Construction method and application of two-step decay model of nitrite oxidizing bacteria
A technology for oxidizing bacteria and nitrous acid, applied in chemical instruments and methods, biological treatment adjustment methods, special data processing applications, etc., can solve problems such as the inability to transform dead cells into soluble evaluations, and achieve improved sewage treatment effects and perfect models Effect
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Embodiment 1
[0032] Embodiment 1 Construction of the two-step decay model of nitrous acid oxidizing bacteria of the present invention
[0033] 1. Use NaNO 2 (500mg-N / L), NH 4 CI(1.0mg-N / L), KH 2 PO4(0.13mg-P / L) and Na 2 Synthetic wastewater of PO4 (1.67-P / L) was enriched in sludge in a 5-L sequencing batch reactor (SBR) (the purpose of NOB enrichment is to eliminate the interference of other bacterial species). The pH, temperature and DO of the reactor were controlled at 7.3, 35±0.5°C and above 5mg / L, respectively. The SRT of the SBR reactor was maintained at 50 days, and after 240 days of cultivation, the experiment was carried out with concentrated NOB sludge.
[0034] 2. Concentrated NOB sludge uses NH 4 CI(1.0mg-N / L), KH 2 PO4(0.13mg-P / L) and Na 2 Synthetic wastewater of PO4 (1.67-P / L) was centrifuged three times (5000rpm), three minutes each time. Before NOB sludge cultivation, the sludge samples were centrifuged three times using nitrite-free inorganic synthetic wastewater to...
Embodiment 2
[0055] Example 2 Under the condition that the concentration of nitrous acid is 50 mg-N / L, the model equation established in Example 1 is used to detect and simulate OUR and COD of NOB.
[0056] (1) with NaNO 2 (500mg-N / L), NH 4 CI(1.0mg-N / L), KH 2 PO 4 (0.13mg-P / L) and Na 2 PO 4 (1.67-P / L) synthetic wastewater was enriched in sludge in a 5-L sequencing batch reactor (SBR) (the purpose of NOB enrichment is to eliminate the interference of other bacterial species). The pH, temperature and DO of the reactor were controlled at 7.3, 35±0.5°C and above 5mg / L, respectively. The SRT of the SBR reactor was maintained at 50 days, and after 240 days of cultivation, the experiment was carried out with concentrated NOB sludge.
[0057] (2) Concentrated NOB sludge with NH 4 CI(1.0mg-N / L), KH 2 PO 4 (0.13mg-P / L) and Na 2 PO 4 (1.67-P / L) synthetic wastewater was centrifuged three times (5000rpm), each time for three minutes. Before NOB sludge cultivation, the sludge samples were c...
Embodiment 3
[0069] Example 3 Under the condition that the concentration of nitrous acid is 2000 mg-N / L, the model equation established in Example 1 is used to detect and simulate OUR and COD of NOB.
[0070] (1) with NaNO 2 (500mg-N / L), NH 4 CI(1.0mg-N / L), KH 2 PO 4 (0.13mg-P / L) and Na 2 PO 4 (1.67-P / L) synthetic wastewater was enriched in sludge in a 5-L sequencing batch reactor (SBR). The pH, temperature and DO of the reactor were controlled at 7.3, 35±0.5°C and above 5mg / L, respectively. The SRT of the SBR reactor was maintained at 50 days, and after 240 days of cultivation, the experiment was carried out with concentrated NOB sludge.
[0071] (2) Concentrated NOB sludge with NH 4 CI(1.0mg-N / L), KH 2 PO 4 (0.13mg-P / L) and Na 2 PO 4 (1.67-P / L) synthetic wastewater was centrifuged three times (5000rpm), each time for three minutes.
[0072] (3) The NOB concentrated sludge without nitrite was used for the respiration test, and the NOB culture was carried out under the experime...
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