Continuous flow dephosphorus and nitrosation coupled anammox denitrification and phosphorus removal sbr process

Abstract

The continuous flow phosphorus removal and nitrosation coupled anammox nitrogen and phosphorus removal SBR process belongs to the field of sewage biological treatment, and the device includes a raw water tank, a continuous flow phosphorus removal and nitrosation reactor, a regulating water tank, anammox reactor, and an effluent water tank; The domestic sewage enters the continuous flow phosphorus removal nitrosation reactor and the anaerobic ammonium oxidation reactor respectively. The domestic sewage first enters the anaerobic stage of the continuous flow phosphorus removal and nitrosation reactor to remove the organic carbon source in the sewage, anaerobic phosphorus release by inoculation of phosphorus removal granular sludge; high dissolved oxygen reactor aerobic phosphorus removal; and then through low dissolved oxygen reactor Oxygen inhibits nitrite oxidizing bacteria, and ammonia oxidizing bacteria convert ammonia nitrogen to nitrous. The effluent from the continuous flow phosphorus removal and nitrosation reactor enters the anammox reactor after adjusting the water volume in the effluent tank, and the nitrous reacts with ammonia nitrogen under the action of anammox bacteria to generate nitrogen. On the basis of saving energy, this process solves the problem of insufficient carbon source in domestic sewage and realizes nitrogen and phosphorus removal.

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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