CN108862544A - A kind of sewage treatment composite oxidant and preparation method thereof - Google Patents
A kind of sewage treatment composite oxidant and preparation method thereof Download PDFInfo
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- CN108862544A CN108862544A CN201810680059.8A CN201810680059A CN108862544A CN 108862544 A CN108862544 A CN 108862544A CN 201810680059 A CN201810680059 A CN 201810680059A CN 108862544 A CN108862544 A CN 108862544A
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- oxidant
- solution
- acid
- sewage treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
Abstract
A kind of sewage treatment composite oxidant, is mainly made of oxidant A and oxidant B, and wherein oxidant A includes sodium chlorite solution, oxidation promoter, water；Oxidant B includes glacial acetic acid, hydrogen peroxide, the concentrated sulfuric acid, and Compound-acid after first respectively configuring oxidant A, oxidant B, then is mixed in a certain proportion and can be prepared by sewage treatment composite oxidant.Sewage treatment composite oxidant preparation cost of the invention is low, good to sewage treatment rate height, effect.Using composite oxidant of the invention, on the basis of original oxidant, reaction efficiency, sewage after processing can further improve, COD removal rate significantly improves, and reaction efficiency improves 15-20%, can be widely applied in the wastewater treatment in the fields such as pharmacy, printing and dyeing.
Description
Technical field
The present invention relates to water treatment field more particularly to a kind of configurations and application method of water process composite oxidant.
Background technique
In recent years, with the rapid industrial development in our country, water pollution situation is got worse.Especially in chemical industry, pharmacy, printing and dyeing
Equal fields, there are a large amount of high pollutions in enterprise, sewage difficult to degrade is urgently handled in process of production.Therefore, each enterprise in recent years
Also pay much attention into the degradation problem for producing waste water, waste water is handled using a variety of methods, to reach discharged wastewater met the national standard
Purpose.Currently, the main method of China's processing waste water has flocculent precipitation, oxidation-reduction method, bioanalysis etc..Wherein, it aoxidizes
Because bactericidal effect is good, the advantages such as universality and apparatus and process are simple are widely used in the processing of all types of industries waste water method.Oxygen
Change method utilizes oxidizing species, the organic matter being biodegradable can will be difficult in waste water, such as most pesticides and insecticide,
Phenol, cyanide, and cause coloration, the substance of stink etc. and effectively degraded.The pollutant that can will be also dissolved in the water simultaneously
It is oxidized to substance that is not soluble in water and being easy to be separated from the water out.Using composite oxidant technology, oxidation can further improve
The oxidisability and oxidation duration of agent, improve reaction efficiency.
Summary of the invention
The object of the invention is to the oxidisability in order to further increase oxidant, accelerate oxidant and imitate to the processing of sewage
Rate, the product have preparation process simple, and product uses stable feature.
The purpose of the present invention is achieved through the following technical solutions.
A kind of sewage treatment composite oxidant, it is characterised in that it is mixed in proportion by oxidant A and oxidant B,
Middle oxidant A includes the raw material of following mass percent concentration：Mass fraction is 10 % of sodium chlorite solution-of 10%-25%
20 %, oxidation promoter 1 %-3 %, water 75-85%；Oxidant B includes the raw material of following mass percent：Mass fraction is 50%
Glacial acetic acid aqueous solution 50%- 65%, mass fraction are the 15 %-30 % of hydrogen peroxide of 30 %, the concentrated sulfuric acid 1 that mass fraction is 98%
% -3%, Compound-acid 5%-15%.
The sewage treatment composite oxidant, it is characterised in that the oxidation promoter is that Sodium Polyacrylate or hydrolysis are poly-
Maleic anhydride is one of, wherein the relative molecular weight of selected Sodium Polyacrylate is 5000-15000, selected hydrolyzed polymaleic anhydride
The molecular weight of acid anhydride be 400-800, preferably relative molecular mass be 8000 Sodium Polyacrylate.
The sewage treatment composite oxidant, it is characterised in that the Compound-acid is in citric acid, phosphoric acid or salicylic acid
One or two compound, the citric acid or phosphoric acid or mass fraction that preferred mass score is 0.1% are 0.05% citric acid
1 is pressed with 0.05% phosphoric acid:Compound-acid made of 1 ratio compounding.
A kind of preparation method of above-mentioned sewage treatment composite oxidant, it is characterised in that：Include the following steps：
（1）The preparation of oxidant A：Prepare the sodium chlorite solution and then measure chlorous acid in proportion that mass fraction is 10%-25%
Sodium solution, oxidation promoter and water are configured to solution, then utilize 400 g/L sodium hydroxides or potassium hydroxide solution, will be molten
The pH of liquid is adjusted within the scope of 12-14 to get oxidant solution A；
（2）The preparation of oxidant B：Prepare the glacial acetic acid aqueous solution that mass fraction is 50%, the hydrogen peroxide that mass fraction is 30 %
Compound-acid, is first slowly added in glacial acetic acid aqueous solution in proportion, is configured to solution by solution, the Compound-acid that mass fraction is 0.1%
1, separately 98% concentrated sulfuric acid is slowly added in hydrogenperoxide steam generator, is configured to solution 2, then solution 2 is slowly added in solution 1,
It is stood within the scope of 20-25 DEG C for 24 hours, oxidant B is made；
（3）The preparation of sewage treatment composite oxidant：Oxidant B is slowly added into oxidant A in proportion, keeps the two mixed
It closes, controls the pH of mixed liquor within the scope of 3-4 to get to sewage treatment composite oxidant.
The mixed proportion of the oxidant A and oxidant B is by volume 1:0.2~3 mixing.
Sewage treatment composite oxidant preparation cost of the invention is low, good to sewage treatment rate height, effect.Using this hair
Bright composite oxidant can further improve reaction efficiency, sewage after processing on the basis of original oxidant, and COD is gone
Except rate significantly improves, reaction efficiency improves 15-20%, can be widely applied in the wastewater treatment in the fields such as pharmacy, printing and dyeing.
Specific embodiment
Embodiment 1
（1）The preparation of oxidant A：The sodium chlorite solution that mass fraction is 10% is prepared, the chlorous acid of 10g 10% is then measured
Sodium solution, the Sodium Polyacrylate and 83g water that 2g molecular weight is 8000, are configured to solution, then utilize 400 g/L sodium hydroxides
Or potassium hydroxide solution, the pH of solution is adjusted within the scope of 12-14 to get oxidant solution A；
（2）The preparation of oxidant B：Prepare the glacial acetic acid aqueous solution that mass fraction is 50%, the hydrogen peroxide that mass fraction is 30 %
Solution, the citric acid that mass fraction is 0.1%, the citric acid for measuring 15g 0.1% are slowly added to the glacial acetic acid aqueous solution of 55g 50%
In, it is configured to solution 1, separately 98% concentrated sulfuric acid of 1g is slowly added in the hydrogenperoxide steam generator of 30 % of 29g, is configured to solution 2,
Then solution 2 is slowly added in solution 1, is stood within the scope of 20-25 DEG C for 24 hours, oxidant B is made；
（3）The preparation of sewage treatment composite oxidant：By volume 1:1 measures oxidant A and oxidant B respectively, by oxidant B
It is slowly added into oxidant A, both makes to mix, control the pH of mixed liquor within the scope of 3-4 to get to sewage treatment composite oxygen
Agent.
Embodiment 2
（1）The preparation of oxidant A：The sodium chlorite solution that mass fraction is 10% is prepared, the chlorous acid of 20g 10% is then measured
Sodium solution, the polymaleic anhydride that 2g molecular weight is 800 and 78g water, are configured to solution, then using 400 g/L sodium hydroxides or
The pH of solution is adjusted within the scope of 12-14 to get oxidant solution A by person's potassium hydroxide solution；
（2）The preparation of oxidant B：Prepare the glacial acetic acid aqueous solution that mass fraction is 50%, the hydrogen peroxide that mass fraction is 30 %
Solution, the phosphoric acid that mass fraction is 0.1%, the phosphoric acid for measuring 10g 0.1% are slowly added in the glacial acetic acid aqueous solution of 65g 50%,
It is configured to solution 1, separately 98% concentrated sulfuric acid of 2g is slowly added in the hydrogenperoxide steam generator of 30 % of 23g, is configured to solution 2, then
Solution 2 is slowly added in solution 1, is stood within the scope of 20-25 DEG C for 24 hours, oxidant B is made；
（3）The preparation of sewage treatment composite oxidant：By volume 1:0.5 measures oxidant A and oxidant B respectively, will aoxidize
Agent B is slowly added into oxidant A, mixes the two, and the pH for controlling mixed liquor is answered within the scope of 3-4 to get to sewage treatment
Close oxidant.
Embodiment 3
（1）The preparation of oxidant A：The sodium chlorite solution that mass fraction is 10% is prepared, the chlorous acid of 15g 10% is then measured
Sodium solution, the polymaleic anhydride that 3g molecular weight is 400 and 82g water, are configured to solution, then using 400 g/L sodium hydroxides or
The pH of solution is adjusted within the scope of 12-14 to get oxidant solution A by person's potassium hydroxide solution；
（2）The preparation of oxidant B：Prepare the glacial acetic acid aqueous solution that mass fraction is 50%, the hydrogen peroxide that mass fraction is 30 %
Solution, mass fraction are 0.05% citric acid and 0.05% phosphoric acid, take 0.05% citric acid and 0.05% phosphoric acid each respectively
5g mixing, is slowly added in the glacial acetic acid aqueous solution of 57g 50%, is configured to solution 1, be separately slowly added to 98% concentrated sulfuric acid of 3g
In the hydrogenperoxide steam generator of 30 % of 30g, it is configured to solution 2, then solution 2 is slowly added in solution 1, in 20-25 DEG C of range
For 24 hours, oxidant B is made in interior standing；
（3）The preparation of sewage treatment composite oxidant：By volume 1:3 measure oxidant A and oxidant B respectively, by oxidant B
It is slowly added into oxidant A, both makes to mix, control the pH of mixed liquor within the scope of 3-4 to get to sewage treatment composite oxygen
Agent.
By sewage treatment composite oxidant made from above-mentioned 3 embodiments, it is used for pharmacy sewage processing, COD
6000-20000mg/L。
Application method：According to VSewage：VOxidant A B=100:The oxidant of preparation is rapidly added handled dirt by 6 ratio
After reacting 5 h in water, the COD of solution is measured.3 embodiment COD removal rates reach 43 %, 32%, 26%, and turbidity removal rate reaches
76 %、63%、55%。
As can be seen that using composite oxidant technique from examples detailed above, sewage water body can be carried out by a relatively large margin net
Change, and composite oxidant can continuingly act on waste water in wastewater treatment whole process, can continue to improve Water quality.It is compound
The process for preparation of oxidant is simple, and composite oxidant is mixed before use by oxidant A and oxidant B, solves oxygen
The problem of agent prepares the reduction of bring anti-oxidant active too early, and oxidation efficiency declines, can further improve sewage treating efficiency.
Claims (5)
1. a kind of sewage treatment composite oxidant, it is characterised in that it is mixed in proportion by oxidant A and oxidant B, wherein
Oxidant A includes the raw material of following mass percent concentration：Mass fraction is 10 % -20 of sodium chlorite solution of 10%-25%
%, oxidation promoter 1 %-3 %, water 75-85%；Oxidant B includes the raw material of following mass percent：The ice that mass fraction is 50%
Aqueous acetic acid 50%- 65%, mass fraction are the 15 %-30 % of hydrogen peroxide of 30 %, 1 % of the concentrated sulfuric acid that mass fraction is 98%
- 3%, Compound-acid 5%-15%.
2. sewage treatment composite oxidant as described in claim 1, it is characterised in that the oxidation promoter is polyacrylic acid
Sodium or hydrolysis of polymaleic anhydride are one of, wherein the relative molecular weight of selected Sodium Polyacrylate is 5000-15000, selected water
Solve polymaleic anhydride molecular weight be 400-800, preferably relative molecular mass be 8000 Sodium Polyacrylate.
3. sewage treatment composite oxidant as described in claim 1, it is characterised in that the Compound-acid be citric acid, phosphoric acid or
One or both of salicylic acid compounds, and the citric acid or phosphoric acid or mass fraction that preferred mass score is 0.1% are
0.05% citric acid and 0.05% phosphoric acid press 1:Compound-acid made of 1 ratio compounding.
4. a kind of preparation method of the sewage treatment composite oxidant as described in claim 1-3, it is characterised in that：Including following
Step：
（1）The preparation of oxidant A：Prepare the sodium chlorite solution and then measure chlorous acid in proportion that mass fraction is 10%-25%
Sodium solution, oxidation promoter and water are configured to solution, then utilize 400 g/L sodium hydroxides or potassium hydroxide solution, will be molten
The pH of liquid is adjusted within the scope of 12-14 to get oxidant solution A；
（2）The preparation of oxidant B：Prepare the glacial acetic acid aqueous solution that mass fraction is 50%, the hydrogen peroxide that mass fraction is 30 %
Compound-acid, is first slowly added in glacial acetic acid aqueous solution in proportion, is configured to solution by solution, the Compound-acid that mass fraction is 0.1%
1, separately 98% concentrated sulfuric acid is slowly added in hydrogenperoxide steam generator, is configured to solution 2, then solution 2 is slowly added in solution 1,
It is stood within the scope of 20-25 DEG C for 24 hours, oxidant B is made；
（3）The preparation of sewage treatment composite oxidant：Oxidant B is slowly added into oxidant A in proportion, keeps the two mixed
It closes, controls the pH of mixed liquor within the scope of 3-4 to get to sewage treatment composite oxidant.
5. the preparation method of the sewage treatment composite oxidant as claimed in claim 4, it is characterised in that oxidant A and oxygen
The mixed proportion of agent B is by volume 1:0.2~3 mixing.
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| CN201810680059.8A CN108862544A (en) | 2018-06-27 | 2018-06-27 | A kind of sewage treatment composite oxidant and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697867A (en) * | 2019-11-13 | 2020-01-17 | 佛山科学技术学院 | Preparation method of high-grade oxidant for sewage treatment |
| CN113318371A (en) * | 2021-06-25 | 2021-08-31 | 安徽浩悦环境科技有限责任公司 | Safe processing method and device for waste sodium chlorite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697867A (en) * | 2019-11-13 | 2020-01-17 | 佛山科学技术学院 | Preparation method of high-grade oxidant for sewage treatment |
| CN113318371A (en) * | 2021-06-25 | 2021-08-31 | 安徽浩悦环境科技有限责任公司 | Safe processing method and device for waste sodium chlorite |
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