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A kind of polyaluminum zinc silicate flocculant and its preparation method and application

A technology of polymerizing aluminum zinc silicate and polymerizing silicic acid, applied in aluminum silicate, silicate, flocculation/sedimentation water/sewage treatment, etc. Achieve the effect of low production cost and environmental protection in the preparation process

Active Publication Date: 2016-08-17
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purposes of the present invention is to provide a polymeric zinc silicate flocculant in order to solve technical problems such as the unsatisfactory flocculation effect of the above-mentioned polysilicon-iron-zinc coagulant

Method used

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  • A kind of polyaluminum zinc silicate flocculant and its preparation method and application
  • A kind of polyaluminum zinc silicate flocculant and its preparation method and application
  • A kind of polyaluminum zinc silicate flocculant and its preparation method and application

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Embodiment 1

[0025] A kind of polyaluminum zinc silicate flocculant, it is prepared by the method comprising the following steps:

[0026] (1) Add 2.84 grams of silicate into 200ml of distilled water, stir rapidly at room temperature for 20 minutes to dissolve, and obtain a silicate aqueous solution with a mass percentage concentration of 1.42%, then add 0.47g of a cross-linking agent, and after stirring evenly, the obtained The pH of the mixed liquid was adjusted to 2.5 with sulfuric acid, and then the stirring speed was controlled to be 100r / min to carry out the polymerization reaction for 1 h, and the obtained reaction liquid was statically matured for 4 h to obtain a colorless and transparent polymerized silicic acid aqueous solution;

[0027] The silicate solution is Na 2 Si0 3 9H 2 0;

[0028] The cross-linking agent is borax, and its consumption is calculated by mass ratio, that is, silicate: cross-linking agent is 6:1;

[0029] (2) Under the condition of constant stirring at ro...

Embodiment 2

[0054] A kind of polyaluminum zinc silicate flocculant, it is prepared by the method comprising the following steps:

[0055] (1) Add 4.5 grams of silicate into 200ml of distilled water, stir rapidly at 30°C for 20 minutes to dissolve, and obtain an aqueous solution of silicate with a mass percentage concentration of 2.25%, then add 0.75g of cross-linking agent, and stir evenly to obtain The pH of the mixed material liquid was adjusted to 4 with hydrochloric acid, and then the stirring speed was controlled to be 100r / min to carry out the polymerization reaction for 3 hours, and the obtained reaction solution was statically matured for 3 hours to obtain a colorless and transparent polymerized silicic acid aqueous solution;

[0056] The silicate is K 2 Si0 3 ;

[0057] The cross-linking agent is borax, and its consumption is calculated by mass ratio, that is, silicate: cross-linking agent is 6:1;

[0058] (2) Under the condition of constant stirring at room temperature, add 2...

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Abstract

The invention discloses a polymeric aluminum zinc silicate flocculating agent as well as a preparation method thereof. The preparation method comprises the following steps: adding silicate into distilled water at first, stirring quickly for 30 minutes at 30 DEG C for dissolving so as to obtain a silicate aqueous solution, then adding a crosslinking agent, stirring uniformly to obtain a mixed solution, adjusting the pH value to 2-5 by using acid, then controlling the stirring speed to be 100r / min to perform polymerization for 1-3 hours, and standing and aging an obtained reaction solution for 3-4 hours to obtain a polymeric silicic acid aqueous solution; then under the condition of continuously stirring at normal temperature, sequentially adding an aluminum salt and a zinc salt into the aqueous solution, then controlling the stirring speed to be 100r / min, stirring for 3-6 hours, and then aging in a dark place for 6-8 hours to obtain the polymeric aluminum zinc silicate flocculating agent. The polymeric aluminum zinc silicate flocculating agent is good in effect, is suitable for water treatment and is also suitable for treating rolling waste oil. Moreover, the polymeric aluminum zinc silicate flocculating agent disclosed by the invention is simple to prepare and convenient to operate, has low requirements for reaction equipment and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a polyaluminum zinc silicate flocculant and its preparation method and application. Background technique [0002] With the advancement of science and technology and the continuous improvement of people's living standards, people's awareness of environmental protection is gradually increasing, and the requirements for the treatment of waste water and waste oil are getting higher and higher. Flocculation is not only a common method for wastewater treatment, but also a common method for treating waste oil containing a large amount of solid particles, so flocculants have always been in a relatively important position. As the second-generation flocculant, inorganic polymer flocculant has always occupied a large share in the flocculant field because of its good flocculation effect and low price. [0003] Activated silicic acid was used as a coagulant aid in water treatment in the middle and late 1930s, but due to its strong self-agg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/26C02F1/52C10M175/00
Inventor 韩生荣绍丰刘程陈永悦石磊朱建英马鹏刘亚锋
Owner SHANGHAI INST OF TECH
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