公开(公告)号：US20180170775A1

公开(公告)日：2018-06-21

申请号：US15578563

申请日：2016-06-14

申请人： Saltworks Technologies Inc.

发明人： Xiangchun YIN ,  Benjamin SPARROW

IPC分类号： C02F1/469 ,  C02F1/76 ,  C02F1/66 ,  C02F1/467 ,  B01D61/50

CPC分类号： C02F1/4693 ,  B01D61/44 ,  B01D61/46 ,  B01D61/50 ,  B01D2311/12 ,  B01D2311/2634 ,  B01D2311/2684 ,  C02F1/04 ,  C02F1/441 ,  C02F1/442 ,  C02F1/445 ,  C02F1/447 ,  C02F1/461 ,  C02F1/4674 ,  C02F1/66 ,  C02F1/76 ,  C02F2001/5218 ,  C02F2101/16 ,  C02F2103/10 ,  C02F2103/26 ,  C02F2201/46115 ,  C02F2201/4613 ,  C02F2201/46145 ,  C02F2201/4617 ,  C02F2201/4618 ,  C02F2209/003 ,  C02F2209/006 ,  C02F2209/05 ,  C02F2209/06 ,  C02F2209/14 ,  C02F2209/29 ,  C02F2209/40

摘要： Methods, systems, and techniques for removing ammonium from ammonia-containing water involve using a stack that has alternating product chambers and concentrate chambers for receiving ammonia-containing water and an acidic solution, respectively, with the chambers being bounded by alternating cation exchange membranes and proton permselective cation exchange membranes. Ammonium moves from the product chambers to the concentrate chambers across the CEMs and protons move from the concentrate chambers to the product chambers across the pCEMs when the stack is in use. An electrolyzer may also be used to convert the ammonium in the concentrate chambers into nitrogen.

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：US20170297930A1

公开(公告)日：2017-10-19

申请号：US15516247

申请日：2015-09-28

申请人： XYLEM IP MANAGEMENT S.À R.L.

发明人： Alexis De Kerchove ,  Alan Merry

IPC分类号： C02F1/52 ,  C02F3/12 ,  C02F103/00 ,  C02F101/10

CPC分类号： C02F1/5209 ,  C02F1/5236 ,  C02F1/5245 ,  C02F3/1215 ,  C02F3/1263 ,  C02F3/301 ,  C02F2101/105 ,  C02F2103/001 ,  C02F2103/002 ,  C02F2103/005 ,  C02F2209/08 ,  C02F2209/14 ,  C02F2209/16 ,  C02F2209/18 ,  C02F2209/40 ,  C02F2209/44 ,  Y02W10/15

摘要： A method for treating wastewater by using a coagulant that aggregates a phosphorus-containing substance. The method includes executing a reaction phase having a biological treatment phase and a subsequent chemical treatment phase. The chemical treatment phase includes the first substep of mixing the wastewater while injecting a predetermined dose of the coagulant into the basin in order for the coagulant to contact and coagulate the phosphorus-containing substances. The injection of the dose of the binding compound into the basin is performed during a time period equal to or more than a time period required to accomplish two mixing turnovers of the wastewater and equal to or less than a time period required to accomplish seven mixing turnovers of the wastewater. The second substep includes mixing the wastewater in order to flocculate the coagulated substance.

公开(公告)号：US20170291839A1

公开(公告)日：2017-10-12

申请号：US15513076

申请日：2015-09-24

申请人： Veolia Water Solutions & Technologies Support

发明人： Magnus Christensson ,  Thomas Welander ,  Maria Piculell

IPC分类号： C02F3/30 ,  C02F3/12 ,  C02F11/04 ,  C02F3/08

CPC分类号： C02F3/307 ,  C02F3/08 ,  C02F3/10 ,  C02F3/121 ,  C02F11/04 ,  C02F2101/16 ,  C02F2209/14 ,  C02F2301/08 ,  C02F2301/10 ,  Y02E50/343 ,  Y02W10/15

摘要： A process for converting ammonium (NH4+) of a mainstream of a wastewater plant to dinitrogen gas (N2), including the consecutive steps of i.) removing biodegradable carbon compounds in the mainstream, ii.) converting ammonium (NH4+) in the mainstream to nitrite (NO2−) in an aerated biological process containing ammonium oxidizing bacteria (AOB) in a nitration vessel (133a-133d); and iii.) denitrifying the resulting stream from step ii.) to dinitrogen gas in an anammox vessel (200). Growth of nitrite oxidizing bacteria (NOB) in step ii.) is prevented by periodically subjecting the bacteria in said nitration vessel (133a-133d) to water suppressing growth of nitrite oxidizing bacteria (NOB).

公开(公告)号：US09771281B2

公开(公告)日：2017-09-26

申请号：US14377465

申请日：2013-02-08

申请人： Valorbec Société en Commandite ,  UNIVERSITY OF MANITOBA

发明人： Sharif Ibeid ,  Maria Elektorowicz ,  Jan Oleszkiewicz

IPC分类号： C02F1/467 ,  C02F3/00 ,  C02F3/30 ,  C02F1/463 ,  C02F3/20 ,  C02F1/461 ,  C02F103/34 ,  C02F3/12

CPC分类号： C02F1/4672 ,  C02F1/463 ,  C02F3/005 ,  C02F3/1273 ,  C02F3/20 ,  C02F3/301 ,  C02F3/302 ,  C02F3/307 ,  C02F2001/46133 ,  C02F2001/46171 ,  C02F2103/34 ,  C02F2201/003 ,  C02F2201/4614 ,  C02F2201/4615 ,  C02F2201/46155 ,  C02F2201/46175 ,  C02F2203/004 ,  C02F2209/04 ,  C02F2209/08 ,  C02F2209/14 ,  C02F2209/16 ,  C02F2209/18 ,  C02F2209/22 ,  C02F2209/44 ,  C02F2303/04 ,  Y02W10/15

摘要： There are provided processes for treating wastewater. The processes can comprise treating a mixture comprising the wastewater and an activated sludge, in a single reactor, with an electric current having a density of less than about 55 A/m2, by means of at least one anode and at least one cathode that define therebetween an electrical zone for treating the mixture; exposing the mixture to an intermittent ON/OFF electrical exposure mode to the electric current in which an OFF period of time is about 1 to about 10 times longer than an ON period of time; and maintaining an adequate oxidation-reduction potential in the single reactor. Such processes allow for substantial removal of carbon, nitrogen and phosphorus from the wastewater in the single reactor of various forms and for obtaining another mixture comprising a treated wastewater and solids.

公开(公告)号：US20170253505A1

公开(公告)日：2017-09-07

申请号：US15354498

申请日：2016-11-17

申请人： Michael T Derzack

发明人： Michael T Derzack

IPC分类号： C02F1/68

CPC分类号： C02F1/76 ,  C02F2103/10 ,  C02F2103/36 ,  C02F2209/14 ,  C02F2303/04 ,  C02F2305/00

摘要： The invention is a method of remediating water by adding to a quantity of water to be treated a compound or composition that generates hypohalous acid in situ, followed by addition or generation of ammonia to create an excess of ammonia and in turn to accomplish heretofore unachievable benefits and efficiencies.

公开(公告)号：US20170253502A1

公开(公告)日：2017-09-07

申请号：US15518212

申请日：2015-10-09

申请人： XOGEN TECHNOLOGIES INC.

发明人： Dorin BEJAN ,  Craig GAGNON

IPC分类号： C02F1/467 ,  C02F1/00

CPC分类号： C02F1/4674 ,  C02F1/008 ,  C02F2101/16 ,  C02F2201/46135 ,  C02F2201/4614 ,  C02F2201/46145 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/005 ,  C02F2209/14 ,  C02F2209/29 ,  C02F2209/40

摘要： The present disclosure relates generally to oxidation of ammonia using electrochemistry. Methods and systems may include at least one sensor to measure the concentration of ammonia in the effluent and/or the concentration of chlorine gas in the effluent. Methods and systems may also include at least one controller in communication with the sensor and/or the anode to reduce the current density of the anode generating the chlorine, and/or to change the flow rate of the ammonia containing water entering the reactor.

公开(公告)号：US20170050872A1

公开(公告)日：2017-02-23

申请号：US15241718

申请日：2016-08-19

申请人： BluMetric Environmental Inc.

发明人： Danny Lee SCROGGINS

IPC分类号： C02F3/26 ,  C02F1/42 ,  C02F1/66 ,  C02F3/00 ,  C02F3/10 ,  C02F1/20

CPC分类号： C02F1/42 ,  C02F1/20 ,  C02F1/66 ,  C02F3/006 ,  C02F3/1273 ,  C02F3/20 ,  C02F2209/001 ,  C02F2209/005 ,  C02F2209/06 ,  C02F2209/08 ,  C02F2209/14 ,  C02F2209/22 ,  C02F2209/40 ,  C02F2209/44 ,  Y02W10/15

摘要： In a process for the treatment of wastewater containing carbonaceous and nitrogenous contaminants, wastewater is mixed with aerobic microorganisms capable of converting carbonaceous biological oxygen demand (CBOD) into carbon dioxide, water, and biological cell mass. Oxygen is supplied to the reaction mixture for supporting reduction of the CBOD by the aerobic microorganisms in the reaction mixture. To substantially prevent nitrification of the nitrogenous contaminants in the reaction mixture and avoid the cost of downstream denitrification, the hydraulic residence time of the nitrogenous contaminants in the reaction mixture is controlled by removing partially treated water with dissolved ammonia from the reaction mixture, while retaining the biological cell mass in the reaction mixture. This separates the nitrogen load from the carbon load and enables independent treatment of these contaminants. The ammonia is scrubbed from the partially treated water to create fully treated water which is disposed or returned to the reaction mixture.

摘要翻译： 在处理含碳和含氮污染物的废水的过程中，废水与能将碳质生物需氧量（CBOD）转化为二氧化碳，水和生物细胞块的需氧微生物混合。 将氧气供应到反应混合物中以支持反应混合物中需氧微生物还原CBOD。 为了基本上防止反应混合物中的含氮污染物的硝化并避免下游反硝化的成本，通过用溶解的氨从反应混合物中除去部分处理的水而控制含氮污染物在反应混合物中的水力停留时间，同时保留 反应混合物中的生物细胞团。 这将氮负荷与碳负荷分开，可以独立处理这些污染物。 从部分处理的水中洗涤氨以产生完全处理的水，其被设置或返回到反应混合物中。

公开(公告)号：US09494526B2

公开(公告)日：2016-11-15

申请号：US13713595

申请日：2012-12-13

申请人： Step Ahead Innovations, Inc.

发明人： James E. Clark

IPC分类号： F21V5/00 ,  G01N21/88 ,  G01N21/77 ,  C02F1/00 ,  G01N33/18 ,  G01N21/85 ,  G01N21/15 ,  F21V8/00 ,  G01N21/78 ,  G01N31/22 ,  A01K63/04 ,  G01N21/64

CPC分类号： G01N21/77 ,  A01K63/04 ,  C02F1/008 ,  C02F2103/42 ,  C02F2209/005 ,  C02F2209/006 ,  C02F2209/008 ,  C02F2209/06 ,  C02F2209/14 ,  C02F2209/15 ,  C02F2209/18 ,  G01N21/15 ,  G01N21/6428 ,  G01N21/78 ,  G01N21/8507 ,  G01N21/88 ,  G01N31/22 ,  G01N33/18 ,  G01N2021/758 ,  G01N2021/7786 ,  G01N2021/7793 ,  G01N2201/127 ,  G02B6/0001 ,  Y10S436/805 ,  Y10S436/809 ,  Y10T436/11 ,  Y10T436/115831 ,  Y10T436/12 ,  Y10T436/173076 ,  Y10T436/173845 ,  Y10T436/174614 ,  Y10T436/175383 ,  Y10T436/193333 ,  Y10T436/207497 ,  Y10T436/25 ,  Y10T436/25375

摘要： Combined illuminator/light collectors (I/LCs) that provide measurement and/or reference light to a target and collect light from the target. One example of a use for a combined I/LC of the present disclosure is for an optic of an optical reader used to read one or more chemical indicators that undergo physical changes that can be optically detected. The combined I/LC includes a spot lensing designed and configured in conjunction with the target to provide spot illumination on the target from one or more light sources. A light collector collects light from the target resulting from the spot illumination. Some embodiments further include dispersive lensing to direct a portion of the light from each light source away from the spot illumination to keep that light from interfering with the spot illumination.

摘要翻译： 组合的照明器/集光器（I / LC），其向目标提供测量和/或参考光并从目标收集光。 用于本公开的组合I / LC的一个示例是用于读取一个或多个经历可被光学检测的物理变化的化学指示剂的光学读取器的光学元件。 组合的I / LC包括与目标结合设计和配置的点透镜，以从一个或多个光源在目标上提供斑点照明。 光收集器从点光照射中收集来自目标的光。 一些实施例还包括色散透镜以将来自每个光源的光的一部分引导离开光点照明，以保持该光不影响光点照明。

公开(公告)号：US20160304370A1

公开(公告)日：2016-10-20

申请号：US15178921

申请日：2016-06-10

申请人： Jianmin Wang

发明人： Jianmin Wang

IPC分类号： C02F3/12 ,  B01F3/04 ,  C02F3/22 ,  C02F3/02 ,  C02F3/30

CPC分类号： C02F3/1284 ,  B01F3/04531 ,  B01F2003/04879 ,  B01F2003/04943 ,  B01F2215/0052 ,  C02F1/283 ,  C02F3/02 ,  C02F3/223 ,  C02F3/2893 ,  C02F3/301 ,  C02F3/302 ,  C02F3/303 ,  C02F3/308 ,  C02F2209/14 ,  C02F2209/22 ,  F17D1/00 ,  Y02W10/15

摘要： Described herein are methods and devices for treating water, wastewater, and organic wastes. The methods and devices are mixed by using hydraulic surge mixers. This surge mixer is driven by gas and can provide occasional surges of water using large bubbles which are able to move great volume of liquid while minimizing dissolved oxygen transfer to the surrounding liquid. Use of the devices and processes herein provides a simple, eloquent approach to water and wastewater treatment with less operation and maintenance costs than conventional devices and/or processes. The same surge lifting device can also be installed in other reactors to mix the tank content and enhance reaction with reduced energy use and maintenance needs.

摘要翻译： 本文描述了用于处理水，废水和有机废物的方法和装置。 该方法和装置通过使用液压浪涌混合器进行混合。 该浪涌混合器由气体驱动，并且可以使用能够移动大量液体同时使溶解氧转移到周围液体的大气泡产生偶尔的水浪涌。 这些装置和工艺的使用提供了一种简单而有力的方式来处理水和污水处理，其操作和维护成本比常规设备和/或工艺要少。 相同的浪涌提升装置也可以安装在其他反应器中，以混合罐内容物，并加强反应，减少能源的使用和维护需求。