Influence of the free water content on the dewaterability of sewage sludges
| العنوان: | Influence of the free water content on the dewaterability of sewage sludges |
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| المؤلفون: | J. Kopp, Norbert Dichtl |
| المصدر: | Water Science and Technology. 44:177-183 |
| بيانات النشر: | IWA Publishing, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | Environmental Engineering, business.industry, Chemistry, Environmental engineering, Sewage, medicine.disease, Dewatering, Chemical engineering, medicine, Bound water, Dehydration, business, Water binding, Surface water, Water content, Sludge, Water Science and Technology |
| الوصف: | Dewaterabilty of sewage depends on the physical water distribution. The various types of water in sewage sludge are mainly distinguished by type and intensity of their physical bonding to the solids. In a sewage sludge suspension different types of water can be distinguished. These are free water, which is not bound to the particles, interstitial water, which is bound by capillary forces between the sludge flocs, surface water, which is bound by adhesive forces and intracellular water. Only free water can be separated during mechanical dewatering. It can be shown, that thermo-gravimteric measurement of the free water content leads to an exact prediction of full-scale dewatering results. Maximum dewatering results are reached by separating all free water during centrifugation. Furthermore on the basis of the drying curve an estimation of water binding energies can be achieved. The binding energy for free water is less than 0,28 kJ/kg water. The binding energy for bound water (sum of surface and intracellular water) is higher than 5 kJ/kg water. |
| تدمد: | 1996-9732 0273-1223 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::e5d15454262e3b5ca6ac4a6dd9d0ddec https://doi.org/10.2166/wst.2001.0613 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........e5d15454262e3b5ca6ac4a6dd9d0ddec |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19969732 02731223 |
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