Attrition efficiency in the decontamination of stormwater sediments |
| |
| Authors: | François Petavy Veronique Ruban Pierre Conil Jean Yves Viau |
| |
| Institution: | 1. Laboratoire Central des Ponts et Chaussées, B.P. 4129, 44341 Bouguenais cedex, France;2. BRGM, SGR/PdL, 1 rue des Saumonières, BP 92342, 44323 Nantes cedex 03, France;3. Saint Dizier Environnement, rue Gay Lussac, BP 09-Zone industrielle, 59147 Gondecourt, France |
| |
| Abstract: | The purpose of this research is to propose a laboratory method based on attrition and sieving for the treatment of runoff water sediments in the aim of developing a pilot unit. The attrition process serves to remove fine particles and pollutants from the surface of coarse stormwater sediment particles. In all cases, the efficiency of pollutant removal is dependent upon various parameters, including cutoff threshold, residence time, solid density, temperature and impeller speed. This article presents the optimization of these various parameters along with method efficiency; for this work, several sediments have been tested. The results indicate that an attrition scrubber may be effectively used to remediate contaminated sediment and that reuse is definitely possible. A model of the method will also be proposed to study the behavior of fine particles and pollutants. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
