公开(公告)号：US12122698B2

公开(公告)日：2024-10-22

申请号：US17284568

申请日：2019-10-18

申请人： BL TECHNOLOGIES, INC.

发明人： Pierre Lucien Cote

IPC分类号： C02F3/30 ,  B01D63/02 ,  B01D65/00 ,  C02F3/10 ,  C02F3/12 ,  C02F3/20 ,  C02F3/28 ,  C02F101/16

CPC分类号： C02F3/307 ,  B01D63/02 ,  C02F3/1273 ,  C02F3/201 ,  C02F3/208 ,  B01D65/00 ,  B01D2313/26 ,  B01D2315/16 ,  C02F3/102 ,  C02F3/103 ,  C02F3/2806 ,  C02F3/301 ,  C02F2101/16 ,  C02F2303/20 ,  Y02W10/10

摘要： This specification describes a membrane aerated biofilm media and reactor (MABR) having a discontinuous layer of a porous material applied to the outer surface of a gas-transfer membrane. The porous material may have a void fraction of 50% or more. The porous material may have a thickness of up to about 500 microns and a pattern on the same order of magnitude as its thickness. The media may be used to carry on a deammonification reaction. In use, ammonia oxidizing bacteria (AOB) and annamox bacteria grown in or on the media, with the annamox bacteria located primarily in the porous material. The supply of oxygen through the gas-transfer membrane is limited to suppress the growth of nitrite oxidizing bacteria (NOB). Excess biofilm is removed, for example by coarse bubble scouring. The media may be placed in an anoxic zone of an activated sludge plant, which may be upstream of an aerobic zone.

公开(公告)号：US12116299B2

公开(公告)日：2024-10-15

申请号：US17565957

申请日：2021-12-30

申请人： BKT CO., LTD.

发明人： Dae Hwan Rhu ,  Young Hyun Park ,  Min Ki Jung ,  Jonathan Liberzon

IPC分类号： C02F3/30 ,  C02F101/10 ,  C02F101/16

CPC分类号： C02F3/308 ,  C02F3/307 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2301/046 ,  C02F2301/08

摘要： Disclosed is a method for removing nitrogen and phosphorus from sewage and wastewater through the improvement of a process configuration and a method for determining internal flows in an existing biological nitrogen and phosphorus removal process in combination with a deammonification process. According to an embodiment of the present invention, provided is a nitrogen and phosphorus removal apparatus in which, to form conditions in an anaerobic ammonium oxidation tank to perform a deammonification reaction, the influent flow rate into the nitrogen and phosphorus removal apparatus, the flow rate of water returned between reaction tanks, and the amount of returned sludge are controlled.

公开(公告)号：US20240109798A1

公开(公告)日：2024-04-04

申请号：US17768668

申请日：2021-07-21

申请人： Beijing University of Technology

发明人： Yongzhen PENG ,  Jingang QIU ,  Qiong ZHANG ,  Zhong WANG ,  Hao JIANG ,  Shang REN

IPC分类号： C02F3/30

CPC分类号： C02F3/307 ,  C02F3/303 ,  C02F3/305 ,  C02F2101/163 ,  C02F2209/02 ,  C02F2209/04 ,  C02F2209/06 ,  C02F2209/38

摘要： Disclosed are a method and device for realizing advanced nitrogen removal of mature landfill leachate and sludge reduction by using sludge fermentation products as carbon source, belonging to the field of biological treatment of sludge of high ammonia nitrogen wastewater. The mature landfill leachate first enters a PNA-SBR, the reactor operates in an anoxic/anaerobic/oxic (A/A/O) mode, denitrification is performed at an anoxic state; then anaerobic ammonia oxidation is performed at an anaerobic stage to remove part of ammonia nitrogen and nitrite nitrogen; partial nitrification is performed at an oxic stage to remove the ammonia nitrogen; discharged water is pumped into a DN-SBR, meanwhile, an excess sludge fermentation mixture is added, the reactor operates in an anoxic/anaerobic/oxic (A/A/O) mode, organic matters in the sludge fermentation mixture are used for denitrification at an anoxic stage, and meanwhile, microorganisms store an inner carbon source; ammonia nitrogen brought by the fermentation mixture is removed at an anaerobic stage; and denitrification is performed through the inner carbon source at an oxic stage. The remarkable sludge reduction effect is achieved while a removal rate of TN achieves 96.0%, and the method and the device are suitable for advanced removal of the high ammonia nitrogen wastewater.

公开(公告)号：US11795086B2

公开(公告)日：2023-10-24

申请号：US17530450

申请日：2021-11-18

申请人： BEIJING JIAOTONG UNIVERSITY

发明人： Hong Yao ,  Lu Lu ,  Sheng Tian

IPC分类号： C02F9/00 ,  B01D53/32 ,  B01D53/62 ,  B01D53/85 ,  C02F3/00 ,  C02F3/28 ,  C02F3/30

CPC分类号： C02F9/00 ,  B01D53/326 ,  B01D53/62 ,  B01D53/85 ,  B01D2255/806 ,  B01D2257/504 ,  B01D2258/0283 ,  C02F3/005 ,  C02F3/284 ,  C02F3/2846 ,  C02F3/307 ,  C02F2203/006 ,  C02F2209/14

摘要： A combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen, including a water feeding pump, a carbon capture device, an intermediate water tank, and an anaerobic ammonium oxidation reactor connected in sequence through pipelines, where the carbon capture device includes an anode chamber and a cathode chamber; an anode plate is arranged in the anode chamber; a cathode plate is arranged in the cathode chamber; a gas inlet pipe is further arranged at the cathode chamber; an air compressor is connected with the gas inlet pipe; a gas outlet pipe is arranged at a top of the carbon capture device; a water outlet in the intermediate water tank is fluidly communicated with a bottom end of the anaerobic ammonium oxidation reactor through a second water inlet pipe; the gas outlet pipe is fluidly communicated with the second water inlet pipe.

公开(公告)号：US20180029909A1

公开(公告)日：2018-02-01

申请号：US15707380

申请日：2017-09-18

申请人： The Trustees of Princeton University

发明人： Peter R. Jaffe ,  Shan Huang

IPC分类号： C02F3/34 ,  C02F3/30 ,  C02F101/00 ,  C02F101/20 ,  C02F101/30 ,  C02F101/16

CPC分类号： C02F3/341 ,  C02F3/301 ,  C02F3/303 ,  C02F3/307 ,  C02F3/346 ,  C02F2101/006 ,  C02F2101/16 ,  C02F2101/20 ,  C02F2101/30

摘要： Processes and compositions for removal nitrogen, organic and inorganic contaminants from wastewater using Feammox bacterium are provided.

公开(公告)号：US20170355979A1

公开(公告)日：2017-12-14

申请号：US15361539

申请日：2016-11-28

申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： Hyokwan BAE ,  Seockheon LEE ,  Yunchul CHUNG ,  Jin Young JUNG ,  Dae Hee CHOI ,  Dong Ryeol LEE

IPC分类号： C12N11/10 ,  C02F3/28 ,  C02F3/10 ,  C02F101/16

CPC分类号： C12N11/10 ,  C02F3/106 ,  C02F3/107 ,  C02F3/108 ,  C02F3/302 ,  C02F3/303 ,  C02F3/307 ,  C02F3/348 ,  C12N11/04 ,  C12N11/08 ,  Y02W10/15

摘要： Disclosed is a method for preparing the same. The method for preparing a carrier including ammonium oxidizing bacteria immobilized therein includes: preparing a PVA-alginate mixed solution containing PVA mixed with alginate; adding sludge containing ammonium oxidizing bacteria and sodium bicarbonate (NaHCO3) to the PVA-alginate mixed solution to obtain a foaming-beading solution; and dropping the foaming-beading solution to a saturated boric acid solution to obtain beads including sludge immobilized therein, wherein sodium bicarbonate (NaHCO3) is decomposed to produce carbon dioxide (CO2) which is discharged to the exterior of the beads to form pores in the beads, when the foaming-beading solution is dropped to the saturated boric acid solution to obtain beads including sludge immobilized therein.

公开(公告)号：US09815722B2

公开(公告)日：2017-11-14

申请号：US14085841

申请日：2013-11-21

申请人： cyklar-stulz GmbH

发明人： Geert Nyhuis

IPC分类号： C02F3/30 ,  C02F3/12 ,  C02F1/38

CPC分类号： C02F3/307 ,  C02F1/385 ,  C02F3/1221 ,  Y02W10/15

摘要： A method and installation for treating wastewater containing ammonia includes feeding activated sludge from an aeration tank into a hydrocyclone. The sludge is separated into a specifically heavy fraction containing mostly anaerobic ammonia-oxidizing bacteria (anammox) and a specifically light fraction containing mostly aerobic oxidizing bacteria (AOB), which are returned to the aeration tank. The hydrocyclone includes a roughened inner wall surface for at least partially removing an organic or inorganic cover layer disposed on the anaerobic ammonium-oxidizing bacteria (anammox).

公开(公告)号：US09802847B2

公开(公告)日：2017-10-31

申请号：US14033686

申请日：2013-09-23

申请人： D.C. Water & Sewer Authority

发明人： Sudhir N. Murthy ,  Eugenio Giraldo ,  Norman D. Dockett ,  Walter F. Bailey

IPC分类号： C02F3/00 ,  C02F3/12 ,  B01D36/00 ,  C02F3/28 ,  C02F3/30

CPC分类号： C02F3/00 ,  B01D36/00 ,  C02F3/006 ,  C02F3/12 ,  C02F3/1205 ,  C02F3/1221 ,  C02F3/1226 ,  C02F3/1236 ,  C02F3/2866 ,  C02F3/307 ,  C02F2209/005 ,  C02F2209/10 ,  C02F2209/105 ,  C02F2303/24 ,  Y02E50/343 ,  Y02W10/15

摘要： An apparatus and method for selecting and retaining solids in an activated sludge process for the improving wastewater treatment using screens. The screens can be used to separate and retain solids based on size or compressibility. The screens are used to separate and select for slow growing organisms, faster settling organisms, or materials added to absorb, treat or remove constituents in the activated sludge process.

公开(公告)号：US20170253515A1

公开(公告)日：2017-09-07

申请号：US15601678

申请日：2017-05-22

申请人： John H. Reid

发明人： John H. Reid

IPC分类号： C02F11/04 ,  C02F3/22 ,  C02F3/30

CPC分类号： C02F11/04 ,  C02F3/22 ,  C02F3/303 ,  C02F3/307 ,  C02F2209/10 ,  C02F2209/40 ,  C02F2301/043 ,  Y02W10/15

摘要： A common final clarifier is provided downstream of a two-stage or three-stage activated sludge (AS) system that includes: (A) one or more flow equalization basin (FEB) reactors and a nitritation reactor as the first AS stage, and an anammox reactor as the second AS stage, or (B) a carbonaceous biological oxygen demand (BOD) removal reactor and one or more FEBs as the first AS stage, a nitritation reactor as the second AS stage, and an anammox reactor as the third AS stage. A first return activated sludge (RAS) flow is conducted from the final clarifier to the first AS stage and a second segregated RAS flow is conducted to the second AS stage. Alternatively, a third segregated RAS flow is conducted to the third AS stage.

公开(公告)号：US20170253513A1

公开(公告)日：2017-09-07

申请号：US15603410

申请日：2017-05-23

申请人： Jiangxi JDL Environmental Protection Co., Ltd.

发明人： Zhimin LIAO ,  Tao ZHOU

IPC分类号： C02F3/30 ,  C02F3/34 ,  C02F3/12 ,  C02F3/20 ,  C02F1/44 ,  C02F3/00

CPC分类号： C02F3/301 ,  C02F1/444 ,  C02F3/006 ,  C02F3/1273 ,  C02F3/201 ,  C02F3/307 ,  C02F3/308 ,  C02F3/341 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2209/22 ,  Y02W10/15

摘要： A method of wastewater treatment using a membrane bioreactor, including: controlling aeration to enable a dissolved oxygen concentration to be 0 to 1.5 mg/L, and keeping the integrated reaction vessel under a facultative environment. A wastewater treatment system by the membrane bioreactor without physical area division includes a reaction vessel, a membrane separation system, a water production system, and an aeration system. The membrane separation system is disposed inside the reaction vessel. The water production system communicates with the membrane separation system to pump filtrate out of the membrane separation system. The aeration system is employed to aerate the reaction vessel and the membrane separation system.