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Macromolecular composite flocculant and preparation method and application thereof

A composite flocculant and polymer technology, which is applied in the field of water treatment, can solve problems such as difficulty in meeting national drinking water standards, poor deoiling effect of oily sewage, and inconspicuous decolorization, so as to achieve safe and reliable drinking water quality and deoiling effect Good, clear water effect

Inactive Publication Date: 2010-01-20
ZIBO LUJING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Polymerized aluminum-dimethyl diallyl ammonium chloride homopolymer composite flocculant has no obvious decolorization effect on water with high chroma and high humic acid content, and the dosage is large, so the degreasing effect on oily sewage is poor
[0004] 2. The polyferric sulfate-polydimethyldiallylammonium chloride composite coagulant has very little decolorization effect on high-color raw water containing humic acid, and the increase in dosage will increase the color of the water, making it difficult to Meet national drinking water standards

Method used

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  • Macromolecular composite flocculant and preparation method and application thereof
  • Macromolecular composite flocculant and preparation method and application thereof
  • Macromolecular composite flocculant and preparation method and application thereof

Examples

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Embodiment 1

[0040] Embodiment 1 Preparation of a polymer composite flocculant

[0041] a. Preparation of polyaluminum sulfate aqueous solution: put accurately measured polyaluminum sulfate into a reaction kettle with metered water in advance, stir and dissolve at a temperature of 4°C-42°C, and adjust to contain 10% polyaluminum sulfate (as Al 2 o 3 meter) aqueous solution;

[0042] b. Preparation of polydimethyldiallyl ammonium chloride solution: put the accurately measured polydimethyldiallyl ammonium chloride colloid into the reaction kettle that has been put into the metered water in advance, at a temperature of 4°C-42°C , stir to dissolve, and adjust the intrinsic viscosity between 2.4dl / g;

[0043] c. Preparation of polymer composite flocculant: the polyaluminum sulfate aqueous solution prepared in step a and the polydimethyldiallyl ammonium chloride solution prepared in step b, according to the following ratio:

[0044] Polyaluminum sulfate aqueous solution 90%

[0045] Polydime...

Embodiment 2

[0055] Embodiment 2 Preparation of another polymer composite flocculant

[0056] a. Preparation of polyaluminum sulfate aqueous solution: put accurately measured polyaluminum sulfate into a reaction kettle with metered water in advance, stir and dissolve at a temperature of 0°C-30°C, and adjust to contain 9% polyaluminum sulfate (as Al 2 o 3 meter) aqueous solution;

[0057] b. Preparation of polydimethyldiallyl ammonium chloride solution: put the accurately measured polydimethyldiallyl ammonium chloride colloid into the reaction kettle that has been put into metered water in advance, at a temperature of 0°C-30°C , stir and dissolve for 1 hour, and adjust the intrinsic viscosity between 2.6dl / g;

[0058] c. Preparation of polymer composite flocculant: the polyaluminum sulfate aqueous solution prepared in step a and the polydimethyldiallyl ammonium chloride solution prepared in step b, according to the following ratio:

[0059] Polyaluminum Sulfate Aqueous Solution 94%

[0...

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Abstract

The invention relates to a macromolecular composite flocculant and a preparation method and an application thereof, belonging to the water treatment technical field, in particular to a macromolecular composite flocculant prepared by combining polymeric aluminum sulfate and polydimethyldiallylammonium chloride and a preparation method and an application thereof. The composite flocculant comprises the following raw materials: 85-95% of polymeric aluminum sulfate water solution and 5-15% of polydimethyldiallylammonium chloride water solution. The invention provides the ideal macromolecular composite flocculant and the preparation method and the application thereof which have the advantage of simple preparation method, low production cost, wide sources of the raw materials, good decoloration effect to raw water with high chromaticity color and high humic acid, less dosage, clean and transparent treated water, safe and reliable drinking water and good deoiling effect to oily sewage. The composite flocculant can be widely used in the flocculation and defecation treatment and decoloration and deoiling treatment for drinking water, industrial circulating water, industrial wastewater and domestic wastewater.

Description

technical field [0001] The invention is a polymer composite flocculant and its preparation method and application. The invention belongs to the technical field of water treatment, and in particular relates to a polymer composite flocculant compounded by polyaluminum sulfate and polydimethyldiallylammonium chloride, a preparation method and application thereof. Background technique [0002] The method of combining inorganic flocculant and organic polymer flocculant to optimize the performance of flocculant has been reported in the literature: Chinese Patent No. 200410024480.1 "Polymeric Aluminum-Dimethyl Diallyl Ammonium Chloride Homopolymer Inorganic-Organic Composite Flocculation Agent and its preparation process”, which discloses the composite flocculant of polyaluminum and dimethyl diallyl ammonium chloride homopolymer and its preparation process; Ammonium Chloride Homopolymer Organic-Inorganic Composite Flocculant and Its Preparation Method", which discloses a composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 贾久顺
Owner ZIBO LUJING CHEM
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