| 摘要 |
PURPOSE: A biological nitrogen treatment method of sewage and wastewater is provided to maximize a removal rate of nitrogen. CONSTITUTION: A biological nitrogen treatment method of sewage and wastewater includes: a first step of converting ammoniacal nitrogen into nitrite nitrogen by injecting raw water into a nitritating bath (S1); a second step of injecting the treated water into an anammox bath in order to generate a reaction between ammoniacal nitrogen and nitrite nitrogen by anammox bacteria and to obtain a nitrogen gas (S2); and a third step of converting the nitrite nitrogen and nitrate nitrogen into a nitrogen gas using sulfur oxidation denitrification bacteria by injecting the treated water into a sulfur oxidation denitrification bath (S3). [Reference numerals] (AA) Raw water injection; (BB) Nitrozation treatment; (CC) Nitrite nitrogen conversion; (DD) Anammox reaction to water treated with nitrozation; (EE,GG) Nitrogen gas conversion; (FF) Sulfur oxidation denitrification to water treated with anammox reaction; (HH) End; (JJ,II) Discharging |
