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公开(公告)号：US20250115498A1
公开(公告)日：2025-04-10
申请号：US18905017
申请日：2024-10-02
Applicant: MEGA UNION TECHNOLOGY INCORPORATED
Inventor： KUO-CHING LIN , SHR-HAN SHIU , HUNG-EN LIN , YI-QING CHEN
IPC: C02F1/52 , C02F1/58 , C02F101/14
Abstract: A two-stage system and method for treating fluoride-containing wastewater are provided. The two-stage system includes a first concentration defluoridation section and a second concentration defluoridation section. In the first concentration defluoridation section, the first mixed wastewater containing high concentration of fluoride ions is mixed with calcium chloride and stirred in the second mixing tank to obtain the second mixed wastewater containing low-concentration fluoride ions; in the second concentration defluoridation section, the second mixed wastewater is mixed with an advanced defluoridation agent and stirred in the third mixing tank to form a third mixed wastewater; the third mixed wastewater is introduced into a flocculation tank from the third mixing tank; and polymer is added for flocculation and sedimentation, so as to discharge a sediment and a defluoridation wastewater, the fluoride ion of which is less than 15 ppm.
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公开(公告)号：US20250115499A1
公开(公告)日：2025-04-10
申请号：US18904997
申请日：2024-10-02
Applicant: MEGA UNION TECHNOLOGY INCORPORATED
Inventor： KUO-CHING LIN , SHR-HAN SHIU , HUNG-EN LIN , YI-QING CHEN
IPC: C02F1/68 , C02F1/58 , C02F1/66 , C02F101/14 , C02F103/34
Abstract: An advanced defluoridation agent and a method for removing fluoride ions in fluorine-containing wastewater are provided. The advanced defluoridation agent includes 40-70 wt % of polyaluminum sulfate, 0.3-30 wt % of hydroxyapatite and deionized water supplemented to 100 wt %. Using the advanced defluoridation agent of the present disclosure to treat fluoride-containing wastewater can achieve increased defluorination efficiency, reduced electrical conductivity, and reduced sludge content, and a better defluorination effect. The concentration of fluoride ions is lower than 15 ppm after using the advanced defluoridation agent of the present disclosure.
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3.发明申请公开(公告)号：US20250100881A1
公开(公告)日：2025-03-27
申请号：US18891730
申请日：2024-09-20
Applicant: MEGA UNION TECHNOLOGY INCORPORATED
Inventor： KUO-CHING LIN , SHR-HAN SHIU , YI-SYUAN HUANG
Abstract: A recycling system and method for treating waste sulfuric acid solution containing hydrogen peroxide are provided. The recycling system includes a preheat subsystem, a reaction cycle control subsystem, and a cooling subsystem. The preheat subsystem heats the waste sulfuric acid solution to a target temperature through a cyclic heat exchange method and then further raises the temperature using an acid-resistant heater. The reaction cycle control subsystem monitors the sulfuric acid concentration, hydrogen peroxide content, reaction temperature, and nitrate compound content of the waste sulfuric acid solution to determine the amount and mode of addition of a nitrate-containing promoter. The cooling subsystem includes a first cooling heat exchanger to transfer waste heat to the initial waste sulfuric acid solution and a second cooling heat exchanger to reduce the sulfuric acid to a safe temperature, thereby avoiding overheating.
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公开(公告)号：US20220002891A1
公开(公告)日：2022-01-06
申请号：US17017337
申请日：2020-09-10
Applicant: MEGA UNION TECHNOLOGY INCORPORATED
Inventor： KUO-CHING LIN , YUNG-CHENG CHIANG , SHR-HAN SHIU , WEI-RONG TEY , YU-HSUAN LI
Abstract: A method and device of removing and recycling metals from a mixing acid solution, includes adsorbing a mixing acid solution with a pH value of −1 to 4 and a cobalt ion concentration of 100 to 1,000 mg/L by at least two cation resins in series setting to the cobalt ion concentration in the mixing acid solution is less than 10 mg/L, and then adjusting the pH value of the mixing acid solution after adsorption to meet a discharge standard, wherein the particle size of the at least two cation resins in series setting is 150˜1,200 μm. After the cation resins are saturated by adsorption, regenerating the cation resins by sulfuric acid to form a cobalt sulfate solution, and then electrolytically treating the cobalt sulfate solution to obtain electrolytic cobalt and sulfuric acid electrolyte. The operation process is simple without complicated equipment, and it can effectively recycle metals from mixing acid solutions. The cationic resin and sulfuric acid solution can also be reused, so the method of the present invention has environmental and economic benefits.
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