CN101723530B - Treating method of high concentration ammonia nitrogen sewage - Google Patents
Treating method of high concentration ammonia nitrogen sewage Download PDFInfo
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- CN101723530B CN101723530B CN2009102594431A CN200910259443A CN101723530B CN 101723530 B CN101723530 B CN 101723530B CN 2009102594431 A CN2009102594431 A CN 2009102594431A CN 200910259443 A CN200910259443 A CN 200910259443A CN 101723530 B CN101723530 B CN 101723530B
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Abstract
The invention relates to a treating method of high concentration ammonia nitrogen sewage, which comprises the comprehensive utilization of carbide slag. The method aims at taking into account of simple process flows, low investment, mature technology, convenient control and no secondary pollution. The treating method comprises all unit processes of chemical flocculation, chemical oxidation, blowing-off and chemical neutralization; and after the high concentration ammonia nitrogen sewage is treated, the NH3-N can be reduced to be less than 40mg/l.
Description
Technical field
The present invention relates to a kind of treatment process of high concentration ammonia nitrogen sewage, comprise Comprehensive Utilization for Carbide Slag.
Technical background
Excessive ammonia nitrogen enters water body will cause body eutrophication, and the nitrate of oxidized generation and nitrite also can influence hydrobiont even human health.Therefore, sewage water denitrification is handled and is subjected to human extensive concern.Nitrifying sludge dehydration liquid, refuse leachate, catalyst manufacturer sewage, meat processing sewage, synthetic ammonia sewage, coked waste water, oil refining sewerage, chemical engineering sewage etc. contain the ammonia nitrogen of high concentration.
The treatment process of high concentration ammonia nitrogen sewage is divided into physico-chemical process, biochemical process both at home and abroad at present
(1) physico-chemical process has: blow-off method, break point chlorination, zeolite deamination method, membrane separation technique, chemical oxidization method, MAP settling process, gas formulation etc.
(2) biological process has: A/O method, short distance nitre China denitrification, Anammox and omnidistance from oxygen denitrogenation, aerobic denitrification etc.
Have multiplely though handle the method for high concentration ammonia nitrogen sewage, also do not have a kind ofly can to take into account that technical process is simple at present, reduced investment, technology maturation, control makes things convenient for and the treatment process of non-secondary pollution.
Summary of the invention
Purpose of the present invention be exactly realize taking into account that technical process is simple, reduced investment, technology maturation, control is convenient and the treatment process of non-secondary pollution.The present invention includes chemical flocculation, chemical oxidation, stripping, each unit process of chemistry neutralization.
(1), the chemical flocculation process is: with carbide slag the pH value of high concentration ammonia nitrogen sewage is transferred to greater than 11 earlier, adding aluminium iron polychloride or polyaluminium sulfate ferric flocculant then stirs after 30-60 minute (pH value is greater than 10), add PAM again and stir after 3-10 minute, leave standstill more than 2 hours.Adding carbide slag transfers pH value to make the nitrogen in the sewage be converted into free state NH3 by NH4+ greater than 11; Adding flocculation agent makes that nonvolatile pollutent flocculates in the sewage, precipitates under the effect of flocculation agent.
(2), chemical oxidation, stripping process are: after the desliming, add H2O2 (is catalyzer with MnO2) and stirred 30-60 minute, aeration 1-3 hour, add NaOH and H2O2 again and stirred 30-60 minute, aeration 1-3 hour, leave standstill (the aeration temperature must not be lower than 20 ℃) more than 2 hours.Add H2O2 (is catalyzer with MnO2) and make organic pollutant oxidation, decomposition in the sewage, add NaOH and H2O2 again and make further oxidation of organic pollutant, decomposition in the sewage; Aeration falls the volatile component stripping in the sewage.
(3), chemical N-process is: after the desliming, the sulfuric acid accent pH value that restir adds 20%-40% is 6-9, leaves standstill.
(4), sludge press filtration dehydration, drainage returns retort, the filter residue otherwise processed.
Embodiment
(1), with NH3-N is the catalyst manufacturer sewage injection retort of 5800mg/l, adding carbide slag earlier is transferred to the pH value of sewage greater than 11, add the polyaluminium sulfate ferric flocculant then and stir after 40 minutes (pH value is greater than 10), add PAM again and stir after 5 minutes, left standstill 2 hours.
(2), after the desliming, add H2O2 (is catalyzer with MnO2) and stirred 30 minutes, aeration 2 hours adds NaOH and H2O2 again and stirred 30 minutes, and aeration 2 hours leaves standstill 2 hours (the aeration temperature must not be lower than 20 ℃).
(3), after the desliming, restir adds 30% sulfuric acid, and to transfer pH value be 7, left standstill 30 minutes, supernatant liquor NH3-N is 30mg/l.
(4), sludge press filtration dehydration, drainage returns retort, the filter residue otherwise processed.
Claims (1)
1. the treatment process of a high concentration ammonia nitrogen sewage, it is characterized in that comprising chemical flocculation: with carbide slag the pH value of high concentration ammonia nitrogen sewage is transferred to greater than 11 earlier, add aluminium iron polychloride or polyaluminium sulfate ferric flocculant then and stir after 30-60 minute the pH value greater than 10, adding PAM again stirred after 3-10 minute, leave standstill more than 2 hours: chemical oxidation, stripping: after the desliming, add H
2O
2With MnO
2Be catalyzer, stirred 30-60 minute, aeration 1-3 hour, add NaOH and H again
2O
2Stirred 30-60 minute, and aeration 1-3 hour, left standstill that the aeration temperature must not be lower than 20 ℃ more than 2 hours; The chemistry neutralization: after the desliming, the sulfuric acid pH value that restir adds 20%-40% leaves standstill each unit process for 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102594431A CN101723530B (en) | 2009-12-22 | 2009-12-22 | Treating method of high concentration ammonia nitrogen sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102594431A CN101723530B (en) | 2009-12-22 | 2009-12-22 | Treating method of high concentration ammonia nitrogen sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101723530A CN101723530A (en) | 2010-06-09 |
| CN101723530B true CN101723530B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102594431A Active CN101723530B (en) | 2009-12-22 | 2009-12-22 | Treating method of high concentration ammonia nitrogen sewage |
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| CN (1) | CN101723530B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913663B (en) * | 2010-08-12 | 2012-06-13 | 江苏华杉环保科技有限公司 | Method for simultaneously treating high ammonia-nitrogen wastewater and carbide slag |
| CN102775014A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Method for treating high-concentration ammonia nitrogen in pesticide wastewater |
| PT106979A (en) * | 2013-05-31 | 2014-12-02 | Adventech Advanced Environmental Technologies Lda | SYSTEM AND METHOD FOR TREATMENT OF EFFLUENTS |
| CN106315795A (en) * | 2015-07-06 | 2017-01-11 | 迪建东 | Inorganic flocculating agent for coking waste water |
| CN106007087B (en) * | 2016-07-06 | 2018-10-16 | 扬州奇创环保科技有限公司 | A kind of high-concentration ammonia nitrogenous wastewater treatment process and ammonia recovery system |
| CN110835154A (en) * | 2019-12-16 | 2020-02-25 | 天合光能股份有限公司 | Ammonia water and hydrogen peroxide wastewater treatment device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073666A (en) * | 1991-12-27 | 1993-06-30 | 陈利 | High-effective treating process of glue wastewater |
| CN101045593A (en) * | 2007-04-26 | 2007-10-03 | 陈启松 | Zero discharge treatment method for coking wast water and its device |
| CN101139145A (en) * | 2007-08-17 | 2008-03-12 | 彭吉成 | Sullage oxidized coagulated decolorizing process technique |
-
2009
- 2009-12-22 CN CN2009102594431A patent/CN101723530B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073666A (en) * | 1991-12-27 | 1993-06-30 | 陈利 | High-effective treating process of glue wastewater |
| CN101045593A (en) * | 2007-04-26 | 2007-10-03 | 陈启松 | Zero discharge treatment method for coking wast water and its device |
| CN101139145A (en) * | 2007-08-17 | 2008-03-12 | 彭吉成 | Sullage oxidized coagulated decolorizing process technique |
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| CN101723530A (en) | 2010-06-09 |
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