公开(公告)号：US20240336501A1

公开(公告)日：2024-10-10

申请号：US18628119

申请日：2024-04-05

申请人： NuQuatic, LLC

发明人： Carlos Borras ,  Donald A. Luke

IPC分类号： C02F1/463 ,  C02F1/461 ,  C02F101/10 ,  C02F101/36

CPC分类号： C02F1/463 ,  C02F1/46176 ,  C02F2101/105 ,  C02F2101/36 ,  C02F2303/18

摘要： A method of treating feed water includes adding a metal component to the feed water to form a clarified aqueous composition.

公开(公告)号：US20240327248A1

公开(公告)日：2024-10-03

申请号：US18744458

申请日：2024-06-14

申请人： Marquette University

发明人： Brooke Mayer ,  Kaushik Venkiteshwaran

IPC分类号： C02F1/28 ,  B01J20/34 ,  C02F101/10 ,  C02F103/34 ,  C12Q1/00 ,  G01N30/00 ,  G01N30/06 ,  G01N30/88

CPC分类号： C02F1/286 ,  B01J20/3475 ,  C12Q1/00 ,  G01N30/00 ,  G01N30/06 ,  C02F2101/105 ,  C02F2103/34 ,  C02F2303/16 ,  G01N30/88

摘要： The present invention provides systems and methods for concentrating and recovering phosphate from samples. The method comprises using immobilized PBP for binding phosphate and a desorption solution having a pH of 11 or greater to recover phosphate from a sample when the phosphate is found at very low detection levels. Further systems and method for removing arsenate for water sources is also provided.

公开(公告)号：US12103879B2

公开(公告)日：2024-10-01

申请号：US17488420

申请日：2021-09-29

申请人： YUNNAN HEXU ENVIRONMENTAL TECHNOLOGY CO., LTD.

发明人： Wensheng Li ,  Jianmin Zhang ,  Jun Yang ,  Weihua Chen ,  Zhishuai Wang ,  Hongchang Zhou ,  Peng Deng ,  Jing Liao

IPC分类号： C02F3/30 ,  C02F1/00 ,  C02F1/32 ,  C02F1/50 ,  C02F3/10 ,  C02F101/10 ,  C02F101/16

CPC分类号： C02F3/308 ,  C02F3/104 ,  C02F3/109 ,  C02F3/303 ,  C02F3/305 ,  C02F2001/007 ,  C02F1/32 ,  C02F1/50 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2201/005 ,  C02F2301/046 ,  C02F2303/04 ,  C02F2303/16

摘要： A method for advanced nitrogen and phosphorus removal in sewage treatment includes the following steps: feeding raw water and return sludge into a pre-denitrification zone for denitrification; allowing a sludge-containing mixed liquor discharged from the pre-denitrification zone to enter an anaerobic zone to undergo a biological phosphorus removal reaction; allowing a sludge-containing mixed liquor discharged from the anaerobic zone and a return nitrification liquid to enter an anoxic zone for denitrification; allowing a sludge-containing mixed liquor discharged from the anoxic zone to enter an aerobic zone for nitrification and excessive phosphorus uptake, and allowing part of a nitrification liquid to be returned to the anoxic zone; allowing a sludge-containing mixed liquor discharged from the aerobic zone to enter a sedimentation zone for separation; passing a resulting supernatant through a biological filtration zone; returning part of resulting sludge to the pre-denitrification zone; and the like.

公开(公告)号：US12103871B2

公开(公告)日：2024-10-01

申请号：US16628623

申请日：2018-07-03

申请人： CHEMTREAT, INC

发明人： William Henderson ,  Vladimir Djukanovic ,  Nicholas Seymour

IPC分类号： C02F1/52 ,  C02F1/66 ,  C02F101/10 ,  C02F101/14

CPC分类号： C02F1/5209 ,  C02F1/5245 ,  C02F1/66 ,  C02F2101/103 ,  C02F2101/105 ,  C02F2101/106 ,  C02F2101/14 ,  C02F2209/06 ,  C02F2209/07

摘要： A method for treating water to remove a target analyte that includes adding to the water a rare earth metal salt and a coagulant, and then removing the target analyte from the water. The treatment composition can be added as a blend that includes die coagulant and the rare earth metal salt.

公开(公告)号：US12084369B2

公开(公告)日：2024-09-10

申请号：US17416927

申请日：2021-04-22

申请人： JEREH ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD.

发明人： Yipeng Hu ,  Bin Zhang ,  Ruwei Deng ,  Rengang Liang

IPC分类号： B01D17/04 ,  B01D9/00 ,  B01D61/02 ,  B01D61/14 ,  B01D61/58 ,  B01D65/02 ,  B01D69/02 ,  B01D71/34 ,  C02F1/00 ,  C02F1/04 ,  C02F1/44 ,  C02F1/52 ,  C02F1/66 ,  C02F9/00 ,  C02F5/00 ,  C02F11/122 ,  C02F101/10 ,  C02F103/10

CPC分类号： C02F9/00 ,  B01D9/0018 ,  B01D17/047 ,  B01D61/025 ,  B01D61/027 ,  B01D61/147 ,  B01D61/58 ,  B01D65/02 ,  B01D69/02 ,  B01D71/34 ,  B01D2313/243 ,  B01D2325/02832 ,  B01D2325/02834 ,  C02F2001/007 ,  C02F1/048 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/52 ,  C02F1/66 ,  C02F5/00 ,  C02F11/122 ,  C02F2101/10 ,  C02F2101/105 ,  C02F2103/10 ,  C02F2209/06 ,  C02F2303/16

摘要： A wastewater treatment equipment and a treatment method of a wastewater are provided. The wastewater treatment equipment includes: a microfiltration unit, configured to receive and filter a wastewater to obtain a solution; a membrane salt separation unit, configured to receive the solution and separate monovalent ions and multivalent ions from the solution to obtain a first solution including the monovalent ions and a second solution including the multivalent ions; a first evaporative crystallization unit, configured to crystallize the first solution to form a monovalent salt; and a second evaporative crystallization unit, configured to crystallize the second solution to form a mixed salt; the microfiltration unit is connected to the membrane salt separation unit, and the first evaporative crystallization unit and the second evaporative crystallization unit are both directly connected to the membrane salt separation unit, the wastewater treatment equipment can achieve the standard discharge of wastewater.

公开(公告)号：US20240261756A1

公开(公告)日：2024-08-08

申请号：US18565382

申请日：2022-05-30

申请人： ALMA MATER STUDIORUM - UNIVERSITÀ DI BOLOGNA

发明人： Carlotta CARLINI ,  Antonio PRIMANTE ,  Nicolas GREGGIO

IPC分类号： B01J20/20 ,  B01J20/28 ,  B01J20/30 ,  C02F1/28 ,  C02F1/66 ,  C02F101/10

CPC分类号： B01J20/20 ,  B01J20/28004 ,  B01J20/3078 ,  C02F1/283 ,  C02F1/66 ,  B01J2220/42 ,  C02F2101/105

摘要： A method for the manufacture of a composite material for the recovery of nutrients and/or pollutants from wastewater, the method comprising, in succession, the following phases: supply of at least one carbonate material; supply of at least one carbonaceous material; mixing the carbonate material with the carbonaceous material to obtain a mixture; and heating the mixture to a temperature above 600° C. to obtain a composite material.

公开(公告)号：US12024446B2

公开(公告)日：2024-07-02

申请号：US17599919

申请日：2020-04-01

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY & YANCHENG ACADEMY OF ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING

发明人： Chendong Shuang ,  Shuangshuang Li ,  Tong Li ,  Guang Zhang ,  Aimin Li ,  Ke Wang ,  Juntian Wang

IPC分类号： C02F1/48 ,  C02F1/70 ,  C02F101/10 ,  C02F101/16

CPC分类号： C02F1/48 ,  C02F1/705 ,  C02F2101/105 ,  C02F2101/163

摘要： The present invention belongs to the technical field of water treatment, and in particular to a magnetic powder strengthened method for removing nitrate nitrogen and inorganic phosphorus, which includes the following steps: (1) mixing permanent magnetic material powder with paramagnetic Fe3O4 powder, and magnetizing the mixture in a magnetic field to prepare magnetic powder; (2) adding the magnetic powder directly or in a form of granular filler into a water treatment reaction vessel; and (3) allowing the to-be-treated water to enter the water treatment reaction vessel, performing a chemical reaction of removing nitrate nitrogen and inorganic phosphorus in the presence of a reducing agent, and discharging the water after the reaction is completed. By adopting the method of the present invention, a uniform and fine magnetic field can be provided, thus the reaction efficiency is improved, and the process is simplified and the cost is lowered.

公开(公告)号：US20240190724A1

公开(公告)日：2024-06-13

申请号：US18550722

申请日：2021-11-25

申请人： BEIJING DRAINAGE GROUP CO., LTD

发明人： Kuixiao LI ,  Yulong SHI ,  Qi XU ,  Gang WANG ,  Jiawei WANG ,  Haipeng BAO ,  Guanglu LI ,  Fuliang MA

IPC分类号： C02F1/28 ,  C02F1/00 ,  C02F101/10

CPC分类号： C02F1/28 ,  C02F1/001 ,  C02F1/008 ,  C02F2101/105 ,  C02F2201/005 ,  C02F2209/03 ,  C02F2209/42 ,  C02F2303/16

摘要： A bidirectional flow pulse-based water body phosphorus removal apparatus and a method, and an organic nutrient soil. The water body phosphorus removal apparatus includes: a prefiltration unit, a bidirectional flow phosphorus removal filtration pool, a bidirectional water collection and distribution system, a filtration pool stratified gas pulse system, a water production tank and a control system. A filtration layer filled with a phosphorus removal filtration material is provided in the bidirectional flow phosphorus removal filtration pool. The control system is used for controlling the bidirectional water collection and distribution system to alternately perform upward water in-and-out flow and downward water in-and-out flow on the bidirectional flow phosphorus removal filtration pool, so as to control the bidirectional flow phosphorus removal filtration pool to switch between an upward flow filtration adsorption mode for phosphorus removal and a downward flow filtration adsorption mode for phosphorus removal.

公开(公告)号：US20240140847A1

公开(公告)日：2024-05-02

申请号：US18502956

申请日：2023-11-06

申请人： COMPLETE FILTRATION RESOURCES, INC

发明人： LaVerne Gregorich ,  Jeremy Schiller ,  Simon Larson ,  Shane Wiercinski ,  John D. Ewing

IPC分类号： C02F9/00 ,  B01D61/14 ,  B01D61/16 ,  B01D63/06 ,  C02F1/44 ,  C02F1/52 ,  C02F11/127

CPC分类号： C02F9/00 ,  B01D61/145 ,  B01D61/16 ,  B01D63/069 ,  C02F1/444 ,  C02F1/5245 ,  C02F1/5281 ,  C02F11/127 ,  B01D2315/10 ,  C02F2101/105

摘要： A water treatment system includes a coagulating and flocculating system, an ultrafiltration membrane, and a fluid driver. The coagulating and flocculating system includes a first inlet for receiving water and a second inlet configured to receive a coagulating and flocculating agent. The coagulating and flocculating system is configured to precipitate dissolved phosphorous from the water, and to provide a flocculated effluent at an outlet of the coagulating and flocculating system. The ultrafiltration membrane includes an inlet that is fluidly coupled to an outlet of the coagulating and flocculating system. The ultrafiltration membrane is configured to separate the precipitated phosphorus from the flocculated effluent. The fluid driver is adapted to transfer the flocculated effluent from the outlet of the coagulating and flocculating system to the inlet of the ultrafiltration membrane at sustained flux rates of at least 150 LMH.

公开(公告)号：US11970415B2

公开(公告)日：2024-04-30

申请号：US17149756

申请日：2021-01-15

申请人： ZHEJIANG UNIVERSITY

发明人： Liang Zhu ,  Donghui Lu ,  Jianxun Chen ,  Chen Wang ,  Taixing Han ,  Xiangyang Xu

IPC分类号： C02F11/04 ,  C02F1/66 ,  C02F101/10

CPC分类号： C02F11/04 ,  C02F1/66 ,  C02F2101/105 ,  C02F2209/06 ,  C02F2303/18

摘要： The present invention discloses a sludge anaerobic fermentation treatment method with simultaneously enhanced acid production and phosphorus removal. The method includes steps of: (1) adding waste activated sludge into an anaerobic reaction system, with a concentration of a total suspended solid (TSS) of 10000-15000 mg/L; (2) maintaining a pH value of the waste activated sludge at 10±0.1; adding powdery magnetite of 0.3-0.9 g/gVS S. Compared with simple alkaline conditions, in the method of the present invention, an accumulation amount of short chain fatty acids (SCFAs) in a fermentation broth is increased by 20%, and a content of orthophosphoric acid is reduced by 10%. The method can further improve the enhancing effect by using sulfuric acid to modify the magnetite, the accumulation amount of SCFAs can be increased by 36.7% at most, and the content of phosphorus and refractory organic substances can be reduced by 32.4% and 40.4% at most, respectively.