公开(公告)号：US20180009687A1

公开(公告)日：2018-01-11

申请号：US15630648

申请日：2017-06-22

申请人： Sudhir N. Murthy ,  Haydee De Clippeleir ,  Christine Debarbadillo ,  Charles B. Bott ,  Stephanie Klaus ,  Bernhard Wett

发明人： Sudhir N. Murthy ,  Haydee De Clippeleir ,  Christine Debarbadillo ,  Charles B. Bott ,  Stephanie Klaus ,  Bernhard Wett

IPC分类号： C02F3/30 ,  C02F3/00

CPC分类号： C02F3/305 ,  C02F3/006 ,  C02F3/307 ,  C02F2209/006 ,  C02F2209/14 ,  C02F2209/15 ,  C02F2209/40 ,  C02F2209/44 ,  Y02E50/343

摘要： This disclosure relates to nitrogen removal with carbon addition, including for wastewater treatment. The denitrification reaction may be terminated at an intermediate nitrite product which is supplied to the anammox reaction. Nitrogen may be removed by use of an electron donor source including, but not limited to, acetate or glycerol at a specific zone. The electron donor may be used to convert nitrate to nitrite through appropriate dosing, anoxic SRT and/or maintenance of a nitrate residual in isolation or in combination. The subsequent supply of nitrite and ammonia for anammox reactions is also proposed. The slower growing anammox may be selectively retained on media or using other physical approaches. The overall intent of the present disclosure is to minimize the use of electron donor by maximizing denitratation and anammox reactions. Test results for selective retention of anammox in biofilm, granular or suspended growth system or nitrate residual control are provided.

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：US06863818B2

公开(公告)日：2005-03-08

申请号：US10365567

申请日：2003-02-11

申请人： Glen T. Daigger ,  Albert M. Wollmann ,  Sudhir N. Murthy ,  Edwin J. Fleischer ,  Thomas A. Broderick

发明人： Glen T. Daigger ,  Albert M. Wollmann ,  Sudhir N. Murthy ,  Edwin J. Fleischer ,  Thomas A. Broderick

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

CPC分类号： C02F3/30 ,  C02F1/283 ,  C02F3/006 ,  C02F3/12 ,  C02F3/121 ,  C02F3/1226 ,  C02F3/1273 ,  C02F3/308 ,  C02F2209/22 ,  Y02W10/15

摘要： An apparatus using activated sludge for the removal of biological nutrients from a wastewater includes a bioreactor for containing a mixture of wastewater under treatment and activated sludge. The bioreactor is divided into a plurality of serially connected treatment zones and includes a wastewater inlet, a downstream aerobic zone and an upstream aerobic zone between the wastewater inlet and the downstream aerobic zone, the upstream and downstream aerobic zones being separated by an anoxic zone. A method for removal of nutrients from a wastewater includes providing a wastewater to an inlet of a serial, multi-zone, activated sludge bioreactor containing an activated sludge. The bioreactor has a downstream aerobic zone from which water is removed and an upstream aerobic zone between the wastewater inlet and the downstream aerobic zone, the upstream and downstream aerobic zones being separated by an anoxic zone.

摘要翻译： 使用活性污泥从废水中除去生物营养物质的装置包括用于含有处理废水和活性污泥的混合物的生物反应器。 生物反应器分为多个串联连接的处理区，包括废水入口，下游需氧区和污水入口与下游好氧区之间的上游好氧区，上游和下游好氧区被缺氧区隔开。 从废水中去除营养物的方法包括向含有活性污泥的连续多区活性污泥生物反应器的入口提供废水。 生物反应器具有下游需氧区，水从其中被除去，并且在废水入口和下游需氧区之间的上游好氧区，上游和下游好氧区被缺氧区分离。

公开(公告)号：US07404897B2

公开(公告)日：2008-07-29

申请号：US11585796

申请日：2006-10-25

申请人： Walter F. Bailey, Jr. ,  Sudhir N. Murthy ,  Leonard Benson ,  Timothy Constantine ,  Glen T. Daigger ,  Thomas E. Sadick ,  Dimitrios Katehis

发明人： Walter F. Bailey, Jr. ,  Sudhir N. Murthy ,  Leonard Benson ,  Timothy Constantine ,  Glen T. Daigger ,  Thomas E. Sadick ,  Dimitrios Katehis

IPC分类号： C02F3/00

CPC分类号： C02F3/301 ,  C02F3/121 ,  C02F3/302 ,  Y02W10/15

摘要： An efficient system and process for removing nitrogen from wastewater while enriching seed sludge in the mainstream treatment process. Bioaugmentation of seed autotrophic organisms facilitate the nitrification reactions by enhancing the rates of reaction advantageously within a smaller volume or within a shorter activated sludge solids retention time. Likewise, bioaugmentation of seed denitrification organisms will also enhance rate of reaction within a smaller volume or shorter activated sludge solids retention time. Separate treatment of high ammonia digester reject water is an efficient method to treat nitrogen in recycle streams as well as to enrich the seed nitrifying and denitrifying cultures.

摘要翻译： 一种在主流处理过程中富集种子污泥的同时，从废水中除氮的有效系统和方法。 种子自养生物体的生物促进通过有利地在更小的体积内或更短的活性污泥固体保留时间内提高反应速率来促进硝化反应。 同样，种子脱氮生物体的生物增殖也将在更短的体积或更短的活性污泥固体保留时间内提高反应速率。 高氨蒸煮器废水的分离处理是处理再循环物流中氮的有效方法，也是浓缩种子硝化和反硝化培养物的有效方法。

公开(公告)号：US06685834B1

公开(公告)日：2004-02-03

申请号：US09467814

申请日：1999-12-20

申请人： Sudhir N. Murthy ,  R. David Holbrook ,  John T. Novak ,  Sun-Nan Hong

发明人： Sudhir N. Murthy ,  R. David Holbrook ,  John T. Novak ,  Sun-Nan Hong

IPC分类号： C02F300

CPC分类号： C02F11/14 ,  C02F11/02 ,  C02F2301/106 ,  Y02W10/27

摘要： A Method of treating sludge prior to dewatering by mixing with the sludge a cationic metal in the form of an iron or aluminum slat along with a cationic polymer. The addition of the iron or aluminum salt substantially reduces the amount of polymer required for acceptable dewatering, thusly significantly reducing the cost of the dewatering process. The method is enhanced by subjecting the prior digested sludge to mesophilic aeration prior to the cationic metal salt and polymer being added.

摘要翻译： 一种在脱水之前通过与污泥一起处理污泥的方法，将阳离子金属与阳离子聚合物一起形成铁或铝板条。 铁或铝盐的添加大大减少了可接受的脱水所需的聚合物的量，从而显着地降低了脱水过程的成本。 该方法通过在阳离子金属盐和聚合物加入之前对先前消化的污泥进行中温充气进行增强。

公开(公告)号：US06517723B1

公开(公告)日：2003-02-11

申请号：US09626879

申请日：2000-07-27

申请人： Glen T. Daigger ,  Albert M. Wollmann ,  Sudhir N. Murthy ,  Edwin J. Fleischer ,  Thomas A. Broderick

发明人： Glen T. Daigger ,  Albert M. Wollmann ,  Sudhir N. Murthy ,  Edwin J. Fleischer ,  Thomas A. Broderick

IPC分类号： C02F300

CPC分类号： C02F3/30 ,  C02F1/283 ,  C02F3/006 ,  C02F3/12 ,  C02F3/121 ,  C02F3/1226 ,  C02F3/1273 ,  C02F3/308 ,  C02F2209/22 ,  Y02W10/15

摘要： An apparatus using activated sludge for the removal of biological nutrients from a wastewater includes a bioreactor for containing a mixture of wastewater under treatment and activated sludge. The bioreactor is divided into a plurality of serially connected treatment zones and includes a wastewater inlet, a downstream aerobic zone and an upstream aerobic zone between the wastewater inlet and the downstream aerobic zone. A membrane filter is provided in the downstream aerobic zone so that it functions as an immersed membrane filter with a bioreactor containing an operative volume of wastewater and activated sludge. The immersed membrane filter filters treated water flowing from the bioreactor through a first outlet. An aerator is operative associated with the membrane filter for purging solids from the membrane filter. A second outlet in the downstream aerobic zone is connected to an inlet in the upstream aerobic zone for recycling activated sludge charged with oxygen from the downstream aerobic zone to the upstream aerobic zone. A method for removal of nutrients from a wastewater includes providing a wastewater to an inlet of a serial, multi-zone, activated sludge bioreactor containing an activated sludge. The bioreactor has a downstream aerobic zone from which water is removed and an upstream aerobic zone between the wastewater inlet and the downstream aerobic zone. Treated water is filtered from the activated sludge in the downstream aerobic zone through an immersed membrane filter. Solids are purged from the immersed membrane filter with an oxygen containing gas and return activated sludge charged with oxygen is recycled from the downstream to the upstream aerobic zone or to an upstream deaeriation zone.

摘要翻译： 使用活性污泥从废水中除去生物营养物质的装置包括用于含有处理废水和活性污泥的混合物的生物反应器。 生物反应器分为多个串联连接的处理区，包括废水入口，下游需氧区和污水入口与下游好氧区之间的上游好氧区。 在下游需氧区域设置膜过滤器，使其作为具有生物反应器的浸入式膜过滤器，该生物反应器含有操作体积的废水和活性污泥。 浸入的膜过滤器将处理过的水从生物反应器中流过第一个出口。 与膜过滤器相关联的曝气器用于从膜过滤器中吹扫固体。 下游好氧区中的第二出口连接到上游好氧区的入口，用于将从下游好氧区充满氧的活性污泥再循环到上游好氧区。一种从废水中去除营养物质的方法包括提供废水 含有活性污泥的连续多区活性污泥生物反应器的入口。 生物反应器具有下游需氧区域，水从其中除去，并且在废水入口和下游需氧区之间的上游好氧区。 处理水通过浸没的膜过滤器从下游好氧区的活性污泥中过滤。 用含氧气体从浸没的膜过滤器中清除固体，并将返回的充满氧气的活性污泥从下游循环到上游好氧区或上游脱气区。

公开(公告)号：US07833415B2

公开(公告)日：2010-11-16

申请号：US11585842

申请日：2006-10-25

申请人： Sudhir N. Murthy ,  John T. Novak ,  Walter F. Bailey, Jr. ,  Glen T. Daigger ,  Perry Schafer ,  Christopher Peot

发明人： Sudhir N. Murthy ,  John T. Novak ,  Walter F. Bailey, Jr. ,  Glen T. Daigger ,  Perry Schafer ,  Christopher Peot

IPC分类号： C02F3/00

CPC分类号： C02F11/04 ,  C02F11/02 ,  Y02W10/27

摘要： An improved process for sludge treatment includes anaerobic digestion followed by post-mesophilic aerobic and/or anoxic digestion. The first anaerobic step may be performed under either mesophilic or thermophilic conditions. The subsequent aerobic/anoxic digestion may be performed using either simultaneous, sequential or pulsed aerobic and anoxic conditions. An apparatus for performing the improved sludge treatment may be one digester for performing the anaerobic followed by aerobic/anoxic digestion. Alternatively, the system for performing the improved sludge treatment techniques may be at least two digest reactors.

摘要翻译： 改进的污泥处理方法包括厌氧消化，然后是嗜中性好氧和/或缺氧消化。 第一厌氧步骤可以在嗜温或嗜温条件下进行。 随后的有氧/缺氧消化可以使用同时，顺序或脉冲有氧和缺氧条件进行。 用于进行改进的污泥处理的装置可以是一个用于进行厌氧，然后进行有氧/缺氧消化的消化器。 或者，用于执行改进的污泥处理技术的系统可以是至少两个消化反应器。