CN1562818A - Method for treating wastewater of dinitrodiazophenol - Google Patents
Method for treating wastewater of dinitrodiazophenol Download PDFInfo
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- CN1562818A CN1562818A CN 200410026751 CN200410026751A CN1562818A CN 1562818 A CN1562818 A CN 1562818A CN 200410026751 CN200410026751 CN 200410026751 CN 200410026751 A CN200410026751 A CN 200410026751A CN 1562818 A CN1562818 A CN 1562818A
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- waste water
- dinitrodiazophenol
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- processing method
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Abstract
The method includes microelectrolysis, electrofilter, filter, oxidized coagulating and refilter, filings in microelectrolysis tank are scurf and carbon powder, the ratio of them is 5-9:4-1, H2O2 that density is 20-40 percent and FeSO4 that density is 20-50 percent are added in during oxidizing coagulating process in the meantime, filtered liquid is direct discharged after being filtered and fully oxidized and coagulated. The waste water processed by this invention can reach national effluent standard, COD dislodging ratio is 98.2 percent, BOD5 dislodging ratio is 98.2 percent, chroma, nitrophenol and sulfide dislodging ratio are all approach 100 percent.
Description
Technical field
The present invention relates to a kind of processing method of industrial waste water, particularly relate to a kind of dinitrodiazophenol waste water processing method.
Background technology
Dinitrodiazophenol, formal name used at school are 4, and 6-dinitrobenzene-2-diazonium phenol is called for short DDNP, as dyestuff, finds afterwards that it had the good performance of detonating at first, so its medicament as priming explosive is used for industrial detonator, have the history of decades so far.Because DDNP is a kind of organic compound that does not contain heavy metal, power with high explosive have good detonate performance and good chemical stability again simultaneously, and raw material sources is extensive, production technique is simple, therefore for a long time, stably is applied to the priming system industry.But in the production process of DDNP, but produce a large amount of waste water, this waste water dyeability is strong, colourity is up to more than 1000 times, and contain a large amount of multiple harmful substances, as nitro-compound, Sulfothiorine, sodium sulphite, yellow soda ash, hydrochloric acid etc., wastewater flow rate is big simultaneously, and 1 kilogram of DDNP of every production produces 250-350 kilogram waste water approximately.
The DDNP wastewater treatment method mainly contains following several at present:
(1) absorption method: it is to utilize the surface of porous materials such as activated carbon, sulphonated coal to adsorb impurity that absorption method is handled waste water, solute molecule is under the effect in the adsorbent surface field of force in the waste water, from solution, transfer to the surface of sorbent material, thereby reduced the content of toxic substance in the waste water, reduced the colourity of waste water, its shortcoming is that the sorbent material consumption is big, handles the working cost costliness, objectionable impurities is removed not thorough, and waste residue is many.
(2) electrolytic process: electrolytic process is the cathodic area that earlier waste water is placed on electrolyzer, make nitro-compound be reduced into aminocompound, and then carry out oxidation, make it resolve into simple and stable inorganic salt through the positive column, the shortcoming of this method is that current consumption is big, is unsuitable for scale operation.
(3) biochemical process: it is the biological oxidation of making good use of aerobic microorganism that biochemical process is handled waste water, and organic substance in the waste water and objectionable impurities are resolved into nontoxic simple material, and microorganism utilizes these simple materials as nutriment again, makes oneself existence and breeding.The key of this law is to cultivate active sludge, grasp condition and mechanics that microorganism survives, breeds in waste water, but, be difficult to grasp condition and the mechanics that microorganism survives, breeds in waste water, so that can't promote because the cultivation of active sludge is subjected to environment and condition effect very big.
(4) comprehensive use of waste water: as make boiler feed water, making dyestuff, recovery Sulfothiorine or sodium sulphite etc.Contain sulfide in the water purification that is produced when making boiler feed water, do not reach discharging standards, waste water produces corrosion to boiler simultaneously; Then complex process, investment are difficult to promote aborning greatly to make dyestuff.
(5) other, as reverse osmosis method etc.Adopt reverse osmosis method, reverse osmosis unit needs frequent start-stop, and the reverse osmosis membrane replacement cost is too high.
Summary of the invention
The objective of the invention is the problems referred to above of existing at prior art, provide that a kind of cost is low, effective, the dinitrodiazophenol waste water processing method for the treatment of processes serialization.
The objective of the invention is to be achieved through the following technical solutions:
A kind of dinitrodiazophenol waste water processing method comprises the steps:
(1) pH value of adjusting waste water makes pH value reach 3-5;
(2) waste water behind the adjusting pH value carries out little electrolysis treatment in little electrolyzer, be filled with the obturator that mixes of iron filings and carbon granule in little electrolyzer, the weight ratio of described iron filings and carbon granule is 5-9: 4-1, and the iron filings particle diameter is 1-3mm, and the residence time of waste water in little electrolyzer is 0.5-2 hour;
(3) waste water after step (2) is handled enters the processing of electrofiltration machine, and the residence time of waste water in the electrofiltration machine is 0.5-2 hour;
(4) waste water after step (3) is handled filters;
(5) waste water after step (4) is handled enters oxidized coagulated groove, and adding concentration in the groove is the H of 20-40%
2O
2With concentration be the FeSO of 20-50%
4Solution, add-on are by weight: waste water: H
2O
2: FeSO
4Solution=1000: 1-15: 1-10, the oxidized coagulated time is 2-10 hour;
(6) will be adjusted to 6-9 through the pH value of step (5) processed waste water, filter.
Microelectrolysis process described in this treatment process comprises the little electrolysis of two-stage, and iron filings and carbon granule weight ratio suitable in little electrolyzer are that 6-8: 3-2, iron filings particle diameter are 1-2mm, and waste water suitable residence time in little electrolysis is 1-1.5 hour; Waste water suitable residence time in the electrofiltration machine is 1.5-2 hour; Add H in the described oxidized coagulated process
2O
2And FeSO
4The concentration that solution is suitable is respectively 25-30% and 30-40%, and appropriate add-on is by weight: waste water: H
2O
2: FeSO
4Solution=1000: 5-10: 2-5, the suitable oxidized coagulated time is 4-8 hour.
Ultimate principle of the present invention is: the waste water of (1) slant acidity is in little electrolyzer, with iron make anode, carbon is made negative electrode and form numerous microbattery generation micro-electrolysis reaction in water, the nascent oxygen that reaction produces has extremely strong oxidisability, part inorganics and organism in the oxidable water; Produced simultaneously nascent hydrogen has very strong reductive action, and some material in the sewage is reduced; In addition, because organism participates in the reduction reaction of negative electrode, make functional group that variation take place, changed former organic properties, thereby colourity is reduced, make the original organism that is difficult for biochemistry become degradable material, the dissolved positively charged ion forms hydroxo complex in the water, in sewage, play coagulation, assist in removing suspended matter and colloidal impurity in the waste water.(2) in the electrofiltration process, pollutants in sewage outside under the effect of electric field respectively in anode and negative electrode generation redox reaction, be converted into that harmless composition is separated goes out; Simultaneously under effect of electric field, colloidal particle in the waste water and small dispersive pollutent are subjected to electric field action, produce electrophoresis, move to the electrode of opposite charges, and accumulate in and make clarification of water on the electrode; In addition, because gelling and air supporting effect are floated the part contaminate particulate of colloid absorption, realize solid-liquid separation; (3) in the oxidized coagulated process, the sewage after the electrofiltration machine is handled is at H
2O
2And FeSO
4Effect under, wherein organic dirt decomposes or the carbochain fission, reduces the COD in the waste water greatly
CrAnd BOD
5, the muriate in the waste water, sulfide, thiosulfate ion, hydroxide ion precipitation are removed from waste water in addition.
Dinitrodiazophenol waste water processing method of the present invention, technology is simple, and wastewater treatment can be carried out continuously, owing to adopted unique electrofiltration to handle, has both reduced processing cost, and objectionable impurities is removed fully.Adopt method of wastewater treatment of the present invention, average every capsular technology running cost is 0.002-0.004 unit, and the COD clearance reaches 98.2%, BOD
5Clearance reaches 98.2%, and chroma removal rate, nitropheneol clearance, sulfide clearance are all near 100%, to the environment non-secondary pollution.
Description of drawings
Fig. 1 is the schematic flow sheet of method of wastewater treatment of the present invention.
Among the figure: 1-sewage equalizing tank, the little electrolyzer of 2-, 3-electrofiltration machine, 4-clean water basin, 5-acid storage, 6-dioxygen tank, 7-ferrous sulfate liquid bath, 8-lye vat, 9-pressure filter, 10-air compressor machine, 11-sump pump, the oxidized coagulated groove of 12-
Embodiment
The acid waste water and the alkaline waste water that produce in the dinitrodiazophenol production process are sent into sewage equalizing tank 1, regulate pH value to 3-5, send into the little electrolyzer 2 of the first step by sump pump 11 again, bubbling air in the electrolyzer, waste water stops after 1.5 hours in first step electrolyzer 2, enter the little electrolyzer 2 in the second stage again, in second stage electrolyzer 2, stopped 1 hour, be filled with iron filings and carbon granule respectively in the little electrolyzer 2 of the little electrolyzer 1 of the first step and the second stage, iron carbon weight ratio is 7: 3, and the iron filings particle diameter is 1-3mm; Waste water after little electrolyzer 2 is handled flows into electrofiltration machine 3, and the residence time of waste water in electrofiltration machine 3 is 2 hours, and used electrofiltration machine 3 is provided by east, Guangzhou environmental protection equipment factory; Waste water after electrofiltration machine 3 is handled filters with pressure filter 9, carries out solid-liquid separation, and the waste water of the dried slag that is removed flows into oxidized coagulated groove 12, and adding concentration is 30% H in the groove
2O
2With concentration be 40% FeSO
4Solution, add-on are by weight: waste water: H
2O
2: FeSO
4Solution=1000: 8: 3 fully after oxidized coagulated 8 hours, is regulated pH value to 6-9, filters with pressure filter 9, and the gained clear water directly discharges.
Table 1 is the detected result of processed waste water.Detected result is provided by national industrial explosive material quality supervision and test center, examination criteria is carried out State Standard of the People's Republic of China's " weapon industry pollution discharge standard-firer's medicament GB14470.2-2002 ", and test item is whole control projects of the dinitrodiazophenol of this prescribed by standard.
Table 1
Interventions Requested standard-required waste water former state detected result
PH value 6-9 9.5 7.2
COD(mg/l) ≤250 9030 161
BOD
5(mg/l) ≤180 2736.4 49.0
Colourity (extension rate)≤180 100,000 0
Nitropheneol (mg/l)≤6.0 3786.5 0.1
Sulfide (mg/l)≤2.0 6.0 does not detect
Can find out that from table 1 adopt the waste water after the inventive method is handled, each test item reaches the requirement of relative national standards fully, its COD clearance reaches 98.2%, BOD
5Clearance reaches 98.2%, and chroma removal rate, nitropheneol clearance, sulfide clearance are all near 100%.
Adopt the inventive method to handle dinitrodiazophenol wastewater, reagent cost is about 30-60 unit/ton, technology running cost is divided and is about 0.002-0.004 unit (calculating by every detonator filling DDNP0.38g) on every detonator, and domestic at present dinitrodiazophenol wastewater the processing reaches the technology running cost that discharging standards requires and is about every detonator 0.01-0.04 unit, this shows that the cost of treatment process of the present invention also reduces greatly.
Claims (5)
1, a kind of dinitrodiazophenol waste water processing method is characterized in that may further comprise the steps:
(1) pH value of adjusting waste water makes pH value reach 3-5;
(2) waste water behind the adjusting pH value carries out little electrolysis treatment in little electrolyzer, be filled with the obturator that mixes of iron filings and carbon granule in little electrolyzer, the weight ratio of described iron filings and carbon granule is 5-9: 4-1, and the iron filings particle diameter is 1-3mm, and the residence time of waste water in little electrolyzer is 0.5-2 hour;
(3) waste water after step (2) is handled enters the processing of electrofiltration machine, and the residence time of waste water in the electrofiltration machine is 0.5-2 hour;
(4) waste water after step (3) is handled filters;
(5) waste water after step (4) is handled enters oxidized coagulated groove, and adding concentration in the groove is the H of 20-40%
2O
2With concentration be the FeSO of 20-50%
4Solution, add-on are by weight: waste water: H
2O
2: FeSO
4Solution=1000: 1-15: 1-10, the oxidized coagulated time is 2-10 hour;
(6) will be adjusted to 6-9 through the pH value of step (5) processed waste water, filter.
2, dinitrodiazophenol waste water processing method according to claim 1 is characterized in that described little electrolysis comprises the little electrolysis of two-stage.
3, dinitrodiazophenol waste water processing method according to claim 1 and 2, it is characterized in that described iron filings and carbon granule weight ratio are: 6-8: 3-2, iron filings particle diameter are 1-2mm, and the residence time of waste water in little electrolysis is 1-1.5 hour.
4, dinitrodiazophenol waste water processing method according to claim 1 and 2 is characterized in that the time that described waste water stops is 1.5-2 hour in the electrofiltration machine.
5, dinitrodiazophenol waste water processing method according to claim 1 and 2 is characterized in that adding H in the described oxidized coagulated process
2O
2And FeSO
4The concentration of solution is respectively 25-30% and 30-40%, and add-on is by weight: waste water: H
2O
2: FeSO
4Solution=1000: 5-10: 2-5, the oxidized coagulated time is 4-8 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026751 CN1241847C (en) | 2004-04-01 | 2004-04-01 | Method for treating wastewater of dinitrodiazophenol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026751 CN1241847C (en) | 2004-04-01 | 2004-04-01 | Method for treating wastewater of dinitrodiazophenol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1562818A true CN1562818A (en) | 2005-01-12 |
| CN1241847C CN1241847C (en) | 2006-02-15 |
Family
ID=34480728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410026751 Expired - Fee Related CN1241847C (en) | 2004-04-01 | 2004-04-01 | Method for treating wastewater of dinitrodiazophenol |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250015B (en) * | 2008-03-20 | 2010-06-09 | 佛山市威力清水处理有限公司 | Method and device for processing ceramic phenolic waste water |
| CN102942291A (en) * | 2012-11-13 | 2013-02-27 | 常州大学 | Process for treating dinitrodiazophenol waste water |
| CN102976514A (en) * | 2012-11-26 | 2013-03-20 | 常州大学 | Reduction mother solution treatment method in production process of dinitrodiazophenol |
| CN102976529A (en) * | 2012-11-26 | 2013-03-20 | 常州大学 | Reducing mother liquid processing method in dinitrodiazophenol production process |
| CN102992542A (en) * | 2012-11-26 | 2013-03-27 | 常州大学 | Method for treating heavy-nitrogen mother solution generated from production of dinitrodiazophenol |
| CN103011469A (en) * | 2011-09-23 | 2013-04-03 | 贵州活性源生态有限公司 | Technology for treating initiating explosive material production waste water |
| CN103011496A (en) * | 2012-11-26 | 2013-04-03 | 常州大学 | Pre-treating method of diazonium mother solution in production process of dinitrodiazophenol |
| CN101962241B (en) * | 2009-07-24 | 2013-10-16 | 上海轻工业研究所有限公司 | COD treatment process of electroplating waste water |
| CN109553164A (en) * | 2019-01-29 | 2019-04-02 | 四川省宜宾威力化工有限责任公司 | The processing method of iron-copper bi-metal particle, preparation method and dinitrodiazophenol wastewater |
-
2004
- 2004-04-01 CN CN 200410026751 patent/CN1241847C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250015B (en) * | 2008-03-20 | 2010-06-09 | 佛山市威力清水处理有限公司 | Method and device for processing ceramic phenolic waste water |
| CN101962241B (en) * | 2009-07-24 | 2013-10-16 | 上海轻工业研究所有限公司 | COD treatment process of electroplating waste water |
| CN103011469A (en) * | 2011-09-23 | 2013-04-03 | 贵州活性源生态有限公司 | Technology for treating initiating explosive material production waste water |
| CN103011469B (en) * | 2011-09-23 | 2014-07-16 | 贵州活性源生态有限公司 | Technology for treating initiating explosive material production waste water |
| CN102942291A (en) * | 2012-11-13 | 2013-02-27 | 常州大学 | Process for treating dinitrodiazophenol waste water |
| CN102976514A (en) * | 2012-11-26 | 2013-03-20 | 常州大学 | Reduction mother solution treatment method in production process of dinitrodiazophenol |
| CN102976529A (en) * | 2012-11-26 | 2013-03-20 | 常州大学 | Reducing mother liquid processing method in dinitrodiazophenol production process |
| CN102992542A (en) * | 2012-11-26 | 2013-03-27 | 常州大学 | Method for treating heavy-nitrogen mother solution generated from production of dinitrodiazophenol |
| CN103011496A (en) * | 2012-11-26 | 2013-04-03 | 常州大学 | Pre-treating method of diazonium mother solution in production process of dinitrodiazophenol |
| CN109553164A (en) * | 2019-01-29 | 2019-04-02 | 四川省宜宾威力化工有限责任公司 | The processing method of iron-copper bi-metal particle, preparation method and dinitrodiazophenol wastewater |
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| Publication number | Publication date |
|---|---|
| CN1241847C (en) | 2006-02-15 |
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