Preparation method of PSAF (polysilicate aluminum ferric) flocculant

A technology of polymerized ferric aluminum silicate and flocculant, which is applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sewage treatment, etc. It can solve the impact of polymerized ferric aluminum silicate flocculant and affect the flocculation effect, etc. problems, to achieve the effect of wide application range, good flocculation effect and low cost

Active Publication Date: 2016-04-13
KUNMING YUEGAO IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the currently prepared polyaluminum iron silicate flocculant can take advantage of some advantages of polyaluminum iron silicate, it still uses silicate as raw material, and the obtained polyaluminum iron silicate flocculant is greatly affected by pH, thus affecting Flocculation effect

Method used

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  • Preparation method of PSAF (polysilicate aluminum ferric) flocculant

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] The preparation steps of polyaluminum iron silicate flocculant are as follows:

[0020] (1) Distilled water is heated to boiling, and the rotating speed is 300r / min and slowly drips the trimethylsiloxysilicate solution that mass concentration is 35%, and the rate of control drop rate is 1m1 / min, distilled water: trimethylsilane The volume ratio of the oxysilicate solution is 16:1. After the dropwise addition, continue to control the same rotation speed and stir for 30 minutes, add nano-silica, adjust the pH to 9 with a sodium hydroxide aqueous solution with a mass concentration of 8%, and heat and keep it warm. 3h, obtain silicic acid sol;

[0021] (2) Dividing the prepared silicic acid sol into three parts of silicic acid sol with a volume ratio of 3:2:1, followed by the first part of silicic acid sol, the second part of silicic acid sol and the third part of silicic acid sol, for subsequent use;

[0022] (3) In the first silicic acid sol, control the rotating speed t...

Embodiment 2

[0028] The preparation steps of polyaluminum iron silicate flocculant are as follows:

[0029] (1) The distilled water is heated to boiling, and the mass concentration is 40% trimethylsiloxysilicate solution slowly dripped under the speed of 400r / min, and the control rate of addition is 1.5m1 / min, distilled water: trimethyl The volume ratio of the siloxysilicate solution is 20:1. After the dropwise addition, continue to control the same rotation speed and stir for 40 minutes, add nano silicon dioxide, adjust the pH to 10 with a 10% sodium hydroxide aqueous solution, and heat Insulated for 4 hours to obtain silicic acid sol;

[0030] (2) Dividing the prepared silicic acid sol into three parts of silicic acid sol with a volume ratio of 3:2:1, followed by the first part of silicic acid sol, the second part of silicic acid sol and the third part of silicic acid sol, for subsequent use;

[0031] (3) In the first silicic acid sol, control the rotating speed to 300r / min, microwave h...

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Abstract

The invention discloses a preparation method of a PSAF (polysilicate aluminum ferric) flocculant. Distilled water is heated to boil, a trimethylsiloxysilicate solution is added slowly and dropwise, full stirring is performed after addition, nano-silica is added, the pH is adjusted with a sodium hydroxide aqueous solution, and silica sol is obtained after heating and heat preservation; the silica sol is divided into three parts, aluminum salt is added to the first part of silica sol, stirring is performed until transparent sol is formed, and heat preservation is performed; iron salt is added to the second part of silica sol, stirring is performed until transparent reddish-brown sol is formed, and heat preservation is performed; the transparent sol is added to the transparent reddish-brown sol slowly and dropwise, heat preservation is performed after full stirring, the third part of silica sol is added, heat preservation is performed after full stirring, condensation and drying are performed, and the PSAF flocculant is obtained. Trimethylsiloxysilicate and silicon dioxide are adopted as raw materials, the raw materials are easy to obtain and low in cost, and the finally obtained PSAF flocculant is slightly affected by the pH, has a better flocculation effect and is low in cost and wider in application range.

Description

technical field [0001] The invention relates to the technical field of flocculant preparation, in particular to a preparation method of polymerized aluminum iron silicate flocculant. Background technique [0002] Polymerized aluminum iron silicate is a new type of water-soluble polymer electrolyte. It is mainly used to purify drinking water, and can also be used for special water quality treatment of water supply, removal of picks, removal of fluorine, removal of radioactive pollution, removal of slick oil, etc. In addition, it is widely used in industrial wastewater treatment, such as printing and dyeing wastewater, in foundry, papermaking, medicine, leather, etc. It has an immediate effect on the treatment of sewage in the field of sewage treatment, and is currently a very popular sewage treatment agent. [0003] At present, the most commonly used method for synthesizing polyaluminum iron silicate is to use silicate solution as raw material, activate it to generate silic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
CPCC02F1/5245
Inventor 胡永红
Owner KUNMING YUEGAO IND & TRADE CO LTD
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