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Method for preparing porous starch microsphere loaded potassium ferrate sewage treatment complexing agent

A technology of potassium ferrate and porous starch, applied in the field of water treatment, to achieve the effect of improving water treatment effect, no environmental toxicity, and increasing water treatment effect

Inactive Publication Date: 2014-05-21
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome above-mentioned shortcoming of prior art, the object of the present invention is to provide the preparation method of porous starch microsphere loaded potassium ferrate sewage treatment compound agent, potassium ferrate is loaded on porous starch microsphere and can alleviate the release rate of potassium ferrate, Improve its ability to oxidize pollutants, and then obtain better results when the amount of potassium ferrate used is less, and increase the use value of potassium ferrate

Method used

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  • Method for preparing porous starch microsphere loaded potassium ferrate sewage treatment complexing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 3.0g of potassium ferrate and dissolve it in 10mL of KOH aqueous solution with pH=12. After completely dissolving, add 2.0g of porous starch microspheres, stir slowly at room temperature, and an adsorption loading reaction occurs for 24h. After the reaction is completed, filter and filter The cake was dried in a vacuum oven at 50°C for 20 hours, and weighed to obtain 4.8 g of porous starch microsphere-loaded potassium ferrate composite.

[0016] Add 4.0g of porous starch microsphere-loaded potassium ferrate compound, 1.5g of polyferric sulfate, and 0.8g of diatomaceous earth into a drying container, and stir and mix evenly to obtain a porous starch microsphere-loaded potassium ferrate sewage treatment composite agent , sealed and preserved.

Embodiment 2

[0018] Weigh 3.0g of potassium ferrate and dissolve it in 10mL of KOH aqueous solution with pH=12. After the solution is completely dissolved, add 2.0g of porous starch microspheres and stir slowly at room temperature for 24 hours of adsorption and loading reaction. After the reaction, filter, put the filter cake in a vacuum drying oven at 50° C. for 20 hours, and weigh it to obtain 4.8 g of porous starch microsphere-loaded potassium ferrate composite.

[0019] Add 4.0g of porous starch microsphere-loaded potassium ferrate compound, 1.0g of polyferric sulfate, and 0.8g of diatomaceous earth into a drying container, and stir and mix evenly to obtain a porous starch microsphere-loaded potassium ferrate sewage treatment composite agent , sealed and preserved.

Embodiment 3

[0021] Weigh 3.0g of potassium ferrate and dissolve it in 10mL of KOH aqueous solution with pH=12. After completely dissolving, add 1.5g of porous starch microspheres and stir slowly at room temperature, and the adsorption loading reaction occurs for 24h. After the reaction, filter, put the filter cake in a vacuum drying oven at 50° C. for 20 hours, and weigh it to obtain 4.3 g of porous starch microsphere-supported potassium ferrate composite.

[0022] Add 4.0g of porous starch microsphere-loaded potassium ferrate compound, 1.6g of polyferric sulfate, and 0.8g of diatomaceous earth into a drying container, and stir and mix evenly to obtain a porous starch microsphere-loaded potassium ferrate sewage treatment composite agent , sealed and preserved.

[0023] Specific use effect

[0024] Wastewater 1: The comprehensive tannery wastewater used in the experiment comes from a tannery in Haining City, Zhejiang Province. The wastewater has not been treated in any way. Its pH value i...

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Abstract

The invention discloses a method for preparing a porous starch microsphere loaded potassium ferrate sewage treatment complexing agent. The porous starch microsphere loaded potassium ferrate sewage treatment complexing agent comprises the following components in percentage by mass: 50-70 percent of porous starch microsphere loaded potassium ferrate complex, 20-40 percent of polymeric ferric sulfate and 10-20 percent of diatomite, wherein the porous starch microsphere loaded potassium ferrate complex is a complex prepared by dissolving potassium ferrate in an aqueous solution of KOH with the pH of 12, adding porous starch microspheres for complexing and adsorbing. According to the novel water treatment complexing agent, a slow release effect on the oxidizing ability of the potassium ferrate is realized, and the sewage treatment capacity of the potassium ferrate is improved. In addition, due to addition of the polymeric ferric sulfate and diatomite, the complexing and adsorbing capacity of the complexing agent can be further improved, and the sewage treatment effect is improved.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method of a porous starch microsphere loaded potassium ferrate sewage treatment composite agent. Background technique [0002] The global ecological environment is deteriorating day by day, and water resources are becoming increasingly scarce. A large amount of industrial wastewater and domestic sewage must be strictly treated in order to alleviate the shortage of water resources to a certain extent. After years of research, a large number of sewage treatment reagents with excellent performance have emerged. Among them, potassium ferrate has been extensively studied as an ideal water treatment reagent that is safe for humans and organisms and has no secondary pollution to the environment. A large number of studies have proved that: Potassium ferrate can not only remove pollutants and some carcinogenic chemicals in water, but also does not produce any mutage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/28
Inventor 苗宗成张蕾张心李媛媛王志学周亚伟
Owner XIJING UNIV
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