Solid polyferric sulfate flocculant and preparation method thereof

A technology of solid polymerization and ferric sulfate, which is applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of poor hydrophobic performance, limited adsorption performance and volume of polymerized iron salts. and low density to achieve the effect of increasing light stability, enhancing hydrophobic effect, and preventing flocculation failure

Active Publication Date: 2021-06-01
HENGYANG JIANHENG IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: commonly used polyferric salts have poor hydrophobic performance, and the small volume and density result in limited adsorption performance. It is necessary to develop a flocculation agent with less dosage, high processing efficiency, stable flocculation, and not easy to deteriorate under light. agent

Method used

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  • Solid polyferric sulfate flocculant and preparation method thereof
  • Solid polyferric sulfate flocculant and preparation method thereof
  • Solid polyferric sulfate flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]The modified monomer is made by the following steps:

[0048]Step S1, add 4 g of anhydrous aluminum chloride, 25 ml of amphiphenylphenol, add 7 ml of benzoyl chloride, temperature rise to 100 ° C, after cooling to room temperature, after cooling to room temperature, incubation to room temperature, incubation to room temperature, after cooling to room temperature, incubation to 100 ° C, after cooling to room temperature After the precipitate is dissolved, the organic layer is separated, and the natural layer is washed with a mass fraction of 5% NaOH solution and deionized water, collect the organic layer, the crude product, and the crude product is evaporated under reduced pressure. Phenol and deionized water. After cooling, the solid, filtrate, water washing, ethanol recrystallization, dry, and the intermediate 1;

[0049]Step S2, 0.1 mol of triethylamine, 40 ml of tetrahydrofuran, stirred and dissolved to a mixed solution mixed under an ice bath, and a mixed solution mixed with mas...

Embodiment 2

[0055]The modified monomer is made by the following steps:

[0056]Step S1, 5 g of an aluminum chloride, 30 ml of amphiphenylphenol is added to the three flask, and 10 ml of benzoyl chloride is added dropwise to 100 ° C, and the reaction is 8 h, after cooling to room temperature, add 15 ml of deionized water to stir After the precipitate is dissolved, the organic layer is separated, and the natural layer is washed with a mass fraction of 5% NaOH solution and deionized water, collect the organic layer, the crude product, and the crude product is evaporated under reduced pressure. Phenol and deionized water. After cooling, the solid, filtrate, water washing, ethanol recrystallization, dry, and the intermediate 1;

[0057]Step S2, 0.15 mol of triethylamine, 50 ml of tetrahydrofuran, stirred and dissolved, and tetrahydrofuran is added dropwise under an ice bath, and the mixed solution mixed with mass ratio 1: 2 after stirring. The mixture was stirred, and the bath was added dropwise under the...

Embodiment 3

[0063]Solid polymeric sulfate flt coagulant, including materials such as weight:

[0064]FE2(SO4)3XH2O 20 parts, 8 parts of water glass, 10 parts of KH-5602, acrylamide, 8 modified monomers, 1 chain chain agent DA1, 0.5 parts of formaldehyde, sodium hydrogen sulfate, SPAN-201, ammonium sulfate 3 copies;

[0065]The solid polymeric sulfate flocculant is made of steps:

[0066]Step A1, will Fe2(SO4)3XH2O Among deionized water, heating is heated at 65 ° C to dissolve, sodium hydroxide, 30 minutes of 30 min, resulting in mixed liquid A, where deionized water is used in Fe2(SO4)3XH2O 3 times the mass of O, the amount of sodium hydroxide is Fe2(SO4)3XH2O 0.5 times the quality;

[0067]Step A2, the water glass was added to deionized water, pH to 6 with 0.1 g / ml of hydrochloride, stirred for 2 h, and stirred for 30 min, mixed with mixed liquid a stirred for 2 h, add acrylamide, Example 1 After the modified monomer, the mixture is stirred, the pH is adjusted with a mass fraction of 30% ammonia water, ...

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Abstract

The invention discloses a solid polyferric sulfate flocculant, which is prepared from the following raw materials in parts by weight: 20 to 30 parts of Fe2 (SO4) 3 * xH2O, 8 to 10 parts of water glass, 2 to 4 parts of KH-560, 10 to 15 parts of acrylamide, 8 to 10 parts of modified monomers, 1 to 3 parts of chain extender DA, 0.5 to 1 part of sodium formaldehyde sulfoxylate, 1 to 2 parts of Span-20 and 3 to 5 parts of ammonium persulfate. The invention also discloses a preparation method of the flocculant. Polyferric silicate sulfate is modified by using an organic polymeric flocculant acrylamide through an aqueous solution polymerization process to prepare a composite flocculant, the molecular chain of the flocculant is increased, and adding of a small amount of functional modified monomers can enhance the hydrophobic interaction between polymer molecular chains to stabilize the performance so as to improve the application efficiency of water treatment, and the light stability can be improved to prevent flocculation failure caused by the fact that the light degradation rate is accelerated by ultraviolet irradiation.

Description

Technical field[0001]The present invention belongs to the field of flocculant techniques, and it is directed to a solid polymerized sulfate flocculant and a preparation method thereof.Background technique[0002]In various types of contained water treatment methods, the flocculation precipitation method is the most commonly used secondary treatment method. When the flocculant is added to the water to be treated, the finally produced polymer is generated by a series of precipitation, hydrolysis, and polymerization. Further chemical effects of impurity particles produce large flocculation precipitation.[0003]According to the chemical composition of the flocculant, it can be divided into four categories: organic, inorganic, composite and biological flocculant, each has advantageous disadvantages, the composition of the inorganic small molecular flocculant is mainly inorganic, commonly used, aluminum sulfate, iron sulfate, chlorine Aluminum, etc., exhibits strong adsorption performance, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/60C02F1/52C02F1/54C02F1/56
CPCC08F220/56C02F1/52C02F1/56C02F1/54C02F1/5236C08F220/603
Inventor 黄河
Owner HENGYANG JIANHENG IND DEV
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