Modeling and simulating for enrichment of Nitrifying Bacteria by reject water to enhance nitrification in wastewater treatment

Though Enrichment of Nitrifying Bacteria in side reactor and injecting into main reactor to enhance nitrification in domestic sewage treatment, we build a model by adding a new item append the function and construct a new equation into equation set. The simulation result shows that bio-augment is an effective way to enhancing nitrification. Augmenting quality can improve effect of nitrification. It also can increase nitrifies performance and shorten sludge ages, therefore, the bio-augment not only can enhance nitrification, but also can enhance removing phosphorus.