Preparation method of sewage treatment agent

A technology of sewage treatment agent and bentonite, which is applied in the field of preparation of sewage treatment agent, can solve the problems of weak inorganic flocculant partial sewage treatment capacity, difficulty of inorganic flocculant and high molecular polymer, and poor physical method treatment effect, etc. Good biocompatibility, balanced sedimentation velocity, and the effect of adsorption performance protection

Inactive Publication Date: 2018-06-08
CHANGSHA WUDAO IND DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are physical, chemical, biological, comprehensive and other methods to deal with the pollution of water resources, but most of the physical methods have problems of poor treatment effect and unstable treatment rate; the cost of biological methods is too high to be popularized and used; Chemical methods are used to treat sewage, but the existing sewage treatment agents have secondary pollution problems in their reagent components, which will also have a certain impact on the environment
Inorganic flocculant composite polymer has become the most researched flocculant at present, which has the characteristics of good flocculation effect and low toxicity, but the combination of inorganic flocculant and polymer is a difficult problem in the subject research. Combined in the form of wrapping, which weakens the sewage treatment capacity of the inorganic flocculant part

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of sewage treatment agent, comprises the following steps:

[0023] S1. In parts by weight, 20 parts of sodium bentonite and 2 parts of hydrochloric acid with a mass fraction of 20% are added to 50 parts of sodium lauryl sulfate with a mass fraction of 1.6%, and then ultrasonicated at 82°C for 30 minutes, and the ultrasonication ends Finally, filter, then wash to neutrality, and obtain modified bentonite after drying;

[0024] S2. In parts by weight, add 4 parts of chitosan to 50 parts of acetic acid aqueous solution with a mass fraction of 1.2%, stir for 20min, then add 12 parts of modified bentonite, stir at 90°C for 1.5h, then filter and wash , drying and pulverizing to obtain intercalation bentonite;

[0025] S3. In parts by weight, add 0.13 parts of ammonium persulfate to 6 parts of deionized water to dissolve, then add 20 parts of intercalation bentonite, stir evenly, and leave it in a sealed place in the dark at 15°C for 30 minutes to...

Embodiment 2

[0029] A kind of preparation method of sewage treatment agent, comprises the following steps:

[0030] S1. In parts by weight, add 20 parts of sodium bentonite and 4 parts of hydrochloric acid with a mass fraction of 20% to 50 parts of sodium lauryl sulfate with a mass fraction of 1.5%, and then ultrasonicate at 80°C for 45min, and the ultrasonication ends Finally, filter, then wash to neutrality, and obtain modified bentonite after drying;

[0031] S2. In parts by weight, add 3 parts of chitosan into 50 parts of chitosan in 1.1% aqueous acetic acid solution, stir for 30 minutes, then add 10 parts of modified bentonite, stir for 2 hours at 88° C., then filter, wash, Drying and crushing to obtain intercalated bentonite;

[0032] S3. In parts by weight, add 0.12 parts of ammonium persulfate to 6 parts of deionized water to dissolve, then add 19 parts of intercalated bentonite, stir evenly, and leave it in a sealed place in the dark at 30°C for 20 minutes to obtain polymerized s...

Embodiment 3

[0036] A kind of preparation method of sewage treatment agent, comprises the following steps:

[0037] S1. In parts by weight, add 20 parts of sodium bentonite and 3 parts of hydrochloric acid with a mass fraction of 20% to 50 parts of sodium lauryl sulfate with a mass fraction of 2%, and then sonicate at 76°C for 40min, and the sonication ends Finally, filter, then wash to neutrality, and obtain modified bentonite after drying;

[0038] S2. In parts by weight, add 5 parts of chitosan to 50 parts of acetic acid aqueous solution with a mass fraction of 1%, stir for 25 minutes, then add 13 parts of modified bentonite, stir at 85°C for 1.8 hours, then filter and wash , drying and pulverizing to obtain intercalation bentonite;

[0039] S3. In parts by weight, add 0.14 parts of ammonium persulfate to 6 parts of deionized water to dissolve, then add 18 parts of intercalated bentonite, stir evenly, and leave it in a sealed place in the dark at 17°C for 35 minutes to obtain polymeriz...

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Abstract

The invention discloses a preparation method of a sewage treatment agent. The preparation method comprises the following steps of firstly, modifying sodium bentonite with dilute hydrochloric acid andlauryl sodium sulfate, afterwards, intercalating with chitosan, adsorbing an ammonium persulfate initiator by using the intercalated bentonite, next, adding 0.32 to 0.41 part of sodium hydroxide into50 parts of water, next, adding 3 to 4 parts of acrylic acid, 6 to 8 parts of acrylamide, 0.02 to 0.04 part of maleic anhydride and 0.002 to 0.003 part of polymerization inhibitor in sequence, continuously agitating at 50 to 55 DEG C, afterwards, adding 20 parts of polymerization seed, 0.08 to 0.11 part of sodium sulfite and 0.5 to 0.6 part of copper sulfate in sequence, reacting for 5min to 8min,subsequently, adding 0.02 to 0.05 part of N,N-methylene bisacrylamide, continuously reacting for 50min to 60min, afterwards, filtering, firstly washing by using desorption liquid, then washing to beneutral by using water, and finally drying and crushing to obtain the sewage treatment agent. According to the sewage treatment agent prepared by the preparation method, the bentonite is closely connected with a polymer, and the treatment effect on heavy metal contaminated water is good.

Description

technical field [0001] The invention relates to a preparation method of a sewage treatment agent. Background technique [0002] Due to population growth and economic development, a series of problems affecting the quality of resources caused by excessive exploitation and irrational development and utilization of resources have directly threatened the survival of us and future generations. Our country is also facing these problems. Our country is a country with insufficient water resources and medical resources. How to alleviate the problems of water resource medical shortage and pollution has become an urgent problem. [0003] At present, there are physical, chemical, biological, comprehensive and other methods to deal with the pollution of water resources, but most of the physical methods have problems of poor treatment effect and unstable treatment rate; the cost of biological methods is too high to be popularized and used; Chemical methods are used to treat sewage, but t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/56C08F220/06C08F222/06C08F222/38C08F2/44B01J20/26B01J20/30C02F1/28C02F101/20
Inventor 不公告发明人
Owner CHANGSHA WUDAO IND DESIGN CO LTD
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