Endogenous denitrification coupled anaerobic ammonia oxidation municipal sewage deep denitrification device and method thereof

Abstract

The invention discloses an endogenous denitrification coupled anaerobic ammonia oxidation municipal sewage deep denitrification device and a method thereof. The device comprises a raw water tank, an SEDA reactor, an intermediate water tank, a PN reactor and a short-cut nitrification effluent water tank, the SEDA reactor is connected with the raw water tank through an SEDA water inlet pump; the SEDA reactor is connected with the middle water tank through a first water outlet valve; wherein the PN reactor is connected with the middle water tank through a PN water inlet pump, the PN reactor is connected with the short-cut nitrification water outlet tank through a PN water outlet valve, the short-cut nitrification water outlet tank is connected with the SEDA reactor through a short-cut nitrification liquid inlet pump, and finally water is discharged through a second water outlet valve of the SEDA reactor. According to the invention, denitrified glycan bacteria and anaerobic ammonia oxidizing bacteria are used for synergistic deep denitrification, so that the problem of insufficient carbon source of low C/N ratio municipal sewage inlet water is solved, and the high efficiency and stability of the denitrification effect of the system are ensured.

Description

technical field [0001] The application belongs to the technical field of sewage biological treatment, and specifically relates to an endogenous denitrification coupling anaerobic ammonium oxidation (SEDA) urban sewage deep denitrification device and method. Background technique [0002] The traditional biological denitrification process (typical representatives such as A / O and A 2 / O process), is currently the most widely used urban sewage biological treatment technology. However, the traditional biological denitrification process consumes a lot of energy and carbon sources, which does not meet the national needs of energy conservation, emission reduction and sustainable development. For sewage biological treatment, how to achieve stable and low-consumption nitrogen removal while preventing nitrogen and phosphorus discharge from causing water eutrophication has become the main research direction in the field of urban sewage biological nitrogen removal. [0003] Anaerobic a...

AI Technical Summary

Problems solved by technology

However, because the water quality and quantity of actual urban sewage fluctuate greatly with seasons, and the organic matter composition is also relatively complex. When the concentration of organic matter in the environment is too high or fluctuates, denitrifying bacteria and anammox bacteria will affect the substrate matrix and living space. competition becomes more intense

Therefore, the application of external source denitrification can easily lead to system instability and deterioration of effluent quality in the urban sewage SAD process.

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