Flocculant preparation method

A manufacturing method and flocculant technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of difficult storage of treatment agents, poor flocculation/degradation effect, etc., and achieve good flocculation effect, high turbidity removal rate, COD The effect of high removal rate

Inactive Publication Date: 2019-05-21
江苏中丽新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above distinguishing features, the present invention provides a flocculant manufacturing method, which mainly solves the problems that the existing treatment agents are not easy to store, poor flocculation / degradation effect, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The flocculant is prepared by the following method:

[0063] A. The cellulose is washed with water;

[0064] B. Immerse the cellulose in a solution with a pH of 7.5, extract for 1 hour, and wash twice with water;

[0065] C. Freeze the cellulose processed in step B in a -5°C environment;

[0066] D. Take out the cellulose after the treatment in step C, place it in an acidic solution with a pH of 6.5, soak it, and when it returns to 5°C, take it out and wash it twice;

[0067] E. drying and crushing the cellulose after step D is cleaned into powder;

[0068] F. Put the powder in 0°C water;

[0069] G. Keep the temperature at 0°C, stir, and slowly add alkaline reagents to adjust the pH to 7.3 to obtain a uniform and transparent solution;

[0070] H. Add the above solution into a vacuum sealed kettle, add an oxidizing agent, and heat up to 40° C. for 2 hours;

[0071] I. The solution treated in step H is rotary evaporated and dried.

Embodiment 2

[0073] The flocculant is prepared by the following method:

[0074] A. The cellulose is washed with water;

[0075] B. Immerse the cellulose in a solution with a pH of 8, extract for 2 hours, and wash with water for 3 times;

[0076] C. Freeze the cellulose processed in step B in a -10°C environment;

[0077]D. Take out the cellulose after the treatment in step C, place it in an acidic solution with a pH of 6.8, soak it, and when it returns to 10°C, take it out and wash it with water for 3 times;

[0078] E. drying and crushing the cellulose after step D is cleaned into powder;

[0079] F. Place the powder in water at 4°C;

[0080] G. Keep the temperature at 4°C, stir, and slowly add alkaline reagents to adjust the pH to 7.5 to obtain a uniform and transparent solution;

[0081] H. Put the above solution into a vacuum-sealed kettle, add an oxidizing agent, and heat up to 50° C. for 3 hours;

[0082] I. The solution treated in step H is rotary evaporated and dried.

Embodiment 3

[0084] The flocculant is prepared by the following method:

[0085] A. The cellulose is washed with water;

[0086] B. Immerse the cellulose in a solution with a pH of 7.8, extract for 1.5 hours, and wash with water for 3 times;

[0087] C. Freeze the cellulose processed in step B in a -7°C environment;

[0088] D. Take out the cellulose after the treatment in step C, place it in an acidic solution with a pH of 6.7, soak it, and when it returns to 7°C, take it out and wash it twice;

[0089] E. drying and crushing the cellulose after step D is cleaned into powder;

[0090] F. Put the powder in 2°C water;

[0091] G. Keep the temperature at 2°C, stir, and slowly add alkaline reagents to adjust the pH to 7.4 to obtain a uniform and transparent solution;

[0092] H. Put the above solution into a vacuum sealed kettle, add an oxidizing agent, and heat up to 45°C for 2.5 hours;

[0093] I. The solution treated in step H is rotary evaporated and dried.

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Abstract

The invention relates to a flocculant preparation method. The flocculant preparation method comprises the steps of A, cleaning cellulose; B, immersing the cellulose into a solution with the PH of 7.5-8, conducting digestion for 1-2 h, and conducting cleaning 2-3 times; C, putting the cellulose in an environment of minus 5-minus 10 DEG C to be frozen; D, taking out the cellulose, putting the cellulose into an acid solution with the PH of 6.5-6.8, conducting soaking, and after the temperature goes back to 5-10 DEG C, taking out the cellulose to be cleaned 2-3 times; E, drying and crushing the cellulose into powder; F, putting the powder in water at the temperature of 0-4 DEG C; G, maintaining the temperature to be 0-4 DEG C, conducting stirring, and meanwhile slowly adding an alkaline reagent to adjust the PH to 7.3-7.5 to obtain a uniform and transparent solution; H, adding the solution into a vacuum sealing kettle, adding an oxidizing agent, and raising the temperature to 40-50 DEG C for a reaction of 2-3 h; I, rotatably evaporating the solution. The method has the advantages that a prepared flocculant is safe and environmentally friendly, inhibits bacteria, can be degraded, and has a good flocculation effect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a flocculant manufacturing method. Background technique [0002] my country is one of the 13 water-poor countries designated by the United Nations, which is short of water resources. At the same time, it is facing severe water pollution problems. Water treatment technology is roughly divided into two categories: biological treatment technology and physical and chemical treatment technology. Among them, biological treatment technology is the main process of wastewater purification. With the continuous development of industry, the environmental pollution is becoming more and more serious, and people's requirements for the environment are constantly improving. The physical and biological methods in the traditional water treatment process often cannot obtain satisfactory results. [0003] Generally, in the sewage treatment system that uses various inorganic co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 汤立芹
Owner 江苏中丽新材料有限公司
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