Real time control for minimizing effluent concentrations during storm water events
Increased flow rates due to stormwater at the Klagshamn wastewater treatment plant occasionally cause hydraulic overloading of the activated sludge process resulting in sludge loss from the secondary clarifiers. To minimize these problems different operational strategies have been evaluated at the p...
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| Veröffentlicht in: | Water science and technology 1996, Vol.34 (3-4), p.127-134 |
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| container_title | Water science and technology |
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| creator | Nyberg, Ulf Andersson, Bengt Aspegren, Henrik |
| description | Increased flow rates due to stormwater at the Klagshamn wastewater treatment plant occasionally cause hydraulic overloading of the activated sludge process resulting in sludge loss from the secondary clarifiers. To minimize these problems different operational strategies have been evaluated at the plant. Practical experiences have shown the benefits of using in-line storage for flow equalization even if the available volumes may seem small in comparison to the total daily flow rate during stormwater occasions. Step feed operation at the treatment plant can be used to further ease the problems with sludge loss. By-pass of primary treated wastewater can finally be used to avoid hydraulic overloading of the biological treatment process. By combining these strategies in a real time control system, the need for erecting off-line storage volumes can be minimized. |
| doi_str_mv | 10.1016/0273-1223(96)00564-1 |
| format | Article |
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To minimize these problems different operational strategies have been evaluated at the plant. Practical experiences have shown the benefits of using in-line storage for flow equalization even if the available volumes may seem small in comparison to the total daily flow rate during stormwater occasions. Step feed operation at the treatment plant can be used to further ease the problems with sludge loss. By-pass of primary treated wastewater can finally be used to avoid hydraulic overloading of the biological treatment process. By combining these strategies in a real time control system, the need for erecting off-line storage volumes can be minimized.</abstract><cop>London</cop><pub>Elsevier Ltd</pub><doi>10.1016/0273-1223(96)00564-1</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0273-1223 |
| ispartof | Water science and technology, 1996, Vol.34 (3-4), p.127-134 |
| issn | 0273-1223 1996-9732 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_15853847 |
| source | EZB-FREE-00999 freely available EZB journals |
| subjects | Activated sludge Activated sludge process Biological activity Biological treatment by-pass Clarifiers Control systems Equalization Flow rates Flow velocity in-line storage Overloading Real time real time control secondary clarifier Sludge sludge loss step-feed storage basin Storms Stormwater Wastewater Wastewater treatment Wastewater treatment plants Water treatment plants |
| title | Real time control for minimizing effluent concentrations during storm water events |
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