Long term monitoring of constructed wetlands using an NMR sensor

Robert H. Morris; Michael I. Newton; Martin Bencsik; Paul R. Knowles; Philip A. Davies; Paul Griffin

doi:10.1109/ICSENS.2009.5398486

Long term monitoring of constructed wetlands using an NMR sensor

Robert H. Morris, Michael I. Newton, Martin Bencsik, Paul R. Knowles, Philip A. Davies, Paul Griffin

Research output: Chapter in Book/Published conference output › Conference publication

Abstract

Subsurface flow wetlands have become a popular technology for the treatment of waste water all over the world. These systems become clogged over time, and must be renovated at great expense. We present a nuclear magnetic resonance sensor which is sufficiently small and inexpensive that several of them could be embedded in a constructed wetland to allow spatially resolved long term continual monitoring of the clogging process. We demonstrate the suitability of this sensor by first measuring NMR of sludge from an operational wetland, and secondly by monitoring the evolution of the fluid's NMR spin lattice relaxation time (T₁) during clogging in a model wetland. Measurement of clogging rates in two locations are made and found to be 10.7x10-2min-1 and 4.9x10-3min-1 for regions near the inlet and the centre respectively.

Original language	English
Title of host publication	Proceedings of 2009 IEEE Sensors
Publisher	IEEE
Pages	1733-1737
Number of pages	5
ISBN (Print)	9781424445486
DOIs	https://doi.org/10.1109/ICSENS.2009.5398486
Publication status	Published - 1 Dec 2009
Event	IEEE Sensors 2009 Conference - SENSORS 2009 - Christchurch, United Kingdom Duration: 25 Oct 2009 → 28 Oct 2009

Conference

Conference	IEEE Sensors 2009 Conference - SENSORS 2009
Country/Territory	United Kingdom
City	Christchurch
Period	25/10/09 → 28/10/09

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10.1109/ICSENS.2009.5398486

Cite this

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title = "Long term monitoring of constructed wetlands using an NMR sensor",

abstract = "Subsurface flow wetlands have become a popular technology for the treatment of waste water all over the world. These systems become clogged over time, and must be renovated at great expense. We present a nuclear magnetic resonance sensor which is sufficiently small and inexpensive that several of them could be embedded in a constructed wetland to allow spatially resolved long term continual monitoring of the clogging process. We demonstrate the suitability of this sensor by first measuring NMR of sludge from an operational wetland, and secondly by monitoring the evolution of the fluid's NMR spin lattice relaxation time (T1) during clogging in a model wetland. Measurement of clogging rates in two locations are made and found to be 10.7x10-2min-1 and 4.9x10-3min-1 for regions near the inlet and the centre respectively.",

author = "Morris, {Robert H.} and Newton, {Michael I.} and Martin Bencsik and Knowles, {Paul R.} and Davies, {Philip A.} and Paul Griffin",

year = "2009",

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doi = "10.1109/ICSENS.2009.5398486",

language = "English",

isbn = "9781424445486",

pages = "1733--1737",

booktitle = "Proceedings of 2009 IEEE Sensors",

publisher = "IEEE",

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note = "IEEE Sensors 2009 Conference - SENSORS 2009 ; Conference date: 25-10-2009 Through 28-10-2009",

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TY - GEN

T1 - Long term monitoring of constructed wetlands using an NMR sensor

AU - Morris, Robert H.

AU - Newton, Michael I.

AU - Bencsik, Martin

AU - Knowles, Paul R.

AU - Davies, Philip A.

AU - Griffin, Paul

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Subsurface flow wetlands have become a popular technology for the treatment of waste water all over the world. These systems become clogged over time, and must be renovated at great expense. We present a nuclear magnetic resonance sensor which is sufficiently small and inexpensive that several of them could be embedded in a constructed wetland to allow spatially resolved long term continual monitoring of the clogging process. We demonstrate the suitability of this sensor by first measuring NMR of sludge from an operational wetland, and secondly by monitoring the evolution of the fluid's NMR spin lattice relaxation time (T1) during clogging in a model wetland. Measurement of clogging rates in two locations are made and found to be 10.7x10-2min-1 and 4.9x10-3min-1 for regions near the inlet and the centre respectively.

AB - Subsurface flow wetlands have become a popular technology for the treatment of waste water all over the world. These systems become clogged over time, and must be renovated at great expense. We present a nuclear magnetic resonance sensor which is sufficiently small and inexpensive that several of them could be embedded in a constructed wetland to allow spatially resolved long term continual monitoring of the clogging process. We demonstrate the suitability of this sensor by first measuring NMR of sludge from an operational wetland, and secondly by monitoring the evolution of the fluid's NMR spin lattice relaxation time (T1) during clogging in a model wetland. Measurement of clogging rates in two locations are made and found to be 10.7x10-2min-1 and 4.9x10-3min-1 for regions near the inlet and the centre respectively.

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T2 - IEEE Sensors 2009 Conference - SENSORS 2009

Y2 - 25 October 2009 through 28 October 2009

ER -

Long term monitoring of constructed wetlands using an NMR sensor

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