公开(公告)号：US20220289606A1

公开(公告)日：2022-09-15

申请号：US17654796

申请日：2022-03-14

申请人： Bernhard Wett ,  Sudhir Murthy ,  Hampton Roads Sanitation District ,  D.C. Water and Sewer Authority

发明人： Charles Bott ,  Stephanie Klaus ,  Michael Parsons ,  Haydee De Clippeleir ,  Christine deBarbadillo ,  Bernhard Wett ,  Sudhir Murthy

IPC分类号： C02F3/30

摘要： A methodology, system and apparatus are provided that include anoxic biofilms to perform partial denitrification and anammox (PdNA) reactions. The PdNA reactions can facilitate process intensification and carbon efficient biological nitrogen removal. The anoxic biofilms can be placed in a pre-anoxic zone or a downstream anoxic zone, where the biofilm and reactions are managed, including using storage compounds, to overcome mass transfer limitations in the biofilm. The methodology, system and apparatus can, when compared to state-of-the art technologies, improve the concentration gradient or reduce mass transfer limitations to facilitate PdNA reactions.

公开(公告)号：US20160272521A1

公开(公告)日：2016-09-22

申请号：US15090092

申请日：2016-04-04

申请人： D.C. Water and Sewer Authority

发明人： Sudhir N. Murthy ,  Bernhard Wett ,  Haydee Declippeleir

IPC分类号： C02F3/12 ,  C02F1/52 ,  C02F1/00 ,  C02F3/28 ,  C02F3/30

CPC分类号： C02F3/1221 ,  C02F1/52 ,  C02F3/1226 ,  C02F3/307 ,  C02F2209/10 ,  C02F2209/105 ,  C02F2303/24 ,  Y02W10/15

摘要： An apparatus and method for selecting, retaining or bioaugmenting solids in an activated sludge process for improving wastewater treatment using a screen device. If desired, the screen device may include a drum, and the rotating speed of the drum may be used to control the solids retained. Effluent including waste biomass may exit the screen device. No other discharge unit from the screen device may be required.

摘要翻译： 用于选择，保留或生物活化污泥工艺中固体的装置和方法，以改进使用筛网装置的废水处理。 如果需要，屏幕装置可以包括鼓，并且滚筒的旋转速度可以用于控制保留的固体。 包括废弃生物质在内的废水可能会离开屏幕装置。 不需要屏幕装置的其他放电单元。

公开(公告)号：US11999641B2

公开(公告)日：2024-06-04

申请号：US17654790

申请日：2022-03-14

申请人： Hampton Roads Sanitation District ,  D.C. Water and Sewer Authority ,  Bernhard Wett ,  Sudhir Murthy ,  Maureen O'Shaughnessy

发明人： Maureen O'Shaughnessy ,  Christine deBarbadillo ,  Charles Bott ,  Haydee De Clippeleir ,  Bernhard Wett ,  Sudhir Murthy

IPC分类号： C02F3/12 ,  C02F3/02

CPC分类号： C02F3/1236 ,  C02F3/025 ,  C02F3/1263 ,  C02F3/1268 ,  C02F2301/046

摘要： This disclosure relates to physical selection, deselection or outselection for smaller, less dense, sheared or compressed particles in sludge, wherein the first deselection step occurs at the reactor or at a clarification step, by separately deselecting for such particles and then a second deselection step occurs in an external selector. This double deselection promotes the more efficient removal of slow settling particles, while simultaneously allowing for maintenance of multiple solids residence times for fast and slow growing organisms. The deselection in a clarifier occurs typically at the periphery of the tank or at the surface of a blanket using a positive or negative pressure device. Structures such as slotted or perforated plates, pipes or manifolds can be used to assist in such deselection. Baffles can also be used for such deselection.

公开(公告)号：US20220289603A1

公开(公告)日：2022-09-15

申请号：US17654790

申请日：2022-03-14

申请人： Bernhard Wett ,  Sudhir Murthy ,  Maureen O'Shaughnessy ,  Hampton Roads Sanitation District ,  D.C. Water and Sewer Authority

发明人： Maureen O'Shaughnessy ,  Christine deBarbadillo ,  Charles Bott ,  Haydee De Clippeleir ,  Bernhard Wett ,  Sudhir Murthy

IPC分类号： C02F3/12 ,  C02F3/02

摘要： This disclosure relates to physical selection, deselection or outselection for smaller, less dense, sheared or compressed particles in sludge, wherein the first deselection step occurs at the reactor or at a clarification step, by separately deselecting for such particles and then a second deselection step occurs in an external selector. This double deselection promotes the more efficient removal of slow settling particles, while simultaneously allowing for maintenance of multiple solids residence times for fast and slow growing organisms. The deselection in a clarifier occurs typically at the periphery of the tank or at the surface of a blanket using a positive or negative pressure device. Structures such as slotted or perforated plates, pipes or manifolds can be used to assist in such deselection. Baffles can also be used for such deselection.

公开(公告)号：US20190263696A1

公开(公告)日：2019-08-29

申请号：US16285146

申请日：2019-02-25

申请人： Bernhard Wett ,  Sudhir N. Murthy ,  Hampton Roads Sanitation District ,  D.C. Water and Sewer Authority

发明人： Charles B. Bott ,  Haydee De Clippeleir ,  Bernhard Wett ,  Christine deBarbadillo ,  Sudhir N. Murthy ,  Jessica Edwards-Brandt

IPC分类号： C02F9/00

摘要： An apparatus and a method for removing constituents from an influent. The apparatus includes a biological processor that receives a water mixture as influent and outputs a liquor, a solid-liquid separator that receives the liquor and separates the liquor into a liquid and a solid; and a biofilm media that includes at least one media surface. The biofilm media may have a biofilm mass, biofilm volume, biofilm density, biofilm thickness, hydraulic retention time or solids residence time. The at least one media surface grows a biofilm that removes one or more constituents contained in the influent. The biofilm mass, biofilm volume, biofilm density, biofilm thickness, hydraulic retention time or solids residence time can be controlled by at least one of a physical process, a biological process or a chemical process.

公开(公告)号：US20240262726A1

公开(公告)日：2024-08-08

申请号：US18637779

申请日：2024-04-17

申请人： Bernhard Wett ,  Sudhir Murthy ,  Maureen O’Shaughnessy ,  Hampton Roads Sanitation District ,  D.C. Water and Sewer Authority

发明人： Maureen O’Shaughnessy ,  Christine deBarbadillo ,  Charles Bott ,  Haydee De Clippeleir ,  Bernhard Wett ,  Sudhir Murthy

IPC分类号： C02F3/12 ,  C02F3/02

CPC分类号： C02F3/1236 ,  C02F3/025 ,  C02F3/1263 ,  C02F3/1268 ,  C02F2301/046

摘要： A method and system for deselecting biological solids in an influent containing water. The method and system include supplying an influent to an inlet of a reactor comprising at least one of a bioreactor, an internal deselector, a particle deselector, and one or more return lines; dispersing the influent in the bioreactor to form a solid-liquid mixture containing biological solids; retaining, retarding, or providing a differential of, by the internal deselector, biological solids from the solid-liquid mixture to form a deselected solid-liquid mixture and returnable biological solids; feeding said deselected solid-liquid mixture to the particle deselector; deselecting, by the particle deselector, remainder biological solids from the deselected solid-liquid mixture; and supplying, by the one or more return lines, the returnable biological solids to the bioreactor.