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Autotrophic denitrification nitrogen removal sewage treatment equipment

A kind of sewage treatment equipment, autotrophic denitrification technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, biological treatment equipment, etc., can solve problems such as difficulty in adapting to water quality standards and limited denitrification effect

Pending Publication Date: 2022-05-31
重庆市环境保护工程设计研究院有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional denitrification treatment method, there is often a bottleneck of limited deni

Method used

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  • Autotrophic denitrification nitrogen removal sewage treatment equipment
  • Autotrophic denitrification nitrogen removal sewage treatment equipment
  • Autotrophic denitrification nitrogen removal sewage treatment equipment

Examples

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preparation example Construction

[0051] Another embodiment of the present invention also provides the above-mentioned preparation method of the self-active denitrification and phosphorus removal carrier material, including the following steps S100-S300.

[0052] Step S100: Mix and granulate weakly alkaline mineral materials, iron-based materials, and microbial growth promoters to prepare raw meal pellets.

[0053] In some of these embodiments, the particle diameters of the weakly alkaline mineral material, the iron-based material and the microbial growth promoter are each independently within the range of 100 mesh to 200 mesh.

[0054] In some of the embodiments, the mass ratio of the weakly alkaline mineral material, the iron-based material and the microbial growth promoter is (5-10):(1-5):(1-5).

[0055] In some of the embodiments, the particle size of the raw meal balls is 3mm-5mm. Optionally, the particle size of the raw meal balls is 3mm, 3.5mm, 4mm, 4.5mm or 5mm.

[0056] Step S200: heating the sulfur...

Embodiment 1

[0154] The preparation process of the self-active nitrogen and phosphorus removal carrier material in this embodiment is as follows:

[0155] (1) Mix porous biochar with a mass ratio of 1:5 and liquid sulfur, and then cool and shape it so that the sulfur can wrap the porous biochar to obtain a sulfur-containing carrier.

[0156] (2) According to the mass ratio of 10:5:1, sodium thiosulfate, magnesium chloride and ferrous sulfate are mixed and compounded to obtain a microbial growth promoter for use.

[0157] (3) Mix magnesium hydroxide, reduced zero-valent iron powder, and microbial growth promoter according to the mass ratio of 5:1:1, and press them into raw meal balls with a particle size of 3mm.

[0158] (4) Heat the sulfur-containing carrier prepared in step (1) at 130° C. for 20 minutes until the sulfur is in a molten state.

[0159] (5) Add the raw meal balls prepared in step (3) and the sulfur-containing carrier in step (4) according to the mass ratio of 1:2 into the b...

Embodiment 2

[0161] The preparation process of the self-active nitrogen and phosphorus removal carrier material in this embodiment is as follows:

[0162] (1) Mix porous biochar with a mass ratio of 1:5 and liquid sulfur, and then cool and shape it so that the sulfur can wrap the porous biochar to obtain a sulfur-containing carrier.

[0163] (2) According to the mass ratio of 10:5:1, sodium thiosulfate, magnesium chloride and ferrous sulfate are mixed and compounded to obtain a microbial growth promoter for use.

[0164] (3) Mix magnesium hydroxide, reduced zero-valent iron powder, and microbial growth promoter according to the mass ratio of 5:1:1, and press them into raw meal balls with a particle size of 3mm.

[0165] (4) Heat the sulfur-containing carrier prepared in step (1) at 130° C. for 20 minutes until the sulfur is in a molten state.

[0166] (5) Add the raw meal pellets prepared in step (3) and the sulfur-containing carrier in step (4) according to a mass ratio of 1:3 into a boi...

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Abstract

The invention relates to autotrophic denitrification nitrogen removal sewage treatment equipment. The sewage treatment equipment comprises an autotrophic denitrification tank, wherein a denitrification filler layer is arranged in the autotrophic denitrification tank. Filler of the denitrification filler layer comprises a self-active nitrogen and phosphorus removal carrier material, the self-active nitrogen and phosphorus removal carrier material comprises a sulfur-containing carrier, a weakly alkaline mineral material, an iron-based material and a microbial growth promoter, and the sulfur-containing carrier is filled with the weakly alkaline mineral material, the iron-based material and the microbial growth promoter in a dispersed mode. The high nitrogen removal efficiency and the stable nitrogen removal effect can be obtained, so that the nitrogen removal efficiency of the sewage treatment equipment can be effectively improved, and meanwhile, the synchronous phosphorus removal effect can also be obtained.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an autotrophic denitrification and denitrification sewage treatment equipment. Background technique [0002] Nitrogen pollutants are one of the key factors leading to eutrophication of water bodies. Regarding the treatment of nitrogen-containing sewage, sewage treatment plants generally implement the first-class A standard in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002). Among them, the concentration of TN shall not exceed 15mg / L. Reducing nitrogen content in sewage is of great significance to environmental protection. [0003] In the traditional denitrification treatment methods, there is often a bottleneck of limited denitrification effect, and it is difficult to adapt to the continuously improving water quality standards. Contents of the invention [0004] Based on this, it is necessary to provide an autotrophic denitrificat...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/10C02F101/16C02F101/38
CPCC02F3/30C02F2101/105C02F2101/16C02F2101/38C02F2203/006Y02W10/10
Inventor 张柳乔王磊王胜凡左晶蔡小滨李建毛克威
Owner 重庆市环境保护工程设计研究院有限公司
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