Preservation method for anaerobic ammonium oxidation granular sludge

An anaerobic ammonium oxidation and granular sludge technology, which is applied in anaerobic digestion treatment, biochemical equipment and methods, biological sludge treatment, etc. Problems such as obstacles to popularization and application, and long time-consuming startup and inhibited recovery can achieve the effect of avoiding adverse effects, facilitating long-term storage and maintaining activity.

Active Publication Date: 2013-05-08
江苏清材智能制造有限公司
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Problems solved by technology

Although anammox granular sludge can be enriched from nitrification, denitrification, and methanogenic sludge through domestication, it is difficult to cultivate sludge due to the low cell yield and slow growth of anammox bacteria. Anammox activity is difficult to recover after being inhibited, so the start-up and inhibited recovery of the anammox process take a long time
This is a great obstacle to the popularization and application of the anaerobic ammonium oxidation process

Method used

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  • Preservation method for anaerobic ammonium oxidation granular sludge

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Embodiment 1

[0016] For the structure of the anaerobic ammonium oxidation granular sludge storage container, see figure 1 , which has a cylindrical or cuboid container body 1, a reactor base 2, a mud discharge port 3 below the container body, an inert gas buffer bag 4 above, a feeding (nutrient or sludge) port 5, the container body 1 and the inert The gas buffer bag 4 is connected through the exhaust pipe 6, and three water discharge valves 7 are scattered on the side wall of the container, and the sludge released from the mud discharge port 3 is put into the mud receiving bucket 8, and the inert gas buffer bag 4 is provided with a plus / The exhaust port 9 is decided to add inert gas or exhaust gas to the inert gas buffer bag 4 according to the actual situation.

[0017] Nutrients (or sludge) are added into the closed container 1 through the feeding port 5, and the anammox sludge in the container 1 consumes the matrix to maintain its anammox activity. The nitrogen produced by the anaerob...

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Abstract

The invention provides a preservation method for anaerobic ammonium oxidation granular sludge. The method comprises the following steps of: storing the sludge to be preserved in a closed container, keeping the closed container in anaerobic condition at normal temperature, and controlling pH to be in a rang from 7.0-9.0; and adding nutrient solution and fresh anaerobic ammonium oxidation granular sludge in the container in at regular intervals so as to ensure the anaerobic ammonium oxidation activity of the preserved sludge. The method can preserve the anaerobic ammonium oxidation granular sludge for a longer term at normal temperature and also can maintain higher anaerobic ammonium oxidation activity, once the method is used, an anaerobic ammonium oxidation reactor can be started more quickly, and higher denitrification performance can be realized within relatively less time; the time interval for adding the nutrient matrix is longer, so that negative influence on the preserved sludgecaused by frequent disturbance is avoided, and a small quantity of fresh anaerobic ammonium oxidation granular sludge is added at regular intervals so as to provide some growth factors for the anaerobic ammonium oxidation bacteria, which benefits the maintenance of the activity of the anaerobic ammonium oxidation bacteria and facilitates the long-term preservation of the granular sludge.

Description

(1) Technical field [0001] The invention relates to a preservation method of anaerobic ammonia oxidation granular sludge. (2) Background technology [0002] Anaerobic ammonium oxidation process is a new type of biological denitrification process, which has an important application prospect in the prevention and treatment of water eutrophication. Anammox bacteria are the main microorganisms in the anammox denitrification process. To obtain high denitrification performance, it is necessary to have a sufficient number of anammox bacteria and high anammox activity. Although anammox granular sludge can be enriched from nitrification, denitrification, and methanogenic sludge through domestication, it is difficult to cultivate sludge due to the low cell yield and slow growth of anammox bacteria. The anammox activity is difficult to recover after being inhibited, so the start-up and inhibited recovery of the anammox process take a long time. This is a great obstacle to the popular...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C02F11/04C02F3/28C12N11/00
Inventor 金仁村阳广凤贾秀英俞津津马春
Owner 江苏清材智能制造有限公司
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