Occasionally, too high levels of total phosphorus have been measured in the outgoing water at Blynäs waste water treatment plant in Vaxholm. Consequently, there has been an interest to investigate how the separation of phosphorus can be made more effective. The aim of this report is to improve the precipitation strategy by analyzing the daily variations of phosphorus concentration in the incoming water. The result showed that there were no big differences in the daily variations of the concentration of total phosphorus. The result also showed some intervals during the day when the load of phosphorus was higher respectively lower. Two alternative solutions were discussed as suggestions for improving the precipitation strategy. The current system could either be optimized by taking the result of this project into account, or alternatively a machine that continually measures relevant information in the incoming water and, based on those values, adjusts the dose of precipitation chemicals could be purchased.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-147906 |
| Date | January 2014 |
| Creators | Nilsson, Nina |
| Publisher | KTH, Hållbar utveckling, miljövetenskap och teknik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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