Novel partial-nitrosation anaerobic ammoxidation integrated reactor

Abstract

The invention discloses a novel partial-nitrosation anaerobic ammoxidation integrated reactor which comprises a main reaction area, an upper three-phase separator and an air ascending chamber, wherein the main reaction area is internally sequentially provided with a sludge fluidization area, a middle biomembrane area and an upper biomembrane area from bottom to top, and the main reaction area is externally sequentially provided with a bottom water inlet, an air inlet and an upper water outlet from bottom to top; a three-phase separator area internally sequentially comprises a biomembrane area and an air collecting chamber from bottom to top; and the three-phase separator is externally provided with a sediment area. The novel partially-nitrosation anaerobic ammoxidation integrated reactor disclosed by the invention can realize the subarea culture of nitrosation and anaerobic ammoxidation in a single reactor, thereby preventing the influence of certain environment factors on anaerobic ammoxidation bacteria and nitrosation bacteria; and the novel partially-nitrosation anaerobic ammonia oxidation integral reactor realizes the combination of various areas through a self-reflux function, thereby realizing the denitrification of wastewater autotrophs.

Description

technical field [0001] The invention relates to a novel partial nitrosation anaerobic ammonia oxidation integrated reactor. Background technique [0002] In recent years, as a new type of biological denitrification technology, anaerobic ammonium oxidation has been favored by many researchers because of its high denitrification efficiency and low treatment cost. Anaerobic ammonium oxidation refers to the process in which anammox bacteria use ammonia nitrogen as an electron donor and nitrous nitrogen as an electron acceptor to perform a biological reaction under anaerobic conditions and convert it into nitrogen. This process does not require oxygen and organic carbon sources, greatly reducing power and energy consumption. However, anaerobic ammonium oxidation requires nitrite as a substrate, and the ammonia nitrogen in wastewater needs to be partially nitrosated before anaerobic ammonium oxidation reaction. However, there are some differences in physiological characteristics...

AI Technical Summary

Problems solved by technology

The application of it in nitrification-anammox mainly highlights the following problems: (1) Due to the strong adaptability of nitrifying bacteria, placing nitrosifying bacteria in the reactor alone for cultivation can easily cause the growth of nitrifying bacteria, thereby Affect the long-term and stable operation of the nitrification effect; (2) Since anammox bacteria are strictly anaerobic bacteria, and nitrosative bacteria are aerobic bacteria, they are placed in a single reactor. , dissolved oxygen will have an impact on the denitrification function of anammox bacteria; (3) Regardless of whether two reactors are used for isolated culture or a single reactor is used for culture, the dissolved oxygen in the effluent is low, and reoxygenation of the effluent is required; (4) Anaerobic ammonia oxidation is a reaction in which the pH value increases, and nitrosation is a reaction in which the pH value decreases. When using two reactors, it is necessary to add acid and alkali to adjust the pH value

Images