Enrichment cultivation of nitrifying sludge and strengthen the system of nitrification

The nitrifying sludge with a large number of nitrifying bacteria is obtained by strengthening enrichment culture. The experiment of "cut peak" of biochemical system is carried out by adding nitrifying sludge. The best performance of enriched nitrifying sludge can be achieved when the concentration of ammonia concentration in the influent water is 40 mg/L. If the nitrification system is affected by the fluctuations of ammonia-nitrogen in the influent water, the addition of 0.5% or 1% of nitrifying sludge under adequate alkaline condition is useful to cut "peak of ammonia-nitrogen". In addition, it also has a significant effect on the recovery and improvement of the nitrification system.