MBBR بررسي مشاهدات ميكروسكوپي در فرايند نيترات و ازت سازي در سيستم هاي بستر بيوفيلمي متحرك

Biological treatment methods are the most common methods used for nitrogen removal. In a nitrification process, ammonia changes to nitrate by oxidation under aerobic conditions and in an anaerobic process (denitrification) nitrate nitrogen turns to gaseous nitrogen and exits the reactor. The most common ammonia removal bacterias are nitrosomonas and nitrobacter. More various microorganisms are responsible for the dentrification process. In this research, nitrification and denitrificatian processes, in two series moving bed biofilm reactors, have been studied. Most of the observed bacterias lie under the following groups: Bacillus, Beggiatoa or Archromatium.Microorganisms of suspended and attached biomass are the same. It is useful to find out the types of active nitrifiers and denitrifiers. By this knowledge, these kinds of bacteria can be grown before starting up and a seeding technique used to reduce the time of batch operation which is necessary for nitrifiers and denitrifiers growth. Also, there are better results because of biological enhancement caused by the improved microorganisms seeded to the reactors.