SBR partial nitrosation process matching anaerobic ammonium oxidation

A technology of anaerobic ammonium oxidation and nitrosation, which is applied in the field of SBR partial nitrosation matching with anaerobic ammonium oxidation, can solve the problems of increasing operating costs and secondary pollution

Active Publication Date: 2019-01-01
SHENYANG ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0002] The influent water required for the anaerobic ammonium oxidation reaction is strictly limited, and the NH in the water 4 + -N/NO 2 - The ratio of -N should be ke

Method used

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  • SBR partial nitrosation process matching anaerobic ammonium oxidation
  • SBR partial nitrosation process matching anaerobic ammonium oxidation
  • SBR partial nitrosation process matching anaerobic ammonium oxidation

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Embodiment

[0024] refer to Figure 1-3 , a kind of SBR partial nitrosation process matching anaerobic ammonia oxidation that the present invention proposes, comprises the following steps,

[0025] S1, Sludge domestication pretreatment: First, let the inoculated sludge settle for 24 hours, and there will be a large amount of floating matter on the upper layer. After removing it, add a certain amount of test water, and then expose it for 48 hours. The main purpose is to use the endogenous respiration of the microorganism itself It can be used to remove the remaining organic matter in the sludge, and finally stand for 24 hours; after standing, it is found that the color of the sludge turns brown, the measured SV value is 32%, and the sludge concentration MLSS is 3800mg / L, which shows that after being stuffed The activity of the sludge treated by exposure and static treatment has been restored to some extent, which meets the requirements for inoculation; the composition of the test water is ...

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Abstract

The invention discloses an SBR partial nitrosation process matching anaerobic ammonium oxidation. The SBR partial nitrosation process comprises the following steps: S1, sludge domestication preprocessing: firstly inoculating the sludge, standing and precipitating for 24 hours, wherein a great amount of flotages remain on the upper layer, removing, adding a given amount of test water, performing the stuffy aeration for 48 hours, removing residual organic matters in the sludge by using the endogenous respiration effect of the microorganisms, and finally standing for 24 hours. After the standing,the color of the sludge is changed to sepia, an SV value is determined as 32 percent, the sludge concentration MLSS is 3800mg/L, which shows that the activity of the sludge after the stuffy aerationand standing treatment is already restored, and the inoculation requirement can be met. At the stable operation phase, the removal rate of NH4<+>-N and the accumulation rate of NO2<->-N are respectively up to 90 percent and 80 percent or more.

Description

technical field [0001] The invention relates to the technical field of SBR partial nitrosation, in particular to an SBR partial nitrosation process matching anaerobic ammonium oxidation. Background technique [0002] The influent water required for the anaerobic ammonium oxidation reaction is strictly limited, and the NH in the water 4 + -N / NO 2 - The ratio of -N should be kept stable at about 1:1.32. If nitrite is artificially added, it will not only increase the operating cost, but also cause secondary pollution due to its biological toxicity. This requires a pre-reaction stage that can provide stable effluent, so that the NH in the effluent of this stage 4 + -N / NO 2 The ratio of -N is maintained between 1:1 and 1:1.32, which creates a partial nitrosation (Partial Nitritation, PN) process. [0003] The present invention utilizes the SBR reactor to carry out the experimental research of the partial nitrosation process. The test first starts the reactor under the cond...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/282C02F2203/004
Inventor 赵勇娇单连斌王允妹张磊魏春飞李旭光
Owner SHENYANG ACAD OF ENVIRONMENTAL SCI
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