The integrated wastewater treatment system combines the removal of organic pollutants and ammonia nitrogen, mainly relying on the AO biological treatment process within the equipment.

In Grade A, the working principle is that due to the high concentration of organic matter in the wastewater, the microorganisms are in an anaerobic state. At this point, the microorganisms are facultative, converting the organic nitrogen during their siesta into NH-N, while also using the organic matter as an electron donor to transform NO-.

N.NO-N is converted to N. Furthermore, it utilizes a portion of organic carbon sources and NH-N to synthesize new cellular substances. Therefore, the A-grade tank not only possesses the function of organic matter removal, which reduces the organic load on the subsequent aerobic tank, benefiting the digestion process, but also relies on the raw water...

Organic substances of high concentration in the water are processed through anaerobic digestion, ultimately eliminating nitrogen eutrophication pollution.

In the O stage, although the concentration of organic matter has been significantly reduced, there is still a certain amount of organic matter and a high level of NH-N present. In order to further oxidize and decompose the organic matter, and to ensure that the digestion process proceeds smoothly with the carbonization process being completed, the O stage is set up.

Low organic loading good biological contact oxidation pond, primarily aerobic microorganisms and autotrophic bacteria (digestive bacteria) exist in the O-stage pond, where aerobic microorganisms decompose organic matter into CO2 and H2O, and autotrophic bacteria (digestive bacteria) utilize the inorganic substances produced by the decomposition of organic matter to...

Carbon or CO2 from the air, as a nutrient source, converts NH-N in wastewater into NO-N. The effluent from the O-Level pond is recycled back to the A-Level pond, serving as an electron acceptor to ultimately eliminate nitrogen pollution through reverse digestion.