[특허]Systems and methods for wastewater treatment

Systems and methods for wastewater treatment 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01F-003/04 C02F-003/12 C02F-001/44 C02F-001/78 C02F-003/26 C02F-003/30 C02F-003/24
출원번호	US-0415539 (2012-03-08)
등록번호	US-9315402 (2016-04-19)
발명자 / 주소	Osborn, Gregory Scott Thompson, Clay R. Matlock, Marty D.
출원인 / 주소	Board of Trustees of the University of Arkansas
대리인 / 주소	Glasgow, Richard Blakely
인용정보	피인용 횟수 : 0 인용 특허 : 70

초록 ▼

Disclosed is a system and method for treating wastewater. The system includes a bioreactor which defines a basin for receiving wastewater to be treated; a membrane module in fluid communication with the bioreactor; and a dissolution tank. The tank includes a pressure vessel that contains a portion of the wastewater to be treated and provides a regulated, pressurized gas head space above the wastewater. The tank also includes at least one liquid spray nozzle that permits passage of the wastewater into the gas head space of the pressure vessel and an outlet for discharging the wastewater having a desired gas concentration from the pressure vessel. The system also includes a pumping mechanism for supplying the wastewater to the spray nozzle of the tank such that fluid droplets are formed in the gas head space and the gas contained within the pressurized head space is dissolved into the wastewater.

대표청구항 ▼

1. A system for treating wastewater comprising: (a) a bioreactor which defines a basin configured to receive untreated wastewater to be treated;(b) a membrane module in fluid communication with the bioreactor;(c) a dissolution tank comprising: (i) a pressure vessel configured to contain treated wastewater and to provide a gas head space comprising at least one gas above the treated wastewater;(ii) at least one liquid spray nozzle configured to pass the untreated wastewater from the bioreactor into the gas head space under conditions effective to dissolve the gas in the untreated wastewater; and(iii) an outlet configured to discharge the treated wastewater from the pressure vessel into the bioreactor or the membrane module; and(d) a gas source in communication with the dissolution tank. 2. The system for treating wastewater as recited in claim 1, wherein the membrane module is positioned within the basin of the bioreactor. 3. The system for treating wastewater as recited in claim 1, wherein the membrane module is positioned exterior to the basin of the bioreactor, and the treated wastewater is withdrawn from the basin and is provided to the membrane module using a vacuum pump. 4. The system for treating wastewater as recited in claim 1, further comprising a level sensor for detecting the level of the treated wastewater in the pressure vessel and a control system for adjusting the level of the treated wastewater in the pressure vessel in order to achieve the desired dissolved gas concentration within the treated wastewater in the bioreactor. 5. A system for treating wastewater as recited in claim 1, further comprising a pump for supplying the untreated wastewater to the spray nozzle of the dissolution tank. 6. The system for treating wastewater as recited in claim 5, wherein said pump is a mechanical device. 7. The system for treating wastewater as recited in claim 1, wherein the at least one gas of the gas head space is selected from the group consisting of air, oxygen, ozone, hydrogen, nitrogen, nitrous oxide, and carbon dioxide. 8. The system for treating wastewater as recited in claim 1, wherein said gas source is an oxygen generator. 9. A method of treating wastewater comprising: (a) pressurizing a pressure vessel with at least one gas;(b) pumping untreated wastewater from a bioreactor to the pressure vessel;(c) spraying the untreated wastewater into the vessel containing the gas under conditions effective to dissolve the gas in the untreated wastewater to produce treated wastewater; and(d) discharging the treated wastewater from said vessel into the bioreactor or a membrane module. 10. The method of treating wastewater as recited in claim 9, wherein the bioreactor comprises a basin for receiving treated and untreated wastewater. 11. The method of treating wastewater as recited in claim 10, wherein the membrane module is positioned within the basin of the bioreactor. 12. The method of treating wastewater as recited in claim 10, wherein the membrane module is positioned exterior to the basin of the bioreactor. 13. The method for treating wastewater as recited in claim 9, wherein the at least one gas is selected from the group consisting of air, oxygen, ozone, hydrogen, nitrogen, nitrous oxide, and carbon dioxide. 14. The system for treating wastewater as recited in claim 1, wherein said dissolution tank is configured to produce anaerobic conditions in the bioreactor. 15. The system for treating wastewater as recited in claim 1, wherein said dissolution tank is configured to produce aerobic conditions in the bioreactor. 16. The system for treating wastewater as recited in claim 1, further comprising an orifice tube configured to eject treated wastewater on the membrane module. 17. The method of treating wastewater as recited in claim 9, further comprising the step of controlling a dissolved oxygen concentration in the bioreactor for nitrification and denitrification in the bioreactor. 18. The method of treating wastewater as recited in claim 9, further comprising the step of ejecting treated wastewater from an orifice tube to clean said membrane module.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Systems and methods for wastewater treatment 원문보기

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Systems and methods for wastewater treatment 원문보기

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