A 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, and can solve problems such as increased operating costs and secondary pollution

Active Publication Date: 2022-02-01
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 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.

Method used

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  • A SBR partial nitrosation process matching anaerobic ammonium oxidation
  • A SBR partial nitrosation process matching anaerobic ammonium oxidation
  • A 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 a SBR partial nitrosation process matching with anaerobic ammonium oxidation, which includes the following steps, S1, sludge domestication pretreatment: first, the inoculation sludge is statically settled for 24 hours, and there will be a large amount of floating matter in the upper layer, which is added after removal A certain amount of test water was exposed for 48 hours. The main purpose is to use the endogenous respiration of microorganisms to remove the residual organic matter in the sludge, and finally stand for 24 hours; after standing, the color of the sludge turns brown. , the measured SV value was 32%, and the sludge concentration MLSS was 3800mg / L, which indicated that the activity of the sludge after suffocation and static treatment had been restored, which met the requirements for inoculation. In the stable operation stage of the present invention, NH 4 + ‑N removal rate and NO 2 ‑ ‑N accumulative rates reached over 90% and 80% respectively.

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 has 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 conditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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