CN103979703A - Ammonia recovery system - Google Patents
Ammonia recovery system Download PDFInfo
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- CN103979703A CN103979703A CN201310050059.7A CN201310050059A CN103979703A CN 103979703 A CN103979703 A CN 103979703A CN 201310050059 A CN201310050059 A CN 201310050059A CN 103979703 A CN103979703 A CN 103979703A
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- Prior art keywords
- ammonia
- recovery system
- absorber
- dialysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses an ammonia recovery system which at least comprises an ammonia-containing dialysis module, a reaction tank and a first ammonia absorber. The ammonia dialysis module uses a dialysis membrane to dialyze raw water catalyzed by a first catalyst, and the dialyzed raw water reacts with sulfuric acid to obtain ammonium sulfate. The reaction tank is communicated with the ammonia dialysis module, and the ammonium sulfate is transformed into ammonia by a second catalyst. The first ammonia absorber is communicated with the reaction tank, the first ammonia absorber uses cools the first ammonia absorber to a predetermined temperature by a first heat exchanger, and the first ammonia absorber sprays pure water to dissolve the ammonia in the pure water, so that the ammonia is transformed into ammonia water.
Description
Technical field
The invention relates to a kind of ammonia recovery system, it is to utilize dialysis and add catalyzer to make ammonia effectively depart from former water and convert ammoniacal liquor to reclaim.
Background technology
Ammonia-containing water is extensively present in daily life and industry-by-industry, and in recent years, along with the attention to organic contaminations such as nitrogen, phosphorus, the denitride technology of various ammonia-containing waters just becomes considerable problem.
Nitrite is that ammonia is converted into the intermediate product in nitrate process, and the hydrocoles such as fishes and shrimps are had to certain toxicity.If ammonia-containing water is disposed in pond or rivers and creeks, just the higher phenomenon of nitrite content is quite serious, and then causes the sudden death of fishes and shrimps, thereby cause the financial loss that culturist is serious.Even if do not reach lethal concentration, but due to the restrain oneself degree of nitrite content over fishes and shrimps, cause fishes and shrimps physiological function disorderly, thereby affect the generation of growing or causing Other diseases.
Yet the method for ammonia nitrogen is if break point chlorination is because working cost is high in known removal waste water, and by product chloramines and chlorination organism more can cause secondary environmental pollution, is therefore only applicable to process Low Concentration Ammonia Containing Wastewater.In addition, known air stripping method and biological rule distinctly have the water temperature shortcomings such as low and ground, the station area of stripping efficiency is large when low, therefore all cannot remove efficiently the ammonia nitrogen in waste water.
Summary of the invention
Because the problem of above-mentioned known technology, one of them object of the present invention is to provide a kind of ammonia recovery system, and it is to make ammonia (fixed ammonia by dialysis and interpolation catalyzer; Fixed ammonia) effectively depart from former water and become ammonia (free ammonia; And change into ammoniacal liquor and reclaim free ammonia).
Edge is, the present invention proposes a kind of ammonia recovery system, and this ammonia recovery system at least comprises ammonia dialysis module, reactive tank and the first ammonia absorber.Wherein, ammonia dialysis module comprises at least one dialyzer, with by dialyzer dialysis by the former water after the first catalyst, make former water after dialysis with sulfuric acid reaction and must ammonium sulfate.Reactive tank is to be communicated with ammonia dialysis module and by the second catalyzer, to take that to transform ammonium sulfate be ammonia.The first ammonia absorber is to be communicated with reactive tank, the first ammonia absorber by the first heat exchanger with cooling the first ammonia absorber to preset temperature, and by spraying pure water, ammonia is dissolved in pure water to change into ammoniacal liquor.Wherein, dialyzer is permeability type dialyzer, and the first catalyzer is calcium oxide or sodium hydroxide, and the second catalyzer is calcium oxide or sodium hydroxide.In addition, ammonia recovery system of the present invention more comprises storage tanks and is communicated with the first ammonia absorber.Wherein, storage tanks stores ammoniacal liquor, and makes the temperature of ammoniacal liquor maintain preset temperature by the first heat exchanger.
In addition, ammonia recovery system of the present invention more comprises the recycle system that is communicated with reactive tank by liquid feed valve and liquid-outlet valve, and this recycle system be by pump after liquid feed valve draws the ammonium sulfate reactive tank, then via liquid-outlet valve, ammonium sulfate is imported in reactive tank to the speed of reaction that is converted into ammonia to improve ammonium sulfate.
Continuous speech, ammonia recovery system of the present invention more comprises one second ammonia absorber and is communicated to reactive tank and the first ammonia absorber, and wherein the second ammonia absorber is by spraying pure water, ammonia to be dissolved in pure water to change into ammoniacal liquor.Wherein, the second ammonia absorber is with the ammoniacal liquor in cooling the second ammonia absorber by the first heat exchanger.
In addition, ammonia recovery system of the present invention more comprises loop module and is communicated with ammonia dialysis module and Yuan Shui, makes to be recycled in former water via loop module without the former water of dialysis.
From the above, according to ammonia recovery system of the present invention, it can have one or more following advantages:
(1) ammonia recovery system of the present invention, by dialysis and the mode of adding catalyzer, can change into free ammonia by the fixed ammonia in former water effectively, and then makes free ammonia change into ammoniacal liquor to reclaim by spraying pure water.
(2) ammonia recovery system of the present invention, is communicated with reactive tank by the recycle system and to improve ammonium sulfate, is converted into the speed of reaction of ammonia.
(3), in ammonia recovery system of the present invention, the reacted resultant of calcium oxide and fixed ammonia more can be used as cement adding thing and can not cause secondary environmental pollution.
For the effect that allows technical characterictic of the present invention and reach can become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is the block schematic diagram of the first embodiment of ammonia recovery system of the present invention.
Fig. 2 is the block schematic diagram of the second embodiment of ammonia recovery system of the present invention.
Nomenclature:
10 former tanks
20 ammonia dialysis modules
30 reactive tanks
40 first ammonia absorbers
50 first heat exchangers
60 storage tankss
70 loop modules
80 recycle systems
90 second ammonia absorbers
41,91 pure water
21 first catalyzer
31 second catalyzer
L1 ~ L4 liquid line
A1 ~ A2 gas piping
Embodiment
Hereinafter with reference to correlative type, the embodiment according to ammonia recovery system of the present invention is described, for making to be convenient to understand, the same components in following embodiment is to illustrate with identical symbology.
Refer to Fig. 1, the block schematic diagram of the first embodiment that Fig. 1 is ammonia recovery system of the present invention.High-effect ammonia recovery system of the present invention is applicable to reclaim the former water that contains ammonia.This high-effect ammonia recovery system at least comprises ammonia dialysis module 20, reactive tank 30 and the first ammonia absorber 40.As shown in Figure 1, ammonia dialysis module 20 can be communicated with by the liquid line L1 of vacuum former tank 10, and adds the first catalyzer 21 in ammonia dialysis module 20, make former water after the first catalyzer 21 catalysis and sulfuric acid reaction and ammonium sulfate.Wherein, ammonia dialysis module 20 comprises at least one dialyzer (not illustrating in Fig. 1), uses and makes former water pass through dialyzer through the free ammonia of the first catalyzer 21 catalysis gained, reaches the object of separated free ammonia and former water.Wherein, the first catalyzer can be for example calcium oxide or sodium hydroxide, and dialyzer can be for example permeability type dialyzer.Wherein, the ventilative bore hole size of permeability type dialyzer can be for example 5 μ m to 20 μ m, or the air penetrability of permeability type dialyzer can be for example between 0 to 25%).Yet in ammonia dialysis module 20 of the present invention, dialyzer is not limited to above-mentioned dialyzer of giving an example and size thereof, air penetrability equal-specification, any dialysis assembly that can effectively reach separated free ammonia and former water object, is all the claimed scope of the present invention.
Please continue and consult Fig. 1, reactive tank 30 can be communicated to by the liquid line L2 of vacuum ammonia dialysis module 20, and the ammonium sulfate in ammonia dialysis module 20 is flowed in reactive tank 30 via liquid line L2.In reactive tank 30, by adding the second catalyzer 31, make ammonium sulfate be converted into ammonia.Wherein, the second catalyzer 31 can be for example calcium oxide or sodium hydroxide, but is not limited to this.Then, ammonia flows to the first ammonia absorber 40 via gas piping A2 again, the first ammonia absorber 40 and by the first heat exchanger 50 with cooling the first ammonia absorber 40 to preset temperature, and by spraying pure water 41, ammonia being dissolved in pure water to change into ammoniacal liquor, ammoniacal liquor flow in storage tanks 60 via liquid line L3 again.Wherein the free ammonia assimilated efficiency in the first ammonia absorber 40 can be for example between 26% to 32%.In addition, as shown in Figure 1, more can be by the first heat exchanger 50 to maintain ammoniacal liquor in storage tanks 60 in above-mentioned preset temperature, the optimum efficiency reclaiming to reach ammoniacal liquor.Wherein, the first heat exchanger 50 can be for example reaches cooling the first ammonia absorber 40 or maintains storage tanks 60 in the object of preset temperature in the mode of electric energy or sun power, and the temperature range of this preset temperature can be for example between 0 ℃ to 10 ℃.
In addition, as shown in Figure 1, ammonia recovery system of the present invention more can comprise by gas piping A1 and is communicated to reactive tank 30 and by gas piping A2, is communicated to the second ammonia absorber 90 of the first ammonia absorber 40.The second ammonia absorber 90 can be dissolved in pure water to change into ammoniacal liquor ammonia by spraying pure water 91.And as the operating mode of the first ammonia absorber 40, the second ammonia absorber 90 can be by the first heat exchanger 50 with the temperature of cooling the second ammonia absorber 90, make ammonia in the second ammonia absorber 90 more easily with pure water 91 formation ammoniacal liquor.The ammoniacal liquor forming via the first ammonia absorber 90 can be stored in storage tanks 60 by liquid line L4, and the ammonia that is not dissolved in pure water 91 can flow to the first ammonia absorber 40 via gas piping A2 again, and to continue, above-mentioned ammonia is dissolved in the step in pure water 41.Wherein, the free ammonia assimilated efficiency in the second ammonia absorber 90 can be for example between 26% to 32%.
The vacuum ranges of aforesaid liquid pipeline L1, L2, L3, L4 or gas piping A1, A2 can be for example between 500 holder ear to 760 holder ears, but are not limited to this.In ammonia recovery system of the present invention, can a vacuum pump (for asking drawing succinct, not illustrating in Fig. 1) be set in storage tanks 60, but be not limited to.By the gas in vacuum pump extracting liquid pipeline L1, L2, L3, L4 and gas piping A1, A2, the flow rate that makes liquid or gas sequentially circulate in liquid line L1, L2, gas piping A1, A2 and liquid line L3, L4 is accelerated, and then increases the organic efficiency of ammonia recovery system of the present invention.
In addition, as shown in Figure 1, ammonia recovery system of the present invention more can comprise the loop module 70 that is communicated with ammonia dialysis module 20 and former tank 10, make can be recycled in former tank 10 via loop module 70 without the former water of ammonia dialysis module 20 dialysis, and the ammonia dialyzer group 20 of can again flowing through is to carry out dialyzing, reaches the object of the ammonia in the former water of efficient recovery.
Refer to Fig. 2, the block schematic diagram of the second embodiment that Fig. 2 is ammonia recovery system of the present invention.The second embodiment is only that with the different part of the first embodiment the second embodiment more comprises the recycle system 80 that is communicated with reactive tank 30, therefore in following embodiment, only for the recycle system 80, describes.
As shown in Figure 2, ammonia recovery system of the present invention more comprises the recycle system 80, and the recycle system 80 comprises liquid feed valve and liquid-outlet valve (not illustrating).The recycle system 80 be by pump after liquid feed valve draws the ammonium sulfate reactive tank 30, then via liquid-outlet valve, ammonium sulfate is imported in reactive tank 30.Because the recycle system 80 can increase the mobility of ammonium sulfate in reactive tank 30, thus the precipitation of the second catalyzer 31 (for example calcium oxide) can be avoided, and then improve the speed of reaction that ammonium sulfate is converted into ammonia.
The foregoing is only illustrative, but not be restricted person.Anyly do not depart from spirit of the present invention and category, and the equivalent modifications that it is carried out or change, the content that all should define according to claim is as the criterion.
Claims (10)
1. an ammonia recovery system, is characterized in that, is applicable to reclaim the Yi Yuanshui that contains ammonia, and this ammonia recovery system at least comprises:
One ammonia dialysis module, comprises at least one dialyzer, this ammonia dialysis module be by this dialyzer dialysis by this former water after one first catalyst, make this former water after dialysis with sulfuric acid reaction and must ammonium sulfate;
One reactive tank, is to be communicated with this ammonia dialysis module, and this reactive tank is by one second catalyzer, to take that to transform ammonium sulfate be ammonia; And
One first ammonia absorber, is communicated with this reactive tank, this first ammonia absorber be by one first heat exchanger with cooling this first ammonia absorber to preset temperature, and by spraying pure water, ammonia is dissolved in pure water to change into ammoniacal liquor.
2. ammonia recovery system as claimed in claim 1, is characterized in that, this dialyzer is permeability type dialyzer.
3. ammonia recovery system as claimed in claim 1, is characterized in that, more comprises a storage tanks and is communicated with this first ammonia absorber, and this storage tanks stores ammoniacal liquor, and makes the temperature of ammoniacal liquor maintain this preset temperature by this first heat exchanger.
4. ammonia recovery system as claimed in claim 1, is characterized in that, more comprises a recycle system, to be communicated with this reactive tank by a liquid feed valve and a liquid-outlet valve.
5. ammonia recovery system as claimed in claim 4, it is characterized in that, this recycle system be by a pump after this liquid feed valve draws the ammonium sulfate this reactive tank, then via this liquid-outlet valve, ammonium sulfate is imported in this reactive tank to the speed of reaction that is converted into ammonia to improve ammonium sulfate.
6. ammonia recovery system as claimed in claim 1, is characterized in that, this first catalyzer is calcium oxide or sodium hydroxide.
7. ammonia recovery system as claimed in claim 1, is characterized in that, this second catalyzer is calcium oxide or sodium hydroxide.
8. ammonia recovery system as claimed in claim 1, is characterized in that, more comprises one second ammonia absorber and is communicated to this reactive tank and this first ammonia absorber, and wherein this second ammonia absorber is by spraying pure water, ammonia to be dissolved in pure water to change into ammoniacal liquor.
9. ammonia recovery system as claimed in claim 8, is characterized in that, this second ammonia absorber is with the ammoniacal liquor in cooling this second ammonia absorber by this first heat exchanger.
10. ammonia recovery system as claimed in claim 1, is characterized in that, more comprises a loop module and is communicated with this ammonia dialysis module and this former water, makes to be recycled in this former water via this loop module without the former water of dialysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310050059.7A CN103979703A (en) | 2013-02-07 | 2013-02-07 | Ammonia recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310050059.7A CN103979703A (en) | 2013-02-07 | 2013-02-07 | Ammonia recovery system |
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| CN103979703A true CN103979703A (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310050059.7A Pending CN103979703A (en) | 2013-02-07 | 2013-02-07 | Ammonia recovery system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182149A (en) * | 1992-12-17 | 1994-07-05 | Tohoku Electric Power Co Inc | Removal of ammonia from wastewater |
| CN101318752A (en) * | 2008-07-10 | 2008-12-10 | 浙江大学 | Treatment method and apparatus for recycling ammonia nitrogen wastewater |
| CN101602555A (en) * | 2009-07-09 | 2009-12-16 | 天津市环海净源高科技开发有限公司 | High ammonia nitrogen water treatment method and equipment |
| CN202139061U (en) * | 2011-06-24 | 2012-02-08 | 上虞帝瑞云涛化工有限公司 | Device for absorbing tail gas containing ammonium to prepare ammonium sulphate |
-
2013
- 2013-02-07 CN CN201310050059.7A patent/CN103979703A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182149A (en) * | 1992-12-17 | 1994-07-05 | Tohoku Electric Power Co Inc | Removal of ammonia from wastewater |
| CN101318752A (en) * | 2008-07-10 | 2008-12-10 | 浙江大学 | Treatment method and apparatus for recycling ammonia nitrogen wastewater |
| CN101602555A (en) * | 2009-07-09 | 2009-12-16 | 天津市环海净源高科技开发有限公司 | High ammonia nitrogen water treatment method and equipment |
| CN202139061U (en) * | 2011-06-24 | 2012-02-08 | 上虞帝瑞云涛化工有限公司 | Device for absorbing tail gas containing ammonium to prepare ammonium sulphate |
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Application publication date: 20140813 |