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Medicament for in-situ remediation of black and odorous water bottom sediment, and preparation method and application thereof

A black and odorous water body, in-situ repair technology, applied in the field of environmental restoration, can solve problems affecting the living environment of the crowd, and achieve the effect of preventing hydrogen sulfide

Inactive Publication Date: 2019-11-26
北京伦至环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Black and odorous water not only affects the living environment of people near the river, but also causes human health problems

Method used

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  • Medicament for in-situ remediation of black and odorous water bottom sediment, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 3% of the total mass of water and 10% of the total mass of copper sulfate are mixed to obtain a copper sulfate solution, and the copper sulfate solution is poured into a beaker containing 23% of the total mass of zero-valent iron, and stirred evenly to prepare Obtain mixed solution A; then account for 15% of the total mass of starch, add 5% of the total mass of water and mix evenly, and then pour the mixture of starch and water into a container containing 27% of the total mass of calcium peroxide In the beaker, stir to make mixed solution B, finally, mixed solution A and mixed solution B are mixed together, simultaneously, add water glass solution (water content is 2% of total mass, and water glass content is 10% of total mass %) and NaY molecular sieves that account for 5% of the total mass, and then continuously stirred and granulated by a granulator to obtain the medicament with a particle size of about 150 microns.

[0021] According to 3% of the mass of the bottom ...

Embodiment 2

[0023] 3% of the total mass of water and 7% of the total mass of copper sulfate were mixed to obtain a copper sulfate solution, and the copper sulfate solution was poured into a beaker containing 20% ​​of the total mass of zero-valent iron, and stirred evenly to prepare Obtain mixed solution A; Then, add 5% water and mix uniformly to 15% cellulose, then pour the mixture of cellulose and water into a 30% cellulose container In the beaker of calcium oxide, stir and make mixed solution B, at last, mixed solution A and mixed solution B are mixed together, simultaneously, add water glass solution (water content is 5% of total mass, water glass content is total mass 10%) and NaY molecular sieves accounting for 5% of the total mass, then continuously stirred and granulated by a granulator to obtain the medicament with a particle size of about 170 microns.

[0024] According to 3% of the mass of the bottom mud in the water body, the agent is added, and after 24 hours of reaction, the ...

Embodiment 3

[0026] 2% of the total mass of water and 5% of the total mass of copper sulfate are mixed to obtain a copper sulfate solution, and the copper sulfate solution is poured into a beaker containing 35% of the total mass of zero-valent iron, and stirred evenly to prepare Obtain mixed solution A; Accounting for 19% of the total mass of glucose then adding 5% of the total mass of water to obtain a glucose solution, and then pouring the glucose solution into a beaker containing 25% of the total mass of potassium peroxide In, stir to make mixed solution B, finally, mixed solution A and mixed solution B are mixed together, simultaneously, add water glass solution (water content is 3% of total mass, and water glass content is 10% of total mass) and NaY molecular sieves accounting for 5% of the total mass, and then continuously stirred and granulated by a granulator to obtain the medicament with a particle size of about 150 microns.

[0027] Add the medicament according to 0.5% of the bot...

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Abstract

The invention relates to a medicament for in-situ remediation of black and odorous water bottom mud medicament, and a preparation method and an application thereof. The medicament mainly comprises 20-35 wt% of zero-valent iron, 5-10 wt% of a copper salt, 10 wt% of water glass, 25-40 wt% of a peroxide, 10-15 wt% of saccharides, 5 wt% of a NaY molecular sieve and 10-15 wt% of water. The invention also provides a preparation method of the black and odorous water bottom sediment remediation agent. The preparation method comprises the following steps: dissolving the copper salt in a small amount ofwater, and pouring the obtained solution into a beaker filled with the zero-valent iron to obtain a mixed solution A; then adding a small amount of water into the saccharides, and pouring the obtained solution into a beaker filled with the peroxide to prepare a mixed solution B; mixing the mixed solution A with the mixed solution B, adding a water glass solution and the NaY molecular sieve, and performing continuous stirring; and finally, granulating the obtained mixture through a granulator to obtain the medicament. The medicament has the advantages of simple preparation process, good remediation effect, overcoming of the generation of black and odorous gases such as hydrogen sulfide, and good application prospect.

Description

technical field [0001] The invention relates to the technical field of environmental restoration, in particular to an agent for in-situ restoration of black and odorous water bottom sludge, its preparation method and application. Background technique [0002] With the rapid development of industry and agriculture, more and more production and domestic wastewater are excessively discharged into rivers, resulting in the increase of nutrients and pollutants in the river water, which deteriorates the water quality and produces black and odorous water. Black and odorous water not only affects the living environment of people near the river, but also causes human health problems. Therefore, the treatment of black and odorous water bodies is a hot spot in water environment restoration. [0003] The current black and odorous water body restoration technology mainly includes external source prevention and control technology and internal source treatment technology. With the develop...

Claims

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Application Information

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IPC IPC(8): C02F11/02C02F101/10C02F101/16
CPCC02F11/02C02F2101/105C02F2101/101C02F2101/16
Inventor 罗章向猛李耀辉杜鹏尹交英
Owner 北京伦至环境科技有限公司
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