CN203602446U - Multistage membrane extraction biological comprehensive treatment system for treating high ammonia nitrogen in waste water - Google Patents
Multistage membrane extraction biological comprehensive treatment system for treating high ammonia nitrogen in waste water Download PDFInfo
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- CN203602446U CN203602446U CN201320554867.2U CN201320554867U CN203602446U CN 203602446 U CN203602446 U CN 203602446U CN 201320554867 U CN201320554867 U CN 201320554867U CN 203602446 U CN203602446 U CN 203602446U
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Abstract
The utility model discloses a multistage membrane extraction biological comprehensive treatment system for treating high ammonia nitrogen in waste water. The multistage membrane extraction biological comprehensive treatment system comprises a pretreater, a pH regulator, a filter treater, a multistage membrane extractor, and a biological comprehensive treater, wherein the pretreater is provided with a first water inlet in which high-ammonia nitrogen waste water is introduced; the pH regulator is connected with a first water outlet of the pretreater; the filter treater is connected with a second water outlet of the pH regulator; the multistage membrane extractor sequentially consists of a primary-stage membrane extractor, a secondary-stage membrane extractor and a third-stage membrane extractor, the primary-stage membrane extractor is connected with a third water outlet on a filter, and the membrane extractors are connected through pipelines, extraction membranes are arranged in the membrane extractors and separate waste water from extraction liquor, the arrangement direction of the extraction membranes are parallel to the flowing direction of the waste water and extraction liquor; the biological comprehensive treater is connected with the primary-stage membrane extractor, the secondary-stage membrane extractor and the third-stage membrane extractor respectively; an ammonia hydroxide removal collector is arranged at the water outlet of the third-stage membrane extractor.
Description
Technical field
The utility model relates to a kind of biological treatment system, particularly the biological synthesis treatment system of high ammonia nitrogen in a kind of Using Multistage Membranes extraction treatment waste water.
Background technology
Nitrogen in waste water with organic nitrogen, ammonia-state nitrogen (NH
4 +-N), the various ways such as nitric nitrogen and nitrite nitrogen exists, and ammonia-state nitrogen is one of topmost existence form.The industry such as oil, chemical industry, food and pharmacy, and in city domestic sewage and percolate, the quantity discharged of ammonia nitrogen is all larger.Ammonia and nitrogen pollution source is many, and quantity discharged is large, and the change in concentration of discharge is large.According to statistics, 2012, the quantity discharged of national ammonia nitrogen in waste water was 610,000 tons; The quantity discharged of the ammonia nitrogen of urban life waste water is 137.9 ten thousand tons.In water surrounding, exist excess of ammonia nitrogen can cause many-sided harmful effect.
In waste water, the treatment technology of ammonia nitrogen is the heat subject of various countries' scholar's research always.Deamination method has a lot, at present mainly contains blow-off method, break point chlorination method, ion exchange method etc. in industrial application.Break point chlorination method and ion exchange method are applicable to the not wastewater treatment containing organic low-concentration ammonia-nitrogen.For the inorganic ammonia nitrogen waste water of high density, the at present more employing blow-off method of industrial application, but the ammonium sulfate concentrations that the ammonia nitrogen that stripping process decreasing ratio is low, stripping goes out generates after absorbing is low, cannot effectively utilize and dispose difficulty, easily produces secondary pollution.
Based on the above, the necessary property of a kind of research of the novel device for the treatment of ammonia nitrogen in waste water.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, adopts Using Multistage Membranes abstraction technique that high ammonia nitrogen in waste water is processed and reclaimed.
A kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water described in the utility model, comprise, pretreater, on described pretreater, offer the first water-in, enter described pretreater containing high ammonia-nitrogen wastewater by described the first water-in, described high ammonia-nitrogen wastewater ammonia-nitrogen content is 500mg/L～10000mg/L, and described pretreater is also provided with the first water outlet; PH-meter, described pH-meter is connected with described the first water outlet by pipeline, is also provided with the second water outlet on described pH-meter; Filtering treater, described filtering treater is connected with described the second water outlet by pipeline, and described filtering treater is also established the 3rd water outlet; Using Multistage Membranes extractor, comprise successively one-level film abstractor, secondary film abstractor and three grades of film abstractors, described one-level film abstractor is connected with described the 3rd water outlet, between film abstractors at different levels, be connected by pipeline, and inside all establish spe membrane, described spe membrane is separated described waste water and described extraction liquid, and described spe membrane put to described waste water and extract flow to parallel; Biological synthesis treater, is connected respectively for passing into from described one-level film abstractor, secondary film abstractor and three grades of waste liquids that film abstractor flows out by pipeline with described one-level film abstractor, secondary film abstractor and three grades of film abstractors; Wherein, in described Using Multistage Membranes extractor, every one-level film abstractor water outlet is equipped with switch valve for the switch to every one-level film abstractor pipeline being connected with subordinate film abstractor or the pipeline being connected with described biological synthesis treater.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, establishes grid or screen cloth in described pretreater, and aperture is 2mm～6mm, and described pretreater is for removing the particle that waste water is larger.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, in described pH-meter, establish alkali lye adding device and pH detecting unit, described pH detecting unit feeds back to described alkali lye adding device for detection of the pH value of waste water and by detected result, described alkali lye adding device adds alkali lye to the waste water of flowing through, described alkali lye is calcium hydroxide or sodium hydroxide solution, the waste water that added alkali lye detects through described pH detecting unit again, and the wastewater pH finally flowing out from described pH-meter is 10.5～11.5.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, described strainer is cloth bag type or disc filter.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, described spe membrane is hollow-fibre membrane, described spe membrane mean pore size is 30-70nm.Preferably, described spe membrane mean pore size is 50nm.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, described extraction liquid flows to contrary with described waste water in described Using Multistage Membranes treater.Waste water flow through successively one-level film abstractor, secondary film abstractor and three grades of film abstractors, after described Using Multistage Membranes extractor is processed, flow out from described three grades of film abstractor water outlets; Described extraction liquid in described Using Multistage Membranes extractor, flow through successively three grades of film abstractors, secondary film abstractor and one-level film abstractor, be finally recovered or again recycle containing the dope of ammonia nitrogen.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, in described Using Multistage Membranes extractor, every one-level film abstractor water outlet is also provided with automatic detection unit for detection of flowing out ammonia nitrogen concentration in waste water, judgement by ammonia nitrogen concentration is to control the orientation of described switch valve, detailed determination methods is: in the time that in the waste water of described one-level film abstractor water outlet, ammonia nitrogen concentration is lower than 200mg/L, water outlet enters biological synthesis processing, otherwise enters secondary film abstractor; Similarly, in the time that in described secondary film abstractor water outlet waste water, ammonia nitrogen concentration is lower than 200mg/L, water outlet enters biological synthesis processing, otherwise enters three grades of membrane extraction stages, generally, after three grades of spe membranes are processed, ammonia nitrogen removal frank can reach more than 99% substantially; According to whether also contain other compositions in waste water except ammonia nitrogen judge through described Using Multistage Membranes extractor waste water reclamation after treatment and still flow into described biological synthesis treater, concrete determination methods is: in the time only containing ammonia nitrogen in waste water, processing waste water through described Using Multistage Membranes extractor can be recovered; And in the time also containing other compositions in waste water except containing ammonia nitrogen, flow into described biological synthesis treater through described Using Multistage Membranes extractor waste water after treatment and be further processed.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, described one-level film abstractor is provided with extract flow outlet, described extract flow exit is established ammonia nitrogen detector and is flowed to valve, and described extract flow exports and is connected respectively with the extraction liquid inflow pipeline of being located on described three grades of film abstractors containing ammonia nitrogen dope withdrawer.The described valve that flows to leading to containing the pipeline of ammonia nitrogen dope withdrawer or lead to the control method that the pipeline enclosure of described three grades of film abstractors switches is: when after extraction liquid is flowed through three grades of film abstractors, secondary film abstractor and one-level film abstractor successively, concentration is still less than set(ting)value (being generally 30%), described ammonia nitrogen dope flows back to the import of described one-level film abstractor through pipeline, again recycles; When extraction liquid, after extraction, concentration is while being more than or equal to set(ting)value, and described ammonia nitrogen dope reclaims.
Preferably, described a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, wherein, the water outlet of described three grades of film abstractors is also provided with except ammoniacal liquor collector.
Based on technique scheme, the utlity model has following advantage: 1) Using Multistage Membranes extraction process can be brought into play the advantage in chemical engineering unit operation preferably, the mass-transfer efficiency of raising process, can realize extraction at the same level and reextraction process, adopts extracted species carrier to promote migration etc.; 2) high ammonia-nitrogen wastewater phase and extraction liquid phase, separately in film two side flow, do not form the liquid-liquid two-phase flow of direct contact, and the efficiency of extraction is greatly improved; 3) in Using Multistage Membranes extraction process, two-phase is done respectively single-phase flowing in film both sides, makes process avoid the impact of " back-mixing " and the restriction of " liquid flooding " condition; 4) wastewater streams is through described Using Multistage Membranes extractor, owing to there is no dispersion or the agglomeration process of phase, extraction agent high ammonia-nitrogen wastewater mutually in entrainment loss reduced; 5) there is the losing issue of film internal solvent in the immobilized liquid membrane operation that can avoid similar to it in high ammonia-nitrogen wastewater phase simultaneously in film both sides to solvent phase; 6) processing technological flow is succinct, and device layout compactness is taken up an area less, and method is easy to operate, non-secondary pollution; 7), by process adjustment, to containing organic high-concentration ammonia nitrogenous wastewater, can make the concentration of ammonia nitrogen be reduced to the degree of suitable biological treatment, thereby make organic pollutant and ammonia nitrogen in waste water realize Synergistic degradation; 8) to not containing the waste water of organic pollutant, directly isolate the ammonia nitrogen in waste water by film, Using Multistage Membranes extraction can concentrate and reclaim again the ammonia in waste water under the condition of normal temperature, normal pressure, recycles ammonia nitrogen resource, and the rate of recovery is high.
Accompanying drawing explanation
Fig. 1 is a kind of Using Multistage Membranes extraction biological synthesis treatment system schematic diagram of processing high ammonia nitrogen in waste water described in the utility model.
Embodiment
Below the utility model is described in further detail, to make those skilled in the art can implement according to this with reference to specification sheets word.
Process the Using Multistage Membranes extraction biological synthesis treatment system schematic diagram of high ammonia nitrogen in waste water in conjunction with a kind of shown in Fig. 1, under describe for example.
Embodiment 1
Certain refuse landfill percolate ammonia nitrogen concentration is 1000mg/L, get rid of particulate material in percolate through grid filtration, filter through high-efficiency fiber filter and security personnel's filter successively subsequently, adopt lime by percolate pH regulator to 10 left and right, enter the processing of one-level spe membrane, under the effect of film both sides ammonia partial pressure difference, the ammonia nitrogen in waste water is with amino molecule NH
3form see through film, and by acid absorb generate ammonium salt.Through detecting, one-level spe membrane water outlet ammonia nitrogen concentration drops to 360mg/L, then through the processing of secondary spe membrane, ammonia nitrogen concentration drops to below 100mg/L, and after biological synthesis is processed, ammonia nitrogen concentration is reduced to below 5mg/L, and ammonia-nitrogen removal rate reaches 99.5%.
Embodiment 2
Certain chemical pharmaceutical ammonia nitrogen in waste water concentration average out to 5600mg/L, get rid of particulate material in percolate through grid filtration, adopt sodium hydroxide by percolate pH regulator to 11 left and right, filter through disc filter subsequently, enter the processing of one-level spe membrane, under the effect of film both sides ammonia partial pressure difference, the ammonia nitrogen in waste water is with amino molecule NH
3form see through film, and by sulfuric acid absorption generate ammonium sulfate.Through detecting, one-level spe membrane water outlet ammonia nitrogen concentration drops to 2200mg/L, then through the processing of secondary spe membrane, ammonia nitrogen concentration drops to below 560mg/L, and through three grades of spe membrane processing, ammonia nitrogen concentration drops to below 6mg/L, and ammonia-nitrogen removal rate reaches 99.9%.Be greater than 99% by Using Multistage Membranes extraction ammonia-nitrogen removal rate, process water investment per ton every day and be not more than 20,000, direct operating cost is not more than 5 yuan.
Although embodiment of the present utility model is open as above, but it is not restricted to listed utilization in specification sheets and embodiment, it can be applied to the various fields of the present utility model that are applicable to completely, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend of describing.
Claims (10)
1. a Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water, is characterized in that, comprises,
Pretreater, offers the first water-in on described pretreater, enter described pretreater containing high ammonia-nitrogen wastewater by described the first water-in, and described pretreater is also provided with the first water outlet;
PH-meter, described pH-meter is connected with described the first water outlet by pipeline, is also provided with the second water outlet on described pH-meter;
Filtering treater, described filtering treater is connected with described the second water outlet by pipeline, and described filtering treater is also established the 3rd water outlet;
Using Multistage Membranes extractor, comprises one-level film abstractor, secondary film abstractor and three grades of film abstractors successively, and described one-level film abstractor is connected with described the 3rd water outlet; Between film abstractors at different levels, be connected by pipeline, and the interior spe membrane of all establishing, described spe membrane is separated described waste water and described extraction liquid, and described spe membrane put to described waste water and extract flow to parallel;
Biological synthesis treater, is connected respectively for passing into from described one-level film abstractor, secondary film abstractor and three grades of waste liquids that film abstractor flows out by pipeline with described one-level film abstractor, secondary film abstractor and three grades of film abstractors;
Wherein, in described Using Multistage Membranes extractor, every one-level film abstractor water outlet is equipped with switch valve for the switch to every one-level film abstractor pipeline being connected with subordinate film abstractor or the pipeline being connected with described biological synthesis treater.
2. a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water according to claim 1, is characterized in that, in described pretreater, establish grid or screen cloth, aperture is 2mm～6mm.
3. a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water according to claim 1, is characterized in that, establishes alkali lye adding device and pH detecting unit in described pH-meter.
4. a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water according to claim 1, is characterized in that, described strainer is cloth bag type or disc filter.
5. the Using Multistage Membranes of high ammonia nitrogen extraction biological synthesis treatment system in processing waste water according to claim 1, is characterized in that, described spe membrane mean pore size is 30-70nm.
6. the Using Multistage Membranes of high ammonia nitrogen extraction biological synthesis treatment system in processing waste water according to claim 5, is characterized in that, described spe membrane mean pore size is 50nm.
7. the Using Multistage Membranes of high ammonia nitrogen extraction biological synthesis treatment system in processing waste water according to claim 1, is characterized in that, described extraction liquid flows to contrary with described waste water in described Using Multistage Membranes treater.
8. a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water according to claim 1, it is characterized in that, in described Using Multistage Membranes extractor, every one-level film abstractor water outlet is also provided with automatic detection unit for detection of flowing out ammonia nitrogen concentration in waste water.
9. a kind of Using Multistage Membranes extraction biological synthesis treatment system of processing high ammonia nitrogen in waste water according to claim 1, it is characterized in that, described one-level film abstractor is provided with extract flow outlet, described extract flow exit is established ammonia nitrogen detector and is flowed to valve, and described extract flow exports and is connected respectively with the extraction liquid inflow pipeline of being located on described three grades of film abstractors containing ammonia nitrogen dope withdrawer.
10. the Using Multistage Membranes of high ammonia nitrogen extraction biological synthesis treatment system in processing waste water according to claim 1, is characterized in that, the water outlet of described three grades of film abstractors is also provided with except ammoniacal liquor collector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320554867.2U CN203602446U (en) | 2013-09-06 | 2013-09-06 | Multistage membrane extraction biological comprehensive treatment system for treating high ammonia nitrogen in waste water |
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| CN201320554867.2U CN203602446U (en) | 2013-09-06 | 2013-09-06 | Multistage membrane extraction biological comprehensive treatment system for treating high ammonia nitrogen in waste water |
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| CN201320554867.2U Expired - Fee Related CN203602446U (en) | 2013-09-06 | 2013-09-06 | Multistage membrane extraction biological comprehensive treatment system for treating high ammonia nitrogen in waste water |
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Granted publication date: 20140521 Termination date: 20190906 |