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Preparation of biological coagulation aid by using plant holly and preparation method thereof

The technology of a coagulant aid and holly is applied in the field of preparing a biological coagulant by using the plant holly and its preparation, and achieves the effects of easy acquisition, rapid settlement and convenient use.

Inactive Publication Date: 2017-10-27
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another object of the present invention is to solve the problem of excessive flocculant dosage and improve the safety of drinking water existing in the flocculation technology in the existing water treatment process

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0018] Also provide a kind of preparation method of natural plant coagulation aid, this method comprises the following steps:

[0019] (1) Harvesting and processing: harvest the leaves and branches of the holly plants in the vigorous growth period and later stage, carry out air-drying treatment, and require the moisture content to be less than or equal to 3%, and store them for later use.

[0020] (2) Grinding and extraction treatment: the air-dried and preserved holly plants are pulverized with a pulverizer, and the crushing particle size is required to be less than 100 mesh, so as to obtain holly plant powder.

[0021] (3) Moist heat modification treatment:

[0022] Put the wintergreen plant powder in step (2) in an alkali-resistant container filled with warm water at 40-60°C according to a certain weight percentage, stir evenly, and soak for 20-30 minutes to obtain a mixed liquid;

[0023] Then add the modifier 1 to the liquid in the container according to a certain weight...

Embodiment 1

[0033] Firstly, the leaves and branches of the holly plants are harvested, and air-dried to obtain a water content of ≦3%. Then, the air-dried and preserved holly plants are pulverized with a pulverizer, and the crushing particle size is required to be less than 100 mesh to obtain holly plant powder. Weigh 2g of holly plant powder and place it in a beaker filled with 100ml of warm water at 40-60°C, stir evenly, and soak for 20-30 minutes to obtain a mixed liquid; then add 0.2g of modifier 1 to the liquid in the above container, After stirring evenly, continue soaking for 15-20 minutes, then add 0.4g modifier 2 to the liquid in the beaker, stir well and continue soaking for 20 minutes; Filter the mixed liquid, remove the impurities in the liquid, and obtain the filtered liquid, which is the wintergreen coagulant; seal it and store it in a cool place for later use.

Embodiment 2

[0038] Firstly, the leaves and branches of the holly plants are harvested, and air-dried to obtain a water content of ≦3%. Then, the air-dried and preserved holly plants are pulverized with a pulverizer, and the crushing particle size is required to be less than 100 mesh to obtain holly plant powder. Weigh 4g of holly plant powder and place it in a beaker filled with 100ml of 40-60°C warm water, stir evenly, soak for 20-30 minutes to obtain a mixed liquid; then add 0.4g modifier 1 to the liquid in the above container, After stirring evenly, continue soaking for 15-20 minutes, then add 0.8g modifier 2 to the liquid in the beaker, stir well and continue soaking for 20 minutes; Filter the mixed liquid, remove the impurities in the liquid, and obtain the filtered liquid, which is the wintergreen coagulant; seal it and store it in a cool place for later use.

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Abstract

The invention provides a natural plant coagulation aid. The coagulation aid component formula is: by weight percentage, 1-10% of holly plant macromolecules, 0.2-2% of modifier and the rest is water. Also provided is a preparation method of the natural plant coagulant. The effect of the present invention is that the natural plant coagulant is used in conjunction with aluminum salt and iron salt flocculants, which can increase the effect of netting tiny suspended particles, and the formed flocs have large alum flowers and settle quickly, greatly reducing the amount of flocculants used. The method effectively solves the problem of excessive flocculant dosage existing in the flocculation technology of the existing water treatment process, and improves the safety of drinking water. Adding this plant coagulant can reduce the amount of flocculant used by 30-50%, and can reach or exceed the flocculation effect of using a large amount of flocculant alone. It has certain application value and broad application prospect.

Description

technical field [0001] The invention relates to a coagulant aid and a preparation method thereof, in particular to a biological coagulant aid prepared by utilizing plant holly and a preparation method thereof. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 张福
Owner TIANJIN UNIV OF SCI & TECH
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