Denitrification system for synchronously achieving nitrification and denitrification and application method thereof

A technology of denitrification and anaerobic denitrification, applied in the field of denitrification system that simultaneously realizes nitrification and denitrification, can solve the problems that affect the rate and quality of denitrification, and it is difficult to realize, so as to achieve a good growth and enrichment environment and avoid sediment pollution Slime, the effect of high efficiency in retaining microorganisms

Pending Publication Date: 2019-05-31
CENT SOUTH UNIV
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Problems solved by technology

[0003] The existing denitrification process has the following disadvantages: 1. What enters into the co-cultivation environment of denitrifying anaerobic methane oxidizing bacteria and anammox oxidizing bacteria is the effluent after nitrification, and the nitrifying bacteria contained therein will also enter into In the anaerobic

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  • Denitrification system for synchronously achieving nitrification and denitrification and application method thereof

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Embodiment 1

[0043] Such as figure 1 As shown, this embodiment provides a denitrification system that simultaneously realizes nitrification and denitrification, including an aerobic nitrification reaction device, a filter device and an anaerobic denitrification device;

[0044] The aerobic nitrification reaction device includes an open double-layer glass bottle reactor 1, a feeding tank 2 and a first water outlet bottle 3. The inner layer of the open double-layer glass bottle reactor 1 is used for enrichment growth and nitrification of aerobic nitrification bacteria In the reaction place, the interlayer of the open double-layer glass bottle reactor 1 is connected with constant temperature water to ensure the constant temperature reaction. A nitrification reaction inlet pump 4 is arranged between the feeding tank 2 and the double-layer glass bottle reactor 1. A water pump 5 for nitrification reaction is provided between the water bottle 3 and the double-layer glass bottle reactor 1 .

[00...

Embodiment 2

[0054] This embodiment provides an application method of a denitrification system that simultaneously realizes nitrification and denitrification, a high-efficiency system that can simultaneously realize nitrification and denitrification anaerobic methane oxidation and anammox, and can completely remove ammonium nitrogen in water. A sustainable approach to denitrification, including the following steps:

[0055] (1) Inoculation of the reactor: Put the aerobic biological filler into the open double-layer glass bottle reactor, let it grow and enrich the nitrifying bacteria by itself, and the domesticated denitrifying anaerobic methane oxidizing archaea, denitrifying anaerobic bacteria The flocculent sludge of oxymethane oxidizing bacteria (also known as DAMO functional microorganisms) and anaerobic ammonium oxidation (Anammox functional microorganisms) functional microorganisms is inoculated into the hollow fiber membrane bioreactor, wherein the nitrogen in the feeding tank connec...

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Abstract

The invention discloses a denitrification system for synchronously achieving nitrification and denitrification and an application method thereof and belongs to the technical field of sewage denitrification treatment. The denitrification system comprises an aerobiotic nitration reaction device, a filtering device and an anaerobic denitrification device. A nitrification reactor is connected with ananaerobic denitrification reactor, single ammonium nitrogen is adopted as a nitrogen source, methane is adopted as a carbon source, nitrification, denitrification, anaerobic methane oxidation and anaerobic ammoxidation are synchronously achieved, and high-efficiency denitrification is achieved. A measure of controlling dissolved oxygen is improved. After 4 hours of feeding water into the nitrification reactor, the dissolved oxygen in the nitrification reactor is reduced to the minimum so as to control the dissolved oxygen in the denitrification part to be 0 mg/L and achieve a strict anaerobicenvironment. A measure for controlling nitrifying bacteria to enter the anaerobic reactor is improved, the filtering device is newly added, the number of aerobic bacteria in the anaerobic denitrification environment is decreased, and the competition of the aerobic bacteria with DAMO microbes and Anammox functional microbes is reduced.

Description

technical field [0001] The invention belongs to the technical field of sewage denitrification treatment, and in particular relates to a denitrification system and an application method thereof for synchronously realizing nitrification and denitrification. Background technique [0002] In recent years, research on biological denitrification has focused on a new, low-cost and high-efficiency process, that is, the combination of denitrification, anaerobic methane oxidation and anaerobic ammonium oxidation. Under normal circumstances, urban sewage contains a high concentration of ammonium nitrogen, so the first step of this process is to partially oxidize ammonia nitrogen to nitrate nitrogen, and then through the DAMO-Anammox functional microbial process, methane is used as the only carbon source. Under certain circumstances, the nitrogen elements in the residual ammonium ammonia, nitrate nitrogen and nitrite nitrogen are removed. [0003] The existing denitrification process h...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/02C02F3/28C02F9/14
CPCY02W10/10
Inventor 石英姚小京郭晓婷孙成杜晶黄麟淇
Owner CENT SOUTH UNIV
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