Continuous flow dephosphorization nitrosation coupled anaerobic ammonia oxidation denitrification and dephosphorization SBR process

Abstract

The invention provides a continuous flow dephosphorization nitrosation coupled anaerobic ammonia oxidation denitrification and dephosphorization SBR process, and belongs to the field of sewage biological treatment. A device comprises a raw water tank, a continuous flow dephosphorization nitrosation reactor, a regulating water tank, an anaerobic ammonia oxidation reactor, and a water outlet tank. Domestic sewage enters the continuous flow dephosphorization nitrosation reactor, and the treated sewage enters the anaerobic ammonia oxidation reactor. The sewage is treated by the following specificprocesses in the device: after the domestic sewage firstly enters an anaerobic stage of the continuous flow dephosphorization nitrosation reactor, organic carbon sources in the sewage are removed, andinoculation is performed by using phosphorus removal granular sludge for anaerobic phosphorus release; aerobic dephosphorization is performed in a high dissolved oxygen reactor; nitrite oxidizing bacteria are inhibited by using low dissolved oxygen, and ammonia nitrogen is converted into nitrite by ammonia oxidizing bacteria; and after a volume of outflow water of the continuous flow dephosphorization nitrosation reactor is adjusted by the water outlet tank, the adjusted water enters the anaerobic ammonium oxidation reactor, and the nitrite reacts with ammonia nitrogen under the action of anaerobic ammonium oxidizing bacteria to form nitrogen. The process provided by the invention solves the problem of an insufficient carbon source of the domestic sewage and realizes denitrification and dephosphorization on the basis of saving energy consumption.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to an SBR process for continuous-flow dephosphorization and nitrosation coupled with anaerobic ammonium oxidation denitrification and dephosphorization. Background technique [0002] At present, most of the sewage treatment plants are operated by the continuous flow process, and the continuous flow form is more in line with the actual operating environment and has better practical engineering significance. Nitrogen and phosphorus removal has always been a hot spot in sewage treatment, and the discharge of nitrogen and phosphorus is difficult to meet the national first-level discharge standards. When the carbon-to-nitrogen ratio of domestic sewage is generally low, the problem of insufficient carbon sources can be solved through phosphorus removal and nitrosation coupled with anaerobic ammonium oxidation, and energy consumption can be saved. [0003] Granular slu...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a continuous flow dephosphorization and nitrosation coupled anaerobic ammonium oxidation denitrification and dephosphorization SBR process, which can realize high-efficiency, energy-saving and simultaneous denitrification and dephosphorization of domestic sewage with low carbon-to-nitrogen ratio, and solve the problems in the traditional denitrification and dephosphorization process. Insufficient carbon sources, etc.

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