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Preparation method of polyphenol biomass flocculating agent

A biomass and flocculant technology, applied in the field of fine chemicals, can solve the problems of high residual water, low residual rate in water, large flocs, etc. Effect

Active Publication Date: 2016-03-30
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the current flocculants are all water-soluble polymer compounds, there are disadvantages such as large flocs and many residues in the water during use, and a method for preparing flocculants from camellia oleifera husks is provided, which is non-toxic, environmentally friendly, No safety hazard, low cost, low residual rate in water, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation of modified casuarina bark particles

[0022] Weigh 50 kg of casuarina bark particles that have been crushed to a particle size range of 125-150 μm in the reaction kettle, add 500 kg of formaldehyde solution with a mass concentration of 1%, stir and add concentrated hydrochloric acid to adjust the pH value of the solution 3, stirred and reacted at 80°C for 2 hours; filtered, washed the filter residue with distilled water until the filtrate was neutral, and dried the filter residue at 85-90°C to constant weight to obtain modified casuarina bark particles for future use.

[0023] (2) Preparation of polyphenol biomass flocculant

[0024] Weigh 6 kg of acrylamide into the reaction kettle, add 180 kg of distilled water, heat up to 90°C, stir and add 0.06 kg of potassium persulfate, stir and react at 90°C for 2 hours; add 48 kg of modified casuarina bark Granules, stirred and reacted at 80°C for 1 hour; added 4 kg of methacryloyloxyethyltrimethylammonium chlo...

Embodiment 2

[0027] (1) Preparation of modified casuarina bark particles

[0028] Weigh 50 kg of casuarina bark particles that have been crushed to a particle size range of 125 to 150 μm in the reaction kettle, add 500 kg of glutaraldehyde aqueous solution with a mass concentration of 1%, stir and add concentrated hydrochloric acid to adjust the concentration of the solution The pH value is 3, stirred and reacted at 80° C. for 2 hours; filtered, and the filter residue is washed with distilled water until the filtrate becomes neutral, and the filter residue is dried at 85-90° C. to constant weight to obtain modified casuarina bark particles, which are set aside.

[0029] (2) Preparation of polyphenol biomass flocculant

[0030] Weigh 6 kg of acrylamide into the reaction kettle, add 180 kg of distilled water, heat up to 90°C, stir and add 0.06 kg of potassium persulfate, stir and react at 90°C for 2 hours; add 48 kg of modified casuarina bark Granules, stirred and reacted at 80°C for 1 hour...

Embodiment 3

[0033] (1) Preparation of modified casuarina bark particles

[0034] Weigh 50 kg of casuarina bark particles that have been crushed to a particle size range of 125-150 μm in the reaction kettle, add 500 kg of formaldehyde solution with a mass concentration of 1%, stir and add concentrated hydrochloric acid to adjust the pH value of the solution 3, stirred and reacted at 80°C for 2 hours; filtered, washed the filter residue with distilled water until the filtrate was neutral, and dried the filter residue at 85-90°C to constant weight to obtain modified casuarina bark particles for future use.

[0035] (2) Preparation of polyphenol biomass flocculant

[0036] Weigh 6 kg of acrylamide into the reaction kettle, add 180 kg of distilled water, heat up to 90°C, stir and add 0.06 kg of potassium persulfate, stir and react at 90°C for 2 hours; add 42 kg of modified casuarina bark Granules, stirred and reacted at 80°C for 1 hour; added 4 kg of methacryloyloxyethyltrimethylammonium chlo...

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PUM

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Abstract

The invention relates to a preparation method of a polyphenol biomass flocculating agent, and belongs to the field of fine chemicals. The preparation method comprises following steps: firstly acrylamide is uniformly mixed with water, potassium peroxodisulfate is added, and an obtained mixture is stirred at 80 DEG C for 2h of reaction; an obtained product is filtered and washed, and an obtained filter residue is dried at 85 to 90 DEG C until weight is constant so as to obtain a modified polyphenol biomass; the modified polyphenol biomass particles, potassium peroxodisulfate, and methacryloyloxyethyl trimethyl ammonium chloride are added into acrylamide step by step, reaction is carried out for a certain period of time, and an obtained product is dried and smashed so as to obtain the polyphenol biomass flocculating agent. The polyphenol biomass flocculating agent can be used for treating domestic wastewater, and waste water of the fields such as food, paper and paper pulp, light industry, chemical industry, and oil and gas processing, is nontoxic, is friendly to the environment, possesses no potential safety hazard, and is low in cost. The raw materials of the polyphenol biomass flocculating agent are cheap, and are widely available; flocculation effect is excellent; and the polyphenol biomass flocculating agent is convenient to degrade, and is safe to use.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a preparation method of a polyphenol biomass flocculant. Background technique [0002] Flocculation is one of the most widely used methods in wastewater treatment, which has the characteristics of simple process and low cost. The flocculants widely used in the industry mainly include inorganic flocculants and organic synthetic polymer flocculants. The dosage of inorganic flocculants is large, and the amount of sludge is large; the price of organic synthetic polymer flocculants is high, it is difficult to biodegrade, and some residual monomers are toxic, which is limited in the actual application of wastewater treatment. [0003] At present, flocculants are all water-soluble polymer compounds, and there are disadvantages such as large flocs and many residues in water during use. At present, a large amount of polyphenolic biomass such as Casuarina equisetifolia bark, black wattle ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/56C08F220/34C02F1/56
CPCC02F1/56C08F289/00C08F220/56C08F220/34
Inventor 卢玉栋吴长机游瑞云
Owner FUJIAN NORMAL UNIV
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