| Autor: |
H, Helness, E, Melin, Y, Ulgenes, P, Järvinen, V, Rasmussen, H, Odegaard |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
Water science and technology : a journal of the International Association on Water Pollution Research. 52(10-11) |
| ISSN: |
0273-1223 |
| Popis: |
Many cities around the world are looking for compact wastewater treatment alternatives since space for treatment plants is becoming scarce. In this paper development of a new compact, high-rate treatment concept with results from experiments in lab-scale and pilot-scale are presented. The idea behind the treatment concept is that coagulation/floc separation may be used to separate suspended and colloidal matter (resulting in70% organic matter removal in normal wastewater) while a high-rate biofilm process (based on Moving Bed biofilm reactors) may be used for removing low molecular weight, easily biodegradable, soluble organic matter. By using flotation for floc/biomass separation, the total residence time for a plant according to this concept will normally be1 hour. A cationic polymer combined with iron is used as coagulant at low dosages (i.e. 1-2 mg polymer/l, 5-10 mg Fe/l) resulting in low sludge production (compared to conventional chemical treatment) and sufficient P-removal. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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