公开(公告)号：US12017937B2

公开(公告)日：2024-06-25

申请号：US17275234

申请日：2018-12-05

申请人： Shanghai Huachang Environmental Protection Co., Ltd ,  Sichuan University ,  EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Jiwei Wu ,  Hualin Wang ,  Jiake Pan ,  Xia Jiang ,  Lixiang Wang ,  Yuan Huang ,  Jianping Li ,  Pengbo Fu ,  Wenjie Lv

IPC分类号： C02F11/127 ,  C02F11/13 ,  E21B21/06

CPC分类号： C02F11/127 ,  E21B21/063 ,  C02F11/13

摘要： Disclosed is a rotational flow rotation deoiling method for oil-based mud rock debris. The method comprises the following steps: (1) System viscosity control, wherein by means of heat exchange between a gas medium and the rock debris, the viscosity of the oil-based mud debris is reduced to reduce the interaction force between oil, water, and the surface and channels of solid particles, thereby facilitating the separation in a rotational flow field; (2) Rotational flow rotation deoiling, wherein the oil-based mud rock debris particles undergo a coupled motion of rotation and revolution, wherein by means of the rotation of the rock debris particles, the centrifugal desorption of oil on the surface of a solid phase, oil in capillaries and oil in pores is enhanced; and by means of the centrifugal force of periodic oscillation generated by the revolution thereof, the separation and enrichment of oil and gas and the solid phase are completed, thereby achieving the removal of the oil phase from the pore channels of the rock debris; and (3) gas-liquid separation and reuse, wherein an oil-containing mixture produced in step (2) is subjected to gas-liquid separation so as to realize the reuse of a base oil, circulation of the gas medium, and a harmless treatment of the rock debris; and a rotational flow rotation deoiling device for oil-based mud rock debris is further comprised.

公开(公告)号：US11760665B2

公开(公告)日：2023-09-19

申请号：US15782585

申请日：2017-10-12

申请人： RKM IP Holding LLC

发明人： Roger Kendall McGowan

IPC分类号： C02F1/56 ,  C02F1/24 ,  C02F11/127 ,  C02F11/147 ,  C02F1/52 ,  C02F1/38 ,  C02F103/22 ,  C08F226/04

CPC分类号： C02F1/56 ,  C02F1/24 ,  C02F1/5227 ,  C02F11/127 ,  C02F11/147 ,  C02F1/385 ,  C02F1/5272 ,  C02F2103/22 ,  C08F226/04

摘要： A coagulant-flocculant mixture, a method of making such a coagulant-flocculant mixture, and a method of using such a coagulant-flocculant mixture for treating effluent containing particles within an aqueous medium to facilitate separating the particles and the aqueous medium, whereby the coagulant-flocculant mixture includes an amount of coagulant combined with an amount of flocculant.

公开(公告)号：US20230008207A1

公开(公告)日：2023-01-12

申请号：US17861322

申请日：2022-07-11

申请人： TONGJI UNIVERSITY

发明人： Yongmei Li ,  Zhipeng Zhang ,  Qian Ping ,  Wenjie Guo ,  Lin Wang

IPC分类号： C02F11/04 ,  C01B25/00 ,  C02F11/143 ,  C02F11/122 ,  C02F11/127

摘要： Disclosed is a method for recovering phosphorus from sludge rich in chemical phosphorus precipitates using a high-protein biomass waste, comprising introducing the sludge rich in chemical phosphorus precipitates into an anaerobic fermenter, adding a certain amount of a high-protein biomass by-product, sealing the fermenter and fermenting for 4-7 days. The method can effectively increase the phosphorus release efficiency from the sludge, and also generate volatile short-chain fatty acids and ammonia nitrogen in high concentrations. After dewatering, phosphorus and part of ammonia nitrogen can be recovered in a form of high-purity struvite crystals only by addition of a magnesium salt and adjustment of pH to 7.5-9.0. The volatile short-chain fatty acids can be used as an economical carbon source. The method allows simultaneous utilization of two solid wastes to recover carbon, nitrogen and phosphorus resources, and can reduce the usage of chemical reagents, saving the treatment cost.

公开(公告)号：US11548803B2

公开(公告)日：2023-01-10

申请号：US17239699

申请日：2021-04-26

申请人： TONGJI UNIVERSITY

发明人： Bin Dong ,  Sisi Chen ,  Jun Gao ,  Danni Shen

IPC分类号： C02F11/04 ,  C02F11/00 ,  C02F11/12 ,  C02F11/127 ,  C02F101/30

摘要： The present invention relates to a method for enhancing deep degradation of proteins in sludge. The method includes the following steps: an anaerobic digestion product of excess sludge as a substrate is treated by Van Soest's washing method to obtain the sludge free of easily degradable organics and containing degradation-resistant proteins; then, with the anaerobic digestion product of excess sludge as an inoculum and the sludge free of easily degradable organics and containing degradation-resistant proteins as a substrate, a first-stage microbial electrolytic cell coupled anaerobic digestion system is started for treatment to obtain a microbial mixture related to targeted degradation of the degradation-resistant proteins; with the microbial mixture related to targeted degradation of the degradation-resistant proteins as an inoculum and the anaerobic digestion product of excess sludge as a substrate, a second-stage microbial electrolytic cell coupled anaerobic digestion system is started to obtain the sludge with deeply degraded proteins.

公开(公告)号：US11498884B2

公开(公告)日：2022-11-15

申请号：US16639928

申请日：2018-08-17

申请人： Besser Tech Holdings LLC

发明人： William Michael Fields ,  Yuanchun Xu ,  Guichun Zhang

IPC分类号： C02F1/24 ,  C02F1/40 ,  C02F1/52 ,  C02F11/127 ,  C05F1/00 ,  A23K20/158 ,  A23K10/26 ,  C02F101/32 ,  C02F103/22 ,  C02F103/32

摘要： A system for recovering fat, oil and grease (FOG) from wastewater has multiple annular flotation zones in a concentric configuration surrounding a central column to create progressively increasing surface areas for FOG and solid particles flotation. Each flotation zone may be equipped with an independent pressurized micro air and/or ozone bubbles distribution system. The FOG is recovered in the first flotation zone without chemical additions. Coagulant and flocculant may be added in the second flotation zone to maximize removals of biochemical oxygen demand (BOD), total suspended solids (TSS), and colloidal particulates and produce clear effluent. Magnesium chloride is added in the third flotation zone to remove phosphorus and to form struvite particulates that can be used as fertilizer. Since both organic loading and solid loading in the treated effluent are significantly reduced, poultry processing plants can more easily meet wastewater treatment plant discharge limits and avoid surcharges.

公开(公告)号：US20220220020A1

公开(公告)日：2022-07-14

申请号：US17606565

申请日：2020-04-16

申请人： KAM Analysen- und Messtechnik GmbH

发明人： Michael Kocher ,  Mohammad Reza Vali ,  Werner Krüger ,  Matthias Albers

IPC分类号： C02F11/147 ,  C02F11/127 ,  C02F1/00

摘要： Methods for flocculating solid particles in a provided suspension including specifying a target charge density of the suspension at which the solid particles flocculate; providing a flocculant having a charge density; determining, at a plurality of measuring times, the suspension charge density present in the suspension in the course of a titrimetric analysis, measuring the flow potential; determining, at respective of the measuring times, a quantity of the flocculant needing to be added to ensure optimal flocculation based on the target charge density, the flocculant charge density, and the suspension charge density present at the respective measuring time; and subsequently adding the determined quantity of flocculant into the suspension; and systems therefor. The methods and systems can provide the actual demand of flocculant needed for efficient flocculation in a continuous flocculation method of a suspension.

公开(公告)号：US11339071B2

公开(公告)日：2022-05-24

申请号：US16403127

申请日：2019-05-03

申请人： RDP TECHNOLOGIES, INC.

发明人： Richard W. Christy

IPC分类号： C02F9/00 ,  C02F11/02 ,  C02F11/127 ,  C02F3/12 ,  C02F11/145 ,  C02F11/18

摘要： An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.

公开(公告)号：US11306015B2

公开(公告)日：2022-04-19

申请号：US16815052

申请日：2020-03-11

申请人： Heritage Research Group

发明人： Perry Eyster ,  Bynum Henson ,  Christopher D. Weber

IPC分类号： C02F11/143 ,  B01D21/26 ,  C02F1/02 ,  C02F1/38 ,  C02F1/52 ,  C02F11/145 ,  C02F11/148 ,  B03D1/08 ,  C02F11/127 ,  C02F103/36 ,  B03D3/02 ,  B03D3/06

摘要： A method of separating sludge which involves adding an insoluble mineral colloidal suspension into an industrial sludge to destabilize the industrial sludge and separating destabilized components of the industrial sludge. The insoluble mineral colloidal suspension includes magnesium hydroxide. In an alternative embodiment dry finely divided magnesium hydroxide can be added and then dispersed into an industrial sludge. Conventional flocculants and/or coagulants can also be added. Conventional physical separation processes can be used to separate the destabilized industrial sludge.

公开(公告)号：US20220081332A1

公开(公告)日：2022-03-17

申请号：US17419903

申请日：2020-01-25

申请人： Dow Global Technologies LLC

发明人： Lizbeth Rostro ,  Wu Chen ,  Paul A. Gillis ,  Michael K. Poindexter

IPC分类号： C02F1/56 ,  C02F11/127 ,  C02F11/147 ,  B01F23/53 ,  B01F27/115 ,  B01F35/71

摘要： Embodiments relate continuous process for treating tailings that includes providing tailings for treatment having at least 20 wt % solids, providing a mixing apparatus having a first inlet for feeding the tailings, a second inlet for feeding flocculants, an outlet for a mixture of the tailings and flocculants, and a rotating disk, the first inlet being separate from the second inlet, the second inlet being above the rotating disk, and the rotating disk having a tip speed at least 2 m/s, continuously introducing into the mixing apparatus the tailings through the first inlet and the flocculants through the second inlet, allowing the tailings and the flocculants to mix on the rotating disk to form the mixture of the tailings and flocculants, continuously removing the mixture of the tailings and flocculants through the outlet to form a treated mixture, and flowing the treated mixture from the mixing apparatus for further treatment or to a disposal area.

公开(公告)号：US11180391B2

公开(公告)日：2021-11-23

申请号：US15085412

申请日：2016-03-30

申请人： ANAERGIA B.V.

发明人： Willem Jan Oude Grotebevelsborg

IPC分类号： C02F3/00 ,  C02F11/00 ,  C02F3/28 ,  C02F11/04 ,  C02F11/127 ,  C02F11/125

摘要： Organic waste is polished to remove floatable contaminants prior to being biologically treated. In one application, pressed organic waste is polished before being sent to a wet anaerobic digester, optionally to be co-digested with wastewater treatment plant sludge. The organic waste is polished by flinging globs of the organic waste against a screen while flowing air across the flinging globs. The polishing can be performed in a device having a rotor with discrete paddles inside of a cylindrical screen.