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Organic-inorganic matter copolymerization flocculating agent and preparation method thereof

A flocculant and inorganic technology, applied in the field of organic-inorganic copolymer flocculants and their preparation, can solve the problems of low COD removal rate, high energy consumption and high production cost, and achieve the improvement of flocculation capacity, production cost and raw material reduction. cost effect

Inactive Publication Date: 2012-07-04
TONGXIANG LONGXIN PRINTING & DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an organic-inorganic copolymer flocculant to solve the technical problems of low COD removal rate, high production cost and large energy consumption of the organic-inorganic copolymer decolorization flocculant existing in the prior art
[0004] Another object of the present invention is to provide a method for preparing an organic-inorganic copolymer flocculant to solve the problems of low COD removal rate, high production cost and large energy consumption of the organic-inorganic copolymer decolorization flocculant existing in the prior art. technical problem

Method used

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  • Organic-inorganic matter copolymerization flocculating agent and preparation method thereof
  • Organic-inorganic matter copolymerization flocculating agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The organic-inorganic copolymer flocculant of this embodiment is used for industrial wastewater treatment, including: aluminum-containing pickling waste liquid and decolorizing agent, and the decolorizing agent further includes dicyandiamide, formaldehyde, urea and carboxyl. In 1000g of organic-inorganic copolymer flocculant, the weight ratio of various components is as follows: 700g of aluminum-containing pickling waste liquid, 300g of decolorizing agent, including: 60g of dicyandiamide, 90g of formaldehyde, 105g of urea, and 45g of carboxyl.

Embodiment 2

[0023] The organic-inorganic copolymer flocculant of this embodiment is used for industrial wastewater treatment, including: aluminum-containing pickling waste liquid and decolorizing agent, and the decolorizing agent further includes dicyandiamide, formaldehyde, urea and carboxyl. In 1000g of organic-inorganic copolymer flocculant, the weight ratio of various components is as follows: 857g of aluminum-containing pickling waste liquid, 143g of decolorizing agent, including: 44g of dicyandiamide, 74g of formaldehyde, 14g of urea, and 11g of carboxyls.

Embodiment 3

[0025] The organic-inorganic copolymer flocculant of this embodiment is used for industrial wastewater treatment, including: aluminum-containing pickling waste liquid and decolorizing agent, and the decolorizing agent further includes dicyandiamide, formaldehyde, urea and carboxyl. In 1000g of organic-inorganic copolymer flocculant, the weight ratio of various components is as follows: 900g of aluminum-containing pickling waste liquid, 100g of decolorizing agent, including: 40g of dicyandiamide, 44g of formaldehyde, 15g of urea, and 1g of carboxyl.

[0026] In the above examples, the above-mentioned carboxyl groups are all used sodium carboxymethyl cellulose, and the aluminum-containing pickling waste liquid is all used general pharmaceutical factory waste acid. It should be noted that the above examples are only three proportioning implementations of the organic-inorganic copolymer flocculant of the present invention, but this does not limit the present invention. The organic-...

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Abstract

The invention relates to an organic-inorganic copolymer flocculating agent and a preparation method thereof. The organic-inorganic copolymer flocculating agent is used for treating industrial waste water and comprises the following components in percentage by weight: 70 to 90 percent of aluminum-containing acid-washing waste liquid and 10 to 30 percent of decoloring agent; and the decoloring agent further comprises the following components in percentage by weight: 20 to 40 percent of dicyandiamide, 30 to 60 percent of formaldehyde, 15 to 35 percent of urea and 1 to 15 percent of carboxyl group. The method lowers production cost and enhances the flocculating capability of a product by selecting raw materials and optimizing the process, has the advantages of easily-controlled preparation process, stable operation, big product floc, high sedimentation velocity, high decolouring ratio, high COD removing rate and low cost and can be widely applied to COD degradation and decoloration of various printing and dyeing waste water.

Description

technical field [0001] The invention relates to water treatment technology, in particular to an organic-inorganic copolymer flocculant with low energy consumption and good wastewater treatment effect and a preparation method thereof. Background technique [0002] At present, there are many kinds of cationic flocculants. Among them, guanidine resin flocculants formed by polycondensation of formaldehyde, dicyandiamide and ammonium chloride are widely used in various industrial wastewater treatment. The preparation method of this type of cationic flocculant has been reported, such as Chinese patents 95101739, 99116150.5, etc., which propose a guanidine resin flocculant composed of dicyandiamide, formaldehyde, ammonium chloride, urea, etc., because the molecular weight of this type of product is relatively small , the flocs produced are small and difficult to settle, and the production cost of the medicament is relatively high, which is limited to a certain extent in practical a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 黄克
Owner TONGXIANG LONGXIN PRINTING & DYEING