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Preparation method and application of self-activated persulfate oxidized medicament

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

Active Publication Date: 2014-10-01
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-activated persulfate oxidized medicament
  • Preparation method and application of self-activated persulfate oxidized medicament

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

Embodiment 2

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

Embodiment 3

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

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Abstract

The invention discloses a preparation method and application of a self-activated persulfate oxidized medicament. The self-activated persulfate oxidized medicament is prepared from persulfate, an activator, an adhesive and a dispersant, wherein the molar ratio of persulfate and the activator is (0.5:1)-(5:1), and based on the weight of a mixture of persulfate and the activator, the addition of the adhesive is 10-15% and the addition of the dispersant is 1-5%. Persulfate and calcium peroxide mixed in a certain proportion and prilled and moulded are applied to repairing polluted water and sites, so that the medicament is self-activated without additionally adding the activator, thereby overcoming the problem that the medicament is non-uniform to mix, extremely simplifying the construction operation and improving the treatment 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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IPC IPC(8): C02F1/72B09C1/08A62D3/38
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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