CN201485354U - Novel device for processing ammonia nitrogen waste water - Google Patents
Novel device for processing ammonia nitrogen waste water Download PDFInfo
- Publication number
- CN201485354U CN201485354U CN2009201930106U CN200920193010U CN201485354U CN 201485354 U CN201485354 U CN 201485354U CN 2009201930106 U CN2009201930106 U CN 2009201930106U CN 200920193010 U CN200920193010 U CN 200920193010U CN 201485354 U CN201485354 U CN 201485354U
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- reverse osmosis
- electrodialysis
- waste water
- ammonia nitrogen
- nitrogen waste
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Abstract
The utility model relates to a novel device for processing ammonia nitrogen waste water. The conventional processing device is only used for processing one kind of waste water, and is not suitable for processing ammonia nitrogen waste water with different concentrations. The novel device is characterized by consisting of a first preprocessing system, a second preprocessing system, a reverse osmosis system, an electrodialysis system and an evaporation and crystallization system; the first preprocessing system is connected to the liquid inlet end of the reverse osmosis system; the second preprocessing system is connected to the liquid inlet end of the electrodialysis system; the reverse osmosis system is formed by connecting a one-stage reverse osmosis device and a second-stage reverse osmosis device in series; the electrodialysis system is formed by connecting a one-stage electrodialysis device, a second-stage electrodialysis device and a third-stage electrodialysis device in series; and the second-stage electrodialysis device is connected with the evaporation and crystallization system through a pipeline. The novel device can process high-concentration and low-concentration ammonia nitrogen waste water simultaneously.
Description
Technical field
The utility model relates to sewage treatment equipment, especially a kind of device of handling ammonia nitrogen waste water.
Background technology
The processing of ammonia nitrogen waste water always is the emphasis and the difficult point of sewage disposal, with the kind of ammonia nitrogen waste water, the difference of ammonia-nitrogen content, mainly contains multiple treatment process methods such as physico-chemical processes, chemical method, biological process.
Ammonia nitrogen waste water for rare earth and metallurgy industry generation does not still have the ideal treatment process at present.Treatment process for low concentration wastewater has biochemical processing process, zeolite ion exchange method, low-temperature catalytic oxidation method etc.
Biochemical processing process: this technology utilization biological bacteria is converted into ammonia nitrogen with organonitrogen, becomes gaseous nitrogen to overflow from water nitrate-nitrogen reduction by nitrification and denitrification again, thereby reaches the purpose of denitrogenation.But require that ammonia nitrogen concentration can not surpass 200mg/L in the waste water.
Zeolite ion exchange method: adopt natural zeolite to do absorption agent absorption ammonia nitrogen, ammonia-N removal rate is had only 50%.Since this method be suitable for lower concentration (＜50mg/L) ammonia nitrogen waste water, inapplicable to the processing of the rare earth ammonia nitrogen waste water of high density, can be used as a kind of householder method and consider to use.
The embrane method concentration: the reverse osmosis seawater desalting technology is carried out the embrane method concentration to low concentration ammonium chloride wastewater and is obtained a large amount of technologies with pure water and reclaim the ammonium chloride concentrated solution that concentration is 5.5-6% in recent years, and concentrated solution can be used for reclaiming ammonium chloride.Mainly be applicable to the ammonia nitrogen waste water of lower concentration.
Can adopt evaporation concentration method, alkaline ammonia still process method and chemical precipitation method etc. to the improvement of high-concentration waste water.
Evaporation concentration method: the waste water direct evaporation concentrates to reclaim presses salt, and technology is simple, and waste water can reuse be realized " zero release ", all kinds of ammonia nitrogen waste waters all are suitable for, but energy consumption is higher.
Alkalescence ammonia still process method: comprise steam blow-off method and air stripping method, its mechanism is that ammonia nitrogen in high density changes free ammonia under alkaline condition, is blown to gas phase and isolating method by gas by liquid phase.Steam blow-off method ammonia nitrogen removal efficient height can reclaim ammoniacal liquor and be used, and air stripping method is relatively economical, and is easy to operate, but the ammonia nitrogen removal efficiency ratio the former is low, especially the ammonia nitrogen waste water of high density can not reach emission standard by a stripping.Be applicable to the technology that needs ammoniacal liquor in the production, but the part reuse, but device is bigger, and energy consumption is also high.
Chemical precipitation method: this method is that (＜50mg/L) novel method is utilized NH for the processing ammonia nitrogen waste water that occurs the nineties in last century
4+And Mg
2+, PO
4 3-Under suitable pH value, can generate MgNH
4PO
4Precipitate and the removal ammonia nitrogen, this method can reach more than 98% ammonia-N removal rate, the MgNH that obtains
4PO
4It is a kind of long-acting sustained-release complex fertilizer.Chemical precipitation method is because its raw material phosphoric acid that adopts, magnesium oxide or magnesium hydroxide cost are higher, and its final product magnesium ammonium phosphate price is low, but still is unsuitable for industrial application at present.
In metallurgy and the rare-earth trade production process, the ammonia nitrogen waste water of generation generally has the ammonia nitrogen waste water of high density and two kinds of different concns of lower concentration.Present treatment unit is all only handled a kind of waste water wherein, does not still have the ammonia nitrogen waste water treatment unit that is applicable to different concns.
The utility model content
Technical problem to be solved in the utility model is to overcome the defective that above-mentioned prior art exists, and a kind of new device of handling the different concns ammonia nitrogen waste water that is applicable to is provided, and at the ammonia nitrogen waste water of different concns, adopts suitable device to handle.
For this reason, the utility model adopts following technical scheme: a kind of new device of handling ammonia nitrogen waste water, it is characterized in that it is by first pretreatment system, second pretreatment system, reverse osmosis system, electrodialysis system and evaporation and crystallization system are formed, described first pretreatment system is connected the liquid feeding end of reverse osmosis system, described second pretreatment system is connected the liquid feeding end of electrodialysis system, first pretreatment system is by first strainer, first interchanger and first pH adjustment tank are in series, and second pretreatment system is by second strainer, second interchanger and second pH adjustment tank are in series; Described reverse osmosis system is in series by the firsts and seconds reverse osmosis unit, electrodialysis system is in series by one-level, secondary and three-stage electrodialysis device, the concentrated solution outlet of first-stage reverse osmosis device is connected by the fluid inlet of pipeline with the three-stage electrodialysis device, and the concentrated solution outlet of two-pass reverse osmosis device is connected by the fluid inlet of pipeline with first pH adjustment tank; The water outlet of three-stage electrodialysis device is connected by the fluid inlet of pipeline with the two-pass reverse osmosis device, and dense water out is connected by the fluid inlet of return line with second pH adjustment tank, and the secondary electrodialysis unit is connected with evaporation and crystallization system by pipeline.
The utility model adopts reverse osmosis system to carry out concentration to the ammonia nitrogen waste water of lower concentration, and the ammonia nitrogen waste water of high density adopts electrodialysis system to carry out concentration.
Principle of work of the present utility model is as follows: ammonia nitrogen waste water at first through pretreatment system lower the temperature, after the adjusting of solid filtering and pH value, the ammonia nitrogen waste water of high density enters into electrodialysis system, the ammonia nitrogen waste water of lower concentration enters into reverse osmosis system, after two kinds of ammonia nitrogen waste waters process reverse osmosis systems of high and low concentration and the electrodialysis system comprehensive treating process, fresh water returns the production system reuse, the concentrated solution of high density enters into evaporation and crystallization system and handles, and obtains the crystal of ammonium salt.
The new device of above-mentioned processing ammonia nitrogen waste water, evaporation and crystallization system is in series by triple-effect evaporator, crystallizer and whizzer.
The utlity model has following advantage:
1, can handle the ammonia nitrogen waste water of two kinds of different concns of high and low concentration simultaneously;
2, at the ammonia nitrogen waste water of different concns, adopt suitable process unit to handle, the ammonia nitrogen waste water of lower concentration adopts reverse osmosis system to carry out concentration, the ammonia nitrogen waste water of high density adopts electrodialysis system to carry out concentration, the two is not an independent operating, but organically in conjunction with handling;
3, through after the comprehensive treating process of the present utility model, fresh water is back to production system, after concentrated solution reaches finite concentration, enter evaporation and crystallization system again and carry out crystallization, help reducing the energy consumption of handling ammonia nitrogen waste water, ammonia nitrogen as byproduct, has been realized the zero release of ammonia nitrogen waste water with the form of ammonium salt;
4, the processing cost of ammonia nitrogen waste water is low, makes the industry that produces ammonia nitrogen waste water realize environmental protection, comprehensive cyclic production.
Below in conjunction with specification drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure, 1 is first strainer, and 2 is first interchanger, 3 is first pH adjustment tank, and 4 is the first-stage reverse osmosis device, and 5 is the two-pass reverse osmosis device, 6 is second strainer, and 7 is second interchanger, and 8 is second pH adjustment tank, 9 is the one-level electrodialysis unit, 10 is the secondary electrodialysis unit, and 11 is the three-stage electrodialysis device, and 12 is triple-effect evaporator, 13 is crystallizer, and 14 is whizzer.
Embodiment
The device of processing ammonia nitrogen waste water as shown in Figure 1, first pretreatment system is in series by first strainer 1, first interchanger 2 and first pH adjustment tank 3.Second pretreatment system is in series by second strainer 6, second interchanger 7 and second pH adjustment tank 8.Reverse osmosis system is in series by the firsts and seconds reverse osmosis unit, electrodialysis system is in series by one-level, secondary and three-stage electrodialysis device 9,10,11, the concentrated solution outlet of first-stage reverse osmosis device 4 is connected by the fluid inlet of pipeline with three-stage electrodialysis device 11, and the concentrated solution outlet of two-pass reverse osmosis device 5 is connected by the fluid inlet of pipeline with first pH adjustment tank 3; The water outlet of three-stage electrodialysis device 11 is connected by the fluid inlet of pipeline with two-pass reverse osmosis device 5, and dense water out is connected by the fluid inlet of return line with second pH adjustment tank 8, and secondary electrodialysis unit 10 is connected with evaporation and crystallization system by pipeline.Described first pretreatment system is connected the liquid feeding end of first-stage reverse osmosis device 4, and described second pretreatment system is connected the liquid feeding end of three-stage electrodialysis device 9, and evaporation and crystallization system is in series by triple-effect evaporator 12, crystallizer 13 and whizzer 14.
The working process of the utility model device is as follows: the ammonia nitrogen waste water A of lower concentration removes the solid particulate in the waste water through first strainer 1, through first interchanger Temperature Treatment in the waste water is arrived suitable temperature again, make the pH value be adjusted to desired value through first pH adjustment tank then and obtain reverse osmosis stoste C; Reverse osmosis stoste C makes the ammonia nitrogen waste water of lower concentration carry out concentrating the first time through first-stage reverse osmosis device 4, the liquid D that sees through that handles the back generation through first-stage reverse osmosis device 4 enters into two-pass reverse osmosis device 5, and concentrated solution E enters into three-stage electrodialysis device 11 as its dilute side solution; After the seeing through liquid D and handle through the two-pass reverse osmosis device of first-stage reverse osmosis, it sees through liquid F and is back to production system as reuse water, and concentrated solution G enters into a pH value surge tank 3.Meanwhile, the ammonia nitrogen waste water B of high density gets rid of wherein solid impurity through second strainer 6, handles suitable temperature through second interchanger again, enters into second pH adjustment tank and is adjusted to suitable pH value and obtains electrodialysis stoste H; Electrodialysis stoste H obtains fresh water I in dilute side after handling through one-level electrodialysis 9, and dense water side obtains dense water I '; Fresh water I and dense water I ' obtain fresh water II in dilute side after handling through secondary electrodialysis process 10, and dense water side obtains dense water II ', and dense water II ' has reached certain concentration and enters into triple effect evaporation device 12; The electrodialytic fresh water II of concentrated solution that first-stage reverse osmosis device 4 obtains and secondary is respectively as the dilute side solution and the dense water side solution of three-stage electrodialysis device, the fresh water III that obtains after process three-stage electrodialysis device is handled is as the stoste of two-pass reverse osmosis device, and dense water III ' is as the stoste of one-level electrodialysis unit.Dense water II ' enters into crystallizer 13 after handling through triple-effect evaporator, filters through whizzer 14 then and obtains ammonium salt, and ammonium salt can be used as byproduct.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all falls in the protection domain of the present utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. new device of handling ammonia nitrogen waste water, it is characterized in that it is made up of first pretreatment system, second pretreatment system, reverse osmosis system, electrodialysis system and evaporation and crystallization system, described first pretreatment system is connected the liquid feeding end of reverse osmosis system, described second pretreatment system is connected the liquid feeding end of electrodialysis system, first pretreatment system is in series by first strainer, first interchanger and first pH adjustment tank, and second pretreatment system is in series by second strainer, second interchanger and second pH adjustment tank; Described reverse osmosis system is in series by the firsts and seconds reverse osmosis unit, electrodialysis system is in series by one-level, secondary and three-stage electrodialysis device, the concentrated solution outlet of first-stage reverse osmosis device is connected by the fluid inlet of pipeline with the three-stage electrodialysis device, and the concentrated solution outlet of two-pass reverse osmosis device is connected by the fluid inlet of pipeline with first pH adjustment tank; The water outlet of three-stage electrodialysis device is connected by the fluid inlet of pipeline with the two-pass reverse osmosis device, and dense water out is connected by the fluid inlet of return line with second pH adjustment tank, and the secondary electrodialysis unit is connected with evaporation and crystallization system by pipeline.
2. the new device of processing ammonia nitrogen waste water according to claim 1 is characterized in that described evaporation and crystallization system is in series by triple-effect evaporator, crystallizer and whizzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201930106U CN201485354U (en) | 2009-08-27 | 2009-08-27 | Novel device for processing ammonia nitrogen waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201930106U CN201485354U (en) | 2009-08-27 | 2009-08-27 | Novel device for processing ammonia nitrogen waste water |
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| CN201485354U true CN201485354U (en) | 2010-05-26 |
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| CN2009201930106U Expired - Lifetime CN201485354U (en) | 2009-08-27 | 2009-08-27 | Novel device for processing ammonia nitrogen waste water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757149A (en) * | 2012-08-06 | 2012-10-31 | 哈尔滨工业大学 | Multi-stage membrane distillation treating method for ammonia nitrogen wastewater |
| CN103896354A (en) * | 2013-04-03 | 2014-07-02 | 江苏夏航环境工程有限公司 | Ammonia-nitrogen wastewater treatment device |
| CN104058525A (en) * | 2014-07-01 | 2014-09-24 | 中国天辰工程有限公司 | Method for recovering and treating production wastewater containing high ammonia nitrogen and nitrate nitrogen |
| CN104136378A (en) * | 2012-02-29 | 2014-11-05 | 阿尔斯通技术有限公司 | Method of treatment of amine waste water and a system for accomplishing the same |
| CN104812705A (en) * | 2012-11-27 | 2015-07-29 | 奥加诺株式会社 | Device for treating ammonia-containing wastewater, and method for treating ammonia-containing wastewater |
| CN109748444A (en) * | 2019-02-27 | 2019-05-14 | 湖南省丰源水务投资建设有限责任公司 | Ammonia nitrogen recovery method as resource in one heavy metal species deep processing pulverized coal preparation system washes |
| CN110606610A (en) * | 2019-08-30 | 2019-12-24 | 河南佰利联新材料有限公司 | Method for circularly treating metal chloride waste liquid by ammonia process |
-
2009
- 2009-08-27 CN CN2009201930106U patent/CN201485354U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104136378A (en) * | 2012-02-29 | 2014-11-05 | 阿尔斯通技术有限公司 | Method of treatment of amine waste water and a system for accomplishing the same |
| CN104136378B (en) * | 2012-02-29 | 2016-03-02 | 阿尔斯通技术有限公司 | The method of process amine waste water and the system realizing the method |
| CN102757149A (en) * | 2012-08-06 | 2012-10-31 | 哈尔滨工业大学 | Multi-stage membrane distillation treating method for ammonia nitrogen wastewater |
| CN102757149B (en) * | 2012-08-06 | 2013-07-24 | 哈尔滨工业大学 | Multi-stage membrane distillation treating method for ammonia nitrogen wastewater |
| CN104812705A (en) * | 2012-11-27 | 2015-07-29 | 奥加诺株式会社 | Device for treating ammonia-containing wastewater, and method for treating ammonia-containing wastewater |
| CN103896354A (en) * | 2013-04-03 | 2014-07-02 | 江苏夏航环境工程有限公司 | Ammonia-nitrogen wastewater treatment device |
| CN104058525A (en) * | 2014-07-01 | 2014-09-24 | 中国天辰工程有限公司 | Method for recovering and treating production wastewater containing high ammonia nitrogen and nitrate nitrogen |
| CN104058525B (en) * | 2014-07-01 | 2016-01-20 | 中国天辰工程有限公司 | Production waste recovery and treatment method containing high ammonia nitrogen and nitric nitrogen |
| CN109748444A (en) * | 2019-02-27 | 2019-05-14 | 湖南省丰源水务投资建设有限责任公司 | Ammonia nitrogen recovery method as resource in one heavy metal species deep processing pulverized coal preparation system washes |
| CN110606610A (en) * | 2019-08-30 | 2019-12-24 | 河南佰利联新材料有限公司 | Method for circularly treating metal chloride waste liquid by ammonia process |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |