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Natural high polymer flocculant and preparation method thereof

A natural polymer and flocculant technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems that the research and application of natural polymer flocculants have not been reported, and achieve easy industrialization, low price, and production cost advantages Effect

Active Publication Date: 2014-06-25
长春一汽综合瑞曼迪斯环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are patent applications for the modification of lignin or humic acid (CN102583684A, CN102745789A), but the research and application of lignin and humic acid copolymerization into natural polymer flocculants have not been reported

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Weigh 80 g of alkali lignin and dissolve it in 500 ml of water. Weigh 80 g of sodium humate and dissolve it in 500 ml of water. Mix the above two solutions and raise the temperature to 50 °C. Add 10 g of potassium persulfate initiator, and react at constant temperature for 4 hours while stirring. Add 500 ml of ethanol to the reacted solution to precipitate the alkali lignin humic acid sodium copolymer, filter and wash it, and dry it in a desiccator at 50°C for 12 hours to obtain a natural polymer flocculant of lignin humic acid copolymerization .

Embodiment 2

[0015] Example 2: Weigh 120 g of lignosulfonate and dissolve it in 500 ml of water. Weigh 120 g of potassium humate and dissolve it in 500 ml of water. Mix the above two solutions and raise the temperature to 50 °C. Add 15 g of ammonium persulfate initiator, and react at constant temperature for 5 hours while stirring. Add 500 ml of acetone to the reacted solution to precipitate the lignosulfonate potassium humate copolymer, filter and wash it, and dry it in a desiccator at 65°C for 8 hours to obtain a natural polymer of lignin humic acid copolymer flocculant.

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PUM

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Abstract

The invention relates to a natural high polymer flocculant and a preparation method thereof. An initiator potassium persulfate or ammonium persulfate is added into lignins and humic acids used as raw materials to initiate copolymerization of the lignins and humic acids, thereby preparing the lignin / humic acid copolymer natural high polymer flocculant. The preparation method has the characteristics of mild reaction conditions and simple technique. The prepared lignin / humic acid copolymer natural high polymer flocculant has favorable flocculation action on heavy metal wastewater, dye wastewater, montmorillonite suspensions and the like. By adopting the cheap and accessible natural high polymers as the raw materials, the preparation method has great advantage in production cost, and can easily implement industrialization and generate favorable economic benefit.

Description

technical field [0001] The invention relates to a natural polymer flocculant and a preparation method thereof, belonging to the technical field of natural polymer materials and water treatment flocculants. 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. Natural polymers have the advantages of wide sources, low price, many active groups, non-toxic, biodegradable, etc., and can be used to develop new and efficient environmentally friendly flocculants. [0003] L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C08H7/00C08H99/00
Inventor 楼涛汪学军
Owner 长春一汽综合瑞曼迪斯环保科技有限公司
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