Large-scaled culture method of high-concentration nitrosobacteria and application thereof
A technology for nitrosating bacteria and a culturing method is applied in the field of large-scale cultivation of high-concentration nitrosifying bacteria, which can solve problems such as being unsuitable for large-scale cultivation and affecting the growth of nitrifying bacteria, achieve significant energy-saving benefits, and improve ammonia nitrogen removal efficiency and activity. Good results
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Embodiment 1
[0022] The directional enrichment culture of embodiment 1 nitrosative bacteria (1)
[0023] The enrichment culture of experimental nitrosative bacteria uses a 10L glass tank simple culture device, equipped with a small stirring device, and the aeration head is passed into the bottom of the tank to provide oxygen. Add the enrichment culture solution with an initial ammonia nitrogen mass concentration of 100mg / L, take the activated sludge with a volume ratio of 20% from the sewage treatment plant and inoculate once, control the enrichment culture temperature at 29°C, pH value at 8.1, and dissolved oxygen at 3.5mg / L L, the stirring speed is 120r / min. The composition of the enriched medium is 1.0g NH per liter of water 4 HCO 3 , 0.5g KH 2 PO 4 , 1.0g Na 2 HPO 4 , 0.4g MgSO 4 ·7H 2 O, 1.0g NaHCO 3 and 0.5g CaCO 3 . Add 1g / L NH in mid-culture 4 HCO 3 And growth promoter 0.5g / L KH 2 PO 4 , 1g / L Na 2 HPO 4 , 0.5g / L MgSO 4 ·7H 2 O, 0.1g / L FeSO 4 ·7H 2 O, to be cult...
Embodiment 2
[0024] The directional enrichment culture of embodiment 2 nitrosative bacteria (two)
[0025] The enrichment culture of experimental nitrosative bacteria uses a 10L glass tank simple culture device, equipped with a small stirring device, and the aeration head is passed into the bottom of the tank to provide oxygen. Add the enrichment culture solution with an initial ammonia nitrogen mass concentration of 30mg / L, take the activated sludge with a volume ratio of 0.5% from the sewage treatment plant for one inoculation, control the enrichment culture temperature at 27°C, pH value at 7.5, and dissolved oxygen at 1.5mg / L L, the stirring speed is 50r / min. The composition of the enriched medium is 0.1g NH per liter of water 4 Cl, 0.1g K 2 HPO 4 , 0.1g NaH 2 PO 4 , 0.05g MgSO 4 ·7H 2 O, 0.1g NaHCO 3 and 0.1g CaCO 3 . Add NH in the middle 4 Cl 0.5g / L and growth promoter 0.05g / LK 2 HPO 4 , 0.5g / L NaH 2 PO 4 , 0.1g / L MgSO 4 ·7H 2 O, 0.01g / L FeSO 4 ·7H 2 O, to be cultur...
Embodiment 3
[0026] Directional enrichment culture of embodiment 3 nitrosative bacteria (three)
[0027] The enrichment culture of experimental nitrosative bacteria uses a 10L glass tank simple culture device, equipped with a small stirring device, and the aeration head is passed into the bottom of the tank to provide oxygen. Add the enrichment culture solution with an initial ammonia nitrogen mass concentration of 200mg / L, take the activated sludge with a volume ratio of 20% from the sewage treatment plant and inoculate once, control the enrichment culture temperature at 32°C, pH value at 8.0, and dissolved oxygen at 3.5mg / L L, the stirring speed is 100r / min. The composition of the enriched culture solution is 1g (NH 4 ) 2 SO 4 , 2g K 2 HPO 4 , 1g NaH 2 PO 4 , 0.5g MgSO 4 ·7H 2 O, 2g NaHCO 3 and 2g CaCO 3 . Addition in the middle (NH 4 ) 2 SO 4 1g / L and growth promoter 1.0g / LK 2 HPO 4 , 1g / L NaH 2 PO 4 , 1g / L MgSO 4 ·7H 2 O, 0.5g / L FeSO 4 ·7H 2 O, to be cultured fo...
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