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Device and method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation

A technology of nitrifying anaerobic methane and anaerobic ammonia oxidation, which is applied in anaerobic digestion treatment, waste fuel and other directions, can solve the problems of slow growth and difficulty in enrichment and cultivation of Anammox bacteria and N-DAMO bacteria, and achieves the solution of organic carbon source. insufficient effect

Active Publication Date: 2013-09-04
BEIJING UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0010] However, due to the slow growth of Anammox bacteria and N-DAMO bacteria, it is difficult to enrich and cultivate. In addition to strictly controlling the anaerobic environment, it is necessary to control the operating parameters, including CH 4 Ventilation volume, influent NO 2 - -N concentration, pH, free ammonia (FA), free nitrous acid (FNA), HRT, SRT and temperature are strictly controlled

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  • Device and method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation
  • Device and method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation
  • Device and method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation

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Embodiment 1

[0042] see figure 1 As shown in the figure, a device based on the synergistic effect of Anammox and N-DAMO bacteria to achieve greenhouse gas emission reduction in sewage biological treatment, mainly set up a membrane biofilm reactor 1, and configure an inlet tank 2, an automatic control system 25 and an outlet tank 6. The water inlet tank 2 is connected to the membrane biofilm reaction 1 through the inlet water pump 3 . The membrane biofilm reactor 1 is provided with a membrane module 4 , and the outlet end above the membrane module is connected to the outlet pump 5 through a pipeline, and the outlet water finally enters the outlet tank 6 . The acid-base solution in the acid buffer bottle 9 and the alkaline buffer bottle 10 are respectively added into the membrane biofilm reactor 1 through the acid-base dosing peristaltic pump 11 to adjust the pH level in the membrane biofilm reactor 1 . The methane in the methane gas storage tank 12 is adjusted by the pressure reducing val...

Embodiment 2

[0044] see figure 2 As shown, a method to achieve simultaneous anammox and denitrification anaerobic methane oxidation, using the first culture strategy of culturing separately and then co-cultivating, cultivating and domesticating the symbiotic flora of Anammox and N-DAMO bacteria, To achieve simultaneous anammox and denitrification anaerobic methane oxidation processes, the strategy is divided into the following three stages:

[0045] Stage 1: First inoculate the sludge containing Anammox strains into the membrane biofilm reactor, and extract the NH containing 4+ -N and NO 2 - -N sewage is added to the membrane biofilm reactor. After the water inflow is completed, only the argon gas flowmeter is turned on instead of the methane gas flowmeter to ensure anaerobic conditions so that Anammox bacteria can metabolize NH 4 + -N and NO 2 - -N grows and reproduces; after the anammox reaction is over, turn on the outlet water pump to discharge the supernatant liquid filtered by...

Embodiment 3

[0049] The inoculated sludge for start-up and acclimation came from the sludge in the anaerobic sludge digester and the bottom sludge of a natural wetland. Anammox and N-DAMO bacteria were cultivated and acclimated using the first culture strategy of separate cultivation and then co-cultivation. The symbiotic flora can realize the simultaneous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation process, and the realization process is divided into the following three stages.

[0050] In the first stage, the NO 2 - -N concentration is 50-120mg / L, NH 4 + - Sewage with a N concentration of 50-100mg / L was added to the 10L membrane biofilm reactor SMBR. After the water inflow was completed, only the argon gas flowmeter was turned on instead of the methane gas flowmeter, and samples were taken every 2 hours for analysis NH in SMBR reactor 4 + -N and NO 2 - -N concentration, when the test result shows NH 4 + -N or NO 2 - - When the N concentration is...

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Abstract

The invention discloses a device and a method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation, and belongs to the technical field of sewage treatment. The device mainly comprises a membrane bio-film reactor, an inlet water tank, an automatic control system and an outlet water tank, wherein the membrane bio-film reactor is charged with methane and argon gas to keep the reactor in a strict anaerobic state. An independent cultivation method and a co-cultivation method are adopted in sequence for cultivating and taming symbiotic flora of Anammox and N-DAMO (Denitrificationdependent Anaerobic Methane Oxidation) bacteria, so that the synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation process is realized; or the N-DMAO is firstly cultivated independently, and then, the symbiotic flora of Anammox and N-DAMO bacteria are cultured and tamed, so that the synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation process is realized. The device and the method for realizing synchronous anaerobic ammonia oxidation and denitrification anaerobic methane oxidation disclosed by the invention can be used for realizing sewage biological denitrification by utilizing the synergistic effect of the Anammox and N-DAMO bacteria, and can be used for lowering the mission of greenhouse gases CH4 and N2O in a denitrification process.

Description

technical field [0001] The invention relates to a device and method for simultaneously realizing anaerobic ammonia oxidation and denitrification anaerobic methane oxidation in the biological denitrification process of sewage, in particular to realize the biological denitrification of sewage by utilizing the synergistic action of Anammox and N-DAMO bacteria, and can reduce the denitrification Process greenhouse gas CH 4 and N 2 The device and method for reducing O emission belong to the technical field of sewage treatment. Background technique [0002] Global warming and environmental pollution are currently hot topics of international concern. For sewage biological treatment, while preventing nitrogen and phosphorus discharge from causing water eutrophication, how to save energy consumption and reduce greenhouse gas emissions has become a key issue that needs to be solved urgently in the development of the industry. Traditional wastewater biological denitrification proces...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCY02E50/30
Inventor 郭建华彭永臻王淑莹
Owner BEIJING UNIV OF TECH
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