公开(公告)号：US12122701B2

公开(公告)日：2024-10-22

申请号：US17912224

申请日：2021-03-16

Applicant: Velocys Technologies Limited

Inventor： Graham Lea

IPC: C01B3/48 ,  B09B3/40 ,  C02F1/00 ,  C02F1/20 ,  C02F1/24 ,  C02F1/28 ,  C02F1/44 ,  C02F1/48 ,  C02F1/52 ,  C02F1/56 ,  C02F1/66 ,  C02F1/72 ,  C02F3/12 ,  C02F9/00 ,  C02F101/10 ,  C02F101/16 ,  C02F101/20 ,  C02F101/32 ,  C02F103/36 ,  C07C1/04

CPC classification number: C02F9/00 ,  B09B3/40 ,  C01B3/48 ,  C07C1/0485 ,  C01B2203/0255 ,  C01B2203/0283 ,  C01B2203/062 ,  C02F1/004 ,  C02F2001/007 ,  C02F1/20 ,  C02F1/24 ,  C02F1/283 ,  C02F1/44 ,  C02F1/48 ,  C02F1/5236 ,  C02F1/5245 ,  C02F1/56 ,  C02F1/66 ,  C02F1/725 ,  C02F3/1268 ,  C02F2101/101 ,  C02F2101/103 ,  C02F2101/16 ,  C02F2101/166 ,  C02F2101/20 ,  C02F2101/322 ,  C02F2103/36 ,  C02F2103/365 ,  C02F2303/18

Abstract: In a process for treating wastewater from a combined gasification and Fischer-Tropsch (F-T) process, feedstock derived from Municipal Solid Waste or the like is gasified in a reactor (R) and treated in a cleanup unit (C) which generates a first wastewater stream (1st WWT STREAM) containing salts and inorganic pollutants. The first wastewater stream is treated in a treatment unit (T1) to remove inorganic pollutants derived from the syngas. The treatment comprises a) degassing, and subsequently b) neutralising the first wastewater stream before treatment in a Dissolved Air Flotation unit (72c) and filtering in a moving sand bed or similar (72d) to remove solids, and a stripping process to remove ammonia. A second wastewater stream (2nd WWT Stream) containing organic pollutants but being low in salts arises from the F-T process and is treated separately to allow recycling within the F-T process.

公开(公告)号：US12110245B2

公开(公告)日：2024-10-08

申请号：US16191688

申请日：2018-11-15

Applicant: Eau Midstream, Inc.

Inventor： Francis C. Miller ,  Steven B. Addleman

IPC: C02F9/00 ,  C02F1/00 ,  C02F1/28 ,  C02F1/44 ,  C02F1/463 ,  C02F1/52 ,  C02F1/56 ,  C02F1/66 ,  C02F1/72 ,  C02F1/78 ,  C02F5/02 ,  C02F5/06 ,  C02F11/121 ,  C02F101/10 ,  C02F103/10 ,  C02F103/36

CPC classification number: C02F9/00 ,  C02F1/441 ,  C02F1/463 ,  C02F1/66 ,  C02F1/78 ,  C02F1/004 ,  C02F1/283 ,  C02F1/52 ,  C02F1/5236 ,  C02F1/56 ,  C02F1/72 ,  C02F1/722 ,  C02F5/02 ,  C02F5/06 ,  C02F11/121 ,  C02F2101/108 ,  C02F2103/10 ,  C02F2103/365 ,  C02F2209/00 ,  C02F2209/03 ,  C02F2209/05 ,  C02F2209/055 ,  C02F2209/11

Abstract: A method for treating wastewater is disclosed. The method is useful in particular for treating wastewater that is generated from the process of drilling, hydraulic fracturing and/or cleaning a bore of an oil or natural gas well bore. The method may include performing cold lime softening of the wastewater to form waste salt flocs, filtration of waste salt flocs, ozonation of the filtrate from the filtration, and reverse osmosis of the filtrate to produce a purified permeate.

公开(公告)号：US12098085B2

公开(公告)日：2024-09-24

申请号：US17630889

申请日：2020-08-27

Applicant: INDORAMA VENTURES OXIDES AUSTRALIA PTY LIMITED

Inventor： Ken Deutscher ,  Sasha Boskovic ,  Andrew Coveney ,  Jason Hong ,  Salvatore Lazzaro ,  Kate Tildesley

IPC: C02F1/60 ,  C02F1/56 ,  C08L71/02 ,  C22B3/20 ,  C22B3/44

CPC classification number: C02F1/60 ,  C02F1/56 ,  C08L71/02 ,  C22B3/20 ,  C22B3/44

Abstract: The present disclosure relates to the field of chemical compounds, compositions and processes. More specifically, the present disclosure relates to compositions having a high-loading capacity in an aqueous medium and to compositions, processes and uses thereof as silica coagulants in hydrometallurgical process streams.

公开(公告)号：US12017941B2

公开(公告)日：2024-06-25

申请号：US18132361

申请日：2023-04-07

Applicant: Dana K Ripley

Inventor： Dana K Ripley

IPC: C02F9/00 ,  C02F1/00 ,  C02F1/32 ,  C02F1/44 ,  C02F1/56 ,  C02F3/04 ,  C02F3/30

CPC classification number: C02F9/00 ,  C02F1/001 ,  C02F1/32 ,  C02F1/441 ,  C02F1/56 ,  C02F3/04 ,  C02F3/305 ,  C02F2301/046 ,  C02F2303/04

Abstract: A decentralized wastewater reuse design utilizing trickling filter (TF)-based aerobic bioreactors responds to the growing need for efficient energy usage per gallon of wastewater treated and/or pound of biological oxygen demand (BOD) removed from processed influent. A facility based on this design is able to adjust power consumption as needed due to external factors, such as utility rate scheduling, grid availability, and/or renewable power sources, without compromising effluent quality performance or increasing energy intensity. The facility improves on past TF applications by overcoming physical hydraulic constraints and expanding the capacity for both aerobic nitrification and anaerobic denitrification throughout the system. This design reduces grid dependency and overall power utilization per gallon of wastewater treated and/or per pound of BOD removal in alignment with climate-oriented policies that are expected to further exert pressure on states and municipalities to shift to carbon-free energy sources supplying all of their water/wastewater facility operations.

公开(公告)号：US11945744B2

公开(公告)日：2024-04-02

申请号：US18134906

申请日：2023-04-14

Applicant: Samsung Engineering Co., Ltd. ,  Samsung Electronics Co., Ltd.

Inventor： Seok Hwan Hong ,  Dae Soo Park ,  Seung Joon Chung ,  Yong Xun Jin ,  Jae Hyung Park ,  Jae Hoon Choi ,  Jae Dong Hwang ,  Jong Keun Yi ,  Su Hyoung Cho ,  Kyu Won Hwang ,  June Yurl Hur ,  Je Hun Kim ,  Ji Won Chun

IPC: C02F9/00 ,  B01D61/02 ,  B01D61/14 ,  B01D61/58 ,  B01D65/02 ,  C02F1/52 ,  C02F1/56 ,  C02F1/66 ,  C02F1/00 ,  C02F1/20 ,  C02F1/44 ,  C02F1/50 ,  C02F3/12 ,  C02F3/30 ,  C02F3/34 ,  C02F5/08 ,  C02F101/14 ,  C02F101/16 ,  C02F101/30 ,  C02F103/08

CPC classification number: C02F9/00 ,  B01D61/025 ,  B01D61/145 ,  B01D61/147 ,  B01D61/58 ,  B01D65/02 ,  C02F1/5236 ,  C02F1/56 ,  C02F1/66 ,  B01D2317/025 ,  C02F2001/007 ,  C02F1/20 ,  C02F1/441 ,  C02F1/444 ,  C02F1/50 ,  C02F3/1268 ,  C02F3/30 ,  C02F3/342 ,  C02F5/08 ,  C02F2101/14 ,  C02F2101/16 ,  C02F2101/30 ,  C02F2103/08 ,  C02F2301/046 ,  C02F2303/04 ,  C02F2303/16

Abstract: Disclosed are a method and apparatus for reusing wastewater. The method for reusing wastewater disclosed herein includes: generating a mixed wastewater by mixing multiple types of wastewater (S20); performing a first purification by passing the mixed wastewater through a flocculation-sedimentation unit (S40); performing a second purification by passing an effluent of the flocculation-sedimentation unit through a membrane bioreactor (MBR) (S60); performing a third purification by passing an effluent of the MBR through a reverse-osmosis membrane unit (S80); and reusing an effluent of the reverse-osmosis membrane unit as cooling water or industrial water (S100).

公开(公告)号：US11912593B2

公开(公告)日：2024-02-27

申请号：US18124535

申请日：2023-03-21

Applicant: EnviCore Inc.

Inventor： Milana Trifkovic ,  Shahrukh Shamim ,  Aleksandra Govedarica ,  Mahmoud Ansari

IPC: C02F1/52 ,  C02F1/56 ,  C02F101/32 ,  C02F11/143 ,  C02F11/148 ,  C02F1/26 ,  C02F101/10 ,  C02F103/10

CPC classification number: C02F1/5245 ,  C02F1/26 ,  C02F1/56 ,  C02F11/143 ,  C02F11/148 ,  C02F2001/5218 ,  C02F2101/10 ,  C02F2101/32 ,  C02F2103/10

Abstract: Methods are provided for treating intimately dispersed mixtures of water, bitumen, and fine clay particles, such as oil sands mature fine tailings (MFT). Select methods use dissolved silicate ions and a base (alkali), optionally in combination with a biopolymer, to flocculate a slurry. A mixing regime is disclosed involving the addition to MFT of silicate ions in solution and alkali, to initiate aggregation/destabilization of clay particles. Methods are exemplified that provide distinct sediment layers in conjunction with the release of residual bitumen (for example 40-50% of the initial bitumen content). In these exemplified embodiments, a densely packed bottom layer containing ˜75 wt. % solids showed high yield stress values (3.5-5.5 kPa) and entrapped little residual bitumen (0.2-0.3 wt. %). The methods accordingly segregate a material suitable for reclamation.

公开(公告)号：US11884563B1

公开(公告)日：2024-01-30

申请号：US17690049

申请日：2022-03-09

Applicant: Qinglin Wu ,  Pawan Kumar Mishra

Inventor： Qinglin Wu ,  Pawan Kumar Mishra

IPC: C02F1/56 ,  B01J20/24 ,  C02F1/52 ,  C02F1/68 ,  B01J20/28 ,  C02F101/32 ,  C02F103/00 ,  C02F103/08 ,  E02B15/04

CPC classification number: C02F1/56 ,  B01J20/24 ,  C02F1/5227 ,  C02F1/681 ,  B01J20/28023 ,  B01J2220/4831 ,  C02F2101/32 ,  C02F2103/007 ,  C02F2103/08 ,  C02F2305/14 ,  E02B15/04 ,  Y02W30/62

Abstract: A composition and method are disclosed for forming lignin-containing floccules from dissolved lignin, lignin nanoparticles, lignin colloids, or lignin-containing cellulose nanofibers. The floccules may be used to clean oil-contaminated materials such as oil-contaminated plastics or oil-contaminated water. The polymers and oil may then be recovered for further use, without requiring organic solvents.

公开(公告)号：US20240025778A1

公开(公告)日：2024-01-25

申请号：US18339892

申请日：2023-06-22

Applicant: Graymont Western Canada Inc.

Inventor： Nikolas Andrei Romaniuk ,  Jared Ira Leikam ,  Jesse Wayne Fox ,  Michael John Tate ,  Narain Hariharan

IPC: C02F1/56 ,  C02F1/52 ,  C02F11/12 ,  C02F11/145 ,  C10G1/04 ,  B01D21/30 ,  F26B5/00

CPC classification number: C02F1/56 ,  C02F1/5245 ,  C02F11/12 ,  C02F11/145 ,  C10G1/045 ,  B01D21/30 ,  F26B5/005 ,  C02F2201/002 ,  C02F1/5281 ,  C02F2103/10

Abstract: Methods and systems for treating tailings at an elevated pH using lime are disclosed herein. In some embodiments, the method comprises (i) providing a tailings stream comprising bicarbonates and a pH less than 9.0, (ii) adding a coagulant comprising calcium hydroxide to the tailings stream to form a mixture having a pH of at least 11.5 and a soluble calcium level no more than 800 mg/L, and (iii) dewatering the mixture to produce a product having a solids content of at least 40% by weight. In some embodiments, the pH and soluble calcium level of the mixture cause chemical modification of clay materials of the mixture via pozzolanic reactions. In some embodiments, the undrained shear strength of the product increases over a period of time of at least two days.

公开(公告)号：US11866348B2

公开(公告)日：2024-01-09

申请号：US16680197

申请日：2019-11-11

Applicant: Denny Allen Criswell

Inventor： Denny Allen Criswell

IPC: C02F1/24 ,  C02F1/52 ,  B01D21/01 ,  B01D21/32 ,  B03D1/14 ,  C02F1/00 ,  C02F1/56 ,  B03D1/02 ,  C02F1/66

CPC classification number: C02F1/24 ,  B01D21/01 ,  B01D21/32 ,  B03D1/1431 ,  C02F1/008 ,  C02F1/5209 ,  B03D1/028 ,  C02F1/5245 ,  C02F1/56 ,  C02F1/66 ,  C02F2209/003 ,  C02F2209/005 ,  C02F2209/006 ,  C02F2209/06 ,  C02F2209/10 ,  C02F2209/11 ,  C02F2209/40

Abstract: Introduced here are systems for treating a wastewater stream to produce an effluent stream. A treatment system can include a sensor for measuring a characteristic of the wastewater stream and/or the effluent stream, a pump for supplying a chemical additive to the wastewater stream, and a controller for varying the flow rate of the chemical additive based on real-time analysis of measurements generated by the sensor. The characteristic could be, for example, turbidity, pH, total suspended solids (TSS), etc. Some embodiments of the treatment system further include a flow meter for measuring flow of the wastewater stream. In such embodiments, the controller may vary the flow rate of the chemical additive based on the measurements generated by the sensor and the flow meter.

公开(公告)号：US11840471B1

公开(公告)日：2023-12-12

申请号：US17555794

申请日：2021-12-20

Applicant: Republic Services, Inc.

Inventor： Pavan Puttamraju ,  Kevin D. Torrens ,  Yun Yu

IPC: C02F9/00 ,  C02F1/24 ,  C02F1/56 ,  C02F1/66 ,  C02F1/74 ,  B03D1/016 ,  E21B21/06 ,  C02F1/78 ,  C02F101/36 ,  C02F103/06 ,  C02F103/10 ,  E21B43/40

CPC classification number: C02F9/00 ,  B03D1/016 ,  C02F1/24 ,  C02F1/56 ,  C02F1/66 ,  C02F1/74 ,  E21B21/063 ,  C02F1/78 ,  C02F2101/36 ,  C02F2103/06 ,  C02F2103/10 ,  E21B43/40

Abstract: Disclosed is a method for enhancing the removal of a per- and polyfluoroalkyl substances (PFAS) component from waste water using a cationic polymer (e.g., a cationic polymer flocculant or coagulant). The cationic polymer enables gas that is diffused through the waste water to carry at least a portion of the PFAS component to the surface of water, creating a foam that can then be removed.