公开(公告)号：US20210129408A1

公开(公告)日：2021-05-06

申请号：US16761315

申请日：2017-11-17

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Yanjun MAO ,  Shuo CHEN ,  Hongtao YU ,  Yaobin ZHANG

IPC: B29C48/08 ,  B29B7/00 ,  B29C48/92 ,  B29C48/00 ,  B29B13/04 ,  B29B13/02 ,  C02F3/10 ,  B29B9/04

Abstract: The invention, belonging to the field of biological treatment of pollutants and functional materials, presents a method for the preparation of biofilm carrier with biochar fixed by thermoplastic resin. Extrusion grade polyethylene/polypropylene particles are used as the basic material. One or some combination of plant biochar, straw biochar, rice husk biochar, shell biochar, excess sludge and animal waste biochar are used as the functional material. The biofilm carrier with biochar fixed by thermoplastic resin is prepared by the screw extrusion process, which is a simple, flexible and controllable method, and possesses strong adaptability. The reactor with these biofilm carriers has high removal efficiency of refractory organic pollutants.

公开(公告)号：US20190176094A1

公开(公告)日：2019-06-13

申请号：US16325168

申请日：2017-06-02

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Gaoliang WEI ,  Shuo CHEN ,  Hongtao YU

IPC: B01D67/00 ,  B01D71/02 ,  C01B32/184 ,  B01D69/12

Abstract: The invention, belonging to the field of membrane technology, presents a method for the direct growth of ultrathin porous graphene separation membranes. Etching agent, organic solvent and polymer are coated on metal foil, and then they are calcined at high temperature in absence of oxygen; after removal of metal substrate and reaction products, single-layered or multi-layered porous graphene membranes are obtained. Alternatively, the dispersion or solution of etching agent is coated on metal foil, on which a polymer film is then overlaid. The obtained sample is subsequently calcined at high temperature in absence of oxygen; after removal of metal substrate and reaction products, single-layered or multi-layered porous graphene membranes are obtained. The method involved in this invention is simple and highly efficient, and allows direct growth of ultrathin porous graphene separation membranes, without needing expensive apparatuses, chemicals and graphene raw material. Additionally, the graphene membranes prepared with this method have controlled pore size, ultrahigh water flux and strong resistance to irreversible fouling.

公开(公告)号：US20190144316A1

公开(公告)日：2019-05-16

申请号：US15777393

申请日：2016-10-25

Applicant: Dalian University of Technology

Inventor： Xie QUAN ,  Yanjun MAO ,  Wuzhe QUAN ,  Shuo CHEN ,  Hongtao YU

IPC: C02F3/10 ,  C01B32/198

Abstract: The invention, belonging to the field of biological treatment of pollutants and functional materials, presents a non-dissolved redox mediator biofilm carrier and its preparation method. The graphene oxide and/or carbonylation modified graphene oxide are used as the non-dissolved redox mediator, which is called as the functional material, and the extrusion grade polyethylene/polypropylene particles are used as the basic material. The non-dissolved redox mediator biofilm carrier is prepared by the screw extrusion process, which is a simple, flexible and controllable method, and possesses strong adaptability. The reactor with these biofilm carriers has high removal efficiency of refractory organic pollutants.

公开(公告)号：US20230191338A1

公开(公告)日：2023-06-22

申请号：US18083155

申请日：2022-12-16

Applicant: Dalian University of Technology

Inventor： Shuo CHEN ,  Chengyu YUAN ,  Qi ZHANG ,  Gaoliang WEI ,  Xie QUAN

IPC: B01D71/02 ,  B01D69/02 ,  B01D67/00 ,  C01B32/907 ,  C01B32/921

CPC classification number: B01D71/0221 ,  B01D69/02 ,  B01D67/00416 ,  B01D67/006 ,  B01D67/0058 ,  B01D67/0076 ,  C01B32/907 ,  B01D71/021 ,  C01B32/921 ,  B01D2325/36 ,  B01D2325/26 ,  B01D2325/28 ,  B01D2323/08 ,  B01D2323/12 ,  B01D2323/10 ,  B01D2323/21817 ,  B01D2323/21815 ,  B01D2323/28 ,  B01D2323/36 ,  B01D2323/56

Abstract: The present disclosure provides a rigid self-supporting MXene separation membrane and a preparation method and use thereof, belonging to the technical field of membranes. In the present disclosure, a MXene material is mixed with an aluminum salt powder to conduct one-step membrane formation by hot-pressing. The pressure forms the powder into a membrane and imparts rigidity, enabling a self-supporting structure; the heating breaks an ionic bond of an inorganic metal salt to reach a molten ionic state, and free metal cations react with active oxygen-containing functional groups on the surface of the MXene to form new chemical bonds (such as an Al—O bond); such a chemical bond has higher energy, achieving a desirable anti-swelling effect to improve the membrane stability. The separation membrane further has excellent conductivity and hydrophilicity.

公开(公告)号：US20200071214A1

公开(公告)日：2020-03-05

申请号：US16611151

申请日：2018-02-05

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Yanping SHI ,  Shuo CHEN ,  Yaobin ZHANG ,  Tao LIU

IPC: C02F3/28

Abstract: The present disclosure provides an electron donor biofilm carrier and preparation method thereof. The electron donor biofilm carrier is mainly used in anaerobic or anoxic suspended carrier biofilm technologies. Electron donors with a standard electrode potential below 100 My are used as the functional material for preparation of electron donorbiofilm carrier. The electron donor biofilm carrier may contribute to the enrichment of the biofilm functional bacteria and the improvement on treatment performance of the anaerobic or anoxic suspended carrier biofilm reactor.

公开(公告)号：US20250136481A1

公开(公告)日：2025-05-01

申请号：US18837156

申请日：2023-03-07

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Kaixuan WANG ,  Xin QIN ,  Peike CAO ,  Shuo CHEN ,  Hongtao YU

IPC: C02F1/461 ,  C02F1/467 ,  C02F101/34

Abstract: In an anode and cathode synergistic electrocatalytic system for wastewater treatment and an application, an electrode having a “dual function” is used as a cathode. The cathode and an anode are sequentially arranged in a crisscrossed and parallel mode and fixed into an electrode group. The electrode group is paced in a reaction tank which has an aeration device at the bottom thereof, separately connecting the cathode and the anode of the electrode group to a power supply. Electrocatalytic degradation is performed on wastewater. In the electrocatalytic degradation process, a synergistic electrocatalytic degradation effect of the anode and the cathode is achieved by the mutual coordination of heterogeneous electro-fenton of the cathode and oxidation of the anode. The cathode ad anode synergistic electrocatalytic process has a good wastewater treatment effect, high current efficiency, low energy consumption, and low operation and maintenance costs.

公开(公告)号：US20220241733A1

公开(公告)日：2022-08-04

申请号：US17623816

申请日：2019-07-05

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Lei DU ,  Shuo CHEN

IPC: B01D71/02 ,  B01D69/12 ,  B01D69/06 ,  B01D69/08 ,  B01D69/04 ,  B01D67/00

Abstract: The present invention belongs to the technical field of membranes and provides a carbon nanotube/nanofiber conductive composite membrane and a preparation method thereof. The conductive membrane with a meshy pore structure intertwined by one-dimensional nano materials is constructed by taking one-dimensional nanofiber nonwovens prepared by electrospinning as a support layer and CNTs cross linked on the support layer as a separation layer. The membrane pore size of the composite membrane involved can be controlled from microfiltration to ultrafiltration, and membrane morphology includes flat membranes, hollow fiber membranes, and spiral-wound membranes. The main advantages and beneficial effects of the composite membrane involved are: simple preparation steps, better permeability and mechanical strength, good hydrophilicity and electrical conductivity, and easy mass production and application.

公开(公告)号：US20210008503A1

公开(公告)日：2021-01-14

申请号：US16644050

申请日：2018-12-18

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Haiguang ZHANG ,  Shuo CHEN ,  Hongtao YU

IPC: B01D67/00 ,  B01D71/02 ,  B01D69/12 ,  B01D69/02 ,  B01D69/14 ,  C01B32/166 ,  C01B32/159

Abstract: A method for preparation of conductive polymer/carbon nanotube (CNT) composite nanofiltration (NF) membrane and the use thereof. This conductive polymer/CNT composite NF membrane is obtained by polymerizing conductive polymer into a CNT membrane and then in-situ cross-linking with glutaraldehyde under acidic condition. The synthetic method for the conductive polymer/CNT composite NF membrane is simple and has no need of expensive equipment. The prepared membrane has controllable membrane structure and possesses superior electrical conductivity and electrochemical stability. The membrane can couple with electrochemistry for electrically assisted filtration. With the electrical assistance, the membrane can achieve improved ion rejection performance while retaining high permeability by enhancement of membrane surface charge density, which alleviates the permeability-selectivity trade-off. Furthermore, the electrically assisted NF membrane filtration can also enhance the removal for small molecular organic pollutants.

公开(公告)号：US20200156975A1

公开(公告)日：2020-05-21

申请号：US16621226

申请日：2018-03-08

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Yanjun MAO ,  Yaobin ZHANG ,  Shuo CHEN

IPC: C02F3/30 ,  C02F3/10 ,  C02F3/20 ,  C02F101/10

Abstract: A method of upgrading the activated sludge process based on functional suspended carriers in the wastewater biological treatment process. The reaction zone of the original activated sludge process is divided into an aerobic zone, anoxic zone, first aerobic zone and second aerobic zone without increasing the footprint and extending the original process. A certain amount of functional suspended carriers is added in each reactor according to the treatment requirements, and influent diversion is used, in order to improve the pollutant removal performance of the modification process. Furthermore, the effluent quality can meet the requirements of discharge standards. This method is especially suitable for the upgrading of built wastewater treatment plants.

公开(公告)号：US20170014777A1

公开(公告)日：2017-01-19

申请号：US15120637

申请日：2014-04-28

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie QUAN ,  Gaoliang WEI ,  Shuo CHEN ,  Hongtao YU

IPC: B01D67/00 ,  B01D69/14 ,  B01D71/66 ,  B01D71/44 ,  B01D71/42 ,  B01D71/32 ,  B01D69/08 ,  B01D71/02

CPC classification number: B01D67/0079 ,  B01D67/0011 ,  B01D67/0067 ,  B01D69/02 ,  B01D69/08 ,  B01D69/085 ,  B01D69/148 ,  B01D71/021 ,  B01D71/32 ,  B01D71/38 ,  B01D71/42 ,  B01D71/44 ,  B01D71/66 ,  B01D2325/26 ,  B82B3/0009

Abstract: The invention, belonging to the field of membrane technology, presents a method for the high-throughput preparation of carbon nanotube hollow fiber membranes. This method contains three major steps. Firstly, the pristine carbon nanotubes (CNTs) are added into a mixture of concentrated nitric acid and sulfuric acid, which is then heated at 40˜80° C. for 0.5˜6 hours. Secondly, the surface-functionalized CNTs and polyvinyl butyral (PVB) are dispersed and dissolved, respectively, in organic solvents at a mass ratio of 1:0.2˜1:4˜8 to form homogeneous spinning solution, which is squeezed into water as shell liquid with water as core liquid at a flow rate ratios of 0.5˜5:1 through a spinneret to form CNT/PVB hollow fibers. Finally, the dry fibers are calcinated at 600˜1000 ° C. for 1˜4 hours in absence of oxygen to produce free-standing CNT hollow fiber membranes. The method involved in this invention is simple and highly efficient without needing any templates, expensive apparatuses and chemicals. Additionally, the obtained electrically conductive CNT hollow fiber membranes feature a high porosity, high water flux and strong acid/alkali resistance.

Abstract translation: 属于膜技术领域的本发明提出了一种高通量制备碳纳米管中空纤维膜的方法。 此方法包含三个主要步骤。 首先，将原始碳纳米管（CNT）加入到浓硝酸和硫酸的混合物中，然后在40〜80℃下加热0.5〜6小时。 其次，将表面官能化的CNT和聚乙烯醇缩丁醛（PVB）分别溶解在有机溶剂中，质量比为1:0.2〜1:4〜8，形成均匀的纺丝溶液，将其挤入水中作为壳 液体以水为核心液体，流速比为0.5〜5:1，通过喷丝头形成CNT / PVB中空纤维。 最后，将干纤维在600〜1000℃下煅烧1〜4小时而不存在氧气，制成独立的CNT中空纤维膜。 本发明涉及的方法简单而高效，而不需要任何模板，昂贵的设备和化学品。 另外，得到的导电性CNT中空纤维膜的孔隙率高，水通量高，耐酸碱性强。