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Method for intensifying activity of anammox microorganism by fixed effect of active carbon

A technology of anaerobic ammonium oxidation and microbial activity, which is applied in the field of strengthening anammox microbial activity, can solve the problems of slow growth, difficult cultivation, and easily inhibited activity of anaerobic ammonium oxidation microorganisms, so as to resist adverse environmental influences and reduce Impact, good impact resistance effect

Inactive Publication Date: 2011-07-06
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to recent studies, it has been shown that anammox microorganisms are active only under high concentration conditions, anammox microorganisms grow slowly, are difficult to cultivate, and their activity is easily inhibited; the application of this process in ordinary reactors requires returning sludge to To reduce the impact of sludge loss, how to enhance its activity and increase the concentration of anammox microorganisms has become a difficulty that must be overcome in the practical application of anammox process

Method used

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  • Method for intensifying activity of anammox microorganism by fixed effect of active carbon
  • Method for intensifying activity of anammox microorganism by fixed effect of active carbon
  • Method for intensifying activity of anammox microorganism by fixed effect of active carbon

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Coal columnar activated carbon is used to fix and adsorb anaerobic ammonium oxidation sludge. Coal-based columnar activated carbon is made of high-quality anthracite and refined by advanced technology. The appearance is black cylindrical particles with reasonable pore structure, good adsorption performance, and mechanical properties High strength, easy repeated regeneration, low cost and so on. It is used in the purification of poisonous gas in gas masks, waste gas treatment, purification of industrial and domestic water, solvent recovery, etc. The physical and chemical properties of coal-based columnar activated carbon were analyzed, and the analysis results are shown in Table 1:

[0028] Analysis Project

Test Data

Analysis Project

Test Data

iodine value

>800mg / g

strength

＞92%

specific surface area

>850m 2 / g

methylene blue value

120-150mg / g

total pore volume

>0.8cm 3 / g

Chlorine adsorption rate

...

Embodiment 2

[0032] (1) Acquisition of fixed materials: Pre-treatment of coal-based columnar activated carbon before use: first rinse with tap water to remove impurities and dust, and rinse until the effluent is clear. Then soak in 10% hydrochloric acid solution for 24 hours, rinse with tap water and then soak in 4% sodium hydroxide for 24 hours, then rinse with tap water and distilled water, soak in normal saline for 24 hours, dry, put in anaerobic ammonia oxidation Soak in basic inorganic salt solution for 20 hours and set aside. The basic inorganic salt solution is: KHCO 3 0.60gL -1 , MgSO 4 ·7H 2 O 0.30 gL -1 , KH 2 PO 4 0.020gL -1 , CaCl 2 0.1gL -1 , NaNO 2 0.365gL -1 , (NH 4 ) 2 SO 4 0.33gL -1 . (2) Take out the anaerobic ammonium oxidation sludge, wash it twice with a phosphate buffer solution of pH 7.5, centrifuge it, put it into an anammox basic inorganic salt solution for cultivation, and add 25g of activated carbon to the sludge according to the mass ratio o...

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Abstract

The invention belongs to the field of water treatment, and discloses a method for intensifying the activity of anammox microorganism by the fixed effect of the active carbon. The method mainly comprises the steps of: soaking the active carbon by anammox-based inorganic salt solution, adding the treated active carbon and anammox sludge into the anammox-based inorganic salt solution, and cultivating to obtain the anammox microorganism which is stably coupled to the active carbon. Aiming the waste water with low carbon nitrogen ratio, the invention provides a technology which takes the active carbon as a carrier, intensifies the activity of the anammox microorganism, and resists the influence caused by the bad environment. The method can run for a long time more stably, can and accord with the condition for practically running and managing a sewage plant. The active carbon has a certain capability for absorbing the organic matter, so that the influence to the anammox sludge caused by the organic matter and the other toxic matters is reduced, and the execution of the anammox reaction is intensified.

Description

technical field [0001] The invention belongs to the field of water treatment, or environmental engineering, or environmental microorganisms, and relates to a method for strengthening the activity of anaerobic ammonium oxidation microorganisms. Background technique [0002] There are a lot of nitrogen-containing pollutants and a small amount of organic matter in modern industrial and domestic sewage, which can easily lead to eutrophication of water bodies and seriously endanger the environment. The most commonly used traditional denitrification technology is nitrification and denitrification. Traditional denitrification technology needs to add additional organic carbon sources to ensure the removal efficiency of total nitrogen, while nitrification technology requires a high aeration rate to meet the reaction of ammonia nitrogen conversion to nitrate, so the denitrification process has high operating costs and can It consumes a lot. [0003] With the discovery of anammox mic...

Claims

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Application Information

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IPC IPC(8): C02F3/28
Inventor 贾晓珊钟玉鸣刘金苓张再利
Owner SUN YAT SEN UNIV
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