Flocculent autotrophic denitrification composite material and preparation method thereof

A technology of autotrophic denitrification and composite materials, which is applied in the field of flocculent autotrophic denitrification composite materials and its preparation, can solve the problems of small specific surface area between sulfur and sewage, affect sewage treatment efficiency, and small sulfur particle size, and achieve reduction The effect of increasing the inert inorganic components of the small sludge, avoiding the loss of sulfur, and reducing the suspended solids in the effluent

Active Publication Date: 2021-07-13
无锡映川环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The invention provides a flocculent autotrophic denitrification composite material and a preparation method thereof, which can solve the technical problems that the existing autotrophic denitrification composite material has a sma

Method used

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  • Flocculent autotrophic denitrification composite material and preparation method thereof
  • Flocculent autotrophic denitrification composite material and preparation method thereof
  • Flocculent autotrophic denitrification composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0075] Take 100.0g of granular sulfur, and melt the granular sulfur into liquid sulfur at a temperature of 150°C-155°C. Weigh 125.0g of heavy calcium carbonate powder (200 mesh), add the calcium carbonate powder into the liquid sulfur, mix thoroughly and evenly. The mixed slurry is naturally cooled in a mold, and then crushed into a 325-mesh powdered sulfur-calcium carbonate integrated compound by a pulverizer.

[0076] Take 200.0 g of sulfur-calcium carbonate integrated composite powder, 1.0 g of sodium dodecylbenzenesulfonate, 0.2 g of organic silicon wetting agent, 8.0 g of sodium bicarbonate, and 5.0 g of ferric chloride. The above powder is completely dispersed in a mixer and mixed evenly to obtain a dry basis of flocculent autotrophic denitrification composite material. Then add the whole weight of the dry base 2 into 2L of tap water, fully mix and dissolve, and stir to obtain the flocculent autotrophic denitrification and denitrification material of this embodiment. A...

Embodiment 2

[0080] Take 200.0g of granular sulfur, and melt the granular sulfur into liquid sulfur at a temperature of 150°C-155°C. Weigh 100.0g of heavy calcium carbonate powder (400 mesh), add the calcium carbonate powder into the liquid sulfur, mix thoroughly and evenly. The mixed slurry is naturally cooled in a mold, and then pulverized into a 200-mesh powdered sulfur-calcium carbonate integrated compound by a pulverizer.

[0081] Take 300.0g of sulfur-calcium carbonate integrated composite powder, 1.5g of sodium dodecylbenzenesulfonate, 0.4g of organic silicon wetting agent, 10.0g of sodium bicarbonate, 10.0g of polyferric sulfate, and put the above powder in the mixer Completely disperse and mix evenly to obtain the dry basis of the flocculent autotrophic denitrification composite material. Then add the whole mass of the dry base 2 into 5L tap water, fully mix and dissolve, and stir to obtain the flocculent autotrophic denitrification and denitrification material of this embodiment...

Embodiment 3

[0086] Take 400.0g of granulated sulfur, and melt the granulated sulfur into liquid sulfur at a temperature of 150°C-155°C. Weigh 25.0g of heavy calcium carbonate powder (800 mesh), add the calcium carbonate powder into the liquid sulfur, mix thoroughly and evenly. The mixed slurry is naturally cooled in a mold and broken into irregular particles of 1-10mm.

[0087] Take 400.0g of sulfur-calcium carbonate integrated particles, 3.2g of sodium dodecylbenzenesulfonate, 0.8g of organic silicon wetting agent, 16.0g of sodium bicarbonate, 15.0g of polyaluminum chloride, and 2L of tap water. Grind and disperse the above-mentioned powder in an experimental colloid mill, and mix evenly to obtain a dry basis of flocculent autotrophic denitrification composite material. Then add all the above weights on a dry basis to 3L of tap water, fully mix and dissolve, and stir to obtain the flocculent autotrophic denitrification and denitrification material of this embodiment. After standing sti...

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Abstract

The invention provides a flocculent autotrophic denitrification composite material and a preparation method thereof, and can solve the technical problems of small sulfur particle size and easy loss of sulfur in an existing autotrophic denitrification composite material, and the technical problems of large sulfur particle size, small specific surface area of sulfur in contact with sewage and influence on sewage treatment efficiency. The flocculent autotrophic denitrification composite material is characterized by comprising the raw materials: sulfur powder, insoluble carbonate powder, a surfactant and a flocculant. According to the composite material disclosed by the invention, on the basis that the surfactant is arranged to carry out hydrophilic modification on the sulfur powder and the insoluble carbonate powder, the flocculant is introduced to flocculate the sulfur powder and the insoluble carbonate powder into an integrated floccule, so that sulfur loss can be effectively avoided, meanwhile, sulfur deposition and compaction are avoided, and the sewage treatment efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an autotrophic denitrification composite material, in particular to a flocculent autotrophic denitrification composite material and a preparation method thereof. Background technique [0002] Biological denitrification is the most economical and effective denitrification method. It mainly uses denitrifying bacteria to remove NO in water under anoxic conditions. 3 - and NO 2 - converted to N 2 , thereby reducing the concentration of nitrate nitrogen in water. At present, the lack of carbon source in sewage is the main factor limiting the efficiency of nitrogen removal. In a large number of municipal and industrial sewage plants, it is usually necessary to supplement a large amount of carbon sources (such as methanol, sodium acetate, glucose, etc.) to achieve the purpose of denitrification and denitrification. Different from traditional biological denitrification, su...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F1/52C02F1/66
CPCC02F3/28C02F1/5236C02F1/66C02F2305/04Y02W10/10
Inventor 纪群夏冬香
Owner 无锡映川环境技术有限公司
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