公开(公告)号：US20240216867A1

公开(公告)日：2024-07-04

申请号：US18317162

申请日：2023-05-15

申请人： Xi'an University of Architecture and Technology

发明人： Rong Chen ,  Zhen Lei ,  Jiale Zheng ,  Hong Luo

IPC分类号： B01D65/02 ,  B01D63/02 ,  B01D63/08 ,  B01D65/08 ,  C02F1/28 ,  C02F3/00 ,  C02F3/28

CPC分类号： B01D65/02 ,  B01D63/02 ,  B01D63/08 ,  B01D65/08 ,  C02F1/283 ,  C02F3/006 ,  C02F3/284 ,  C02F3/2853 ,  C02F3/2893 ,  C02F2101/30 ,  C02F2209/02 ,  C02F2209/03 ,  C02F2209/38 ,  C02F2209/40 ,  C02F2303/20

摘要： Provided is a biochar-anaerobic membrane biological treatment system and process. The system mainly includes a reaction tank, a membrane module, a macroporous gas distribution device, low-temperature pyrolysis biochar. The application of the process to sewage treatment shows that: under the conditions that the hydraulic retention time is 3.2-7.2 h, the membrane flux is 12.0-17.8 L/m2/h, and the sludge concentration of 7.2-15.6 g/L, multiple objectives of promoting organic micropollutants (OMPs) biotransformation, accelerating methane production and strengthening membrane fouling control were achieved. The system improved OMPs removal efficiency by more than 20%, decreased membrane fouling rate by 50%, and reaching an organic matter removal efficiency of more than 86% at low temperature. The system and process solve the problems of poor OMPs removal efficiency, serious membrane fouling, and low methane yield at low temperature in the anaerobic membrane biological treatment system.

公开(公告)号：US11970684B2

公开(公告)日：2024-04-30

申请号：US18153689

申请日：2023-01-12

申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Steven Skerlos ,  Lutgarde Raskin ,  Timothy Fairley-Wax ,  Nishant Jalgaonkar

IPC分类号： C12M1/00 ,  C02F3/10 ,  C02F3/12 ,  C02F3/28 ,  C12M1/12 ,  C12M1/26 ,  C12M3/06 ,  C12P5/02

CPC分类号： C12M29/26 ,  C02F3/10 ,  C02F3/1268 ,  C02F3/2806 ,  C02F3/2853 ,  C12M23/06 ,  C12M25/00 ,  C12M27/14 ,  C12M33/14 ,  C12P5/023

摘要： The disclosure relates to bioreactors, for example for biological treatment and, more specifically to bioreactor insert apparatus including biofilms and related methods. The bioreactor insert apparatus provides a means for circulation of reaction medium within the bioreactor, a biofilm support, and biological treatment of an inlet feed to die reactor/insert apparatus. The bioreactor insert apparatus has a high relative surface area for biofilm attachment and is capable of generating complex flow patterns and increasing treatment efficiency/biological conversion activity in a biologically-active reactor. The high surface area structure incorporates multiple biofilm support structures such as meshes at inlet and outlet portions of the structure. The biofilm support structures and biofilms thereon can increase overall reaction rate of the bioreactor and/or perform some solid/liquid separation in the treatment of the wastewater or other influent.

公开(公告)号：US11795082B2

公开(公告)日：2023-10-24

申请号：US17397370

申请日：2021-08-09

申请人： Chongqing University ,  Chongqing Yuanxian Environmental Technology Co., Ltd.

发明人： Li Gu ,  Xiaofeng Xu ,  Jianhao Li ,  Wen Li ,  Meng Gao ,  Hua Xiang ,  Qiang He

IPC分类号： C02F3/30 ,  C02F3/12 ,  C02F3/28 ,  C02F3/34

CPC分类号： C02F3/301 ,  C02F3/1268 ,  C02F3/2853 ,  C02F3/34 ,  C02F2201/005 ,  C02F2201/006 ,  C02F2203/006 ,  C02F2209/42 ,  C02F2301/046 ,  C02F2303/16

摘要： Disclosed is a split continuous operation micro-grid dynamic membrane bioreactor. The split continuous operation micro-grid dynamic membrane bioreactor comprises a biological treatment unit and a drum dynamic membrane filtration unit, wherein the biological treatment unit comprises a microbiological treatment tank, and a water inlet pipe is arranged on the microbiological treatment tank; the drum dynamic membrane filtration unit comprises a filter tank, and a drum micro-grid dynamic membrane mechanism is arranged in the filter tank; the drum micro-grid dynamic membrane mechanism comprises a filter drum, a backwashing device is arranged above the filter drum, and a sludge collecting tank is arranged in the filter drum; a water outlet is formed in the bottom of the filter tank; a mixed liquid pipe is arranged between the microbiological treatment tank and the filter drum; and a sludge discharge header pipe is arranged on the sludge collecting tank.

公开(公告)号：US20180147537A1

公开(公告)日：2018-05-31

申请号：US15657099

申请日：2017-07-21

申请人： DOOSAN HEAVY INDUSTRIES CONSTRUCTION CO., LTD.

发明人： Woo Nyoung LEE

IPC分类号： B01D63/16 ,  C02F3/12 ,  C02F3/28

CPC分类号： B01D63/16 ,  B01D61/18 ,  B01D61/22 ,  B01D65/08 ,  B01D2313/06 ,  B01D2313/12 ,  B01D2313/14 ,  B01D2313/90 ,  B01D2315/04 ,  B01D2315/06 ,  C02F3/1268 ,  C02F3/1273 ,  C02F3/2853 ,  C02F2203/006

摘要： A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, and a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath, and a filtered-water discharge part discharging filtered water that has been filtered via the separation membrane module. The filtered-water discharge part is formed to be movable or stretchable in response to a reciprocating motion of the membrane support frame.

公开(公告)号：US09902636B2

公开(公告)日：2018-02-27

申请号：US14424162

申请日：2012-09-10

申请人： Sijing Wang ,  Lei Wang ,  Haiwu Zhang ,  Weiqing Xu ,  Ying Zhou

发明人： Sijing Wang ,  Lei Wang ,  Haiwu Zhang ,  Weiqing Xu ,  Ying Zhou

IPC分类号： C02F3/04 ,  C02F3/34 ,  C02F3/02 ,  C02F3/10 ,  C02F3/12 ,  C02F3/28 ,  C02F101/30 ,  C02F101/32 ,  C02F101/36 ,  C02F101/38 ,  C02F103/06 ,  C02F103/36 ,  C02F3/00

CPC分类号： C02F3/341 ,  C02F3/02 ,  C02F3/04 ,  C02F3/106 ,  C02F3/107 ,  C02F3/108 ,  C02F3/1268 ,  C02F3/2853 ,  C02F3/348 ,  C02F2003/001 ,  C02F2003/003 ,  C02F2101/30 ,  C02F2101/327 ,  C02F2101/36 ,  C02F2101/38 ,  C02F2103/06 ,  C02F2103/365 ,  C02F2203/004 ,  C02F2305/06 ,  Y02W10/15

摘要： A method for reducing recalcitrant chemical oxygen demand (COD) of a liquid in a water system is provided. The method comprises pretreating the liquid in a pretreatment unit (12) to remove indigenous bacteria or microbes to a population level below which the indigenous organisms can interfere with the screened and externally introduced microorganisms. The liquid is then provided to a reactor (20) that has a filter bed (22) formed with a carrier material (26). Special microbes are screened and used to colonize the carrier material (26) to remove recalcitrant COD. A biofilm is cultured on the surface of the carrier material (26) to immobilize the screened microbes in the reactor (20). The method further comprises adding a co-substrate as the liquid enters the reactor (20) and percolating the liquid through the filter bed (22) colonized with the screened microbes to degrade at least part of the recalcitrant COD under aerobic conditions. The screened microbes comprise at least one microbial species selected from the group consisting of Bacillus, Comamonas, Arthrobacter, Micrococcus, Pseudomonas, Pediococcus, Achromobacter, Flavobacterium, Mycobacterium, Rhodanobacter, Stenotrophomonas and yeast.

公开(公告)号：US20180008935A1

公开(公告)日：2018-01-11

申请号：US15677022

申请日：2017-08-15

申请人： Jiangnan University

发明人： Xiufen Li ,  Xiaoli Song ,  Xinhua Wang ,  Yueping Ren ,  Xiguang Qi

IPC分类号： B01D65/10 ,  B01D71/34 ,  B01D71/30 ,  C02F3/28 ,  B01D69/06

CPC分类号： B01D65/10 ,  B01D61/20 ,  B01D65/02 ,  B01D69/06 ,  B01D71/30 ,  B01D71/34 ,  B01D2321/162 ,  B01D2321/168 ,  B01D2321/40 ,  C02F3/1268 ,  C02F3/2853 ,  C02F2303/16 ,  Y02W10/15

摘要： The present invention relates to a comprehensive evaluation method for the performance of contaminated flat membranes, which relates to the field of sewage and waste resource technology. The present invention firstly analyzed the composition of the surface elements of the contaminated membrane by EDX to determine the type of membrane contamination, and then designed different cleaning schemes for organic or inorganic pollution to obtain a sample membrane. When the tensile strength of the contaminated membrane decreased more than 50% than that of the control membrane, it is a waste membrane; when the tensile strength decreased less than 50% and the membrane flux reduced more than 30%, it is a waste membrane; when tensile strength decreased less than 50%, membrane flux reduced less than 30% and the carbon footprint was more than 188 g, it is a waste membrane; otherwise was a old membrane. The comprehensive evaluation method of the present invention can quantitatively, quickly and comprehensively define the difference between the old membrane and the waste membrane, and provides the basis for the selection of the contaminated membrane and the process of the regeneration and reuse.

公开(公告)号：US09862629B2

公开(公告)日：2018-01-09

申请号：US14935645

申请日：2015-11-09

申请人： Envirogen Technologies, Inc.

发明人： Samuel Frisch

IPC分类号： C02F1/44 ,  C02F3/28 ,  C02F3/30 ,  C02F3/08 ,  C02F101/10

CPC分类号： C02F3/2853 ,  C02F1/44 ,  C02F3/085 ,  C02F3/2833 ,  C02F3/301 ,  C02F2101/106 ,  C02F2209/04 ,  C02F2303/20 ,  Y02W10/15

摘要： A system is provided for treating contaminated water. The system includes a bioreactor having an outlet for treated water and a filter coupled to receive treated water from the outlet of the bioreactor. The filter is configured to operate in an anoxic mode. The filter has: (a) a vessel configured to receive the treated water, (b) a membrane associated with the vessel and positioned to extract permeate from the received water, (c) a fluid outlet positioned to direct fluid toward the membrane to inhibit film build up on the membrane, (d) a fluid recirculator positioned to recirculate fluid between the vessel and the fluid outlet, and (e) an oxidant supply positioned to introduce an oxidant into the vessel, the oxidant supply being adjustable to control the oxidation-reduction potential of the received water in the vessel within a predetermined range.

公开(公告)号：US20170313608A1

公开(公告)日：2017-11-02

申请号：US15632708

申请日：2017-06-26

申请人： Frontier Water Systems, LLC

发明人： James John Peterson ,  Timothy Michael Pickett

IPC分类号： C02F3/28 ,  B01D61/14 ,  B01D61/02 ,  C02F1/44 ,  C02F101/10 ,  C02F103/10

CPC分类号： C02F3/286 ,  B01D61/025 ,  B01D61/027 ,  B01D61/04 ,  B01D61/145 ,  B01D61/147 ,  B01D61/16 ,  B01D61/58 ,  B01D2311/04 ,  B01D2311/06 ,  B01D2311/2649 ,  B01D2311/2665 ,  B01D2311/2688 ,  C02F1/20 ,  C02F1/42 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/66 ,  C02F1/70 ,  C02F3/006 ,  C02F3/06 ,  C02F3/085 ,  C02F3/106 ,  C02F3/2806 ,  C02F3/2826 ,  C02F3/2833 ,  C02F3/2853 ,  C02F3/30 ,  C02F5/02 ,  C02F9/00 ,  C02F2003/003 ,  C02F2101/103 ,  C02F2101/106 ,  C02F2101/163 ,  C02F2101/166 ,  C02F2101/36 ,  C02F2103/10 ,  C02F2209/006 ,  C02F2209/03 ,  C02F2209/04 ,  C02F2209/06 ,  C02F2209/11 ,  C02F2209/22 ,  C02F2209/40 ,  C02F2301/043 ,  C02F2301/046 ,  C02F2301/063 ,  C02F2301/08 ,  C02F2303/16 ,  C02F2305/06 ,  Y02W10/15

摘要： A biological reactor system treats concentrated contaminated water with a combination of upflow and downflow bioreactors that are downstream from a reverse osmosis or other concentrator. The system may have a fail safe configuration where flush water may be introduced to the reactors in the event of a power failure or when taking the reactors offline. Many reverse osmosis systems introduce antiscalant treatments upstream so that the reverse osmosis filters do not scale. However, such treatments result in superconcentrated conditions of the antiscalants in the contaminated water processed by the bioreactors. A flushing system may deconcentrate the bioreactors to prevent the antiscalants from precipitating and fouling the bioreactors.

公开(公告)号：US20170217810A1

公开(公告)日：2017-08-03

申请号：US15501282

申请日：2015-07-30

申请人： Koji IDO ,  Yasumasa IDO, Ido

发明人： Koji IDO ,  Yasumasa IDO, Ido

IPC分类号： C02F11/04 ,  B09B3/00 ,  C12P5/02 ,  B01D61/14 ,  B01D61/02 ,  C02F11/00 ,  B01D61/58

CPC分类号： C02F11/04 ,  B01D61/02 ,  B01D61/025 ,  B01D61/14 ,  B01D61/145 ,  B01D61/16 ,  B01D61/58 ,  B01D2311/04 ,  B01D2311/08 ,  B01D2311/25 ,  B01D2317/025 ,  B09B3/00 ,  C02F1/441 ,  C02F1/444 ,  C02F3/2853 ,  C02F11/00 ,  C02F2303/26 ,  C12M21/04 ,  C12M33/14 ,  C12M45/02 ,  C12M47/02 ,  C12P5/023 ,  Y02E50/343 ,  B01D2311/2688

摘要： A methane fermentation system which can efficiently generate methane gas is provided. The methane fermentation system decomposes an organic waste with an anaerobic microorganism to cause methane fermentation so as to generate the methane gas. The methane fermentation system includes a wet bead mill which finely pulverizes the organic waste. The methane fermentation system also includes a methane fermentation chamber in which the organic waste finely pulverized in the wet bead mill is decomposed with the anaerobic microorganism to cause the methane fermentation so as to generate the methane gas.

公开(公告)号：US20160318787A1

公开(公告)日：2016-11-03

申请号：US15209259

申请日：2016-07-13

申请人： ANAERGIA INC.

发明人： Andrew BENEDEK

IPC分类号： C02F11/04 ,  C02F3/28 ,  C02F11/12 ,  C12P5/02

CPC分类号： C02F11/04 ,  B01D61/145 ,  B01D61/147 ,  B01D61/18 ,  B01D2311/04 ,  B01D2311/25 ,  B01D2311/2642 ,  B01D2311/2649 ,  B01D2315/06 ,  C02F3/2853 ,  C02F11/121 ,  C02F2103/20 ,  C02F2203/004 ,  C12M21/04 ,  C12M33/00 ,  C12P5/023 ,  Y02E50/343

摘要： A process and apparatus for the anaerobic digestion of organic wastes, preferably to also produce a useful biogas, is described. The waste may have a total solids (TS) concentration of 6% or less while a digester is operated at a higher solids concentration, for example with a feed TS concentration of 8-12%. One or more separation stages downstream of the digester separate active bacteria and undigested organics from the digestate, and return separated matter to the digester. Optionally, a feed thickening apparatus and step may be provided upstream of the digester. The upstream thickener and recycle from the downstream separation stages are operated such that the TS of the combined inputs to the digester is within a desired range.

摘要翻译： 描述了有机废物厌氧消化的方法和装置，优选还产生有用的沼气。 废物可以具有6％或更低的总固体（TS）浓度，而消化器以更高的固体浓度操作，例如进料TS浓度为8-12％。 蒸煮器下游的一个或多个分离阶段将活性细菌和未消化的有机物与消化物分离，并将分离的物质返回到蒸煮器。 任选地，可以在蒸煮器的上游设置进料增稠装置和步骤。 操作上游增稠器和从下游分离级循环，使得到蒸煮器的组合输入的TS在期望的范围内。