公开(公告)号：US20180179092A1

公开(公告)日：2018-06-28

申请号：US15478842

申请日：2017-04-04

申请人： Hitachi, Ltd.

发明人： Shinichi YOSHIKAWA ,  Yuya KIMURA ,  Shoko MIYAMAE

IPC分类号： C02F3/30

CPC分类号： C02F3/307 ,  C02F2101/16 ,  C02F2209/02 ,  C02F2301/10 ,  C02F2303/10 ,  Y02E50/343 ,  Y02W10/30

摘要： Provided is a wastewater treatment apparatus and a wastewater treatment method, in which denitrification process by anaerobic ammonium oxidation method can be stably performed at low cost. The wastewater treatment apparatus includes an ammonium oxidation tank and a heating tank in which the microbial sludge withdrawn from the ammonium oxidation tank is subjected to heat treatment. A wastewater treatment method is to heat the microbial sludge withdrawn from the ammonium oxidation tank by using heat supplied from a digestion tank in which waste sludge is digested by anaerobic microorganisms or from a heat source for heating the waste sludge to be digested in the digestion tank, and to return the microbial sludge, in which activity of nitrite oxidizing bacteria is reduced by the heat treatment, to the ammonium oxidation tank, so that the ammonium nitrogen contained in the wastewater is oxidized to nitrite nitrogen.

公开(公告)号：US09981867B2

公开(公告)日：2018-05-29

申请号：US15629870

申请日：2017-06-22

申请人： JRL Innovations Inc.

发明人： Roy Emr

IPC分类号： C02F3/20 ,  C02F3/04 ,  C02F3/06 ,  C02F3/10 ,  C02F3/28

CPC分类号： C02F3/201 ,  C02F3/046 ,  C02F3/06 ,  C02F3/109 ,  C02F3/20 ,  C02F3/288 ,  C02F3/307 ,  C02F2203/006 ,  C02F2209/38 ,  C02F2303/20 ,  C02F2303/22 ,  Y02W10/15

摘要： The present invention provides an aeration lateral system designated to be site specific for new septic disposal areas or retro fitting to existing septic disposal areas to break up the biological clogging slug mat at the interface of the wastewater and imported sand or native soil fill under or adjacent to disposal areas of a typical septic system. The lateral system provides uniform or other site specific distribution of fluids about the bio-mat of a wastewater disposal area, with lateral spacing and hole spacing varying based on the type of disposal area being utilized. The lateral system can also be utilized to provide continuous low volume air supply system to a wastewater disposal area or peat filter module. The air lateral installation includes methods to minimize airflow disturbance of the soil and methods to prevent air leakage.

公开(公告)号：US20180009690A1

公开(公告)日：2018-01-11

申请号：US15203359

申请日：2016-07-06

申请人： John H. Reid

发明人： John H. Reid

IPC分类号： C02F3/30 ,  C02F101/10 ,  C02F103/00 ,  C02F101/16

CPC分类号： C02F3/308 ,  C02F3/121 ,  C02F3/302 ,  C02F3/307 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2101/163 ,  C02F2101/166 ,  C02F2103/001 ,  C02F2203/002 ,  Y02W10/15

摘要： A method of treating wastewater is disclosed in which a flow equalization reactor is provided that includes at least one wastewater treatment zone. A first wastewater treatment process is performed in the at least one wastewater treatment zone, which can be switched to a second wastewater treatment process. The flow equalization reactor is designed with a variable liquid depth and volume that can operated as a mixed wastewater zone, an anaerobic reactor zone, an anoxic reactor zone or an aerobic reactor zone. The equalization reactor provides sufficient variable liquid depth and volume above a minimum liquid depth and residual volume to provide the necessary hydraulic flow equalization or surge volume to achieve a relatively constant effluent pumping rate or feed forward flow rate over 24 hours per day, seven days per week into the downstream biological treatment processes, clarifiers, filters, or disinfection units, etc.

公开(公告)号：US09815723B2

公开(公告)日：2017-11-14

申请号：US14707700

申请日：2015-05-08

申请人： The Trustees of Princeton University

发明人： Peter R. Jaffe ,  Shan Huang

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

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：US09809474B2

公开(公告)日：2017-11-07

申请号：US14761639

申请日：2014-01-16

申请人： DEGREMONT

发明人： Laure Graveleau

IPC分类号： C02F3/00 ,  C02F3/30 ,  C02F3/02 ,  C02F3/26 ,  C02F3/12 ,  C02F101/16

CPC分类号： C02F3/02 ,  C02F3/006 ,  C02F3/12 ,  C02F3/1263 ,  C02F3/26 ,  C02F3/30 ,  C02F3/301 ,  C02F3/302 ,  C02F3/307 ,  C02F2101/16 ,  C02F2209/14 ,  C02F2209/15 ,  C02F2209/40 ,  C02F2209/42 ,  C02F2209/44 ,  Y02W10/15

摘要： Process for treating effluents containing nitrogen in ammonium form, using a sequential biological reactor (1), according to which: a volume of effluents to be treated in one complete cycle is introduced into the biological reactor in one or more successive fractions by volume, each fraction by volume being treated during a subcycle; each subcycle comprises a phase of feeding with a fraction by volume, and at least a first aerated step, during which total or partial oxidation of the ammonium to nitrites takes place by injection of air or of oxygen into the effluent, a settling out and emptying step taking place after the end of the complete cycle; the weight of N—NH4 to be treated is determined from the volume of effluents in the reactor at the end of the feeding phase, and from the difference between the initial N—NH4 concentration in the reactor and a concentration desired at the end of the aerated step, a maximum aeration time TM is dedicated to the aerated step, and an initial air flow rate Qairinit, for the beginning of the aerated step, is determined by taking into account the weight of N—NH4 to be treated and the maximum aeration time TM.

公开(公告)号：US09725346B2

公开(公告)日：2017-08-08

申请号：US14898340

申请日：2014-06-17

申请人： Evoqua Water Technologies LLC

发明人： Michael Casey Whittier ,  Timothy Lindemann ,  Nathan Antonneau

IPC分类号： C02F3/30

CPC分类号： C02F3/307 ,  C02F2203/004

摘要： A system and method of treating wastewater having at least one undesirable biological species is provided. In accordance with embodiments, a wastewater treatment system is provided comprising a main biological treatment train including at least one first unit operation configured to perform an anaerobic ammonium oxidation process, and at least one subsystem configured to increase a concentration of anammox bacteria in the at least one first unit operation, the treatment system arranged to reduce the concentration of total nitrogen in the wastewater.

公开(公告)号：US09670084B2

公开(公告)日：2017-06-06

申请号：US14198111

申请日：2014-03-05

申请人： LEADERMAN & ASSOCIATES CO., LTD. ,  NATIONAL CHIAO TUNG UNIVERSITY

发明人： Der-Ming Lee ,  Ming-Kuei Chiang ,  Chin-Te Chen ,  Keng-Chuan Sung ,  Chien-Ju Lan ,  Jih-Gaw Lin ,  Ying-Chang Liang

IPC分类号： C02F3/00 ,  C02F3/30 ,  C02F3/34 ,  C02F101/16 ,  C02F103/34 ,  C02F3/10 ,  C02F3/12 ,  C02F101/38

CPC分类号： C02F3/307 ,  C02F3/109 ,  C02F3/1263 ,  C02F3/301 ,  C02F3/341 ,  C02F3/348 ,  C02F2101/16 ,  C02F2101/38 ,  C02F2103/346 ,  C02F2209/06 ,  C02F2209/22 ,  C02F2301/08 ,  Y02W10/15

摘要： A method for treating wastewater containing TMAH and ammonium nitrogen includes the steps of (a) introducing a first solution which contains ammonium nitrogen but no TMAH into a single reactor with microorganisms comprising nitrifying bacteria and anammox bacteria, and denitrifying the first solution by the microorganisms under a dissolved oxygen concentration ranging from 0.1-0.5 mg/L and a pH value of 7-8; (b) when the denitrification efficiency reaches a steady state, introducing a second solution which contains ammonium nitrogen and TMAH and has a concentration of TMAH lower than 60 mg/L into the reactor; and (c) gradually increasing the concentration of TMAH in the solution to be added into the reactor for several times whenever the denitrification efficiency reaches a steady state. Accordingly, the inhibition of TMAH to the anammox bacteria can be significantly decreased, and both TMAH and the ammonium nitrogen can be treated simultaneously.

公开(公告)号：US09656897B2

公开(公告)日：2017-05-23

申请号：US14642369

申请日：2015-03-09

申请人： John H. Reid

发明人： John H. Reid

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

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 activated sludge (AS) system that includes a flow equalization basin (FEB) reactor and a nitritation reactor as the first AS stage and an anammox reactor as the second AS stage. A first return activated sludge (RAS) flow is conducted from the final clarifier to the first AS stage with a low flow rate and a second segregated RAS flow is conducted to the second AS stage with a high flow rate. The FEB reactor is operated as an anoxic reactor to achieve carbonaceous BOD removal; conversion of organic nitrogen to ammonia nitrogen; and, denitrification of recycled nitrite or nitrate nitrogen. The nitritation reactor is operated as an aerobic reactor to achieve oxidation of ammonia nitrogen to nitrite nitrogen by biological nitritation. The anammox reactor is operated at zero or very low dissolved oxygen concentration to achieve nitrogen removal by deammonification.

公开(公告)号：US09567248B2

公开(公告)日：2017-02-14

申请号：US14593508

申请日：2015-01-09

申请人： John H. Reid

发明人： John H. Reid

IPC分类号： C02F3/30

CPC分类号： C02F3/305 ,  C02F1/722 ,  C02F1/76 ,  C02F3/006 ,  C02F3/1215 ,  C02F3/14 ,  C02F3/307 ,  C02F2209/001 ,  C02F2209/02 ,  C02F2209/08 ,  C02F2209/14 ,  C02F2209/22 ,  C02F2209/40 ,  C02F2209/44 ,  C02F2305/06 ,  Y02W10/15

摘要： A flow equalization reactor for a multi-stage activated sludge process for treating industrial wastewater and/or municipal sewage is divided into two or more treatment zones. An outflow from a first treatment zone is mixed with an outflow from the second treatment zone in a mixer and conveyed to a third stage reactor containing anaerobic, autotrophic ammonia oxidizing anammox bacteria for converting nitrite nitrogen to nitrogen gas. The relative amounts of the outflows from the first and second treatment zones are controlled to promote and optimize the growth and accumulation of the anammox biomass in the third stage reactor.

摘要翻译： 用于处理工业废水和/或城市污水的多级活性污泥法的流量均衡反应器被分为两个或更多个处理区。 将来自第一处理区的流出物与来自混合器中的第二处理区的流出物混合并输送到含有厌氧自养氨氧化厌氧菌的第三阶段反应器，以将亚硝酸盐氮转化为氮气。 控制来自第一处理区和第二处理区的流出物的相对量，以促进和优化第三阶段反应器中厌氧生物质的生长和积累。

公开(公告)号：US20160272522A1

公开(公告)日：2016-09-22

申请号：US15168527

申请日：2016-05-31

申请人： JRL Innovations Inc.

发明人： Roy Emr

IPC分类号： C02F3/20

CPC分类号： C02F3/201 ,  C02F3/046 ,  C02F3/06 ,  C02F3/109 ,  C02F3/20 ,  C02F3/288 ,  C02F3/307 ,  C02F2203/006 ,  C02F2209/38 ,  C02F2303/20 ,  C02F2303/22 ,  Y02W10/15

摘要： The present invention provides an aeration lateral system designated to be site specific for new septic disposal areas or retro fitting to existing septic disposal areas to break up the biological clogging slug mat at the interface of the wastewater and imported sand or native soil fill under or adjacent to disposal areas of a typical septic system. The lateral system provides uniform or other site specific distribution of fluids about the bio-mat of a wastewater disposal area, with lateral spacing and hole spacing varying based on the type of disposal area being utilized. The lateral system can also be utilized to provide continuous low volume air supply system to a wastewater disposal area or peat filter module. The air lateral installation includes methods to minimize airflow disturbance of the soil and methods to prevent air leakage.

摘要翻译： 本发明提供了一种曝气横向系统，被指定为对新的化粪池处置区域具有特异性的位置，或者与现有的化粪池处理区域进行复原配合，以便在废水和进口砂土或相邻的土壤填充物的界面处分解生物堵塞块 处理典型的化粪池系统。 横向系统提供流体围绕废水处理区域的生物垫的均匀或其它场地特异性分布，其横向间距和孔间距根据所使用的处理区域的类型而变化。 横向系统还可以用于向废水处理区域或泥炭过滤器模块提供连续的低体积空气供应系统。 空气横向安装包括最小化土壤气流干扰的方法和防止空气泄漏的方法。