Multi-component solute transport model with cation exchange under redox environment and its application for designing the slow infiltration setup

Gingging Guerra, Kenji Jinno, Yoshinari Hiroshiro, Koji Nakamura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The present trend of disposing treated sewage water by allowing it to infiltrate the soil brings a new dimension to environmental problems. It is therefore necessary to identify the chemicals likely to be present in treated sewage water. A soil column experiment was conducted to determine the behavior of chemical species in soil columns applied with secondary treated sewage water. To predict the behavior of chemical species, a multicomponent solute transport model that includes the biochemical redox process and cation exchange process was developed. The model computes changes in concentration over time caused by the processes of advection, dispersion, biochemical reactions and cation exchange reactions. The solute transport model was able to predict the behavior of different chemical species in the soil column applied with secondary treated sewage water. The model reproduced the sequential reduction reaction. To design the safe depth of plow layer where NO 3 - is totally reduced, a numerical study of NO 3 - leach was done and it was found out that the pore velocity and concentration of CH 2O at the inject water was found to affect NO 3 - reduction in the mobile pore water phase. It is revealed that the multicomponent solute transport model is useful to design the land treatment system for NO 3 removal from wastewater.

Original languageEnglish
Pages (from-to)78-100
Number of pages23
JournalMemoirs of the Faculty of Engineering, Kyushu University
Volume64
Issue number1
Publication statusPublished - Mar 1 2004
Externally publishedYes

Fingerprint

Solute transport
solute transport
Infiltration
ion exchange
Ion exchange
infiltration
Positive ions
Sewage
sewage
soil column
Soils
Water
water
Advection
porewater
advection
Oxidation-Reduction
Wastewater
wastewater
chemical

All Science Journal Classification (ASJC) codes

  • Energy(all)
  • Atmospheric Science
  • Earth and Planetary Sciences(all)
  • Management of Technology and Innovation

Cite this

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