Evaluation of hydrocyclone and post-treatment technologies for remediation of contaminated dredged sediments
| Autor: | Jeongyun Choi, Jong-Oh Kim, Seongeon Lee, Jin Wook Chung |
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| Rok vydání: | 2015 |
| Předmět: |
Geologic Sediments
Environmental Engineering Environmental remediation Sewage 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences law.invention Pore water pressure law Waste Management and Disposal Filtration Environmental Restoration and Remediation 0105 earth and related environmental sciences Hydrocyclone Waste management business.industry Environmental engineering General Medicine Contamination Models Theoretical 021001 nanoscience & nanotechnology Lakes Waste Disposal Facilities Environmental science Post treatment 0210 nano-technology business Water Pollutants Chemical |
| Zdroj: | Journal of environmental management. 166 |
| ISSN: | 1095-8630 |
| Popis: | There are many disposal and treatment methods for contaminated dredged sediments, depending on their properties. In this study, treatment methods for the remediation of dredged sediments as well as the reduction of pore water generated from dredged sediments were optimized. The efficiency of separation using hydrocyclone as the pre-treatment increased with greater inflow velocity of hydrocyclone, deeper insertion of the vortex finder, and smaller hydrocyclone diameter. In the post-treatment of hydrocyclone overflow, the chemical coagulation and membrane filtration methods had high efficiency with regard to the removal of solid and organic compounds, but the former was less feasible, due to its excessive operation and sludge disposal costs. The membrane filtration was easily applicable in the field, based on its convenience of installation and lower cost of operation despite low removal efficiency of trace organic contaminants. |
| Databáze: | OpenAIRE |
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