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Flocculating agent and preparation method of flocculating agent

A flocculant and formula technology, applied in the field of flocculant and its preparation, can solve the problems of low coagulation efficiency and unsatisfactory effect, and achieve high coagulation efficiency and good effect

Inactive Publication Date: 2016-06-22
范永禧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of flocculants in the prior art, but there are generally problems of low coagulation efficiency and unsatisfactory effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The flocculant raw material formula of the present embodiment is made up of each component of following parts by weight:

[0021] 50 parts of polyacrylamide;

[0022] 5 parts of magnesium sulfate;

[0023] Attapulgite 5 parts;

[0024] 5 parts of aluminum sulfate.

[0025] The preparation process of the flocculant of the present embodiment is as follows:

[0026] A1, put attapulgite into sulfuric acid solution, stir for 5 minutes, soak for 20 minutes, the concentration of sulfuric acid solution is 1.5mol / L;

[0027] A2, add polyacrylamide, stir for 10 minutes;

[0028] A3, add magnesium sulfate and aluminum sulfate, continue stirring for 10 minutes, then soak for 30 minutes;

[0029] A4. After filtering, take the filter residue and dry it to obtain flocculant.

[0030] The flocculant obtained in this embodiment has high coagulation efficiency and good effect, and is especially suitable for treating printing and dyeing wastewater. After testing, taking 0.1 g of th...

Embodiment 2

[0032] This example is basically the same as Example 1, except that the raw material formula of the flocculant in this example is composed of the following components in parts by weight:

[0033] 60 parts of polyacrylamide;

[0034] 7 parts of magnesium sulfate;

[0035] 7 parts of attapulgite;

[0036] 6 parts of aluminum sulfate.

[0037] The flocculant provided in this example is more efficient than that in Example 1. After testing, taking 0.1 g of the flocculant prepared in this example and adding it to 1 L of printing and dyeing wastewater only takes 24 minutes to achieve the treatment effect of Example 1. When treated for 30 minutes, the decolorization rate of printing and dyeing sewage reached 92.8%, and the removal rate of CODcr in printing and dyeing sewage was 80%.

Embodiment 3

[0039] This example is basically the same as Example 2. The difference is that this example also includes 0.5-2 parts of water hyacinth root extract. Store for 24 hours, take it out, crush it, pour in ionized water twice the mass of the water hyacinth root, soak it for 3 hours at 35~40°C, and then perform ultrasonic vibration for 30 minutes, and the filtrate obtained by filtration is the water hyacinth root extract .

[0040] The preparation method of this embodiment is basically the same as that of Example 1. The difference is that in step A4, it also includes adding water hyacinth root extract to the dried filter residue, leaving it to stand for 30 minutes until it is fused, and then adding the water hyacinth root extract at temperature Low-temperature drying at 40-45°C to obtain flocculants.

[0041] The addition of water hyacinth root extract is beneficial to improve the flocculation efficiency of polyacrylamide. The flocculant in this example is more efficient than that ...

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Abstract

The invention discloses a flocculant and a preparation method thereof. The raw material formula is composed of the following components in parts by weight: 50-80 parts of polyacrylamide; 5-8 parts of magnesium sulfate; 5-8 parts of attapulgite 8 parts; 5~8 parts of aluminum sulfate. The invention discloses a flocculant and a preparation method thereof. The flocculant has high coagulation efficiency and good effect, and is especially suitable for treating printing and dyeing wastewater. The decolorization rate exceeds 90% and the CODcr removal rate is greater than 78%.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a flocculant and a preparation method thereof. Background technique [0002] In the process of sewage treatment, it is often necessary to use flocculants to quickly aggregate the harmful components in the sewage to form sediments, and then filter them to achieve the purpose of water purification. There are many kinds of flocculants in the prior art, but the problems of low coagulation efficiency and unsatisfactory effect generally exist. [0003] Therefore, the prior art needs to be improved. Contents of the invention [0004] The object of the present invention is to provide a flocculant and a preparation method thereof, which are suitable for treating printing and dyeing wastewater. The flocculant of the present invention has high coagulation efficiency and good effect. [0005] The technical scheme of the present invention is as follows: a kind of flocculant, wherein, its r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F103/30
CPCC02F1/5236C02F1/56C02F2103/30
Inventor 范永禧
Owner 范永禧
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