Culture method of aerobic nitrosification granule sludge
A technology of nitrosation granules and cultivation method, which is applied in the field of cultivation of domestic sewage nitrosation granular sludge, can solve the problems of long enrichment and acclimation time of dominant bacteria, low effect of ammonia nitrogen oxidation, and high requirements for bio-retention capacity of reactors, and achieve removal The effect of improving efficiency and operation stability
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[0013] 1. Reactor device such as figure 1 shown.
[0014] 2. The influent used in the example is the domestic sewage of the residential area, the concentration of ammonia nitrogen in the influent is 60-80mg / l, the concentration of nitrate nitrogen is less than 1mg / l, the concentration of nitrous nitrogen is less than 1mg / l, and the concentration of COD is 160mg / l-250mg / l.
[0015] 3. The operation steps of the above method are as follows:
[0016] 1) Inoculation sludge: inoculate the anammox granular sludge in the anammox reactor, the influent ammonia nitrogen concentration of the anammox reactor is 40-50mg / l, and the nitrous concentration is 50-60mg / l , The total nitrogen removal load is 0.3-0.4kg / (kgvss·d). The particle size of the inoculation sludge is 1.0-2.0mm, and the sludge concentration in the reactor after inoculation is 500mg / l-1000mg / l.
[0017] 2) Start-up stage: SBR reactor is used with an effective volume of 70L. The SBR operation cycle is: water intake, aera...
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