Tidal vertical flow wastewater treatment system and method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C02F-003/32
C02F-003/02
출원번호
US-0740983
(2007-04-27)
등록번호
US-7378021
(2008-05-27)
발명자
/ 주소
Austin,David C.
Lohan,Eric
출원인 / 주소
Worrell Water Technologies, LLC
대리인 / 주소
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
인용정보
피인용 횟수 :
2인용 특허 :
80
초록▼
A wastewater treatment system includes a tidal, sequential vertical flow marsh cell system having at least three marsh cells in serial forward fluid communication. Incoming wastewater to be treated is channeled to at least the first and a second marsh cell, and a portion of water exiting a final mar
A wastewater treatment system includes a tidal, sequential vertical flow marsh cell system having at least three marsh cells in serial forward fluid communication. Incoming wastewater to be treated is channeled to at least the first and a second marsh cell, and a portion of water exiting a final marsh cell, to the first marsh cell surface. Each marsh cell is alternately flooded and drained for enhancing aeration of incoming water and marsh cell contents, which include media and plant roots having biofilms growing thereon, the biofilms including a population of nitrifying and denitrifying bacteria, for achieving substantially simultaneous nitrification and denitrification of the wastewater.
대표청구항▼
What is claimed is: 1. A wastewater treatment system comprising: a first, a second, and a third vertical flow marsh cell, each having an outlet adjacent a bottom thereof, each marsh cell adapted to contain particulate media and plants having roots extendible into the media, so that the roots and th
What is claimed is: 1. A wastewater treatment system comprising: a first, a second, and a third vertical flow marsh cell, each having an outlet adjacent a bottom thereof, each marsh cell adapted to contain particulate media and plants having roots extendible into the media, so that the roots and the media are positioned to contact water flowing into each marsh cell; means for transporting water to be treated to a surface of the first and the second marsh cell, from the first marsh cell outlet to the second marsh cell surface, from the second marsh cell outlet to a surface of the third marsh cell, and from the third marsh cell outlet to a discharge outlet; and means for substantially emptying each marsh cell on a predetermined cycle for a predetermined time, for permitting aeration of contents of each marsh cell. 2. The system recited in claim 1, wherein the first, the second, and the third marsh cell each comprises: a basin having a hole adjacent a bottom thereof, the hole comprising the marsh cell outlet; a drain collection trough positioned beneath the hole for collecting water exiting therefrom; and wherein the means for transporting water from the respective first, second, and third marsh cell outlet comprise respective first, second, and third sumps and first, second, and third pumps positioned within the respective first, second, and third sumps. 3. The system recited in claim 2, wherein each of the first, the second, and the third marsh cells is further adapted to contain a mat positionable above particulate media therein, the mat adapted for permitting plants to root therein. 4. The system recited in claim 3, wherein the mat comprises a pre-grown mat of wetland plants. 5. The system recited in claim 2, wherein the water transporting means further comprises piping for distributing water at a unitary point of the respective first, second, and third marsh cell surface. 6. The system recited in claim 2, wherein the first and the second marsh cell is each adapted to maintain at least one of a population of aquatic invertebrates and a population of detritivores. 7. The system recited in claim 1, wherein the means for transporting incoming water comprises means for transporting water substantially equally between the first and the second marsh cell. 8. The system recited in claim 1, wherein the predetermined cycle comprises a cycle in the range of 1 to 20 times per day. 9. The system recited in claim 1, further comprising means for diluting water entering at least the first marsh cell. 10. A wastewater treatment system comprising: a first, a second, a third, a fourth, and a fifth vertical flow marsh cell, each having an outlet adjacent a bottom thereof, each marsh cell adapted to contain particulate media and plants having roots extendible into the media, so that the roots and the media are positioned to contact water flowing into each marsh cell; means for transporting incoming water to be treated to a surface of the first, the second, and the third marsh cell, from the first marsh cell outlet to the second marsh cell surface, from the second marsh cell outlet to the third marsh cell surface, from the third marsh cell outlet to the fourth marsh cell surface, from the fourth marsh cell outlet to the fifth marsh cell surface, and from the fifth marsh cell outlet to a discharge outlet; and means for substantially emptying each marsh cell on a predetermined cycle for a predetermined time, for permitting aeration of contents of each marsh cell. 11. The system recited in claim 10, wherein the means for transporting incoming water comprises means for transporting water substantially equally among the first, the second, and the third marsh cell. 12. The system recited in claim 10, further comprising: a sixth vertical flow marsh cell having a surface, an outlet adjacent a bottom thereof, particulate media, and plants having roots extendible into the media, the roots and the media positioned to contact water flowing into the sixth marsh cell, the sixth marsh cell positioned downstream of the fourth marsh cell and upstream of the fifth marsh cell; and wherein the transporting means comprises means for transporting water from the fourth marsh cell outlet to the sixth marsh cell surface and from the sixth marsh cell outlet to the fifth marsh cell surface. 13. The system recited in claim 10, further comprising means for diluting water entering at least the first marsh cell. 14. A wastewater treatment system comprising: a first, a second, a third, a fourth, and a fifth vertical flow marsh cell, each having an outlet adjacent a bottom thereof, each marsh cell adapted to contain particulate media and plants having roots extendible into the media, so that the roots and the media are positioned to contact water flowing into each marsh cell; means for transporting incoming water to be treated to a surface of a plurality of the first through the fourth marsh cells, from the first marsh cell outlet to the second marsh cell surface, from the second marsh cell outlet to the third marsh cell surface, from the third marsh cell outlet to the fourth marsh cell surface, from the fourth marsh cell outlet to the fifth marsh cell surface, and from the fifth marsh cell outlet to a discharge outlet; and means for substantially emptying each marsh cell on a predetermined cycle for a predetermined time, for permitting aeration of contents of each marsh cell. 15. The system recited in claim 14, further comprising means for diluting water entering at least the first marsh cell.
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