CN203065287U - Membrane integrated deamination device for ammonia-nitrogen wastewater - Google Patents
Membrane integrated deamination device for ammonia-nitrogen wastewater Download PDFInfo
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- CN203065287U CN203065287U CN 201320039200 CN201320039200U CN203065287U CN 203065287 U CN203065287 U CN 203065287U CN 201320039200 CN201320039200 CN 201320039200 CN 201320039200 U CN201320039200 U CN 201320039200U CN 203065287 U CN203065287 U CN 203065287U
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Abstract
The utility model relates to the technical field of wastewater deamination and in particular relates to a membrane integrated deamination device for ammonia-nitrogen wastewater. The membrane integrated deamination device for ammonia-nitrogen wastewater comprises a vacuum deamination circulating slot, a vacuum deamination membrane assembly, a membrane absorption circulating slot, a membrane absorption film assembly, an absorbent buffer slot and an absorbent circulating slot, wherein the vacuum deamination circulating slot is connected with the vacuum deamination membrane assembly in a circulating manner; the vacuum deamination membrane assembly is connected with the membrane absorption circulating slot; the membrane absorption circulating slot is connected with the membrane absorption film assembly in the circulating manner; the membrane absorption film assembly is connected with the absorbent circulating slot in the circulating manner; the membrane absorption film assembly is connected with the absorbent buffer slot; and the absorbent buffer slot is connected with the vacuum deamination circulating slot. The membrane integrated deamination device for the ammonia-nitrogen wastewater has the advantages of being investment-saving, simple to operate, convenient to operate and manage, small in floor area, low in cost and the like.
Description
Technical field
The utility model relates to waste water deamination technical field, and particularly a kind of application sets film forming is carried out the integrated deamination device that the high performance membrane deamination is handled to the high ammonia-containing water of industry.
Background technology
As common water body and topsoil, ammonia and nitrogen pollution all can produce great harm to human health and ecotope, and ammonia nitrogen is one of main oxygen consumption pollutent in the water body, directly enters water body, causes the pollution of water body easily.China's ammonia nitrogen waste water has a large capacity and a wide range, mainly from trade effluents such as petrochemical complex, metallurgy, pharmacy, chemical fertilizer, and the secondary water outlet of the movement of humans and animals, sanitary sewage, destructor plant etc.
The major technique of handling ammonia nitrogen waste water at present has: methods such as biological denitrificaion method, blow-off method and vaporizing extract process, break point chlorination method, ion exchange method, chemical precipitation method, catalytic wet air oxidation, electroosmose process and liquid-film method.
The biological denitrificaion method is the most frequently used method of municipal effluent and trade effluent, mainly utilize microorganism under the effect of anaerobism, anoxic, biochemical treatment process such as aerobic, make that the ammonia nitrogen material is converted into nitrogen in the water, but the biological denitrificaion method is had relatively high expectations to waste water quality, is not suitable for the denitrogenation of the trade effluent of low organism, high density, high salinity, difficult degradation.Blow-off method and vaporizing extract process all are that ion state ammonium was converted into molecular state ammonia, makes ammonia nitrogen transfer to gas phase from liquid phase when waste water ph was adjusted to alkalescence.This method is usually used in the processing of high-concentration ammonia nitrogenous wastewater.But exist processing efficiency low when actually operating, high gas-water ratio stripping causes the processing cost height, causes phenomenons such as secondary pollution easily.Break point chlorination method and ion exchange method only are applicable to handles low-concentration ammonia-nitrogen waste water, adopt ion exchange method to handle the ammonia nitrogen waste water of high density, can frequently cause operational difficulty, working cost height because of resin regeneration, its resin regeneration liquid is high-concentration ammonia nitrogenous wastewater, still needs further processing.Chemical precipitation method mainly is ammonia nitrogen and phosphate radical and magnesium ion generation magnesium ammonium phosphate (struvite) precipitation of utilizing in the waste water, will precipitate filtering again, thereby remove the ammonia nitrogen in the waste water.This method can be handled the ammonia nitrogen waste water of various concentration, but also exists processing cost height, removal efficiency low, the inconvenience for the treatment of facility Operation and Maintenance, and magnesium ammonium phosphate purity is low, shortcomings such as difficult treatment.
Obviously, more than the method that removes of several ammonia nitrogen in waste water of Jie Shaoing respectively has relative merits, but all there are certain shortcoming in these methods and use limitation, and as the processing cost height, condition control is strict, easily causes secondary pollution etc.
Along with the progress of membrane technique level, the application advantage of membrane technique in environmental area manifests day by day, and ammonia nitrogen waste water film deamination technology also is research and the focus of using.Film deamination technology commonly used at present has vacuum diaphragm deamination, membrane distillation deamination, film to absorb deamination, membrane bioreactor deamination etc.Wherein membrane bioreactor is the branch of biological deamination, uses limited in high-concentration hardly-degradable trade effluent deamination field.It all is to adopt dewatering microporous film that liquid/gas or liquid/liquid two-phase are separated that vacuum diaphragm deamination and film absorb deamination, and the hydrophobic membrane fenestra provides the interface of liquid/gas or liquid/liquid two alternate mass transfers, and the mass transfer motivating force is the ammonia partial pressure difference of membrane interface both sides.It all is two kinds of forms of membrane distillation deamination that vacuum diaphragm deamination and film absorb deamination, and only the vacuum diaphragm deamination is to utilize vacuum technique that membrane interface is striden the film amino molecule to take out of fast, makes to form interface ammonia partial pressure difference; It is to utilize acidic solution to make absorption agent that film absorbs deamination, its fast chemical reaction interface ammonia partial pressure difference is increased obviously, have higher deamination efficient.Film deamination technology provides bigger contact area, is a kind of brand-new, effective more contact mass transfer.Characteristics such as film deamination method has less investment, energy consumption is low, efficient, easy to use and simple to operate, membrane absorption method also has the big advantage of mass transfer area and does not have phenomenons such as entrainment, liquid flooding, channel, bubbling to take place in addition, and its technical superiority is fairly obvious.
Adopt film deamination technical finesse high-concentration industrial ammonia-containing water to exist some technical barriers to need to solve equally.Vacuum diaphragm deamination deamination efficient is limited, its deamination efficient and initial ammonia nitrogen concentration, temperature, vacuum tightness, pH, deamination time and film properties etc. have direct relation, general vacuum deamination full scale plant has only the deamination efficient about 60-88%, waste water is difficult to qualified discharge or reuse standard behind the deamination, but the recyclable ammoniacal liquor of making about 15% of its ammonia that removes is back to industrial production, thereby can reduce the ammonia-containing water processing cost; Film absorbs deamination and adopts dilute sulphuric acid, dilute hydrochloric acid or acid waste liquid deamination, its deamination efficient and initial ammonia nitrogen concentration relation are little, but acidic solution pH value, temperature, deamination time and film properties have tangible influence to deamination efficient, film absorbs deamination efficient generally can reach 95-99%, be a kind of deamination of film efficiently mode, even ammonia nitrogen can be taken off to 10mg/l.But by products such as the ammonium sulfate that forms behind the film absorption deamination, ammonium chloride, because concentration is low, the low directly as fertilizer sources of pH value is used, and need solve the recovery problem of the absorption liquid that gives up.There is the high realistic problem of processing cost again in general " evaporation-concentrate-the crystallization salt making technology " adopted at present, the comprehensive utilization of useless absorption liquid industry, residing geographical position and industrial environment normal and that enterprise is engaged in have very big relation, in general, the disposal of useless absorption liquid is stubborn problem rather, mishandlingly very easily forms secondary pollution.High density (ammonia nitrogen concentration is greater than 3000mg/l) ammonia nitrogen waste water adopts vacuum diaphragm deamination or film to absorb the deamination mode separately all to have the shortcoming that processing efficiency is limited or processing cost is high, and the film deamination treatment technology of seeking economical and efficient and technology are to solve one of ammonia nitrogen waste water resource utilization and processing effective way up to standard.
The main reference document:
(1) Zhao Zongsheng, Liu Hongliang, LiBing Wei, Yuan Guangyu.The high-efficiency biological denitrification approach of high-concentration ammonia nitrogenous wastewater.China's water supply and drainage, 2001,17 (5): 24-28.
(2) He Yan, Zhao Youcai, Zhou Gongming.High-concentration ammonia nitrogenous wastewater denitride technology progress.Treatment of Industrial Water, 2008,28 (1): 1-4.
(3) Yang Xiaoyi, Jiang Zhanpeng, Pan Chengfeng.Embrane method is handled the research of high-concentration ammonia nitrogenous wastewater.Water technology, 2003,29 (2): 85-88.
The utility model content
Technical problem to be solved in the utility model is to overcome above-mentioned technological deficiency, provides a kind of application sets film forming that the high ammonia-containing water of industry is carried out the integrated deamination device that the high performance membrane deamination is handled.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: the integrated deamination device of a kind of ammonia nitrogen waste water film, comprise the vacuum deamination circulation groove, the vacuum deamination membrane module, film absorbs circulation groove, film absorbing film assembly, absorption agent dashpot and absorption agent circulation groove, described vacuum deamination circulation groove is connected with described vacuum deamination membrane module circulation, described vacuum deamination membrane module absorbs circulation groove with described film and is connected, described film absorbs circulation groove and is connected with described film absorbing film component loops, described film absorbing film assembly is connected with described absorption agent circulation groove circulation, described film absorbing film assembly also is connected with described absorption agent dashpot, and described absorption agent dashpot is connected with described vacuum deamination circulation groove.Wherein, described vacuum deamination circulation groove, vacuum deamination membrane module, film absorb between circulation groove, film absorbing film assembly, absorption agent dashpot and the absorption agent circulation groove and connect by water pipe.
The beneficial effects of the utility model are: the qualified discharge that not only can realize high-concentration ammonia nitrogenous wastewater, and can reclaim in the high ammonia-nitrogen wastewater about 95% ammonia (can accomplish that in theory 100% ammonia reclaims), realize recycling, solved the recycling difficult problem that single employing film absorbs the spent acid ammonium sulfate of deamination existence, avoided secondary pollution, especially be fit to the improvement of the high-concentration ammonia nitrogenous wastewater of the low chemical oxygen demand (COD) of industrial circle, and this integrated film deamination mode have reduced investment, simple to operate, operational management makes things convenient for, little, the low cost and other advantages of floor space.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described vacuum deamination membrane module and film absorbing film assembly are the hollow membrane assembly, are provided with dewatering microporous film in described vacuum deamination membrane module and the film absorbing film assembly.The little employing weaving method of described hydrophobic tubular fibre, vertically every 2～3cm every hollow membrane is separated along the film silk with polyester or glass cord, hollow-fibre membrane pore membrane hollow membrane assembly is having the perforation water distributor along the design of film silk direction central axis position, be provided with the division plate of 1～2 cm thick in the middle part, square section, make waste water in the inner evenly distribution of putamina, mass transfer coefficient improves greatly.
Further, the aperture of described dewatering microporous film is 0.02～0.08 μ m.
Further, described dewatering microporous film is hydrophobic polypropylene film or hydrophobic fibre film.Described hydrophobic polypropylene film or PVDF, PTFE hydrophobic fibre film waste water can not soak into film, and the ammonia in the ammonia-containing water is motivating force with the ammonia partial pressure difference of film both sides, pass through fenestra with the gaseous ammonia molecules form, thereby reach the purpose of deamination.
Further, described hydrophobic fibre film is PVDF or PTFE film.
Further, described vacuum deamination membrane module also is connected by vacuum-lines and ammonia recovery vacuum system.
Further, described vacuum deamination circulation groove, vacuum deamination membrane module, film absorb between circulation groove, film absorbing film assembly, absorption agent dashpot or any two connector elements of absorption agent circulation groove and are provided with the direction of flow switching valve.The direction of flow switching valve refer to can according to parameters such as ammonia nitrogen concentration, pH, the water yield in the water control ammonia-containing water or absorbent stream to facility.
Further, be provided with the vacuum deamination recycle pump between described vacuum deamination circulation groove and the vacuum deamination membrane module.
Further, described film absorbs between circulation groove and the film absorbing film assembly and is provided with the film absorbent recirculation pump.
Further, be provided with the absorption agent recycle pump between described film absorbing film assembly and the absorption agent circulation groove.
Description of drawings
Fig. 1 is the utility model synoptic diagram.
1, vacuum deamination circulation groove, 2, vacuum deamination membrane module, 3, film absorbs circulation groove, 4, film absorbing film assembly, 5, the absorption agent circulation groove, 6, the absorption agent dashpot, 7, dewatering microporous film, 8, dewatering microporous film, 9, the vacuum deamination recycle pump, 10, the film absorbent recirculation pump, 11, absorption agent recycle pump, 12, direction of flow switching valve, 13, the direction of flow switching valve, 14, the direction of flow switching valve, 15, direction of flow switching valve, 16, direction of flow switching valve, 17, the direction of flow switching valve, 18, direction of flow switching valve, 19, ammonia reclaim vacuum system.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not for limiting scope of the present utility model.
As shown in Figure 1, arrow is represented water (flow) direction, and current can only flow in the direction of arrows, can not the contrary direction of arrow flow.The utility model comprises vacuum deamination circulation groove 1, vacuum deamination membrane module 2, film absorbs circulation groove 3, film absorbing film assembly 4, absorption agent dashpot 6 and absorption agent circulation groove 5, described vacuum deamination circulation groove 1 is connected with described vacuum deamination membrane module 2 circulations, described vacuum deamination membrane module 2 absorbs circulation groove 3 with described film and is connected, described film absorbs circulation groove 3 and is connected with described film absorbing film assembly 4 circulations, described film absorbing film assembly 4 is connected with described absorption agent circulation groove circulation, described film absorbing film assembly 4 also is connected with described absorption agent dashpot 6, and described absorption agent dashpot 6 is connected with described vacuum deamination circulation groove 1.Wherein, described vacuum deamination circulation groove 1, vacuum deamination membrane module 2, film absorb between circulation groove 3, film absorbing film assembly 4, absorption agent dashpot 6 and the absorption agent circulation groove 5 and connect by water pipe, i.e. fine line among the figure.It is that 19 systems connect that described vacuum deamination membrane module 2 also reclaims vacuum by vacuum-lines (among the figure shown in the dotted line) and ammonia.Be provided with direction of flow switching valve 13 between described vacuum deamination circulation groove 1 and the vacuum deamination membrane module 2, described vacuum deamination membrane module 2 and film absorb between the circulation groove 3 and are provided with direction of flow switching valve 14, described film absorbs between circulation groove 3 and the film absorbing film assembly 4 and is provided with direction of flow switching valve 16, be provided with direction of flow switching valve 17 between described film absorbing film assembly 4 and the absorption agent dashpot 6, be provided with direction of flow switching valve 18 between described film absorbing film assembly 4 and the absorption agent circulation groove 5, be provided with direction of flow switching valve 12 between described absorption agent dashpot and the vacuum deamination circulation groove.Be provided with between described vacuum deamination circulation groove 1 and the vacuum deamination membrane module to be provided with between film absorbent recirculation pump 10, described film absorbing film assembly 4 and the absorption agent circulation groove 5 between vacuum deamination recycle pump 9, described film absorption circulation groove 3 and the film absorbing film assembly 4 and be provided with absorption agent recycle pump 11.Described vacuum deamination membrane module 2 is the hollow membrane assembly with film absorbing film assembly 4, is provided with dewatering microporous film 7 in the vacuum deamination membrane module 2, is provided with dewatering microporous film 8 in the film absorbing film assembly 4.Described dewatering microporous film 7 and/or 8 is hydrophobic polypropylene film or hydrophobic fibre film.
During work, vacuum deamination assembly 2 separates ammonia-containing water and vacuum system by film, and film absorbing film assembly 4 separates ammonia-containing water and absorption agent dilution heat of sulfuric acid by film.Ammonia-containing water adopts NaOH solution to transfer pH to 10-11, enter vacuum deamination circulation groove 1 after the strainer pre-treatment through the 5-20 micron, vacuum deamination recycle pump 9 pumps into vacuum diaphragm deamination assembly 2 with ammonia-containing water, returns vacuum deamination circulation groove 1 behind vacuum diaphragm deamination assembly 2 deaminations.Flow to by the waste water behind direction of flow switching valve 13 and the 14 control deaminations.When ammonia-containing water deamination rate was lower than 80% left and right sides, direction of flow switching valve 13 was opened, and direction of flow switching valve 14 cuts out, and ammonia-containing water is all the time at vacuum deamination circulation groove 1 and 2 circulation deaminations of vacuum diaphragm deamination assembly; After about ammonia-containing water deamination rate reaches 80%, direction of flow switching valve 13 cuts out, and direction of flow switching valve 14 is opened, and the waste water behind the deamination enters film and absorbs circulation groove 3.
The lower concentration ammonia-containing water pH value that film absorbs in the circulation groove 3 adopts NaOH solution to be adjusted at again in 10～11, pumps into film absorbing film assembly 4 by film absorbent recirculation pump 10, returns film and absorb circulation groove 3 after film absorbs deamination.Flow to by the waste water behind direction of flow switching valve 13 and the 14 control deaminations.When ammonia-containing water deamination rate was lower than 95%-99%, direction of flow switching valve 16 was opened, and direction of flow switching valve 15 cuts out, and ammonia-containing water absorbs circulation groove 3 and 4 circulation absorptions of film absorption deamination assembly deamination at film all the time; After ammonia-containing water deamination rate reached 95-99%, direction of flow switching valve 15 was opened, and flows to switching valve 16 and closes, and the waste water behind the deamination is qualified discharge or reuse behind pH regulator.
The film absorption agent is initially dilution heat of sulfuric acid or spent acid solution in the absorption agent circulation groove 5, adopt the direct way of contact to absorb deamination in film absorbing film assembly 4, dilute sulphuric acid or spent acid solution are at the film surface in contact and ammonia react generates ammonium sulfate or other contains the propylhomoserin waste liquid.Absorption agent in the absorption agent circulation groove 5 pumps into film absorbing film assembly 4 opposite sides by absorption agent recycle pump 11, returns absorption agent circulation groove 5 after absorbing deamination.The flow direction by direction of flow switching valve 17 and 18 control absorption agents.When absorption agent pH when being lower than 2～3, direction of flow switching valve 18 is opened, direction of flow switching valve 17 cuts out, absorption agent is all the time at 4 circulation absorptions of absorption agent circulation groove 5 and film absorbing film assembly deamination; When containing absorption agent pH and reach 2～3, direction of flow switching valve 18 cuts out, and direction of flow switching valve 17 is opened, and absorption agent is pumped to absorption agent dashpot 6.Useless absorption agent can be opened direction of flow switching valve 12 according to concentration and the flow rate fluctuation of water inlet ammonia-containing water in good time in the absorption agent dashpot 6, makes useless absorption agent from flowing into vacuum deamination circulation groove 1, mixes deamination with ammonia-containing water.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. integrated deamination device of ammonia nitrogen waste water film, it is characterized in that, comprise the vacuum deamination circulation groove, the vacuum deamination membrane module, film absorbs circulation groove, film absorbing film assembly, absorption agent dashpot and absorption agent circulation groove, described vacuum deamination circulation groove is connected with described vacuum deamination membrane module circulation, described vacuum deamination membrane module absorbs circulation groove with described film and is connected, described film absorbs circulation groove and is connected with described film absorbing film component loops, described film absorbing film assembly is connected with described absorption agent circulation groove circulation, described film absorbing film assembly also is connected with described absorption agent dashpot, and described absorption agent dashpot is connected with described vacuum deamination circulation groove.
2. the integrated deamination device of ammonia nitrogen waste water film according to claim 1 is characterized in that, described vacuum deamination membrane module and film absorbing film assembly are the hollow membrane assembly, is provided with dewatering microporous film in described vacuum deamination membrane module and the film absorbing film assembly.
3. the integrated deamination device of ammonia nitrogen waste water film according to claim 2 is characterized in that, the aperture of described dewatering microporous film is 0.02～0.08 μ m.
4. the integrated deamination device of ammonia nitrogen waste water film according to claim 2 is characterized in that, described dewatering microporous film is hydrophobic polypropylene film or hydrophobic fibre film.
5. the integrated deamination device of ammonia nitrogen waste water film according to claim 1 is characterized in that, described vacuum deamination membrane module also reclaims vacuum system with ammonia and is connected.
6. according to the integrated deamination device of the arbitrary described ammonia nitrogen waste water film of claim 1 to 4, it is characterized in that described vacuum deamination circulation groove, vacuum deamination membrane module, film absorb between circulation groove, film absorbing film assembly, absorption agent dashpot or any two connector elements of absorption agent circulation groove and be provided with the direction of flow switching valve.
7. according to the integrated deamination device of the arbitrary described ammonia nitrogen waste water film of claim 1 to 4, it is characterized in that, be provided with the vacuum deamination recycle pump between described vacuum deamination circulation groove and the vacuum deamination membrane module.
8. according to the integrated deamination device of the arbitrary described ammonia nitrogen waste water film of claim 1 to 4, it is characterized in that described film absorbs between circulation groove and the film absorbing film assembly and is provided with the film absorbent recirculation pump.
9. according to the integrated deamination device of the arbitrary described ammonia nitrogen waste water film of claim 1 to 4, it is characterized in that, be provided with the absorption agent recycle pump between described film absorbing film assembly and the absorption agent circulation groove.
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| CN 201320039200 CN203065287U (en) | 2013-01-18 | 2013-01-18 | Membrane integrated deamination device for ammonia-nitrogen wastewater |
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| CN 201320039200 CN203065287U (en) | 2013-01-18 | 2013-01-18 | Membrane integrated deamination device for ammonia-nitrogen wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957133A (en) * | 2017-04-19 | 2017-07-18 | 南昌航空大学 | A kind of processing method of biogas slurry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957133A (en) * | 2017-04-19 | 2017-07-18 | 南昌航空大学 | A kind of processing method of biogas slurry |
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Granted publication date: 20130717 Termination date: 20220118 |