Accelerating pollutant release from mud bed by sand drains

C. J. Lai, J. M. Leu, H. C. Chan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is proposed to use sand drain systems in a channel mud bed to accelerate the pollutants release rate of the mud bed, based on the fact that the hydraulic conductivity of mud in the horizontal is usually larger than that of the vertical. Experiments are conducted in model channel bed system to assess this concept. This model is filled with various mud depths and has different sand drain arrangements. Ammonium nitrogen (NH4-N) and dissolved oxygen (DO) concentrations at the water body adjacent to the mud surface are measured. Experimental results show that the ammonium nitrogen concentration increases with the test time. It's release rate increases with intensity of the sand drains. Deployment of a sand drain system is proved to be useful in accelerating the releasing of mud- trapped pollutant.

Original languageEnglish
Title of host publicationBrownfield Sites
Subtitle of host publicationAssessment, Rehabilitation and Development
EditorsC.A. Brebbia, D. Almorza, H. Klapperich
PublisherWIT Press
Pages507-514
Number of pages8
ISBN (Print)1853129186
Publication statusPublished - 2002 Dec 1
EventFirst International Conference on Brownfield Sites: Assessment,Rehabilitation and Development, BROWNFIELDS - Cadiz, Spain
Duration: 2002 Sep 22002 Sep 4

Other

OtherFirst International Conference on Brownfield Sites: Assessment,Rehabilitation and Development, BROWNFIELDS
CountrySpain
CityCadiz
Period02-09-0202-09-04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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