Phosphorus binding to Filtra P in batch tests
Recent guidelines from the Swedish Environmental Protection Agency recommend stricter regulations for phosphorus (P) reduction in small-scale wastewater treatment, which raises the need for additional and novel treatment steps in small-scale facilities. Following a biological pretreatment, filter sy...
| Veröffentlicht in: | Environmental technology. - 1993. - 33(2012), 7-9 vom: 08. Apr., Seite 1013-9 |
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| Weitere Verfasser: | , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Zugriff auf das übergeordnete Werk: | Environmental technology |
| Schlagworte: | Comparative Study Evaluation Study Journal Article Research Support, Non-U.S. Gov't Calcium Compounds Filtra P Phosphorus 27YLU75U4W |
| Zusammenfassung: | Recent guidelines from the Swedish Environmental Protection Agency recommend stricter regulations for phosphorus (P) reduction in small-scale wastewater treatment, which raises the need for additional and novel treatment steps in small-scale facilities. Following a biological pretreatment, filter systems can be a convenient option. In this study, the P binding capacity of the filter material Filtra P was investigated in batch tests. The batch test method was evaluated with respect to the effects of liquid-to-solid ratio and particle size on P binding capacity. For initial concentrations (c(i)) between 3 and 100 mg L(-1), the P in the solution was completely and rapidly bound to the material, indicating that Filtra P was an efficient substrate for this process. The maximum amount of bound P was 4.3 +/- 0.64 g kg(-1) at c(i) = 300 mg L(-1). The P binding capacity and turbidity measured in the supernatant correlated positively. Turbidity was probably caused by calcium-P precipitates, suggesting precipitation was the major removal mechanism. Neither the liquid-to-solid ratio nor the particle size affected P binding capacity significantly (alpha = 0.05) at c(i) = 1000 mg L(-1), confirming that the conditions used in the batch tests were appropriate. In full-scale applications, the precipitate formed may be at risk of being washed out of the filter, leading to low total P reduction and recovery |
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| Beschreibung: | Date Completed 09.08.2012 Date Revised 10.12.2019 published: Print Citation Status MEDLINE |
| ISSN: | 1479-487X |