The removal of organic pollutants and ammonia nitrogen in the integrated buried domestic sewage treatment equipment mainly depends on the AO biological treatment process in the equipment. It works at level A, Due to the high concentration of organic matter in the sewage, the microorganisms are in a state of hypoxia. At this time, the microorganisms are ambulate microorganisms, which convert organic nitrogen in the sewage into NH and -N, and convert NO2-N, NO and -N into N2 by using organic carbon sources as electron donors. In addition, some organic carbon sources and NH-N are also used to synthesize new cellular materials. Therefore, the A-class pool not only has A certain surface removal function, but also reduces the organic load of the subsequent aerobic pool. It is conducive to nitrification, and relies on the relatively high concentration of organic matter in the raw water to complete the denitrification and finally eliminate the eutrophication pollution of nitrogen. Yes. Level, because the concentration of organic matter has been greatly reduced, but the sewage treatment equipment still has a certain amount of organic matter and high NH-N. In order to further oxidize and decompose organic matter, nitrification can be carried out smoothly when carbonization is completed. An aerobic biological contact oxidation tank with low organic load is set up at level 0. There were mainly aerobic microorganisms and autooxygenated bacteria in the 0-level tank. Aerobic microorganisms decompose organic matter into CO2 and H2O; The self-oxygenating bacteria use the inorganic carbon produced by the decomposition of organic matter or the CO in the air as A nutrient source to transfer the discharge water from the NON, NO,--NO pool in the sewage to the A-class pool. Provide electron acceptor for A class pool, and eventually eliminate nitrogen pollution through denitrification
