A study of solubilization of sewage sludge by hydrothermal treatment
| Autor: | Sunkyung Lee, Munsik Park, Donghee Park, Seungjae Yeon, Ji Hae Seo, Namgyu Kim |
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| Rok vydání: | 2019 |
| Předmět: |
Pollution
Environmental Engineering media_common.quotation_subject 0208 environmental biotechnology Sewage 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Waste Disposal Fluid Waste Management and Disposal 0105 earth and related environmental sciences media_common Waste management business.industry Temperature General Medicine Thermal hydrolysis Models Theoretical 020801 environmental engineering Waste treatment Activated sludge Wastewater Environmental science Sewage sludge treatment business Sludge |
| Zdroj: | Journal of environmental management. 250 |
| ISSN: | 1095-8630 |
| Popis: | The use of activated sludge process for biological treatment of domestic and industrial wastewaters generates large amounts of sewage sludge, which is regarded as problematic biowaste. Conventional waste treatment methods such as landfilling and ocean pumping have been used to dispose the unwanted sludge, but this practice is no longer recommended due to serious secondary pollution and strict environmental regulations. Hydrothermal treatment represents a promising alternative that has attracted attention in recent years. In this study, batch experiments of hydrothermal treatment of domestic sewage sludge were conducted under varying conditions (temperature of 150–300 °C, reaction time of 0.5–3.0 h, and sludge concentration of 5–30 g/L). A statistical study of the responses, including disintegration degree and concentration of dissolved compounds, was performed using a response surface methodology. Optimal conditions for hydrothermal treatment of sewage sludge were obtained through mathematical modeling. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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