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High-effective composite flocculant for treating low-turbidity water and preparation method of high-effective composite flocculant

A composite flocculant and low turbidity technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of harsh reaction conditions, complicated preparation process, and prone to gelation, etc., and achieve stable and easy-to-control reaction conditions, Good response and good stability

Active Publication Date: 2012-06-20
江门市志升环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many impurities in the product, the composition and concentration are not easy to control, there are many factors affecting the effect of the polymerization reaction, and the product stability time is short
[0008] CN1042340A discloses that sodium aluminate, sodium silicate and aluminum sulfate are used as main raw materials to prepare polybasic silicon aluminum sulfate. During the preparation process, the raw material quality is strictly controlled, and the product has less impurities, but the preparation process is complicated, the reaction conditions are harsh, and the reaction process is controlled. Improper prone to gel

Method used

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  • High-effective composite flocculant for treating low-turbidity water and preparation method of high-effective composite flocculant
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Effect test

Embodiment 1

[0029] A high-efficiency composite flocculant for treating low-turbidity water, its raw materials contain the following components by weight: 6.8 parts of sodium aluminate, 6.5 parts of water glass solution, 69.5 parts of aluminum sulfate solution, 17.2 parts of water, and its preparation method Include the following steps:

[0030] 1) Preparation of sodium aluminate stable solution: Dissolve 36.4g of sodium aluminate and 0.44g of sodium tartrate in 91g of water, heat to boil, cool to room temperature when the mixed solution becomes clear, and obtain sodium aluminate stable solution A;

[0031] 2) Preparation of activated silicic acid with a low degree of polymerization: take 34.5g of water glass solution, adjust the pH to 1 with a mixture of oxalic acid and ammonium sulfate with a molar ratio of 1:2, and let it stand to obtain a transparent solution with a slight blue fluorescence B;

[0032] 3) Polymerization reaction: at room temperature, add solution B to 370g of aluminum...

Embodiment 2

[0034] A high-efficiency composite flocculant for treating low-turbidity water, its raw materials contain the following components by weight: 8.4 parts of sodium aluminate, 6.8 parts of water glass solution, 63.6 parts of aluminum sulfate solution, 21.2 parts of water, and its preparation method Include the following steps:

[0035] 1) Preparation of sodium aluminate stable solution: Dissolve 42.5g of sodium aluminate and 0.59g of sodium gluconate in 106g of water, heat to boil, cool to room temperature when the mixed solution becomes clear, and obtain sodium aluminate stable solution A;

[0036] 2) Preparation of activated silicic acid with a low degree of polymerization: Take 34.5g of water glass solution, adjust the pH to 2 with a mixture of citric acid and ammonium sulfate with a molar ratio of 1:1, and let it stand still to obtain a slightly blue fluorescent transparent Solution B;

[0037] 3) Polymerization reaction: at room temperature, add solution B to 321g of alumin...

Embodiment 3

[0039] A high-efficiency composite flocculant for treating low-turbidity water, its raw materials contain the following components by weight: 8.6 parts of sodium aluminate, 5.1 parts of water glass solution, 64 parts of aluminum sulfate solution, 22.3 parts of water, and its preparation method Include the following steps:

[0040] 1) Preparation of sodium aluminate stable solution: Dissolve 42.7g of sodium aluminate and 1.45g of potassium tartrate in 110g of water, heat to boil, cool to room temperature when the mixed solution becomes clear, and obtain sodium aluminate stable solution A;

[0041] 2) Preparation of activated silicic acid with a low degree of polymerization: take 25.5g of water glass solution, adjust the pH to 1.5 with a mixture of oxalic acid, acetic acid and ammonium sulfate with a molar ratio of 1:1:5, and let it stand still to obtain a slightly blue color Fluorescent transparent solution B;

[0042] 3) Polymerization reaction: at room temperature, add solut...

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Abstract

The invention discloses a high-effective composite flocculant for treating low-turbidity water and a preparation method of the high-effective composite flocculant. The raw materials of the high-effective composite flocculant comprise sodium aluminate, a sodium silicate solution, an aluminum sulfate solution and the like. The preparation method comprises three steps including preparation of a stable sodium aluminate solution, preparation of a polysilicate solution with a low polymerization degree and a polymeric reaction. According to the preparation method disclosed by the invention, when silicic acid is activated, due to the combination of weak acid with strong acid ammonium salt, the polymerization speed of self polymerization of the silictic acid is effectively controlled and stable polysilicate with the low polymerization degree is prepared; and in the subsequent polymeric reaction, the bonding of aluminum with silicon is facilitated, the effective smooth operation of the polymeric reaction is ensured and the obtained inorganic polymer composite flocculant is favorable in stability and low in consumption; and flocculating constituent particles are quick in settling and favorable in reaction effect.

Description

technical field [0001] The invention relates to the preparation of an inorganic composite flocculant, in particular to a high-efficiency composite flocculant for treating low turbidity water and a preparation method thereof. Background technique [0002] Today, when the problem of "water quality-based water shortage" is becoming more and more serious and the contradiction between supply and demand of water resources is increasing, reprocessing low-turbidity water and rationally using it as recycled water resources has become a solution to the contradiction between supply and demand of water resources and alleviate the crisis of water resources. a way of. [0003] Flocculation and sedimentation is one of the technical methods often used in water treatment at present, and it is also a water treatment method with relatively mature technology and relatively stable treatment effect so far. The core part of this technology is the flocculant, whose performance is directly related ...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 董永星张立武谭铭卓蒋志飞
Owner 江门市志升环保科技有限公司
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