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1. 发明授权

US11759833B2 Method and apparatus for pasteurization, hydrolysis and carbonization 有权
公开(公告)号：US11759833B2
公开(公告)日：2023-09-19
申请号：US17163844
申请日：2021-02-01
申请人： D.C. Water & Sewer Authority
发明人： Sudhir N. Murthy , Matthew Higgins , Haydee De Clippeleir , Bernhard Wett
IPC分类号： B09B3/40 , C02F1/02 , C02F11/10 , B09B3/00 , C02F11/18 , C02F11/12 , C02F11/04
CPC分类号： B09B3/00 , B09B3/40 , C02F1/025 , C02F11/04 , C02F11/10 , C02F11/12 , C02F11/18 , C02F11/185 , C02F2201/009 , C02F2209/09 , C02F2303/04 , C02F2303/10 , Y02W10/37
摘要： This invention proposes the use of Thermal Hydrolysis (or Thermal Carbonization) at different temperatures and pressures in alternate waste streams to achieve an optimal mix of high digestion rates and pasteurization rates while still achieving large viscosity reduction. In the disclosed embodiments means of combining Thermal Hydrolysis (or Thermal Carbonization) and Pasteurization including but not limited to placing the waste streams in parallel, placing them in series, utilizing heat input in parallel and heat exchangers in series are explored to optimize hydrolysis rates, minimize the use of high pressure tanks, optimize energy used, and manage viscosity characteristics of the solids.

2. 发明申请

US20160257590A1 METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER 审中-公开
标题翻译：用于最大限度地从废水中去除氮的方法和装置
公开(公告)号：US20160257590A1
公开(公告)日：2016-09-08
申请号：US15156968
申请日：2016-05-17
申请人： D.C. Water & Sewer Authority , Hampton Roads Sanitation District
发明人： Pusker Regmi , Mark Miller , Sudhir N. Murthy , Charles B. Bott
IPC分类号： C02F3/30 , C02F3/00
CPC分类号： C02F3/307 , C02F1/24 , C02F3/006 , C02F3/08 , C02F3/104 , C02F3/1257 , C02F3/1263 , C02F3/1268 , C02F3/301 , C02F2003/001 , C02F2101/16 , C02F2209/001 , C02F2209/005 , C02F2209/006 , C02F2209/10 , C02F2209/14 , C02F2209/15 , C02F2209/22 , C02F2209/44 , Y02W10/15
摘要： A reactor and control method for maximizing nitrogen removal and minimizing aeration requirements through control of transient anoxia and aerobic SRT, repression of NOB, and control of dynamic DO concentrations or aeration interval by keeping the reactor NH4 and NOx concentrations approximately equal. Controls are provided for maximizing the potential for TIN removal through nitrification, limited nitritation, nitritation, denitrification, limited denitritation, denitritation making use of 1) real time measurement of ammonia, nitrite, nitrate, 2) operational DO and the proper use of DO setpoints, and 3) proper implementation of transient anoxia within a wide range of reactor configurations and operating conditions.
摘要翻译：一种反应器和控制方法，通过控制反应器NH4和NOx浓度大致相等，通过控制瞬时缺氧和需氧SRT，抑制NOB以及控制动态DO浓度或通气间隔来最大限度地减少氮的排放和最小化通风要求。提供控制以最大化通过硝化，有限的氮化，氮化，脱氮，有限的脱硝，脱硝的TIN去除的潜力，使用1）实时测量氨，亚硝酸盐，硝酸盐，2）操作DO和正确使用DO设定点，和3）在广泛的反应堆配置和操作条件下适当实施瞬时缺氧。

3. 发明申请

US20160257587A1 METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT 审中-公开
标题翻译：在废水处理中氮去除的方法和装置
公开(公告)号：US20160257587A1
公开(公告)日：2016-09-08
申请号：US15155225
申请日：2016-05-16
申请人： D.C. Water & Sewer Authority , Hampton Roads Sanitation District
发明人： Bernhard Wett , Ahmed Omari , Pusker Regmi , Mark Miller , Charles B. Bott , Sudhir N. Murthy
IPC分类号： C02F3/00 , C02F3/34 , C02F3/30
CPC分类号： C02F3/006 , C02F3/303 , C02F3/305 , C02F3/307 , C02F3/34 , C02F3/348 , C02F2003/001 , C02F2101/16 , C02F2103/005 , C02F2209/14 , C02F2209/15 , C02F2209/22 , Y02W10/15
摘要： One or more reactor and one or more control methods are used for nitrogen removal in wastewater treatment to achieve measured control of maintaining high ammonia oxidizing bacteria (AOB) oxidation rates while achieving nitrite oxidizing bacteria (NOB) out-selection, using various control strategies, including: 1) ammonia and the use of ammonia setpoints; 2) operational DO and the use of DO setpoints; 3) bioaugmentation of anammox and lighter flocculant AOB fraction; and 4) implementation of transient anoxia in several reactor configurations and conditions for removal of oxidized nitrogen using anammox or heterotrophic organisms. Controls described maximize nitrogen removal with minimal aeration, through control of transient anoxia and aerobic SRT, out-selection of NOB, and control of DO concentrations or aeration interval by keeping the reactor ammonia (NH4) and oxidized nitrogen (NOx) concentrations approximately equal, and maximize total inorganic nitrogen (TIN) removal through nitrification, limited nitritation, nitritation, denitrification, denitritation or deammonification making use of the aforementioned strategies.
摘要翻译：使用一种或多种反应器和一种或多种控制方法用于废水处理中的氮去除，以实现使用各种控制策略实现亚硝酸盐氧化细菌（NOB）选择的同时维持高氨氧化细菌（AOB）氧化速率的测量控制，包括：1）氨和使用氨设定值; 2）操作DO和使用DO设定值; 3）厌氧和较轻的絮凝剂AOB馏分的生物增殖; 和4）在几种反应器配置和使用氨氧化或异养生物去除氧化氮的条件下实施短暂缺氧。通过控制短暂的缺氧和需氧的SRT，NOB的选择以及通过保持反应器氨（NH 4）和氧化的氮（NO x）浓度近似相等来控制DO浓度或通气间隔来最大限度地曝气，并利用上述策略，通过硝化，有限的氮化，氮化，脱硝，脱硝或去氨化，最大化无机氮（TIN）总量。

4. 发明授权

US12116297B2 Curing and inoculation of pasteurized digestate 有权
公开(公告)号：US12116297B2
公开(公告)日：2024-10-15
申请号：US16422232
申请日：2019-05-24
申请人： D.C. Water & Sewer Authority
发明人： William Brower , Christopher Peot , Ronald Alexander , Sudhir N. Murthy
IPC分类号： C02F11/16 , A01N63/10 , A01N63/20 , A01N63/50 , C02F11/02 , C05F7/00 , C05F11/08 , C05F11/10 , C05F17/921 , C05F17/993 , C02F11/13 , C02F11/131 , C02F11/18
CPC分类号： C02F11/16 , A01N63/10 , A01N63/20 , A01N63/50 , C02F11/02 , C05F7/00 , C05F11/08 , C05F11/10 , C05F17/939 , C05F17/993 , C02F11/13 , C02F11/131 , C02F11/185
摘要： A product, including digestate, that has been pasteurized through thermal hydrolysis, thermal alkaline hydrolysis, or thermal carbonization is cured to enhance its marketability. Variations of this disclosure include embodiments where pasteurized material is inoculated to further enhance marketability where the inoculation is performed by injecting a fungicide, other means of inoculation by injecting beneficial microorganisms to produce characteristics in digestate that are anti-fungal or produce suitable enzyme cofactors or nutrients to stabilize digestate, injections of vitamins to enhance the ability of plants grown using select digestate to thrive in adverse conditions, injection of chemicals to enhance the ability of digestate to retain heat and prevent freezing during wintry conditions, or any combination thereof. Other embodiments include using recycled waste heat generated from wastewater treatment or another process or solar energy for accelerating the drying process which occurs before, during or after curing.

5. 发明授权

US09346694B2 Method and apparatus for nitrogen removal in wastewater treatment 有权
标题翻译：废水处理除氮方法与装置
公开(公告)号：US09346694B2
公开(公告)日：2016-05-24
申请号：US14026569
申请日：2013-09-13
申请人： D.C. Water & Sewer Authority , Hampton Roads Sanitation District
发明人： Bernhard Wett , Ahmed Omari , Pusker Regmi , Mark Miller , Charles B. Bott , Sudhir N. Murthy
IPC分类号： C02F3/30 , C02F3/00 , C02F3/34
CPC分类号： C02F3/006 , C02F3/303 , C02F3/305 , C02F3/307 , C02F3/34 , C02F3/348 , C02F2003/001 , C02F2101/16 , C02F2103/005 , C02F2209/14 , C02F2209/15 , C02F2209/22 , Y02W10/15
摘要： One or more reactor and one or more control methods are used for nitrogen removal in wastewater treatment to achieve measured control of maintaining high ammonia oxidizing bacteria (AOB) oxidation rates while achieving nitrite oxidizing bacteria (NOB) out-selection, using various control strategies, including: 1) ammonia and the use of ammonia setpoints; 2) operational DO and the use of DO setpoints; 3) bioaugmentation of anammox and lighter flocculant AOB fraction; and 4) implementation of transient anoxia in several reactor configurations and conditions for removal of oxidized nitrogen using anammox or heterotrophic organisms. Controls described maximize nitrogen removal with minimal aeration, through control of transient anoxia and aerobic SRT, out-selection of NOB, and control of DO concentrations or aeration interval by keeping the reactor ammonia (NH4) and oxidized nitrogen (NOx) concentrations approximately equal, and maximize total inorganic nitrogen (TIN) removal through nitrification, limited nitritation, nitritation, denitrification, denitritation or deammonification making use of the aforementioned strategies.
摘要翻译：使用一种或多种反应器和一种或多种控制方法用于废水处理中的氮去除，以实现使用各种控制策略实现亚硝酸盐氧化细菌（NOB）选择的维持高氨氧化细菌（AOB）氧化速率的测量控制，包括：1）氨和使用氨设定值; 2）操作DO和使用DO设定值; 3）厌氧和较轻的絮凝剂AOB馏分的生物增殖; 和4）在几种反应器配置和使用氨氧化或异养生物去除氧化氮的条件下实施短暂缺氧。通过控制短暂的缺氧和需氧的SRT，NOB的选择以及通过保持反应器氨（NH 4）和氧化的氮（NO x）浓度近似相等来控制DO浓度或通气间隔来最大限度地曝气，并利用上述策略，通过硝化，有限的氮化，氮化，脱硝，脱硝或去氨化，最大化无机氮（TIN）总量。

6. 发明授权

US09802847B2 Method and apparatus for wastewater treatment using screens 有权
公开(公告)号：US09802847B2
公开(公告)日：2017-10-31
申请号：US14033686
申请日：2013-09-23
申请人： D.C. Water & Sewer Authority
发明人： Sudhir N. Murthy , Eugenio Giraldo , Norman D. Dockett , Walter F. Bailey
IPC分类号： C02F3/00 , C02F3/12 , B01D36/00 , C02F3/28 , C02F3/30
CPC分类号： C02F3/00 , B01D36/00 , C02F3/006 , C02F3/12 , C02F3/1205 , C02F3/1221 , C02F3/1226 , C02F3/1236 , C02F3/2866 , C02F3/307 , C02F2209/005 , C02F2209/10 , C02F2209/105 , C02F2303/24 , Y02E50/343 , Y02W10/15
摘要： An apparatus and method for selecting and retaining solids in an activated sludge process for the improving wastewater treatment using screens. The screens can be used to separate and retain solids based on size or compressibility. The screens are used to separate and select for slow growing organisms, faster settling organisms, or materials added to absorb, treat or remove constituents in the activated sludge process.

7. 发明授权

US09340439B2 Method and apparatus for nitrogen removal in wastewater treatment 有权
标题翻译：废水处理除氮方法与装置
公开(公告)号：US09340439B2
公开(公告)日：2016-05-17
申请号：US14026339
申请日：2013-09-13
申请人： D.C. Water & Sewer Authority , Hampton Roads Sanitation District
发明人： Bernhard Wett , Ahmed Omari , Pusker Regmi , Mark Miller , Charles B. Bott , Sudhir N. Murthy
IPC分类号： C02F3/30 , C02F3/00 , C02F3/34
CPC分类号： C02F3/305 , C02F3/006 , C02F3/303 , C02F3/307 , C02F3/34 , C02F3/348 , C02F2101/16 , C02F2209/14 , C02F2209/22
摘要： A reactor and control method thereof for nitrogen removal in wastewater treatment achieves a measured control of maintaining high ammonia oxidizing bacteria (AOB) oxidation rates while achieving nitrite oxidizing bacteria (NOB) repression, using various control strategies, including: 1) ammonia and the use of ammonia setpoints, 2) operational DO and the proper use of DO setpoints, 3) bioaugmentation of a lighter flocculant AOB fraction, and 4) proper implementation of transient anoxia within a wide range of reactor configurations and operating conditions.
摘要翻译：一种用于废水处理除氮的反应器及其控制方法，通过使用各种控制策略，实现了维持高氨氧化细菌（AOB）氧化速率同时达到亚硝酸盐氧化细菌（NOB）抑制的控制方法，包括：1）氨和使用的氨设定值，2）操作DO和正确使用DO设定值，3）较轻絮凝剂AOB馏分的生物增殖，以及4）在广泛的反应器配置和操作条件范围内适当实施瞬时缺氧。

8. 发明申请

US20140263041A1 METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER 有权
标题翻译：用于最大限度地从废水中去除氮的方法和装置
公开(公告)号：US20140263041A1
公开(公告)日：2014-09-18
申请号：US14210816
申请日：2014-03-14
申请人： Hampton Roads Sanitation District , D.C. Water & Sewer Authority
发明人： Pusker Regmi , Mark Miller , Sudhir N. Murthy , Charles B. Bott
IPC分类号： C02F3/00 , C02F3/30
CPC分类号： C02F3/307 , C02F1/24 , C02F3/006 , C02F3/08 , C02F3/104 , C02F3/1257 , C02F3/1263 , C02F3/1268 , C02F3/301 , C02F2003/001 , C02F2101/16 , C02F2209/001 , C02F2209/005 , C02F2209/006 , C02F2209/10 , C02F2209/14 , C02F2209/15 , C02F2209/22 , C02F2209/44 , Y02W10/15
摘要： A reactor and control method for maximizing nitrogen removal and minimizing aeration requirements through control of transient anoxia and aerobic SRT, repression of NOB, and control of dynamic DO concentrations or aeration interval by keeping the reactor NH4 and NOx concentrations approximately equal. Controls are provided for maximizing the potential for TIN removal through nitrification, limited nitritation, nitritation, denitrification, limited denitritation, denitritation making use of 1) real time measurement of ammonia, nitrite, nitrate, 2) operational DO and the proper use of DO setpoints, and 3) proper implementation of transient anoxia within a wide range of reactor configurations and operating conditions.
摘要翻译：一种反应器和控制方法，通过控制反应器NH4和NOx浓度大致相等，通过控制瞬时缺氧和需氧SRT，抑制NOB，以及控制动态DO浓度或通气间隔来最大限度地减少氮的排放和最小化通气要求。提供控制以最大化通过硝化，有限的氮化，氮化，脱氮，有限的脱硝，脱硝的TIN去除的潜力，使用1）实时测量氨，亚硝酸盐，硝酸盐，2）操作DO和正确使用DO设定点，和3）在广泛的反应堆配置和操作条件下适当实施瞬时缺氧。

9. 发明申请

US20140069863A1 METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT 有权
标题翻译：在废水处理中氮去除的方法和装置
公开(公告)号：US20140069863A1
公开(公告)日：2014-03-13
申请号：US14026339
申请日：2013-09-13
申请人： Hampton Roads Sanitation District , D.C. Water & Sewer Authority
发明人： Bernhard Wett , Ahmed Omari , Pusker Regmi , Mark Miller , Charles B. Bott , Sudhir N. Murthy
IPC分类号： C02F3/30
CPC分类号： C02F3/305 , C02F3/006 , C02F3/303 , C02F3/307 , C02F3/34 , C02F3/348 , C02F2101/16 , C02F2209/14 , C02F2209/22
摘要： A reactor and control method thereof for nitrogen removal in wastewater treatment achieves a measured control of maintaining high ammonia oxidizing bacteria (AOB) oxidation rates while achieving nitrite oxidizing bacteria (NOB) repression, using various control strategies, including: 1) ammonia and the use of ammonia setpoints, 2) operational DO and the proper use of DO setpoints, 3) bioaugmentation of a lighter flocculant AOB fraction, and 4) proper implementation of transient anoxia within a wide range of reactor configurations and operating conditions.
摘要翻译：一种用于废水处理除氮的反应器及其控制方法，通过使用各种控制策略，实现了维持高氨氧化细菌（AOB）氧化速率同时达到亚硝酸盐氧化细菌（NOB）抑制的控制方法，包括：1）氨和使用的氨设定值，2）操作DO和正确使用DO设定值，3）较轻絮凝剂AOB馏分的生物增殖，以及4）在广泛的反应器配置和操作条件范围内适当实施瞬时缺氧。

10. 发明授权

US10464832B2 Apparatus for water treatment using a physical separator 有权
公开(公告)号：US10464832B2
公开(公告)日：2019-11-05
申请号：US15090092
申请日：2016-04-04
申请人： D.C. Water & Sewer Authority
发明人： Sudhir N. Murthy , Bernhard Wett , Haydee Declippeleir
IPC分类号： C02F3/30 , C02F3/12 , C02F1/52
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.

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