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

An anaerobic ammonium oxidation and urban sewage technology, applied in the field of urban sewage deep denitrification device, can solve the problems of instability of urban sewage SAD process system, complex organic matter composition, and poor effluent quality, etc., to save aeration energy consumption, Guarantee long-term stability and reduce the effect of aeration energy consumption

Pending Publication Date: 2020-09-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

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Embodiment 1

[0034] This embodiment provides an endogenous denitrification coupled with anammox deep denitrification device for urban sewage, which is used to realize the deep denitrification of urban sewage with low C / N ratio.

[0035] Such as figure 1 As shown, the endogenous denitrification coupled anaerobic ammonium oxidation deep denitrification device for urban sewage in this embodiment includes a raw water tank 1, a SEDA (endogenous denitrification coupled anaerobic ammonium oxidation) reactor 2, an intermediate water tank 3, and a PN (Short-range nitrification) reactor 4 and short-range nitrification effluent water tank 5.

[0036] Specifically, the SEDA reactor 2 is connected to the raw water tank 1 through the SEDA water inlet pump 2.1, and is used to inject urban sewage from the raw water tank 1 into the SEDA reactor 2, and the SEDA reactor 2 is connected to the intermediate water tank 3 by using the first water outlet valve 2.9, It is used to discharge the effluent of organic ...

Embodiment 2

[0046] This embodiment provides a method for deep denitrification of urban sewage by coupling endogenous denitrification with anammox, and the method is completed based on the device described in any of the above embodiments.

[0047] Specifically, the endogenous denitrification coupling anammox deep denitrification method for urban sewage in this embodiment includes the following steps:

[0048] 1) Inoculation start-up stage: inoculate anaerobic ammonium oxidation sludge in SEDA reactor 2, and control the sludge concentration at 2500-3500mg / L, and at the same time inoculate short-course nitrification sludge in PN reactor 4, and control the sludge concentration at 3000mg / L ~4000mg / L.

[0049] 2) Actual operation stage: take urban sewage with low C / N ratio as the treatment object, start SEDA inlet pump 2.1 to inject urban sewage in raw water tank 1 into SEDA reactor 2, anaerobically stir for 2.0-3.0 hours, and settle for 30-60 minutes Finally, open the first water outlet valve...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34C02F101/16
CPCC02F3/307C02F3/305C02F3/34C02F2209/02C02F2209/06C02F2209/22C02F2101/16C02F2305/06C02F2209/16C02F2209/08Y02W10/10
Inventor 刘文龙李军邹金特吴淑云
Owner ZHEJIANG UNIV OF TECH
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