Effects of explosive explosion shockwave pretreatment on sludge dewaterability.

Abstract

The potential benefits and mechanism of explosive explosion shockwave pretreatment on sludge dewatering treatments were investigated in this study. Water content of sludge cake after centrifugation was used to evaluate sludge dewaterability. Particle size, viscosity, turbidity, and micrograph were determined to explain the observed changes in the pretreatment process. The results indicated that the optimal pretreatment condition, generating the lowest water content of sludge cake, was 25 g explosive and 96.7% original sludge water content. This condition resulted in the reduced particle size and viscosity as well as increased turbidity. Particle size and viscosity significantly contributed to enhance sludge dewaterability. Micrograph investigation indicated that explosive explosion shockwave pretreatment could rupture sludge flocs, release physically bound water, and extracellular substances into the solution, consequently enhancing sludge dewaterability.

• Authors: Dayong Chen, Jun Yang
• Journal: Bioresource technology (Bioresour Technol) Vol. 119 Pg. 35-40 (Sep 2012) ISSN: 1873-2976 [Electronic] England
• PMID: 22728179 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2012 Elsevier Ltd. All rights reserved.

Chemical References

• Explosive Agents
• Sewage
• Triazines
• Water
• cyclonite

Topics

• Equipment Design
• Equipment Failure Analysis
• Explosive Agents (chemistry)
• High-Energy Shock Waves
• Sewage (chemistry)
• Triazines (chemistry)
• Water (analysis, chemistry)
• Water Purification (instrumentation, methods)