CN102942291A - Process for treating dinitrodiazophenol waste water - Google Patents
Process for treating dinitrodiazophenol waste water Download PDFInfo
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- CN102942291A CN102942291A CN2012104720040A CN201210472004A CN102942291A CN 102942291 A CN102942291 A CN 102942291A CN 2012104720040 A CN2012104720040 A CN 2012104720040A CN 201210472004 A CN201210472004 A CN 201210472004A CN 102942291 A CN102942291 A CN 102942291A
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- dinitrodiazophenol
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Abstract
The invention discloses a process for treating dinitrodiazophenol waste water. The process for treating dinitrodiazophenol waste water mainly includes procedures of detonation elimination, alkalization, electrolysis, biochemistry, oxidation, neutralization and separation the like. Firstly, acid dinitrodiazophenol waste water is performed with detonation elimination and mixed with alkali waste water, most nitrophenol compound is precipitated out under the condition with certain acidity, remaining organic matters are totally removed through the electrolysis, biochemistry and oxidative degradation, after neutralization, the waste water can reach the emission standard stipulated by the state, and no secondary pollution is caused to the environment.
Description
Technical field
The invention discloses a kind for the treatment of process of dinitrodiazophenol wastewater, belong to sewage treatment area.
Background technology
Dinitrodiazophenol (DDNP) waste water treatment is a great problem both domestic and external always, its waste water is sorrel, colourity is up to more than 10,000 times, COD (chemical oxygen demand (COD)) is up to 9700mg/L, pH value 12-14, its characteristic body " nitropheneol ", during maximum concentration up to 3500mg/L (in picric acid).
For this waste water, general treatment process includes the modes such as electrolysis treatment of yellow coal adsorption treatment, the processing of steaming method method, sodium-hypochlorite process processing, extra electric field, but the effect of waste water treatment is all unstable.Process the DDNP composite waste with yellow coal absorption method, because yellow coal used in its treatment process is easy to saturatedly, and the yellow coal again can not regeneration, poor processing effect and high cost.With large pan evaporation process alkaline waste water, with sodium hypochlorite oxidization, active carbon adsorption treatment of acidic wastewater (acidity, the alkaline waste water that produce in the DDNP manufacturing processed are processed with diverse ways respectively), the shortcoming of this method mainly is that the consumption of coal of large pan processing alkaline waste water is very large, steam output is very little, and large pan is easy to be corroded, burn ring.The acidic and alkaline waste water that produces in the DDNP manufacturing processed is mixed the adjusting aftertreatment, with the method for externally fed through electrolysis, precipitation, oxidation reinforced dose of this waste water of (clorox) oxide treatment again, although the method treatment effect is better, shortcoming mainly is pole plates usedly very easily to be passivated.
Summary of the invention
For the deficiencies in the prior art, the invention discloses a kind for the treatment of process of dinitrodiazophenol wastewater, its main technique comprises the operations such as quick-fried, the alkalization of disappearing, electrolysis, biochemistry, oxidation, neutralization separation.The quick-fried processing that at first dinitrodiazophenol acid waste water disappeared, and mix with alkaline waste water, under the certain acidity condition, separate out most of nitrophenol compound, by electrolysis, biochemistry, oxidative degradation, wherein remaining organism is removed fully.
The technical solution used in the present invention is: a kind for the treatment of process of dinitrodiazophenol wastewater, it is characterized in that: its step is as follows: (1) disappears quick-fried: at first in situation about stirring, add sodium peroxide solution to pH value and reach 12-13 in dinitrodiazophenol acid waste water;
(2) alkalization: after the quick-fried processing 3 hours of disappearing, acid waste water slowly poured in the alkaline waste water mix, the acidity with nitric acid is regulated composite waste makes pH value reach 2-3, and filtration;
(3) electrolysis: the waste water after step (2) is processed enters electrolyzer, and adding concentration in the pond is the tri-chlorination hydrogen solution of 20-30%, and add-on is by weight: m
Waste water: m
Hydrogen peroxide=100: 2-3, make electrode with graphite, in electrolysis under the direct supply about 10v more than 4 hours;
(4) coagulation: the waste water after step (3) is processed enters coagulation basin, and the lime aqueous solution that adds saturation concentration reaches 7-9 to the pH value, and the coagulation time is 1-2 hour, and filters;
(5) biochemistry: the waste water after step (4) is processed enters biochemistry pool, and then the pH value of regulating waste water with sulfuric acid adds superoxol and the concentration that concentration is 20-30% to 2-3 is the alum liquor of 25-35%, and add-on is by weight: m
Waste water: m
Hydrogen peroxide: m
Ferric sulfate=3-5: 1: 3, oxidization time was 1-15 hour, and filtered;
(6) neutralization: the waste water after step (5) is processed enters neutralization tank, is neutralized to the pH value with sodium hydroxide solution and reaches 7-8, filters.
Technical superiority of the present invention is characterised in that: technical process is scientific and reasonable, and wastewater treatment both can be carried out continuously, can carry out off and on again.Because adopt electrochemistry to be combined a kind of complex art processing method with chemofacies, cost is low, and is effective, can thoroughly eradicate in the waste water nuisance to the pollution and harm of environment.
Specific examples
Example 1: will: acid waste water is sent into the quick-fried pond that disappears, and in situation about stirring, adds sodium hydroxide solution to pH value and reaches 12.5.After the quick-fried processing 3 hours of disappearing, acid waste water is sent into the sewage equalizing tank slowly mix with the alkaline waste water of pouring in advance.When regulating acidity to pH value 2 with sulfuric acid, filter.Waste water after the separation enters electrolyzer, and adding concentration is 30% superoxol in the pond, and add-on is by weight: m
Waste water: m
Hydrogen peroxide=1000: 2.5, make electrode with graphite, in electrolysis under the direct supply about 10v more than 4 hours.Waste water after the electrolysis is sent into coagulation basin, transfer to the pH value with saturated limewater and reach 8, coagulation filtered after 2 hours.Waste water after the filtration flows into oxidation pond, with the pH value to 3 that sulfuric acid is regulated waste water, adds concentration again and be 30% superoxol and concentration and be 30% ferrum sulfuricum oxydatum solutum, and add-on is by weight: m
Waste water: m
Hydrogen peroxide: m
Ferric sulfate=3: abundant oxidation in 1.5: 4 was filtered after 10 hours.Waste water after above-mentioned processing enters neutralization tank, is neutralized to pH value 7 with sodium hydroxide solution, refilters.Its precipitation ironic hydroxide and ferrous hydroxide can be sent to oxidation pond and carry out recycle, and the water body after the processing gets final product qualified discharge.
Example 2: will: acid waste water is sent into the quick-fried pond that disappears, and in situation about stirring, adds sodium hydroxide solution to pH value and reaches 13.After the quick-fried processing 4 hours of disappearing, acid waste water is sent into the sewage equalizing tank slowly mix with the alkaline waste water of pouring in advance.When regulating acidity to pH value 3 with sulfuric acid, filter.Waste water after the separation enters electrolyzer, and adding concentration is 35% superoxol in the pond, and add-on is by weight: m
Waste water: m
Hydrogen peroxide=100: 2, make electrode with graphite, in electrolysis under the direct supply about 10v more than 5 hours.Waste water after the electrolysis is sent into coagulation basin, transfer to the pH value with saturated limewater and reach 9, coagulation filtered after 3 hours.Waste water after the filtration flows into oxidation pond, with the pH value to 4 that sulfuric acid is regulated waste water, adds concentration again and be 50% superoxol and concentration and be 40% ferrum sulfuricum oxydatum solutum, and add-on is by weight: m
Waste water: m
Hydrogen peroxide: m
Ferric sulfate=3: abundant oxidation in 5: 4 was filtered after 12 hours.Waste water after above-mentioned processing enters neutralization tank, is neutralized to pH value 8 with sodium hydroxide solution, refilters.Its precipitation ironic hydroxide and ferrous hydroxide can be sent to oxidation pond and carry out recycle, and the water body after the processing gets final product qualified discharge.
Example 3: will: acid waste water is sent into the quick-fried pond that disappears, and in situation about stirring, adds sodium hydroxide solution to pH value and reaches 14.After the quick-fried processing 4 hours of disappearing, acid waste water is sent into the sewage equalizing tank slowly mix with the alkaline waste water of pouring in advance.Regulate acidity to pH value 3 with sulfuric acid, filter.Waste water after the separation enters electrolyzer, and adding concentration is 40% superoxol in the pond, and add-on is by weight: m
Waste water: m
Hydrogen peroxide=100: 4, make electrode with graphite, in electrolysis under the direct supply about 10v more than 5 hours.Waste water after the electrolysis is sent into coagulation basin, transfer to the pH value with saturated limewater and reach 9, coagulation filtered after 3 hours.Waste water after the filtration flows into oxidation pond, with the pH value to 4 that sulfuric acid is regulated waste water, adds concentration again and be 40% superoxol and concentration and be 50% ferrum sulfuricum oxydatum solutum, and add-on is by weight: m
Waste water: m
Hydrogen peroxide: m
Ferric sulfate=3: abundant oxidation in 5: 6 was filtered after 12 hours.Waste water after above-mentioned processing enters neutralization tank, is neutralized to pH value 8 with sodium hydroxide solution, refilters.Its precipitation ironic hydroxide and ferrous hydroxide can be sent to oxidation pond and carry out recycle, and the water body after the processing gets final product qualified discharge.
Claims (2)
1. the treatment process of a dinitrodiazophenol wastewater is characterized in that: this technique comprises the processes such as quick-fried, the acidifying of disappearing, electrolysis, coagulation, biochemistry, oxidation, neutralization separation.
2. the treatment process of a kind of dinitrodiazophenol wastewater according to claim 1, it is characterized in that: its step is as follows:
(1) disappear quick-fried: at first in situation about stirring, in dinitrodiazophenol acid waste water, add sodium peroxide solution to pH value and reach 12-13;
(2) alkalization: after the quick-fried processing 3 hours of disappearing, acid waste water slowly poured in the alkaline waste water mix, the acidity with nitric acid is regulated composite waste makes pH value reach 2-3, and filtration;
(3) electrolysis: the waste water after step (2) is processed enters electrolyzer, and adding concentration in the pond is the tri-chlorination hydrogen solution of 20-30%, and add-on is by weight: m
Waste water: m
Hydrogen peroxide=100: 2-3, make electrode with graphite, in electrolysis under the direct supply about 10v more than 4 hours;
(4) coagulation: the waste water after step (3) is processed enters coagulation basin, and the lime aqueous solution that adds saturation concentration reaches 7-9 to the pH value, and the coagulation time is 1-2 hour, and filters;
(5) biochemistry: the waste water after step (4) is processed enters biochemistry pool, and then the pH value of regulating waste water with sulfuric acid adds superoxol and the concentration that concentration is 20-30% to 2-3 is the alum liquor of 25-35%, and add-on is by weight: m
Waste water: m
Hydrogen peroxide: m
Ferric sulfate=3-5: 1: 3, oxidization time was 1-15 hour, and filtered;
(6) neutralization: the waste water after step (5) is processed enters neutralization tank, is neutralized to the pH value with sodium hydroxide solution and reaches 7-8, filters.
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| CN2012104720040A CN102942291A (en) | 2012-11-13 | 2012-11-13 | Process for treating dinitrodiazophenol waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673379A (en) * | 2017-03-08 | 2017-05-17 | 广东宏大韶化民爆有限公司 | Novel comprehensive wastewater treatment process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562818A (en) * | 2004-04-01 | 2005-01-12 | 广东省三○九厂 | Method for treating wastewater of dinitrodiazophenol |
| CN101693572A (en) * | 2009-10-28 | 2010-04-14 | 雅化集团绵阳实业有限公司 | Dinitrodiazophenol waste water processing method |
| CN102020382A (en) * | 2009-09-10 | 2011-04-20 | 上饶师范学院 | Treatment method of industrial waste water containing diazodinitrophenol |
| JP2011121858A (en) * | 2009-11-16 | 2011-06-23 | Nippon Koki Co Ltd | Priming powder composition for detonator |
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- 2012-11-13 CN CN2012104720040A patent/CN102942291A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562818A (en) * | 2004-04-01 | 2005-01-12 | 广东省三○九厂 | Method for treating wastewater of dinitrodiazophenol |
| CN102020382A (en) * | 2009-09-10 | 2011-04-20 | 上饶师范学院 | Treatment method of industrial waste water containing diazodinitrophenol |
| CN101693572A (en) * | 2009-10-28 | 2010-04-14 | 雅化集团绵阳实业有限公司 | Dinitrodiazophenol waste water processing method |
| JP2011121858A (en) * | 2009-11-16 | 2011-06-23 | Nippon Koki Co Ltd | Priming powder composition for detonator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673379A (en) * | 2017-03-08 | 2017-05-17 | 广东宏大韶化民爆有限公司 | Novel comprehensive wastewater treatment process |
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Application publication date: 20130227 |