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Carbon source-sulfur composite material for autotrophic denitrification and denitrification, preparation method and application

An autotrophic denitrification and composite material technology, which is applied in the field of preparation of carbon source-sulfur composite materials for autotrophic denitrification and denitrification, and can solve the problems of low strength, intolerant of long-term immersion in sewage, intolerant of gas-water backwashing, etc. , to achieve the effect of improving strength and toughness, excellent resistance and corrosion resistance

Active Publication Date: 2022-07-05
无锡映川环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a carbon source-sulfur composite material for autotrophic denitrification and denitrification, which can solve the technical problems of low strength of existing autotrophic denitrification fillers, resistance to long-term immersion in sewage, and resistance to air-water backwashing

Method used

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  • Carbon source-sulfur composite material for autotrophic denitrification and denitrification, preparation method and application
  • Carbon source-sulfur composite material for autotrophic denitrification and denitrification, preparation method and application
  • Carbon source-sulfur composite material for autotrophic denitrification and denitrification, preparation method and application

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Embodiment 1

[0034] A carbon source-sulfur composite material for autotrophic denitrification and denitrification is prepared from the following raw materials in parts by weight: 60 parts of sulfur, 10 parts of coarse aggregate, 20 parts of filler, 3 parts of sulfur modifier and toughening The content of sulfur in the sulfur is not less than 95%, the coarse aggregate is limestone of 40-80 mesh, and the filler is calcium carbonate powder of 325 mesh; the sulfur modifier is composed of 1.5 parts by weight of dicyclopentadiene It is mixed with 1.5 parts of cyclopentadiene; the toughening agent is paraffin.

[0035] The above-mentioned preparation method of carbon source-sulfur composite material for autotrophic denitrification and denitrification comprises the following steps:

[0036] (1) At 1.5m 3 Put 600 kg of sulfur particles into the heated stirring tank, set the temperature in the tank to 130 °C, turn on the heating device, and keep stirring during the heating process to prevent local ...

Embodiment 2

[0045] A carbon source-sulfur composite material for autotrophic denitrification and denitrification is prepared from the following raw materials in parts by weight: 50 parts of sulfur, 20 parts of coarse aggregate, 30 parts of filler, 2 parts of sulfur modifier and toughening The content of sulfur in the sulfur is not less than 95%, the coarse aggregate is 100-120 mesh limestone, and the filler is 800 mesh heavy calcium carbonate powder; the sulfur modifier is dicyclopentadiene; the toughening agent is Polysulfide rubber.

[0046] The above-mentioned preparation method of carbon source-sulfur composite material for autotrophic denitrification and denitrification comprises the following steps:

[0047] (1) At 1.5m 3 Put 500 kilograms of sulfur particles into the heated stirring tank, set the temperature in the tank to 135 °C, turn on the heating device, and continuously stir during the heating process to prevent local overheating and scorching of the sulfur;

[0048] (2) aft...

Embodiment 3

[0055] A carbon source-sulfur composite material for autotrophic denitrification and denitrification is prepared from the following raw materials in parts by weight: 60 parts of sulfur, 10 parts of coarse aggregate, 30 parts of filler, 2.5 parts of sulfur modifier and toughening The content of sulfur in sulfur is not less than 95%, the coarse aggregate is 80-120 mesh dolomite sand, and the filler is 400 mesh heavy calcium carbonate powder; the sulfur modifier is dicyclopentadiene; toughening The agent is polyethylene resin.

[0056] The above-mentioned preparation method of carbon source-sulfur composite material for autotrophic denitrification and denitrification is characterized in that it comprises the following steps performed in sequence:

[0057] (1) At 2m 3 Put 600 kg of sulfur particles into the heated stirring tank, set the temperature in the tank to 130 °C, turn on the heating device, and keep stirring during the heating process to prevent local overheating and scor...

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Abstract

The invention provides a carbon source-sulfur composite material for autotrophic denitrification and denitrification, a preparation method and an application, which can solve the problem that the existing autotrophic denitrification filler has low strength, is not resistant to long-term immersion in sewage, and is not resistant to gas water backwashing technical issues. A carbon source-sulfur composite material for autotrophic denitrification and denitrification, characterized in that it is mainly prepared from the following raw materials in parts by weight: 40-80 parts of sulfur, 10-30 parts of coarse aggregate, and 20-50 parts of filler parts, 1-5 parts of sulfur modifier and 1-5 parts of toughening agent; the particle size of coarse aggregate is 20-120 mesh, the particle size of filler is 200-1000 mesh, and both coarse aggregate and filler are carbon sources ; The sulfur modifier is a mixture of dicyclopentadiene and cyclopentadiene, and the content of dicyclopentadiene in the sulfur modifier is not less than 40%; the toughening agent is polysulfide rubber, paraffin, polyvinyl chloride, polyvinyl chloride One or a mixture of two or more of ethylene, naphthalene, and ammonium thiocyanate.

Description

technical field [0001] The invention relates to the technical field of microbial water treatment, in particular to a carbon source-sulfur composite material for autotrophic denitrification and denitrification, a preparation method and an application. Background technique [0002] Microbial wastewater treatment technology is widely used in the field of wastewater treatment due to its technical advantages such as green, high efficiency and low cost. In the denitrification process of biological treatment of nitrate, nitrate has two transformation pathways under the action of microorganisms: the first pathway is assimilation reduction denitrification, in which denitrifying bacteria can assimilate nitrate into ammonium salt for use. Cells synthesize organic nitrogen compounds and become the bacteria itself; the second is dissimilatory reduction denitrification, which refers to the final reduction of nitrate to N 2 . However, since the amount of assimilation and denitrification ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F3/34C02F101/38
CPCC02F3/34C02F3/2806C02F2305/06C02F2101/38Y02W10/10
Inventor 纪群夏冬香
Owner 无锡映川环境技术有限公司
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