analyzer and a parallel factor analysis apparatus and a method therefor, wherein the system monitors the hydroxyl radical scavenging index in water using the real-time multi-fluorescence analyzer and the parallel factor analysis apparatus, whereby it is possible to monitor the characteristics of an organic material in target water through a continuous flow analysis method without using an existing indicator material, rhodamine B. In addition, in a water treatment system having an advanced oxidation process (AOP) applied thereto in which ozone, ultraviolet rays, hydrogen peroxide, and the like are combined, it is possible to simply calculate the hydroxyl radical scavenging index in the target water through an organic material characteristic index for each component obtained by classifying the characteristic structure of the organic material in water using real-time fluorescence analysis by means of a parallel factor (PARAFAC) model. Accordingly, the amount of chemical injection and the amount of ultraviolet irradiation, which are process control variables, can be controlled, and under given operating variable conditions, the removal rate of a target material in water is predicted, whereby the system can also be used as a diagnostic tool for process evaluation in the advanced oxidation process. Furthermore, the system can provide operational convenience that enables process control while reducing the amount of power consumed in the advanced oxidation process even though the type of target material and the water quality characteristics of raw water change.

    CONCRETE STRUCTURE STRENGTHENED USING GRID REINFORCEMENT MATERIAL AND NON-SHRINK GROUT AND METHOD OF STRENGTHENING THE SAME

    公开(公告)号:US20220186510A1

    公开(公告)日:2022-06-16

    申请号:US17338679

    申请日:2021-06-04

    摘要: The present disclosure provides a concrete structure strengthened using a grid reinforcement material and non-shrink grout and a method of strengthening the same in which, when strengthening a concrete structure such as a concrete slab or a concrete wall body that is damaged or deteriorated, a grid reinforcement material is mounted on one side of the concrete structure, a formwork is formed on an outer side of the grid reinforcement material to have a required gap, and then the gap is filled with non-shrink grout so that the non-shrink grout is cured therein to strengthen the old concrete structure, thereby being able to automatically fill and repair cracks formed in the concrete structure just by injecting the non-shrink grout without separately performing crack repair on the old concrete structure. Also, the grid reinforcement material may be easily fixed or mounted using a grid fixing device and may be easily applied to strengthening of a concrete structure having a curved surface as well as a concrete structure having a flat surface such as a concrete slab or a concrete wall body. In addition, reinforcing bars may be additionally arranged in a gap between a surface of the concrete structure and the grid reinforcement material so that the grid reinforcement material increases a cover thickness, and thus the concrete structure is remarkably strengthened.

    Device for measuring water level by using capacitive technique, and method therefor

    公开(公告)号:US11326924B2

    公开(公告)日:2022-05-10

    申请号:US17257308

    申请日:2020-03-26

    发明人: Dong Sop Rhee

    IPC分类号: G01F23/263

    摘要: Disclosed in one embodiment are a device for measuring water level by using a capacitive technique, and a method therefor. A device for measuring water level comprises: an electrode unit which includes a first electrode and a second electrode arranged in parallel in a lengthwise direction, and which allow voltages to be applied to the first electrode and the second electrode; and a control unit for measuring the applied voltages, calculating the amount of reference charging time it takes to reach a second voltage from a predetermined first voltage on the basis of the measured voltages, and determining water level on the basis of the calculated reference charging time.