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Method for storing and exciting anaerobic ammonium oxidation sludge

An anaerobic ammonia oxidation and sludge technology, applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of long start-up time, slow recovery, easy process instability, etc. The effect of short activation time, high activity retention rate and broad application prospects

Active Publication Date: 2012-08-08
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the shortcoming of the process start-up time is long, and the anammox bacteria are extremely sensitive to environmental conditions such as temperature, salinity, pH, etc., and the process is prone to instability and slow recovery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Preservation method of anaerobic ammonium oxidation sludge: first, wash the anaerobic ammonium oxidation sludge that needs to be preserved twice with inorganic salt solution, put it in a storage container, add inorganic salt solution to adjust the volatility of anaerobic ammonium oxidation sludge The concentration of suspended solids is 10 g / L. Use 1 mol / L NaOH or HCl solution to adjust the pH value of the liquid in the storage container to 7.5, then fill it with argon, seal the storage container and store it in a refrigerator at 0°C.

[0014] After the first month of storage, its activity was 17.8mgN·(gVSS·h) -1 , the activity retention rate was 82.8%, it can be considered that this method can effectively preserve anammox sludge.

[0015] Activation method of anammox sludge: take out part of anammox sludge from the storage container as needed, put it in the activation container, wash it twice with inorganic salt solution, add nutrients equivalent to 15% of the effectiv...

Embodiment 2

[0020] Preservation method of anaerobic ammonium oxidation sludge: first, wash the anaerobic ammonium oxidation sludge that needs to be preserved three times with inorganic salt solution, put it in a storage container, add inorganic salt solution to adjust the volatility of anaerobic ammonium oxidation sludge The concentration of suspended solids is 20 g / L. Use 1.5 mol / L NaOH or HCl solution to adjust the pH value of the liquid in the storage container to 7.8, then fill it with argon, seal the storage container and store it in a refrigerator at 1 °C.

[0021] After the first month of storage, its activity was 18.1mgN·(gVSS·h) -1 , the activity retention rate was 84.2%, it can be considered that this method can effectively preserve anammox sludge.

[0022]Activation method of anaerobic ammonium oxidation sludge: Take out part of anaerobic ammonium oxidation sludge from the storage container as needed, put it in the activation container, wash it with inorganic salt solution for ...

Embodiment 3

[0027] Preservation method of anaerobic ammonium oxidation sludge: first, wash the anaerobic ammonium oxidation sludge that needs to be preserved 4 times with inorganic salt solution, put it in a storage container, add inorganic salt solution to adjust the volatility of anaerobic ammonium oxidation sludge The concentration of suspended solids is 30g / L. Use 2mol / L NaOH or HCl solution to adjust the pH value of the liquid in the storage container to 8.0, then fill it with argon, seal the storage container and store it in a refrigerator at 4°C.

[0028] After the first month of storage, its activity was 17.9mgN·(gVSS·h) -1 , the activity retention rate was 83.3%, it can be considered that this method can effectively preserve anammox sludge.

[0029] Activation method of anaerobic ammonium oxidation sludge: take out part of anaerobic ammonium oxidation sludge from the storage container as needed, put it in the activation container, wash it with inorganic salt solution for 4 times,...

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Abstract

The invention relates to a method for storing and exciting anaerobic ammonium oxidation sludge. The method for storing the anaerobic ammonium oxidation sludge comprises the steps as follows: firstly, washing the anaerobic ammonium oxidation sludge needed to be stored by an inorganic salt solution, and placing in a storage container; secondly, adding the inorganic salt solution for adjusting the volatile suspended solid concentration of the anaerobic ammonium oxidation sludge to be 10-36 g / L and the pH value to be 7.5-8.0; thirdly, filling argon gas; and lastly, sealing the storage container, and storing in a refrigerator of 0-4 DEG C. The method for exciting the anaerobic ammonium oxidation sludge comprises the steps as follows: taking out the anaerobic ammonium oxidation sludge, washing by the inorganic salt solution, adding a nutrient solution, filling up distillation water into an excitation container, adjusting the pH value to be 7.0-7.5, filling the argon gas, vibrating for cultivation, sampling and measuring the concentrations of NH4+-N and NO2--N in the cultivation process, and adding a matrix concentration solution as needed. The method has the advantages of simple equipment requirements, higher activity retention rate, shorter excitation time and better excitation effect.

Description

technical field [0001] The invention relates to a method for preserving and activating anaerobic ammonium oxidation sludge, which belongs to the field of environmental protection. Background technique [0002] Anaerobic ammonium oxidation is a new type of efficient biological denitrification process, which can not only save the oxygenation energy consumption of the nitrification reaction in the traditional denitrification process and the exogenous organic electron donors that need to be added in the denitrification reaction, but also improve the yield of the nitrification reaction. Acid, denitrification and alkali production need to be neutralized. Reduce the demand for chemical reagents and prevent possible secondary pollution. It has received high attention since its inception. [0003] Anammox bacteria belong to Planctomycetes and are chemoautotrophic organisms with slow growth. Therefore, the shortcoming of the long start-up time of the process is caused, and the anam...

Claims

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Application Information

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IPC IPC(8): C02F11/00
Inventor 金仁村马春阳广凤俞津津邢保山张倩倩
Owner HANGZHOU NORMAL UNIVERSITY
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