Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C02F-003/30
C02F-001/28
C02F-003/00
C02F-003/12
C02F-003/28
출원번호
US-0274908
(2014-05-12)
등록번호
US-9359239
(2016-06-07)
발명자
/ 주소
Liu, Wenjun
Jordan, Edward John
Smith, George W.
출원인 / 주소
Evoqua Water Technologies LLC
인용정보
피인용 횟수 :
0인용 특허 :
208
초록▼
A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduc
A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduces oxygen demand of a portion of the sludge from the sorption tank.
대표청구항▼
1. A wastewater treatment system comprising: a first treatment unit comprising one of a biological sorption tank, an aerobic treatment tank, an anoxic treatment tank, and an anaerobic digester, the first treatment unit having a treatment unit inlet and a mixed liquor outlet;a first separator having
1. A wastewater treatment system comprising: a first treatment unit comprising one of a biological sorption tank, an aerobic treatment tank, an anoxic treatment tank, and an anaerobic digester, the first treatment unit having a treatment unit inlet and a mixed liquor outlet;a first separator having a first separator inlet in fluid communication with the mixed liquor outlet, a first solids-lean fluid outlet, and a first sludge outlet;an anaerobic digester having a digester inlet in fluid communication with the first sludge outlet, and a first digester outlet;a second separator having a second separator inlet in fluid communication with the first digester outlet, a second solids-lean fluid outlet, and a second sludge outlet, the second sludge outlet in fluid communication with the treatment unit inlet;a third separator fluidly connected downstream of the first sludge outlet and upstream of the digester inlet, and having a third solids-lean fluid outlet and a thickened sludge outlet, the first treatment unit, the first separator, and the third separator configured to produce a thickened sludge having a first concentration of a methanogenic bacteria, the anaerobic digester configured to produce a digested anaerobic sludge having a second concentration of the methanogenic bacteria, the first concentration being at least about 10% of the second concentration; anda precipitation vessel in fluid communication with the second solids-lean fluid outlet. 2. The system of claim 1, further comprising an aerobic treatment unit having an aerobic inlet in fluid communication with the first sludge outlet, a second digester outlet of the anaerobic digester, and with the third solids-lean fluid outlet, and having an aerobic outlet in fluid communication with the treatment unit inlet. 3. The system of claim 1, wherein the first concentration is at least about 25% of the second concentration. 4. The system of claim 3, wherein the first concentration is at least about 50% of the second concentration. 5. The system of claim 1, wherein the third separator contains a first consortium of bacteria with a concentration of methanogenic microorganisms that is a substantial fraction of a concentration of methanogenic microorganisms in a second consortium of bacteria contained in the anaerobic digester. 6. The system of claim 5, wherein the substantial fraction is at least about 10%. 7. The system of claim 6, wherein the substantial fraction is at least about 25%. 8. The system of claim 7, wherein the substantial fraction is at least about 50%. 9. A wastewater treatment system comprising: a first treatment unit comprising one of a biological sorption tank, an aerobic treatment tank, an anoxic treatment tank, an anaerobic digester, and a sequencing batch reactor, the first treatment unit having a treatment unit inlet and a mixed liquor outlet;a first separator having a first separator inlet in fluid communication with the mixed liquor outlet, a first solids-lean fluid outlet, and a first sludge outlet;an anaerobic digester distinct from the first treatment unit and having a digester inlet in fluid communication with the first sludge outlet, and a first digester outlet;an aerobic stabilization tank having a stabilization tank inlet in fluid communication with the first digester outlet though a conduit fluidly connecting the stabilization tank inlet and the first digester outlet, and a stabilization tank outlet in fluid communication with the treatment unit inlet through a conduit fluidly connecting the stabilization tank outlet and the treatment unit inlet;the system configured to directing a first fraction of a solids-rich sludge from the first sludge outlet into the digester inlet in an amount resulting in a concentration of methanogenic bacteria present in the solids-rich sludge being at least 10% of a concentration of methanogenic bacteria present in mixed liquor in the anaerobic digester. 10. The system of claim 9, further comprising a conduit fluidly connecting the first sludge outlet and a second inlet of the aerobic stabilization tank and configured to direct a second fraction of the solids-rich sludge from the first sludge outlet into the second inlet of the aerobic stabilization tank. 11. The system of claim 10, further comprising a sludge thickener fluidicly disposed between the first sludge outlet and the digester inlet and having a thickened sludge outlet configured to direct thickened sludge separated from the first fraction of the solids-rich sludge into the digester inlet and a solids-lean effluent outlet configured to direct a solids-lean effluent separated from the first fraction of the solids-rich sludge into the aerobic stabilization tank. 12. The system of claim 11, further including a second separator having a second separator inlet in fluid communication with a second digester outlet of the anaerobic digester, the second separator configured to separate anaerobically digested sludge from the anaerobic digester into a separated solids-lean fluid and a separated solids-rich sludge and to direct the separated solids-lean fluid to a separated solids-lean fluid outlet and to direct the separated solids-rich sludge to a separated solids-rich sludge outlet. 13. The system of claim 12, further comprising a precipitation vessel having a precipitation vessel inlet in fluid communication with the separated solids-lean fluid outlet of the second separator, the precipitation vessel configured to precipitate one of a nitrogen containing compound and a phosphorous containing compound from the separated solids-lean fluid. 14. The system of claim 12, wherein the separated solids-rich sludge outlet of the second separator is in fluid communication with the treatment unit inlet. 15. The system of claim 12, wherein the first solids-lean fluid outlet is in fluid communication with the second separator. 16. The system of claim 15, wherein the second separator is configured to wash precipitates and/or retained solids from the second separator with a solids-lean fluid from the first solids-lean fluid outlet. 17. The system of claim 16, wherein the second separator comprises a membrane filter and washing precipitates and/or retained solids from the second separator with the solids-lean fluid comprises backwashing a membrane of the membrane filter with the solids-lean fluid. 18. A wastewater treatment system comprising: a first treatment unit comprising one of a biological sorption tank, an aerobic treatment tank, an anoxic treatment tank, and an anaerobic digester, the first treatment unit having a treatment unit inlet and a mixed liquor outlet;a first separator having a first separator inlet in fluid communication with the mixed liquor outlet, a first solids-lean fluid outlet, and a first sludge outlet;an anaerobic digester having a digester inlet in fluid communication with the first sludge outlet, and a first digester outlet;a second separator having a second separator inlet in fluid communication with the first digester outlet, a second solids-lean fluid outlet, and a second sludge outlet, the second sludge outlet in fluid communication with the treatment unit inlet;a third separator fluidly connected downstream of the first sludge outlet and upstream of the digester inlet, the third separator containing a first consortium of bacteria with a concentration of methanogenic microorganisms that is a substantial fraction of a concentration of methanogenic microorganisms in a second consortium of bacteria contained in the anaerobic digester; anda precipitation vessel in fluid communication with the second solids-lean fluid outlet. 19. The system of claim 18, wherein the substantial fraction is at least about 10%. 20. The system of claim 19, wherein the substantial fraction is at least about 25%.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (208)
Li Alan Y. (Burr Ridge IL) Grutsch James F. (Hammond IN) O\Leary Kevin P. (Orland Hills IL), Activated sludge process with in situ recovery of powdered adsorbent.
Teran Alfredo J. ; Derrick ; Jr. John R. ; Samad Nidal A. ; Willoughby W. Todd ; Wood Richard G., Apparatus and method for purification of agricultural animal waste.
Teran Alfredo J. ; Derrick ; Jr. John R. ; Samad Nidal A. ; Willoughby W. Todd ; Wood Richard G., Apparatus and method for purification of agricultural animal waste.
Garcia, Paul G.; Davidson, Leonard; Russell, H. Matthew; Johnson, Martin Perry; Garcia, Paul F., Apparatus and method for wastewater treatment with enhanced solids reduction (ESR).
Garcia, Paul G.; Davidson, Leonard; Russell, H. Matthew; Johnson, Martin Perry; Garcia, Paul F., Apparatus and method for wastewater treatment with enhanced solids reduction (ESR).
Geldmacher Joachim (Heidnchelsweg 20 D-5223 Nmbrecht DEX), Apparatus for continuously separating solid and liquid fractions of a mixture of solid and liquid fractions.
Henry J. Glynn,CAXITX M3A 1X3 ; Prasad Durga,CAXITX M1B 1L8, Biological solubilization process for converting contaminated sludge into enriched biosolids.
Chen Michael S. (Macungie PA) Greskovich Eugene J. (Allentown PA) Spector Marshall L. (Allentown PA), Control of activated sludge wastewater treating process for enhanced phosphorous removal.
Thompson Worthington J. (109 Powell St. Snow Hill MD 21863), Controlled natural purification system for advanced wastewater treatment and protein conversion and recovery.
McEwen Stephen N. ; Creps Jay M. ; McEwen Scott M. ; Hallet Richard A. ; Benschoter Robert F. ; Benschoter Barry, Disc filter assembly for machine tool coolant.
Hong Sun-Nan (Cary NC) Nielsen Finn M. (Cary NC) Langslet O. Roy (Chapel Hill NC), Dual-stage biological process for removing nitrogen from wastewater.
Daigger Glen T. (Englewood CO) Borberg James R. (Virginia Beach VA) Morales Liliana M. (Reston VA), High-rate biological waste water treatment process using activated sludge recycle.
Yamasaki Kazuyuki,JPX ; Yokotani Atsushi,JPX ; Sakata Kazuyuki,JPX, Method and apparatus for organic wastewater treatment capable of preventing decrease in permeation efficiency of subme.
Daigger, Glen T.; Wollmann, Albert M.; Murthy, Sudhir N.; Fleischer, Edwin J.; Broderick, Thomas A., Method and apparatus for treating wastewater using membrane filters.
Oswald, William J.; Green, Franklin Bailey, Method and apparatus to establish and optimize sedimentation and methane fermentation in primary wastewater ponds.
Marsman Eric H. (Warnsveld NLX) Vlekke Garardus J. F. M. (Apeldoorn NLX) Urlings Leonardus G. C. M. (Hoevelaken NLX) Reitsma Berend A. H. (Deventer NLX), Method for the treatment of sewage.
Lefevre Fanny (Poissy FRX) Audic Jean-Marc (Conflans Sainte Honorine FRX), Method of Regulating Aeration in a basin for bilogical treatment of wastewater.
Coleman Thomas E. (Yakima WA) Denham W. Brent (Naches WA) Fleischman Darrel S. (Elmer City WA) Stensel H. David (8521 E. Mercer Way Mercer Island WA 98040), Oxidation ditch modification and automated control system for nitrogen removal and sludge settling improvements.
Levin Gilbert V. (Chevy Chase MD) Tarnay Alexandra G. (Fairfax VA) Topol ; deceased George J. (late of Montgomery County MD) BY Citizens Bank and Trust Company ; legal representative (Riverdale MD), Phosphate stripping of sewage.
Braha Alexandru (Frankenthal DEX) Daucher Hans (Ludwigshafen DEX) Hess Klaus (Bad Durkheim DEX) Kroetzsch Peter (Ketsch DEX) Merkel Helmut (Lampertheim DEX) Roedl Roland (Neustadt DEX) Schwaegerl Wal, Process and apparatus for the biological purification of sewage.
Liu Yanhua,CNX ; Yang Zaoyan,CNX, Process for biologically removing phosphorus and nitrogen from wastewater by controlling carbohydrate content therein.
Zagyvai Istvn (Budapest HUX) Gl Andrs (Budapest HUX) Mrai Jzsef (Sulzbach DEX) Szamosi Dniel (Bingen DEX), Process for dewatering municipal and other sewage sludges.
Phagoo, Deonarine; Coté, Pierre; Husain, Hidayat; Thompson, Doug; Ling, Baoqiang, Process for reducing concentrations of hair, trash, or fibrous materials, in a waste water treatment system.
Kamiya, Toshiyuki; Hirotsuji, Junji; Yasunaga, Nozomu; Furukawa, Seiji; Nakatsugawa, Naoki, Process for treating organic wastewater and apparatus for treating the organic wastewater.
Soeder Carl-Johannes (Dortmund DEX) Zanders Erich (Elsdorf DEX) Raphael Thomas (Dortmund DEX) Keusen Heiner (Juelich DEX) Groeneweg Joost (Kreuzau DEX), Waste water purification process with batchwise supply of waste water to the activated sludge tank.
Daigger Glen T. (Englewood CO) Stephenson Joseph P. (Kitchener CAX) Nolasco Daniel A. (Hamilton CAX) Stafford Dalton R. (Lethbridge CAX) Kaupp Douglas M. (Lethbridge CAX), Wastewater biological phosphorus removal process.
Nielson Niel E. (Mountain View CA) Kreiling Ronald L. (Danville CA) Hill Robert C. (Santa Clara CA) Nice Ralph A. (Burlingame CA), Wastewater treatment system including multiple stages of alternate aerobic-anerobic bioreactors in series.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.