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Method for producing coagulant aid through utilizing cow dung

A technology of coagulation aid and cow dung, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., which can solve the problems of high cost and small production scale.

Inactive Publication Date: 2013-03-27
溧阳市天目湖保健品有限公司
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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] Prepare the coagulant as follows:

[0019] (1) Air-drying and digestion of cow dung: air-dry the collected fresh cow dung and crush it into powder, then place the dry cow dung powder in 20% hydrochloric acid solution, and stir for 10 minutes;

[0020] (2) Modification of cow dung: first soak the cow dung treated in step (1) in a triethylamine solution with a pH of 13 for 40 minutes, and then place the soaked cow dung in a modification solution at 45 degrees Celsius , the modification reaction time is 90 minutes, and the modification solution is 1% acrylic acid solution;

[0021] (3) Removal of solid residues: first sieve the above liquid with a 100μm sieve to remove large particles of debris; then use a 30μm filter membrane to filter;

[0022] (4) Adjustment of pH value: using sodium acetate to adjust the pH of the liquid obtained in step (3) to 6-7;

[0023] (5) Sealing and storage: Add 50ppm formaldehyde, then seal it in a plastic container, and store it in a cool p...

Embodiment 2

[0027] Prepare the coagulant as follows:

[0028] (1) Air-drying and digestion of cow dung: Air-dry the collected fresh cow dung and crush it into powder, then place the dried cow dung powder in 20% hydrochloric acid solution, and stir for 15 minutes;

[0029] (2) Modification of cow dung: First, soak the cow dung treated in step (1) in a triethylamine solution with pH 13 for 30-40 minutes, and then place the soaked cow dung in a modified place at 50 degrees Celsius. In the solution, the modification reaction time is 70 minutes, and the modification solution is 1% acryloyl ester solution;

[0030] (3) Removal of solid residues: first sieve the above liquid with a 100μm sieve to remove large particles of debris; then use a 30μm filter membrane to filter;

[0031] (4) Adjustment of pH value: using sodium acetate to adjust the pH of the liquid obtained in step (3) to 6-7;

[0032] (5) Sealing and storage: Add 50ppm formaldehyde, then seal it in a plastic container, and store it...

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PUM

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Abstract

The invention provides a method for producing a coagulant aid through utilizing cow dung. According to the method, the cow dung is utilized as a main raw material, and the cow dung is subjected to a series of processing to obtain the coagulant aid which can be used for wastewater treatment. The method has the characteristics that the selected material is environment-friendly and waste recovery 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 cow dung 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 present. The...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 彭江晨芮旭婷
Owner 溧阳市天目湖保健品有限公司
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