Urban sewage nitrogen and phosphorus removal system and technology coupled with side flow phosphorus recovery
The invention relates to an urban sewage nitrogen and phosphorus removal system and technology coupled with side flow phosphorus recovery. The urban sewage nitrogen and phosphorus removal system coupled with sidestream phosphorus recovery comprises a mainstream improved A2O nitrogen and phosphorus r...
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| Hauptverfasser: | , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to an urban sewage nitrogen and phosphorus removal system and technology coupled with side flow phosphorus recovery. The urban sewage nitrogen and phosphorus removal system coupled with sidestream phosphorus recovery comprises a mainstream improved A2O nitrogen and phosphorus removal unit and a sidestream phosphorus recovery unit, the main stream improved A2O nitrogen and phosphorus removal unit completes nitrogen removal by denitrification, anaerobic phosphorus release, phosphorus removal by denitrification and aerobic phosphorus uptake, and an aluminum salt or ferric salt phosphorus removal agent is added into the side stream phosphorus recovery unit to generate a phosphate precipitation product and recover the phosphate precipitation product. According to the urban sewage nitrogen and phosphorus removal process coupled with side flow phosphorus recovery, the defects of synergistic phosphorus removal and post phosphorus removal are overcome, the carbon source utilization efficiency of |
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