| 摘要 |
PURPOSE: A granule of nitrifying microorganism containing nucleon and a method for promoting granulation of nitrifying microorganism are provided to minimize wash out of the microorganism and improve removal efficiency of nitrogen. CONSTITUTION: A granule of nitrifying microorganism contains nucleon and nitrifying microorganism. The nucleon is inorganic nucleon, organic nucleon or organic-inorganic mixture nucleon. The inorganic nucleon is sand, activated charcoal, anthracite, zeolite or CaCO3. The organic nucleon is alginate, kappa-carrageenan, gelatin or agar. A method for promoting granulation of the nitrifying microorganism comprises: a step of injecting nucleon to bio-reactor containing the nitrifying microorganism; a step o f injecting water containing high concentration of ammonia to the bio-reactor; a step of supplying oxygen to the bio-reactor for granulation; a step of precipitating the granule and discharging sludge; and a step of discharging precipitated nitrifying microorganism granule. |
