Evaluation of the physical properties of water treatment residue for use as a soil substitute compared with decomposed granite soil
Article first published online: 16 JUL 2010
© 2010 Japanese Society of Soil Science and Plant Nutrition
Soil Science & Plant Nutrition
Volume 56, Issue 3, pages 361–365, June 2010
How to Cite
PARK, S.-G., OHASHI, M., KUROSAWA, K., KIM, Y.-J. and YAHATA, H. (2010), Evaluation of the physical properties of water treatment residue for use as a soil substitute compared with decomposed granite soil. Soil Science & Plant Nutrition, 56: 361–365. doi: 10.1111/j.1747-0765.2010.00468.x
- Issue published online: 16 JUL 2010
- Article first published online: 16 JUL 2010
- Received 13 November 2009. Accepted for publication 25 January 2010.
- decomposed granite soil;
- intra-aggregate and inter-aggregate pores;
- relative gas diffusivity;
- water retention curve;
- water treatment residue
To evaluate water treatment residue (WTR) as a soil substitute material, its physical properties were investigated and compared with decomposed granite soil (DGS). For comparison purposes, relative gas diffusivity (D/D0), saturated hydraulic conductivity (Ks), water retention curve, porosity and readily available water were measured for both the WTR and the DGS. The measured D/D0, Ks, water retention ability and porosity were higher for the WTR than for the DGS. These differences may be attributable to intra-aggregate and inter-aggregate pores created in the WTR through binding of silt and clay particles in the flocculation process. The behavior of water and gasses surrounding these pores may explain the physical properties of the WTR. The characteristics measured in this evaluation indicate that WTR has good potential for reuse as a soil substitute material.