Treatment system for nitrate-containing wastewater
The invention provides a treatment system for nitrate-containing wastewater. The treatment system comprises a wastewater storage tank, an anaerobic tank, a facultative tank, an aerobic tank and a sedimentation tank which are connected in sequence. The anaerobic tank comprises n anaerobic tank subare...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a treatment system for nitrate-containing wastewater. The treatment system comprises a wastewater storage tank, an anaerobic tank, a facultative tank, an aerobic tank and a sedimentation tank which are connected in sequence. The anaerobic tank comprises n anaerobic tank subareas which are communicated in sequence, the facultative tank comprises m facultative tank subareas of which the bottoms are communicated in sequence, and n and m are integers greater than or equal to 2. Each anaerobic tank partition and each facultative tank partition contain denitrifying bacteria, and the concentration of the denitrifying bacteria in each anaerobic tank partition is greater than that of the denitrifying bacteria in each facultative tank partition. The treatment system further comprises a nutrition tank, and the nutrition tank is connected with the first anaerobic tank subarea, the first facultative tank subarea and the first aerobic tank subarea through pipelines. And the external reflux pipeline i |
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