公开(公告)号：US20220324733A1

公开(公告)日：2022-10-13

申请号：US17606231

申请日：2020-04-27

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Takahiro TAIRA ,  Tadao HAYASHI ,  Nobuo FUKITA ,  Hirotoshi YOSHIDA

IPC分类号： C02F1/52 ,  C02F1/56

摘要： A water treatment method including a removal step of removing a polymer (I) containing a polymerization unit (I) based on a monomer represented by the following general formula (I) from water containing the polymer (I): CX1X3═CX2R(—CZ1Z2-A0)m  (I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more. Further, the number average molecular weight of the polymer (I) to 0.3×104 or more. Also disclosed is a composition including the polymer (I) containing the polymerization unit (I) based on a monomer represented by general formula (I), and where the composition has a content of the polymer (I) of 250 ppm or less.

公开(公告)号：US11466191B2

公开(公告)日：2022-10-11

申请号：US17061106

申请日：2020-10-01

申请人： TERRALITHIUM LLC

发明人： Stephen Harrison ,  John Burba, III

IPC分类号： C09K5/10 ,  C09K5/04 ,  E21B43/25 ,  C01D3/04 ,  C22B26/00 ,  C22B13/00 ,  C22B19/00 ,  C02F9/00 ,  B01J20/08 ,  C01D15/00 ,  C01B33/26 ,  C01F7/46 ,  C02F1/26 ,  C02F1/42 ,  C02F1/52 ,  C02F1/56 ,  C02F1/66 ,  C02F1/74 ,  C02F5/00 ,  C22B3/14 ,  C02F1/28 ,  C02F101/10 ,  C02F101/20 ,  C02F103/06 ,  C02F103/08 ,  C02F103/10

摘要： This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines. Exemplary compositions contain concentration of lithium ranges from 0 to 200 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like arsenic, barium, and lead.

公开(公告)号：US11465923B2

公开(公告)日：2022-10-11

申请号：US16984039

申请日：2020-08-03

申请人： SOSYSTEMS, INC.

发明人： George Frigon

IPC分类号： C02F9/00 ,  C02F1/00 ,  C02F1/70 ,  C02F1/04 ,  C02F1/28 ,  C02F1/44 ,  C02F3/04 ,  C02F3/12 ,  C02F1/52 ,  C02F1/32 ,  C02F1/50 ,  C02F103/00

摘要： Disclosed are wastewater treatment systems and methods of treating wastewater. In particular, this disclosure provides a method of lowering the biological oxygen demand, total nitrogen, total suspended solids, and phosphorous within wastewater containing human excrements. In addition to improving the quality of the wastewater on a per Liter basis, this disclosure also provides methods and systems that reduce the absolute quantity of total nitrogen, total suspended solids, and phosphorous released into the environment through effluent. The disclosed methods and systems also provide ways of reintroducing water into the environment.

公开(公告)号：US11465909B2

公开(公告)日：2022-10-11

申请号：US16084191

申请日：2017-03-22

申请人： Brand Pack (Pty) Ltd

发明人： Peter James Buchan ,  Geordie Thain Mills

IPC分类号： C01F17/271 ,  C01B33/12 ,  C02F1/52 ,  C02F1/68 ,  C02F103/42

摘要： The invention provides a composition of particulate materials. The composition comprises lanthanum chloride in particulate form. The composition also comprises up to about 4% by weight of amorphous silica in particulate form, based on the combined weight of the lanthanum chloride and the amorphous silica. The addition of amorphous silica to desiccated lanthanum chloride forms a fine coating or barrier on the outer surfaces of the individual lanthanum crystals, providing a composition that is significantly more stable and able to resist coalescence of particles than pure desiccated lanthanum chloride.

公开(公告)号：US20220306509A1

公开(公告)日：2022-09-29

申请号：US17840297

申请日：2022-06-14

申请人： Graymont Western Canada Inc.

发明人： Michael John Tate ,  Jared Ira Leikam ,  Jesse Wayne Fox ,  Nikolas Andrei Romaniuk

IPC分类号： C02F11/122 ,  C02F1/52 ,  C02F11/127 ,  C02F11/145 ,  C02F11/121 ,  C02F11/143

摘要： Methods and systems for treating oil sands tailings streams at an elevated pH using lime are disclosed herein. In some embodiments, the method comprises providing a tailings stream including 10-55% solids by total weight, increasing the pH of the tailings stream by combining the tailings stream with lime to produce a lime-tailings mixture having a pH of at least 11.0, and dewatering the lime-tailings mixture to produce a first stream having 10% or less solids by total weight and a second stream having 50% or more solids by total weight. The first stream can correspond to a release water stream, and the second stream can correspond to a cake. The lime slurry can include about 10% lime by total weight, and can comprise lime hydrate, quicklime, or a combination thereof. Dewatering the lime-tailings mixture can include routing the lime-tailings mixture to a centrifuge unit and/or a pressure or vacuum filtration unit.

公开(公告)号：US11446591B2

公开(公告)日：2022-09-20

申请号：US17017068

申请日：2020-09-10

申请人： SAUDI ARABIAN OIL COMPANY

发明人： Rakan Wajdi Banna ,  Ahmed Mohsen Orfali ,  Imran A. Khan ,  Ensan Mahmoud El-ayoubi ,  Abdulaziz Y. Asiri ,  Mirza Mansoor Baig

IPC分类号： B01D29/21 ,  C02F1/00 ,  B01D39/16 ,  C02F1/50 ,  C02F1/52 ,  C02F103/08

摘要： A lateral filter, a method of its use, and a system incorporating at least one lateral filter are provided. The lateral filter includes a filter screen that includes a screen wire and screen support rod comprise a non-metallic material and are a unitary, integrated, inseparable, and singular component. In using the lateral filter, a fluid entrained with solids is introduced through an exterior-facing side and permeate forms in the interior of the filter. The solids remaining in the permeate, if any, have a smallest dimension that is less than a width of a slot in the filter screen. The permeate passes from the interior of the lateral filter. Lateral filters may be incorporated into a system comprising many lateral filter, such as sand filter is configured to filter raw seawater.

公开(公告)号：US20220281765A1

公开(公告)日：2022-09-08

申请号：US17824370

申请日：2022-05-25

申请人： Douglas G. Kelley

发明人： Douglas G. Kelley

IPC分类号： C02F11/04 ,  B01D19/04 ,  C02F1/52

摘要： Compositions, systems, and methods of using alkaline-producing Aluminate salts in the sludge collection and digestion steps of wastewater processing to reduce acidity and/or build alkalinity, reduce hydrogen sulfide release, and reduce phosphate in the effluent.

公开(公告)号：US11427486B2

公开(公告)日：2022-08-30

申请号：US16727868

申请日：2019-12-26

申请人： DOOSAN ENERBILITY CO., LTD.

发明人： Yong Hae Park ,  Sung Won Park ,  Byung Sung Park ,  Sung Woo Woo

IPC分类号： C02F1/52 ,  B01D61/04 ,  C02F9/00 ,  C02F1/24 ,  C02F1/28 ,  C02F1/44 ,  C02F1/00 ,  C02F103/08

摘要： A nonpowered mixing and coagulation basin is provided, which generates turbulences of at least two kinds inside the mixing and coagulation basin to which the raw water flows so that foreign matters contained in the raw water come into contact with each other while circulating by a water flow to be coagulated into a predetermined size, and a dissolved air floatation device using the same. The nonpowered mixing and coagulation basin has multiple stages with different packing materials and packing densities to form turbulent flows inside the raw water and control a flow speed, thereby uniformly mixing raw water and coagulant to enhance coagulation efficiency. The nonpowered mixing and coagulation basin simultaneously carries out mixing and coagulation at the front end part of the water treatment system, reduces equipment expenses by having no electric motor and agitator, and reduces power consumption because it does not use any power unit.

公开(公告)号：US20220267177A1

公开(公告)日：2022-08-25

申请号：US17632862

申请日：2020-08-06

申请人： KEMIRA OYJ

发明人： Fazlollah AZARNOUSH ,  Roger BARSTROM

IPC分类号： C02F1/52

摘要： The present embodiments generally relate to compositions and methods for the treatment of fluids in need of treatment, such as, for example, industrial wastewaters. The compositions and methods for treating the fluids in need of treatment generally comprises the use of one or more stable ferrous products in amounts effective to treat said fluids.

公开(公告)号：US11407666B2

公开(公告)日：2022-08-09

申请号：US17396599

申请日：2021-08-06

申请人： Battelle Memorial Institute

发明人： Stephen H. Rosansky ,  Michael Miller ,  Patrick Norris ,  Darwin Argumedo ,  Douglas Hendry ,  Ian Haggerty ,  Keith Brown ,  Joshua James ,  Joseph Casciano ,  Slawomir Winecki ,  Vivek Lal ,  Tom McGuinness

IPC分类号： B01D61/02 ,  B01D61/08 ,  B01D61/10 ,  B04C5/04 ,  B04C5/20 ,  C02F1/02 ,  C02F1/38 ,  C02F1/44 ,  C02F1/72 ,  C02F9/00 ,  C04B35/12 ,  B04C5/081 ,  B04C5/085 ,  C04B35/622 ,  C02F1/52 ,  C02F101/36 ,  C02F103/06

摘要： Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water is concentrated in a reverse osmosis step and salt from the resulting solution is removed in supercritical conditions prior to destruction of PFAS in supercritical conditions.