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Dust suppressant and preparing method and using method thereof

A technology of dust suppressant and bacterial solution, which is applied in the field of environmental pollution control, can solve the problems of severe comprehensive control of fly ash dust, difficulty in continuously meeting environmental protection requirements, human body and biological hazards, etc., achieve good dust suppression effect, low cost, The effect of reducing water consumption

Inactive Publication Date: 2019-05-03
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fly ash discharged from coal-fired power plants has been piled up in large quantities for a long time, occupying land, polluting the atmosphere and water systems, and even causing harm to human beings and organisms
Fly ash discharge has become the largest single pollution source of industrial solid waste in China; in 2009, China's fly ash output reached 3.75×10 8 t, the volume reaches 4.24×10 8 m 3 However, the comprehensive management of fly ash dust, which is extremely harmful to the environment, is very serious
[0003] At present, water sprinkling is a main method for thermal power plants to prevent and control fly ash dust pollution. Usually, in natural environments, evaporation and infiltration are rapid, requiring frequent and large amounts of watering, which is time-consuming, labor-intensive, and costly. Environmental protection is increasingly It is difficult to continuously meet environmental protection requirements under strict conditions

Method used

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  • Dust suppressant and preparing method and using method thereof
  • Dust suppressant and preparing method and using method thereof
  • Dust suppressant and preparing method and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This example provides a dust suppressant, which is prepared from the liquid of Bacillus sarcina pasteuri and nutrient salts, the nutrient salts being CaCl at an equimolar concentration 2 ·H 2 O and urea.

[0038] The preparation method comprises the following steps:

[0039] (1) Preparation of medium: add 20.0g of yeast powder, 10.0g of ammonium sulfate and 1.0mL of nickel chloride per 1.0L of water, mix well, adjust the pH of the medium to 8.0, and form the medium to be fermented after sterilization;

[0040] (2) Bacterial strain cultivation: insert 1%-5% Bacillus sarcina seed fermentation liquid into the described medium to be fermented that obtains in step (1), after inoculation is completed, temperature control 30 ℃, cultivate 24h, Formation of Bacillus sarcina pasteurianus liquid;

[0041] (3) Preparation of nutrient solution: after mixing the calcium source and urea, add water and mix evenly to form the nutrient solution, the concentration of which is 0.9mol / L;...

Embodiment 2

[0044] This embodiment provides a dust suppressant, which is prepared from Bacillus sarcina bacteria liquid and nutrient solution.

[0045] The preparation method comprises the following steps:

[0046] (1) Preparation of medium: Add 20.0g yeast powder, 10.0g ammonium sulfate and 1.0mL nickel chloride to every 1.0L of water, mix well and adjust the pH of the medium to 9.0, and use a high-pressure steam sterilizer at 120°C After 20 minutes of sterilization, the medium to be fermented is formed;

[0047](2) Bacterial strain cultivation: insert 1%-5% Bacillus sarcina seed fermentation liquid in the described culture medium to be fermented that step (1) obtains, after inoculation is finished, temperature control 30 ℃, at 170r / / Cultivate 24h in the shaking incubator of min, form Bacillus sarcina bacterium liquid, the enzyme activity of described Bacillus sarcinina bacterium liquid is 1.2, and OD600 is 3.14;

[0048] (3) Preparation of nutrient solution: 110.26g of CaCl 2 ·H 2 ...

Embodiment 3

[0052] This example provides a dust suppressant. The difference between this example and Example 2 is that in the preparation method, after the inoculation is completed, shake culture for 36 hours to form a sarcina pasteurian bacteria liquid.

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Abstract

The invention relates to a dust suppressant, and a preparing method and a using method thereof. The dust suppressant is prepared from a Sporosarcina pasteurii solution and nutritive salt. The nutritive salt includes a calcium source and urea. The dust suppressant is prepared by mixing a Sporosarcina pasteurii culture product with a nutrition solution prepared from the nutritive salt. Beneficial effects of the dust suppressant are that the dust suppressant can effectively reduce water used for conventional water spraying to suppress dust, and can obviously reduce raised dust pollution in an ashstorage yard; the dust suppressant is safe to use and green and provides an environmentally friendly treatment method.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and in particular relates to a dust suppressant, a preparation method and a use method thereof. Background technique [0002] Fly ash discharged from coal-fired power plants has been piled up in large quantities for a long time, occupying land, polluting the atmosphere and water systems, and even causing harm to human beings and organisms. Fly ash discharge has become the largest single pollution source of industrial solid waste in China; in 2009, China's fly ash output reached 3.75×10 8 t, the volume reaches 4.24×10 8 m 3 However, the comprehensive control of fly ash dust, which is extremely harmful to the environment, is very serious. [0003] At present, water sprinkling is a main method for thermal power plants to prevent and control fly ash dust pollution. Usually, in natural environments, evaporation and infiltration are rapid, and frequent large-scale watering is...

Claims

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Application Information

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IPC IPC(8): C12N1/20C09K3/22C12R1/01
Inventor 蔡红魏迎奇肖建章王子文严俊宋建正孙黎明吴帅峰谢定松
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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