Preparation method and application of self-activating persulfate oxidizing agent

A technology of persulfate oxidation and persulfate, which is applied in the direction of oxidized water/sewage treatment, restoration of contaminated soil, etc., can solve problems such as uneven mixing, poor dispersion, and difficult molding, and achieve safe operation management and removal effect Good, simple process effect

Active Publication Date: 2016-01-20
中节能大地环境修复有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If calcium peroxide and persulfate solid medicine are simply mixed, there will be disadvantages such as uneven mixing, difficult molding and poor dispersibility

Method used

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  • Preparation method and application of self-activating persulfate oxidizing agent
  • Preparation method and application of self-activating persulfate oxidizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 595g of sodium persulfate and 180g of calcium peroxide evenly, add 24g of sodium cetylsulfonate as a dispersant, and 80g of hydroxypropyl methylcellulose as a binder. After the mixed medicinal powder was stirred evenly, 77.5g of deionized water was added and mixed evenly to make granules with a diameter of 3mm, and dried for 12 hours at a temperature of 30°C and a vacuum of 0.1kPa.

Embodiment 2

[0026] Mix 595g of sodium persulfate and 180g of calcium peroxide evenly, add 24g of sodium cetylsulfonate as a dispersant, and 100g of pregelatinized starch as a binder. After the mixed medicinal powder was stirred evenly, 77.5g of deionized water was added and mixed evenly to make granules with a diameter of 30mm, and dried at 20°C and a vacuum of 0.1kPa for 12 hours.

Embodiment 3

[0028] Mix 135g of potassium persulfate and 72g of calcium peroxide uniformly, add 2.07g of sodium dodecylbenzenesulfonate as a dispersant, and 31g of methylcellulose as a binder. After the mixed medicinal powder was stirred evenly, 10.35g of water was added and mixed evenly to make granules with a diameter of 20mm, and dried at 0°C and a vacuum of 0.1kPa for 12 hours.

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Abstract

The invention discloses a preparation method and application of a self-activating persulfate oxidizing agent. The self-activating persulfate oxidizing agent is composed of persulfate, an activator, a binder, and a dispersant. The persulfuric acid The molar ratio of the salt to the activator is 0.5:1 to 5:1, based on the mass of the mixture of the persulfate and the activator, the addition of the binder is 10% to 15% of the basis, and the dispersed The amount of additive added is 1%~5% of the benchmark. The present invention mixes persulfate and calcium peroxide according to a certain ratio, granules and shapes them, and then applies them to polluted water bodies and polluted sites for restoration, so as to achieve the self-activation of the medicament without adding an additional activator, thereby overcoming the problem of uneven mixing of the medicaments. problems, which greatly simplifies the construction operation and improves the processing efficiency.

Description

technical field [0001] The invention relates to the field of oxidizing agents for the restoration of polluted water bodies and polluted sites, in particular to a preparation method and application of a self-activating persulfate oxidizing agent. Background technique [0002] According to the statistics of the Industry Yearbook, the number of industrial decommissioning sites in my country's urban areas has increased rapidly from 6,611 in 2006 to 22,488 in 2008, and is still increasing in recent years. The acceleration of urbanization has promoted the transformation of the original land function, and a large amount of industrial land has been converted into residential or commercial land. However, the environmental problems existing in the polluted sites left by these industrial enterprises have become obstacles to land redevelopment. Among them, chlorinated hydrocarbons, benzene and benzene homologues (BTEX), polycyclic aromatic hydrocarbons (PAHs), petroleum hydrocarbons (TP...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08C02F1/72
Inventor 胡清张鹤清林斯杰唐一
Owner 中节能大地环境修复有限公司
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