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A kind of synthetic method of polyferric sulfate and polyferric sulfate

A technique of polymerizing ferric sulfate and its synthesis method, which is applied in the fields of ferric sulfate, chemical instruments and methods, flocculation/sedimentation water/sewage treatment, etc., and can solve the problems that the wastewater treatment effect needs to be further improved and the impurity adsorption effect is not good. Improve the ability to remove impurities, improve the effect of water purification, and improve the effect of lipophilicity

Active Publication Date: 2021-09-24
杭州金丰环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although polyferric sulfate has a good flocculation effect, it does not have a good adsorption effect on impurities present in wastewater in the form of non-colloids. The treated wastewater often has a high COD value, and its wastewater treatment effect needs to be further improved.

Method used

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  • A kind of synthetic method of polyferric sulfate and polyferric sulfate
  • A kind of synthetic method of polyferric sulfate and polyferric sulfate
  • A kind of synthetic method of polyferric sulfate and polyferric sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1, a polymeric sulfate, synthesized by steps.

[0048] S1, taking seven hydrated sulfate 55.6 g (0.2 mol), dissolved in 30 ml of water, slowly added 2 ml of mass fraction of 40% sulfuric acid, heated to 50 °, stirred to uniform, to obtain a first mixing solution;

[0049] S2, the first mixed solution continues to 70 ° C, 0.4 g of sodium nitrite is added disposable, and the air is transferred, and the stirring reaction is held for 150 min to obtain a second mixed solution;

[0050] S3, the second mixed solution is cooled to 55 ° C, and the organic skeleton and a co-solvent is added to the second mixed solution, wherein the organic skeleton is a terephthalic acid, an addition amount of 3.32 g (0.02 mol), the co-solvent is ethanol, help The solvent was added 10 mL, and after the organic skeleton and a co-solvent were added, stirring was continued and reacted for 3 h, resulting in a third mixed solution;

[0051] S4, post-treatment of the third mixed solution, specifica...

Embodiment 2～14

[0055] Examples 2 to 14, a polymeric sulfate, distinguishing between Example 1 is that the organic skeleton is replaced with the substance shown in Table 1 at an amount of the same substance.

[0056] At the same time, the comparison is selected as follows.

Embodiment 15～20

[0067] Examples 15 to 20, a polymeric sulfate, the difference from Example 1 is that the organic skeleton is replaced with the same substance to be as shown in Table 3.

[0068] Table 3, the structure of the organic skeleton in Examples 15 to 20

[0069]

[0070]

[0071] The polymerized sulfate prepared in the above embodiment was prepared, and the sewage treatment experiment was carried out, and the results were shown in Table 4.

[0072] Table 4, the sewage treatment results of Examples 15 to 20

[0073] serial number COD value (Mg / ml) after processing SS value (mg / ml) after treatment Example 15 29.6 7.5 Example 16 29.2 7.4 Example 17 27.7 6.9 Example 18 27.1 7.0 Example 19 34.0 8.1 Example 20 27.2 7.0

[0074] In Examples 15 to 20, the alkoxy group or alkyl group is connected to the benzene ring chain can be carried out by a Fouroyylation reaction, a Four alkylation reaction, a halogenated suzuki reaction, and the like...

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Abstract

The application relates to the field of flocculant preparation, more specifically, it relates to a synthetic method of polyferric sulfate and polyferric sulfate. Among them, the synthesis method of polymerized ferric sulfate includes four steps of acidifying ferrous sulfate aqueous solution, oxidizing with sodium nitrite and air, adding organic skeleton and co-solvent for further reaction, and post-processing to obtain polymerized ferric sulfate. The polymeric ferric sulfate prepared by the above technical scheme is helpful to greatly improve the water purification ability of the polymeric ferric sulfate, and has a good application prospect.

Description

Technical field [0001] The present application relates to the field of flocculant preparation, and more particularly, it relates to a synthetic method of polymer iron sulfate and iron sulfate. Background technique [0002] Polymeric sulfate is a commonly used flocculant, typically by oxidizing a divalent iron ion to a trivalent iron. The polymer sulfate has a good flocculation effect, and the flocculation principle is still in discussion. The mainstream mechanism is DLVO theory, that is, through the addition of flocculant, it is conducive to shortening the distance between the particles in the water body, so that the intensity can be Van Dehua The attraction potential is mainly, reducing the electrostatic exclusion potential energy between the medium distance, thereby causing agglomeration of particles in the system to achieve flocculation purposes. [0003] Although the polymerization sulfate has a better flocculation effect, its impurities in the non-neocketing form is not good...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/14C02F1/52
CPCC01G49/14C02F1/5245
Inventor 周益钧曹玉富於东军杨建新
Owner 杭州金丰环保科技有限公司
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