Iron and manganese removal: Recent advances in modelling treatment efficiency by rapid sand filtration
| Autor: | C. Bertelkamp, W.W.J.M. de Vet, Jantinus H. Bruins, Bas Hofs, B. van den Akker, J. Dusseldorp, F. Schoonenberg Kegel, D. Vries |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Iron 0208 environmental biotechnology Inorganic chemistry Kinetics chemistry.chemical_element Portable water purification 02 engineering and technology Manganese 010501 environmental sciences 01 natural sciences law.invention Water Purification Reaction rate constant Adsorption law Rapid sand filter Waste Management and Disposal Filtration 0105 earth and related environmental sciences Water Science and Technology Civil and Structural Engineering Chemistry Ecological Modeling Environmental engineering Sorption Silicon Dioxide Pollution 020801 environmental engineering Water Pollutants Chemical |
| Zdroj: | Water research. 109 |
| ISSN: | 1879-2448 |
| Popis: | A model has been developed that takes into account the main characteristics of (submerged) rapid filtration: the water quality parameters of the influent water, notably pH, iron(II) and manganese(II) concentrations, homogeneous oxidation in the supernatant layer, surface sorption and heterogeneous oxidation kinetics in the filter, and filter media adsorption characteristics. Simplifying assumptions are made to enable validation in practice, while maintaining the main mechanisms involved in iron(II) and manganese(II) removal. Adsorption isotherm data collected from different Dutch treatment sites show that Fe(II)/Mn(II) adsorption may vary substantially between them, but generally increases with higher pH. The model is sensitive to (experimentally) determined adsorption parameters and the heterogeneous oxidation rate. Model results coincide with experimental values when the heterogeneous rate constants are calibrated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect