Analysis of clogging in constructed wetlands using magnetic resonance


In this work we demonstrate the potential of permanent magnet based magnetic resonance sensors to monitor and assess the extent of pore clogging in water filtration systems. The performance of the sensor was tested on artificially clogged gravel substrates and on gravel bed samples from constructed wetlands used to treat wastewater. Data indicate that the spin lattice relaxation time is linearly related to the hydraulic conductivity in such systems. In addition, within biologically active filters we demonstrate the ability to determine the relative ratio of biomass to abiotic solids, a measurement which is not possible using alternative techniques.

Publication DOI:
Divisions: Engineering & Applied Sciences > Mechanical Engineering & Design
Engineering & Applied Sciences > Sustainable environment research group
Uncontrolled Keywords: Analytical Chemistry,Spectroscopy,Electrochemistry,Biochemistry,Environmental Chemistry
Full Text Link: http://irep.ntu ... 20Postprint.pdf
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://pubs.rsc ... 6e#!divAbstract (Publisher URL)
Published Date: 2011-06-07
Authors: Morris, Robert H.
Newton, Michael I.
Knowles, Paul R.
Bencsik, Martin
Davies, Philip A. ( 0000-0003-4783-1234)
Griffin, Paul
McHale, Glen

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