Method and Apparatus of Biological Nitrogen Removal from the High Concentration Industrial Wastewater

摘要

The present invention is to make possible not only to reduce the amount of oxygen required during nitrification it immediately sikimeuroseo denitrification after using the FA (free ammonia) induce nitrite screen up to nitrite, not reducing the consumption of the external carbon source necessary for denitrification relates to the removal biological nitrogen in high concentration wastewater method and an apparatus for removing biological nitrogen of such a high-concentration waste water method and apparatus is also by storing the incoming water to adjust the inflow load and the addition and the storage tank 10 to properly compensate for the alkalinity, the storage tank 10 constant FA of the raw water flowing by; and (free ammonia NH ₃₎ first aerobic oxidation tank 20 by the action of Nitrobacter is suppressed controlling the nitrification to nitrite nitrogen by the first aerobic and the first anoxic denitrification tank 30 to the denitrification by the incoming water to the nitrification nitrite nitrogen in the oxidation chamber 20 in its carbon atom, Group a second aerobic to one anoxic denitrification using a self carbon atoms in the tank 30 as well as the ammonia contained in the raw water is organic matter decomposition takes place oxidize failed to remove the ammonia from the first aerobic oxidation tank 20 to nitrite and the oxidation tank 40, the second second anoxic denitrification tank 50 for denitration by the nitrite external carbon source of nitrogen which is optionally administered in the oxidation in the aerobic oxidation tank 40, and the second anoxic denitrification tank ( 50) as well as being selectively chemical treatment to the denitrification raw water as well as to reduce the external carbon source oxygen requirements, and residence time by being composed of a settling tank (60) to remove precipitated some un-removed particulates nitrogen in improving the denitration efficiency which will enable effective.