Self-active denitrification carrier material and preparation method and application thereof

A carrier material and denitrification technology, applied in chemical instruments and methods, anaerobic digestion treatment, biological water/sewage treatment, etc., can solve the problem of low denitrification rate, achieve the effect of improving stability and increasing denitrification rate

Inactive Publication Date: 2020-11-24
深圳市播绿者生态科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the present invention provides a self-active denitrification carrier material and its preparation method to solve the problem of low denitrification rate of the existing denitrification carrier material

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  • Self-active denitrification carrier material and preparation method and application thereof
  • Self-active denitrification carrier material and preparation method and application thereof

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preparation example Construction

[0036] The embodiment of the present invention also provides the preparation method of the self-active denitrification carrier material as described above, refer to figure 1 , the preparation method comprises the steps of:

[0037]S10. Stir and mix the sulfur-based powder material, the iron-based powder material and the carbonate powder material to obtain a mixed powder material.

[0038] Specifically, the mass ratio among the sulfur-based powder material, the iron-based powder material and the carbonate powder material is selected to be in the range of (1-20):(1-10):(1-5) Inside, the particle size of each material powder is selected within the range of 100-200 mesh.

[0039] S20. Heating the mixed powder material to melt the sulfur-based powder material, stirring to disperse the iron-based powder material and carbonate powder material in the melt to obtain a molten mixture.

[0040] In a preferred solution, the heating temperature for heating the mixed powder material is 14...

Embodiment 1

[0048] The preparation process of the self-active denitrification carrier material in this embodiment is as follows:

[0049] 1. Mix elemental sulfur powder, reduced zero-valent iron powder and magnesite powder uniformly in a mass ratio of 3:1:1 to obtain a mixed powder material.

[0050] 2. Put the mixed powder material in a heating kettle, heat and melt the elemental sulfur powder in the mixture at 150°C to form liquid sulfur, and keep the temperature of the heating kettle at 150°C.

[0051] 3. Stir and mix the mixture at a frequency of 120r / min, so that the reduced zero-valent iron powder and magnesite powder are evenly dispersed in the liquid sulfur, and the CO is introduced at a low speed. 2 gas that encases CO in a liquid sulfur mixture 2 bubble.

[0052] 4. Wrap the CO 2 The mixed solution of bubbles is uniformly and stably injected into the cooling water through the mixed solution distributor, and the injection rate is 5mL / min.

[0053] 5. Cool the dripped mixed so...

Embodiment 2

[0055] The preparation process of the self-active denitrification carrier material in this embodiment is as follows:

[0056] 1. Mix elemental sulfur powder, sponge iron powder and magnesite powder evenly according to the mass ratio of 3:1:1 to obtain a mixed powder material.

[0057] 2. Put the mixed powder material in a heating kettle, heat and melt the elemental sulfur powder in the mixture at 150°C to form liquid sulfur, and keep the temperature of the heating kettle at 150°C.

[0058] 3. Stir and mix the mixture at a frequency of 120r / min, so that the reduced zero-valent iron powder and magnesite powder are evenly dispersed in the liquid sulfur, and the CO is introduced at a low speed. 2 gas that encases CO in a liquid sulfur mixture 2 bubble.

[0059] 4. Wrap the CO 2 The mixed solution of bubbles is uniformly and stably injected into the cooling water through the mixed solution distributor, and the injection rate is 5mL / min.

[0060] 5. Cool the dripped mixed soluti...

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Abstract

The invention provides a self-active denitrification carrier material. The self-active denitrification carrier material comprises a granular matrix formed by melting and cooling a sulfur-based powdermaterial, an iron-based powder material and a carbonate powder material, wherein the granular matrix is filled with the iron-based powder material and the carbonate powder material in a dispersedly-coupled mode. The preparation method of the self-active denitrification carrier material comprises the steps: S10, the sulfur-based powder material, the iron-based powder material and the carbonate powder material are stirred and mixed to obtain a mixed powder material; S20, the mixed powder material is heated to melt the sulfur-based powder material, stirring is conducted to disperse the iron-basedpowder material and the carbonate powder material into a melt, and a molten mixture is obtained; and S30, the molten mixture is distributed and injected into cooling liquid to be cooled into a granular material, and then after filtering and drying, the self-active denitrification carrier material is prepared. According to the denitrification carrier material provided by the invention, the components are subjected to melting coupling and then granulated to form the uniform and stable carrier material, and the denitrification performance can be improved when the self-active denitrification carrier material is applied to the field of water treatment.

Description

technical field [0001] The invention belongs to the technical field of sewage (waste) water treatment, and in particular relates to a self-activated denitrification carrier material and its preparation method and application. Background technique [0002] The accumulation of nitrogen and other nutrients in water bodies leads to eutrophication and harms aquatic organisms. Groundwater nitrogen pollution in many cities tends to increase year by year. Rural areas generally use shallow groundwater for drinking water, but excessive use of fertilizers and pesticides, sewage irrigation, etc. cause nitrogen source pollution, resulting in groundwater in many areas being polluted by varying degrees of nitrate nitrogen salts. Nitrate nitrogen salts can cause methemoglobinemia and induce a variety of cancers, and have adverse effects on human blood vessels, nerves and cardiovascular systems in large doses. Therefore, the pollution of nitrate nitrogen salts has aroused widespread concern ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
CPCC02F3/2806
Inventor 庄毅璇王胜凡王磊林巍严声乐
Owner 深圳市播绿者生态科技股份有限公司
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