Method for treating sewage by enrichment culture of anaerobic ammonium oxidation bacteria

A kind of anammox bacteria and anaerobic ammonium oxidation technology, applied in aerobic and anaerobic process treatment, chemical instruments and methods, water treatment parameter control, etc., can solve the problem of long doubling time and enrichment of anammox bacteria Difficulty, slow growth rate and other problems, to achieve the effect of simple transformation

Pending Publication Date: 2020-12-29
SHENYANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, anammox bacteria are autotrophic anaerobic bacteria, with slow growth rate, long doubling time and low cell yield, which makes the enrichment of anammox bacteria very difficult, which largely limits the practical application of anammox. application

Method used

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  • Method for treating sewage by enrichment culture of anaerobic ammonium oxidation bacteria
  • Method for treating sewage by enrichment culture of anaerobic ammonium oxidation bacteria
  • Method for treating sewage by enrichment culture of anaerobic ammonium oxidation bacteria

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Embodiment 1

[0038] 1) Startup steps

[0039] First start the reactor, the inoculum of the SNAP reactor adopts the bacterial sludge enriched by the SNAP reactor cultivated in this laboratory and operated for more than one year, the MLSS is 10.1 g / L, the MLSS is 12.5 g / L, and the sludge color It is reddish brown. by NaHCO 3 As a pH regulator, ensure that the pH of the reactor is maintained at about 7.5-7.8, and the temperature of the reactor is controlled at 33-35°C. The nutrient solution matrix KH added in the experiment 2 PO 4 136 g / L, trace element I is FeSO 4 18 g / L and EDTA 10 g / L, mineral elements KCl1.4 g / L, NaCl 1 g / L, MgSO 4 1 g / L, CaCl 2 1.4 g / L, trace element II is MnCl 2 4H 2 O 9.9 mg / L, NiCl 2 ·6H 2 O 1.9 mg / L, Na 2 MoO 4 2H 2 O 2.2 mg / L, ZnSO 4 ·7H 2 O 4.3 mg / L, CaCl 2 ·6H 2 O 12mg / L, CuSO 4 ·5H 2 O 12.5 mg / L, H 3 BO 4 0.14 mg / L. In the process of water distribution, 0.5 ml of substrate, 0.5 ml of trace element I, 0.1 ml of trace element II, and 1 ml...

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Abstract

The invention discloses a method for treating sewage by enrichment culture of anaerobic ammonium oxidation bacteria, and relates to a method for treating sewage, an integrated semi-nitrification anaerobic ammonium oxidation reactor is used in the method, and a water inlet tank is connected with a water inlet at the bottom of a reactor main body through a peristaltic pump; a filler frame is arranged in the reactor main body, an aeration head is arranged at the bottom in the reactor, the aeration amount of the aeration head is controlled by an aeration pump, and a pH online tester and a heatingrod are arranged at the middle upper part; the reactor main body is connected with an alkali barrel, and alkali is provided for the interior of the reactor through a liquid supplementing pump; and thereactor main body is connected with a sedimentation tank through a water outlet. When the system is used for sewage treatment, the device needs to be started firstly, then the ammonia nitrogen waterinlet load is increased, and humic acid is added in the experimental stage. According to the method, a proper amount of humic acid is added into the integrated semi-nitrification anaerobic ammonia oxidation reactor, and the proportion of anaerobic ammonia oxidation bacteria is increased, so that anaerobic ammonia oxidation bacteria are enriched, the denitrification capacity is improved, and the ammonia nitrogen removal rate can reach 95%.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a method for enriching and cultivating anaerobic ammonia oxidizing bacteria to treat sewage. Background technique [0002] With the rapid development of my country's fertilizer, food, petroleum, and chemical industries, the discharge of ammonia nitrogen wastewater has increased rapidly, leading to eutrophication of water bodies, which has led to an imbalance in the distribution of species in aquatic ecosystems. The national "Thirteenth Five-Year Plan" requires that by 2020, the total discharge of ammonia nitrogen will be controlled at 2.07 million tons, which is 10% lower than that in 2015. Due to strict ammonia nitrogen emission standards, traditional denitrification technologies have been difficult to meet high treatment requirements. Therefore, the development of efficient and economical denitrification methods has become a research hotspot in the field of wastewater treatment in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/301C02F2101/16C02F2209/06
Inventor 苑春莉鲁长昊朱彤
Owner SHENYANG UNIV
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