IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0087089
(2005-03-22)
|
발명자
/ 주소 |
- Austin,David C.
- Lohan,Eric
|
출원인 / 주소 |
- Dharma Living Systems, Inc.
|
대리인 / 주소 |
Allen, Dyer, Doppelt, Milbrath &
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
84 |
초록
▼
A wastewater treatment system includes a first lagoon having an inlet for receiving wastewater to be treated and a first vertical flow marsh cell having a bottom outlet. Water can be transported from the first lagoon to the first marsh cell. A second lagoon has an inlet for receiving water from the
A wastewater treatment system includes a first lagoon having an inlet for receiving wastewater to be treated and a first vertical flow marsh cell having a bottom outlet. Water can be transported from the first lagoon to the first marsh cell. A second lagoon has an inlet for receiving water from the first marsh cell outlet and a second vertical flow marsh cell having a bottom outlet. Water can be transported from the second lagoon to the second marsh cell. At least a portion of the water exiting the second marsh cell outlet can be recycled to the first lagoon. The first and the second lagoon are adapted to function essentially aerobically and to contain plants having roots positioned to contact water flowing thereinto. The first and the second marsh cell are adapted to contain plants having roots positioned to contact water flowing thereinto.
대표청구항
▼
What is claimed is: 1. A wastewater treatment system comprising: a first and a second substantially aerobic lagoon, each adapted to contain aquatic plants; a first and a second marsh cell, each adapted to contain particulate media and plants so that the plants can grow on a surface of the media, so
What is claimed is: 1. A wastewater treatment system comprising: a first and a second substantially aerobic lagoon, each adapted to contain aquatic plants; a first and a second marsh cell, each adapted to contain particulate media and plants so that the plants can grow on a surface of the media, so that roots of the plants can grow to extend into the media; means for transporting wastewater to be treated to the first lagoon, from the first lagoon after a first time period of retention within the first lagoon to the first marsh cell, from the first marsh cell to the second lagoon, and from the second lagoon after a second time period of retention within the second lagoon to the second marsh cell. 2. The system recited in claim 1, further comprising means for channeling a portion of water emerging from a bottom of the second marsh cell to the first lagoon, for achieving process recycle. 3. The system recited in claim 2, wherein the channeling means comprises a pump station positioned to receive water exiting the second marsh cell, the pump station comprising a basin and a pump in fluid communication. 4. The system recited in claim 1, wherein the water-transporting means from the first marsh cell to the second lagoon comprises gravity feed, thereby effecting passive forward flow. 5. The system recited in claim 4, wherein a bottom of the first marsh cell is higher than a bottom of the second lagoon. 6. The system recited in claim 5, wherein the second lagoon has a bottom portion having a top surface level defined by a height of a bottom of the first marsh cell, the bottom portion having a volume sufficiently large to contain water sufficient to substantially drain the first marsh cell via gravity feed. 7. The system recited in claim 6, wherein the second period of retention is sufficient to permit aeration of the plant roots and the media in the first marsh cell. 8. The system recited in claim 1, wherein the means for transporting wastewater to be treated to the first lagoon further comprises means for dividing the water to be treated into two flow paths, a first flow path leading to the first lagoon and a second flow path leading to the second lagoon. 9. The system recited in claim 1, wherein the transporting means all function to channel water from adjacent a bottom of the first and the second lagoons and the first and the second marsh cells, to a surface of the first and the second marsh cells and to a locations in spaced relation from a bottom of the first and the second lagoons, respectively. 10. The system recited in claim 1, wherein the first and the second marsh cells are positioned to receive overflow from the first and the second lagoon, respectively, if an overflow occurs. 11. The system recited in claim 1, wherein the means for transporting water from the second marsh cell outlet to the first lagoon inlet is adapted to recycle a water portion in a range of 50 to 1000% of a volume of incoming wastewater entering the system per unit time. 12. A method for treating wastewater comprising the steps of: subjecting wastewater to be treated to a first substantially aerobic environment for a first time period; transporting water from the first aerobic environment to a surface of a first substantially aerobic/anoxic environment containing plants having roots for a second time period; transporting water emerging from beneath the plant roots of the first aerobic/anoxic environment to a second substantially aerobic environment for a third time period; transporting water from the second aerobic environment to a surface of a second substantially aerobic/anoxic environment containing plants having roots for a fourth time period; and recycling at least a portion of the water emerging from beneath the plant roots of the second aerobic/anoxic environment to the first substantially aerobic environment. 13. A method of treating wastewater comprising the steps of: transporting wastewater to be treated to the first substantially aerobic lagoon containing aquatic plants; transporting water from the first lagoon after a first time period of retention within the first lagoon to a first marsh cell containing particulate media and plants growing on a top surface of the media, so that roots of the plants can grow to extend into the media; transporting water from the first marsh cell to a second substantially aerobic second lagoon; and transporting water from the second lagoon after a second time period of retention within the second lagoon to a second marsh cell containing particulate media and plants growing on a top surface of the media, so that roots of the plants can grow to extend into the media. 14. The method recited in claim 13, further comprising the step of channeling a portion of water emerging from a bottom of the second marsh cell to the first lagoon, for achieving process recycle. 15. The method recited in claim 14, wherein the channeling step comprises transferring water exiting the second marsh cell to a pump station, and pumping water from the pump station to the first lagoon. 16. The method recited in claim 13, wherein the water-transporting step from the first marsh cell to the second lagoon comprises permitting gravity feed, thereby effecting passive forward flow. 17. The method recited in claim 16, wherein a bottom of the first marsh cell is higher than a bottom of the second lagoon. 18. The method recited in claim 17, wherein the second lagoon has a bottom portion having a top surface level defined by a height of a bottom of the first marsh cell, the bottom portion having a volume sufficiently large to contain water sufficient to substantially drain the first marsh cell via gravity feed. 19. The method recited in claim 18, wherein the second period of retention is sufficient to permit aeration of the plant roots and the media in the first marsh cell. 20. The method recited in claim 13, wherein the step of transporting wastewater to be treated to the first lagoon further comprises dividing the water to be treated into two flow paths, a first flow path leading to the first lagoon and a second flow path leading to the second lagoon. 21. The method recited in claim 13, wherein the transporting steps all function to channel water from adjacent a bottom of the first and the second lagoons and the first and the second marsh cells, to a surface of the first and the second marsh cells and to a locations in spaced relation from a bottom of the first and the second lagoons, respectively. 22. The method recited in claim 13, wherein the first and the second marsh cells are positioned to receive overflow from the first and the second lagoon, respectively, if an overflow occurs. 23. The method recited in claim 13, wherein the step of transporting water from the second marsh cell outlet to the first lagoon inlet achieves a recycling of a water portion in a range of 50 to 1000% of a volume of incoming wastewater entering the system per unit time.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.