Method for producing coagulant aid through utilizing winter bamboo shoot skins

A technology of coagulation aid and winter bamboo shoot skin, which can be applied in the direction of flocculation/sedimentation water/sewage treatment, etc., which can solve the problems of high cost and small production scale.

Active Publication Date: 2013-03-27
LIYANG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, because biological flocculants are still in the research stage, the production scale is small, the cost is high, and they have not been widely used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Make the coagulant as follows:

[0019] (1) Pretreatment of winter bamboo shoots: dry the collected fresh winter bamboo shoots, then cut the dried winter bamboo shoots into small pieces less than 1 cm square with a grinder, and then place the dried winter bamboo shoots at a low temperature of -10 degrees Celsius After 12 hours, take it out and use a grinder to grind the winter bamboo shoot skin into a fine powder of less than 40 mesh;

[0020] (2) Modification of winter bamboo shoot skin powder: first soak the winter bamboo shoot skin powder processed in step (1) in 12% sodium hydroxide or potassium hydroxide solution for 2 hours, then place the soaked winter bamboo shoot skin powder In the modification solution at 45 degrees Celsius, add an initiator at the same time, the modification reaction time is 90 minutes, the modification solution is 1% acrylic acid solution, and the initiator is Fentons reagent;

[0021] (3) Removal of solid residues: first sieve the above li...

Embodiment 2

[0027] Make the coagulant as follows:

[0028] (1) Pretreatment of winter bamboo shoots: dry the collected fresh winter bamboo shoots, then cut the dried winter bamboo shoots into small pieces less than 1 cm square with a grinder, and then place the dried winter bamboo shoots at a low temperature of -20 degrees Celsius After 10 hours, take it out and use a grinder to grind the winter bamboo shoot skin into a fine powder of less than 60 mesh;

[0029] (2) Modification of winter bamboo shoot powder: first soak the winter bamboo shoot powder processed in step (1) in 12% sodium hydroxide or potassium hydroxide solution for 2.4 hours, then place the soaked winter bamboo skin powder In the modification solution at 50 degrees Celsius, add an initiator at the same time, the modification reaction time is 80 minutes, the modification solution is 0.7% acryloyl ester solution, and the initiator is Fentons reagent;

[0030] (3) Removal of solid residues: first sieve the above liquid with ...

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PUM

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Abstract

The invention provides a method for producing a coagulant aid through utilizing winter bamboo shoot skins. According to the method, the winter bamboo shoot skins are utilized as a main raw material, and the winter bamboo shoot skins are subjected to a series of processing to obtain the coagulant aid for sewage treatment. The method has the characteristics that selected material is environment-friendly and waste utilization is realized.

Description

technical field [0001] The invention relates to a preparation method of a coagulation aid, in particular to a preparation method of a coagulation aid using bamboo shoot skin as a main raw material. Background technique [0002] Among water treatment methods, flocculation is one of the important methods. The currently used flocculants and coagulants are mainly inorganic compounds and synthetic organic compounds. The large amount of inorganic flocculants is easy to cause secondary pollution, especially the large-scale application of aluminum salts, which has an increasingly prominent impact on the environment, especially for the treatment of drinking water. A large amount of aluminum salts will lead to an increase in the incidence of Alzheimer's disease. Due to the use of most artificially synthesized polymer organic compounds as flocculants or coagulants, monomers remaining in water are toxic and harmful to human health, such as polyacrylamide, which is commonly used at pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 彭江晨芮旭婷
Owner LIYANG TECH DEV CENT
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