CN102863109B - Ammonia-nitrogen wastewater treatment method and ammonia-nitrogen wastewater treatment device - Google Patents
Ammonia-nitrogen wastewater treatment method and ammonia-nitrogen wastewater treatment device Download PDFInfo
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Abstract
The invention discloses an ammonia-nitrogen wastewater treatment method and an ammonia-nitrogen wastewater treatment device. The treatment method sequentially includes the steps of ammonia-nitrogen wastewater solution regulation, electrochemical reaction, blow-off treatment, breakpoint chlorination oxidation treatment and neutralizing treatment. An electrochemical reaction tank is partitioned into a cathode compartment and an anode compartment in the electrochemical reaction step, blow-off treatment is performed for wastewater solution generated in the cathode compartment, neutralizing treatment is performed for wastewater solution generated in the anode compartment and the wastewater solution subjected to blow-off treatment, and the breakpoint chlorination oxidation treatment step is arranged between the blow-off treatment and the neutralizing treatment. The ammonia-nitrogen wastewater treatment method and the ammonia-nitrogen wastewater treatment device have the advantages that the electrochemical reaction, blow-off treatment, breakpoint chlorination oxidation treatment and neutralizing treatment are organically combined, the ammonia-nitrogen wastewater treatment device is simple in structure, process coordination is reasonable, operating cost for ammonia-nitrogen wastewater treatment is reduced, and ammonia-nitrogen removal effect is good.
Description
Technical field
The present invention relates to a kind of waste water treatment process, be specifically related to a kind for the treatment of process and treatment unit thereof of ammonia nitrogen waste water.
Background technology
Development along with modern industry, the trade effluent producing in industrial production is more and more serious on the impact of environment, wherein a lot of industries produce and discharge various concentration nitrogen-containing wastewater, as industries such as chemical fertilizer, smelting, chemical industry, petrochemical industry, pharmacy, food-processing and refuse treatments.A large amount of ammonia nitrogen waste waters directly enter water body, not only cause body eutrophication, cause microorganism amount reproduction, and water body blackout is smelly, and by the difficulty and the cost that increase with water treatment.Fish 20 minutes in surpassing the water of 200 milligrams every liter containing ammonia nitrogen will be dead, and in tap water, ammonia nitrogen concentration exceeds standard and will human body be produced to the harm of long-term chronic.Ammonia nitrogen waste water has caused the concern of field of Environment Protection and various circles of society on the impact of environment, Environmental Protection in China department has strengthened the detection of ammonia nitrogen concentration in waste water and control in recent years, domestic the treatment process of ammonia nitrogen waste water has been carried out to a lot of research, at present, the treatment process of ammonia nitrogen waste water mainly contains bioremediation, physical treatment method, chemical treatment method.Wherein, bioremediation is mainly applicable to the nitrogen-containing wastewater that contains large amount of organic, comprises activated sludge process and artificial swamp method, and the shortcoming of bioremediation is long flow path, and reactor is large, often needs additional carbon, and energy consumption is large, and cost is high; Physical treatment method comprises stripping, flash distillation, membrane sepn etc., and the shortcoming of physical treatment method is that energy consumption is large, has secondary pollution, and water outlet ammonia nitrogen concentration is still higher; Chemical treatment method comprises ion-exchange, chemical precipitation, electrochemical treatment and break point chlorination method etc., and the shortcoming of chemical treatment method is to need dosage large, and cost is high, can produce obnoxious flavour.
The treatment process of various ammonia nitrogen waste waters of the prior art, respectively for different ammonia nitrogen waste water concentration, and in every kind for the treatment of process technique, for reaching good treatment effect, the energy consumption for the treatment of process is large, cost is high.
Summary of the invention
The object of the invention is to overcome above shortcoming, a kind for the treatment of process and treatment unit thereof of ammonia nitrogen waste water is provided, use this treatment process and treatment unit thereof, process in ammonia nitrogen waste water technique and greatly reduce energy consumption, saved cost, improved treatment effect.
Technical scheme of the present invention is:
A treatment process for ammonia nitrogen waste water, described treatment process in turn includes the following steps: regulate ammonia nitrogen waste water solution, electrochemical reaction, stripping processing, break point chlorination oxide treatment, neutralizing treatment;
Wherein, in described adjusting ammonia nitrogen waste water solution step, in ammonia nitrogen waste water solution, add ionogen, regulating chlorion in ammonia nitrogen waste water is 2:1-5:1 with the ratio of the concentration of ammonia nitrogen, and described ionogen is NaCl;
In described electrochemical reaction step, electrochemical reaction groove is divided into cathode compartment and anolyte compartment by ion-exchange membrane, the waste water solution generating in described cathode compartment carries out described stripping processing, and the waste water solution after the waste water solution generating in described anolyte compartment and described stripping are processed carries out neutralizing treatment;
Between described stripping processing and described neutralizing treatment, described break point chlorination oxidation treatment step is set, processes the negative electrode waste water solution after stripping is processed; Oxygenant in described break point chlorination oxidation treatment step is dioxide peroxide; The gas generating in described anolyte compartment is as the secondary oxidizer in described break point chlorination oxidation treatment step.
Further, described ion-exchange membrane is cationic exchange membrane or anionic exchange membrane.
Further, the waste water solution generating in described anolyte compartment carries out first carrying out described break point chlorination oxidation treatment step before neutralizing treatment.
Further, in described ammonia nitrogen waste water, chlorion is 4:1 with the ratio of the concentration of ammonia nitrogen.
A treatment unit for ammonia nitrogen waste water, described treatment unit comprises regulating tank, electrochemical reaction groove, stripping tower, the neutralizing well that pipeline connects successively;
In described electrochemical reaction groove, be provided with ion-exchange membrane, described ion-exchange membrane is divided into anolyte compartment and cathode compartment by electrochemical reaction groove; The first cathode solution transport pipe is set between described cathode compartment and described stripping tower; Between described anolyte compartment and described neutralizing well, be provided with anodic dissolution transport pipe;
Between described stripping tower bottom and described neutralizing well, be provided with the second cathode solution transport pipe;
Between described stripping tower and described neutralizing well, be provided with oxygenant filling apparatus, described oxygenant filling apparatus is communicated with described the second cathode solution transport pipe;
Top, described anolyte compartment is provided with gas collector, and described gas collector is communicated with described the second cathode solution transport pipe.
Further, described oxidation filling apparatus and described the second cathode solution transport pipe junction are the first tie point, on described the second cathode solution transport pipe, be provided with line mixer, described line mixer is arranged between described the first tie point and described neutralizing well.
The treatment process of ammonia nitrogen waste water provided by the invention and treatment unit thereof, compared with prior art, advantage is as follows:
1, reduce the energy consumption of processing ammonia nitrogen waste water technique, saved cost.The treatment process of ammonia nitrogen waste water provided by the invention, comprises and regulates ammonia nitrogen waste water solution, electrochemical reaction, stripping processing, break point chlorination oxide treatment, neutralizing treatment processing step; Wherein, regulate in ammonia nitrogen waste water solution step, in ammonia nitrogen waste water solution, add ionogen, regulating chlorion in ammonia nitrogen waste water is 2:1-5:1 with the ratio of the concentration of ammonia nitrogen, in solution, add chlorion, can improve the removal effect to ammonia nitrogen in electrochemical oxidation reactions; In electrochemical reaction step, electrochemical reaction groove is divided into cathode compartment and anolyte compartment by ion-exchange membrane, and the waste water solution generating in cathode compartment carries out stripping processing, and the waste water solution after the waste water solution generating in anolyte compartment and stripping are processed carries out neutralizing treatment; Between stripping processing and neutralizing treatment, break point chlorination oxidation treatment step is set, processes the negative electrode waste water solution after stripping is processed.
In ammonia nitrogen waste water treatment method provided by the invention and treatment unit, in electrochemical reaction groove, increase ion-exchange membrane, make electrochemical reaction groove be divided into anolyte compartment and cathode compartment, ion-exchange membrane makes generation electrodialysis in electrochemical reaction groove, make the neutral salt in waste water be converted into corresponding bronsted lowry acids and bases bronsted lowry, accelerate the speed of ionization reaction, greatly saved the cost of electrochemical reaction.
The treatment process of ammonia nitrogen waste water provided by the invention, in cathode compartment, ammonia nitrogen complex compound is ionized, waste strength raises, and solution ionization generates sodium hydroxide, the Ph value of solution in cathode compartment and temperature are raise, for stripping process provides good condition, reduced the energy consumption that the air-blowing of stripping process hollow enters, and this technique has reduced the Ph value regulating step of stripping process, save the consumption of Ph value conditioning agent, art breading cost.
In anolyte compartment, decompose and produce hydrogen ion, solution Ph value reduces, waste water solution after the waste water solution generating in anolyte compartment and stripping are processed carries out neutralizing treatment, compared with prior art, reduced the step that extra interpolation Ph value conditioning agent carries out neutralizing treatment, rationally utilize resource, reduced production cost.
In anolyte compartment, there is ionization reaction, generate chlorine, the dioxide peroxide adding in chlorine and break point chlorination oxidation processing technique combination, as oxygenant, further the ammonia nitrogen in the waste water solution of oxygenolysis after stripping is processed, makes the discharged wastewater met the national standard of processing.The treatment process of ammonia nitrogen waste water of the present invention, has reduced the addition as the dioxide peroxide of oxygenant, has saved cost.
The treatment process of ammonia nitrogen waste water provided by the invention, by electrochemical reaction, blow-off method, the combination of break point chlorination oxide treatment method, has brought into play the advantage of each treatment process, and each technique connects each other and complements one another, and greatly reduces energy consumption, has saved cost.
2, the treatment process of ammonia nitrogen waste water provided by the invention, has improved treatment effect.The treatment process of ammonia nitrogen waste water provided by the invention, by electrochemical reaction, blow-off method, the combination of break point chlorination oxide treatment method, ammonia nitrogen in the efficient decomposition oxidized portion of electrochemical reaction waste water solution, in cathode compartment, ammonia nitrogen complex compound is ionized, waste strength raises, and solution ionization generates sodium hydroxide, Ph value and the temperature of solution in cathode compartment are raise, ammonia nitrogen in solution is converted into free ammonia molecular conformation, strengthened its active and deviate from molecule power from liquid film, for stripping process provides good condition, strengthened stripping effect.
In ammonia nitrogen waste water treatment method provided by the invention, the waste water solution generating in anolyte compartment carries out first carrying out break point chlorination oxidation treatment step before neutralizing treatment, the ammonia nitrogen of the waste water solution further generating in oxidation anolyte compartment, further improve the treatment effect of ammonia nitrogen in waste water, guarantee the discharged wastewater met the national standard of final discharge.
The treatment process of ammonia nitrogen waste water provided by the invention and treatment unit thereof, be applicable to process ammonia nitrogen in waste water content and be not more than 500 milligrams/L, and the sewage ammonia nitrogen content of discharge is less than 15 milligrams/L after treatment, can realize qualified discharge.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow sheet of the first embodiment of the present invention;
Fig. 2 is the process flow sheet of the second embodiment of the present invention.
Reference numeral: 1-regulating tank, 2-electrochemical reaction Cao， 3-anolyte compartment, 4-cathode compartment, 5-ion-exchange membrane, 6-stripping tower, 7-oxygenant filling apparatus, 8-neutralizing well, 9-line mixer, 10-homogenization groove, 11-under meter, 12-gas collector, 13-anodic dissolution transport pipe, 14-the first cathode solution transport pipe, 15-the second cathode solution transport pipe.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
In conjunction with Fig. 1, a kind for the treatment of process of ammonia nitrogen waste water, in turn includes the following steps: regulate ammonia nitrogen waste water solution, electrochemical reaction, stripping processing, break point chlorination oxide treatment, neutralizing treatment;
Wherein, in described adjusting ammonia nitrogen waste water solution step, in ammonia nitrogen waste water solution, add ionogen, regulating chlorion in ammonia nitrogen waste water is 2:1 with the ratio of the concentration of ammonia nitrogen;
In electrochemical reaction step, electrochemical reaction groove 2 is divided into cathode compartment 4 and anolyte compartment 3 by ion-exchange membrane 5, the waste water solution of cathode compartment 3 interior generations carries out stripping processing, and the waste water solution after the waste water solution of anolyte compartment's 3 interior generations and stripping are processed carries out neutralizing treatment;
Between stripping processing and neutralizing treatment, break point chlorination oxidation treatment step is set, the cathode solution of carrying out after stripping processing first carries out carrying out neutralizing treatment after break point chlorination oxide treatment again.
Regulate in ammonia nitrogen waste water solution step, in the time of to the interior injection ammonia nitrogen waste water of regulating tank 1 solution, add ionogen, the concentration ratio of chlorion and ammonia nitrogen in adjusting waste water, in waste water solution, add chlorion, can improve the removal effect to ammonia nitrogen in electrochemical oxidation reactions; And along with the increase of chlorine ion concentration, the clearance of ammonia nitrogen improves clearly.Therefore, can regulate chlorion in ammonia nitrogen waste water is 3:1,4:1 or 5:1 with the ratio of the concentration of ammonia nitrogen.Preferably, chlorion is adjusted to 4:1 with the ratio of the concentration of ammonia nitrogen, in the waste water solution of this concentration, chlorion can cause a series of reaction after anode is oxidized, generate a large amount of active intermediate products, as chlorine, oxygen, hypochlorous acid or hypochlorite etc., these materials all have oxygenizement to ammonia nitrogen.Along with the further increase of chlorine ion concentration, the reactive chlorine compound of generation, not completely for being oxidized ammonia nitrogen, has reduced the treatment effect of oxidation ammonia nitrogen, and therefore, electrolytical best input amount is that chlorion is 4:1 with the ratio of the concentration of ammonia nitrogen.
Ionogen is preferably NaCl, when adding chlorion, can make at negative electrode, to generate sodium hydroxide in electrochemical reaction, improves the Ph value of cathode solution.
At the interior increase ion-exchange membrane 5 of electrochemical reaction groove 2, make electrochemical reaction groove be divided into anolyte compartment 3 and cathode compartment 4, ion-exchange membrane 5 makes generation electrodialysis in electrochemical reaction groove, make the neutral salt in waste water be converted into corresponding bronsted lowry acids and bases bronsted lowry, accelerate the speed of ionization reaction, greatly saved the cost of electrochemical reaction.In electrochemical reaction groove, in cathode compartment, ammonia nitrogen complex compound is ionized, waste strength raises, and solution ionization generates sodium hydroxide, the Ph value of solution in cathode compartment and temperature are raise, for stripping process provides good condition, reduced the energy consumption that the air-blowing of stripping process hollow enters, and this technique has reduced the Ph value regulating step of stripping process, save the consumption of Ph value conditioning agent, art breading cost.
In anolyte compartment, decompose and produce hydrogen ion, solution Ph value reduces, waste water solution after the waste water solution generating in anolyte compartment and stripping are processed carries out neutralizing treatment, compared with prior art, reduced the step that extra interpolation Ph value conditioning agent carries out neutralizing treatment, rationally utilize resource, reduced production cost.
Preferably, ion-exchange membrane 5 is cationic exchange membrane or anionic exchange membrane, and cationic exchange membrane or anionic exchange membrane can effectively be isolated the zwitterion in waste water solution, accelerates ionization rate.In the present embodiment, anode material is preferably graphite, and cathode material is elected titanium plate as.
In stripping treatment process, the ammonia nitrogen waste water that cathode compartment generates enters in stripping tower from bottom, and the flow direction of solution is contrary with the flow direction of air that carries out stripping reaction, formation convection current, and the contact area of solution and air is large, and stripping is effective.Preferably, waste water solution can be sprayed by shower nozzle, has increased the contact area of solution and air, further improves stripping effect.
Oxygenant in break point chlorination oxidation treatment step is dioxide peroxide, dioxide peroxide joins in oxygenant filling apparatus 7, and by pipeline, the solution producing with negative electrode mixes, realization is oxidized the cathode solution after stripping is processed, and reduces ammonia-nitrogen content in waste water solution.
In the present embodiment, dioxide peroxide is with after negative electrode waste water solution after stripping is processed mixes, by line mixer 9, the waste water solution after oxidation is injected to neutralizing well, line mixer 9 can make waste water and dioxide peroxide short mix, and accelerates the oxidizing reaction of dioxide peroxide to waste water.
In the present embodiment, the gas of anolyte compartment's 3 interior generations is as the secondary oxidizer in break point chlorination oxidation treatment step, and in electrochemical reaction process, anode generates chlorine and oxygen, chlorine as oxygenant, carries out oxide treatment to the ammonia nitrogen waste water after stripping is processed together with dioxide peroxide.The present invention makes full use of the product generating in ammonia nitrogen waste water technique, has reduced the add-on of oxygenant, cost-saving; Can reduce the treatment process of the toxic gas that electrochemical reaction is generated simultaneously.
When in waste water, ammonia nitrogen concentration is lower, the gas that can directly generate in anolyte compartment is the waste water solution through stripping processing as oxygenant oxidation separately, reduces to greatest extent the usage quantity of dioxide peroxide.
The waste water solution producing in the cathode compartment of processing through stripping is again oxidized the waste water solution producing in Hou，Yu anolyte compartment and carries out neutralizing treatment, makes treated rear discharged wastewater met the national standard.Complete in order to guarantee neutralization reaction, in treating processes, can increase suitable Ph value conditioning agent according to measuring Ph value, make waste water solution be neutral.Waste water solution after neutralizing treatment enters homogenization groove 10, after stirring, discharges.
The corresponding wastewater treatment equipment for the treatment of process of the ammonia nitrogen waste water providing with the present embodiment, comprises pipeline connects successively regulating tank 1, electrochemical reaction groove 2, stripping tower 6, neutralizing well 8;
In electrochemical reaction groove 2, be provided with ion-exchange membrane 5, ion-exchange membrane 5 is divided into anolyte compartment 3 and cathode compartment 4 by electrochemical reaction groove 2; The first cathode solution transport pipe 14 is set between cathode compartment 4 and stripping tower 6; Between anolyte compartment 3 and neutralizing well 8, be provided with anodic dissolution transport pipe 13;
Between stripping tower 6 bottoms and neutralizing well 8, be provided with the second cathode solution transport pipe 15;
Between stripping tower 6 and neutralizing well 8, be provided with oxygenant filling apparatus 7, oxygenant filling apparatus 7 is communicated with the second cathode solution transport pipe 15.
The treatment unit of the ammonia nitrogen waste water that the present embodiment provides, electrochemical reaction, stripping processing, break point chlorination oxide treatment, neutralizing treatment are organically combined, take electrochemical reaction as main body, and merged the advantage of stripping processing, break point chlorination method, make that ammonia nitrogen waste water treatment method energy consumption provided by the invention is low, cost is low, and improved the treatment effect of ammonia nitrogen.
In the present embodiment, 3 tops, anolyte compartment are provided with gas collector 12, gas collector 12 is communicated with the second cathode solution transport pipe 15, make in anolyte compartment chlorine that reaction generates, oxygen as secondary oxidizer, improve the oxide treatment effect of waste water solution, reduce the addition of oxygenant dioxide peroxide simultaneously, cost-saving.
In the present embodiment, oxidation filling apparatus 7 and the second cathode solution transport pipe 15 junctions are the first tie point, on the second cathode solution transport pipe 15, be provided with line mixer 9, line mixer 9 is arranged between the first tie point and neutralizing well 8, after line mixer is arranged on oxygenant interpolation program, make waste water and dioxide peroxide short mix, and accelerate the oxidizing reaction of dioxide peroxide to waste water.
In the present embodiment, on the first cathode solution transport pipe 14, be provided with transferpump, for delivery of the waste water solution that in cathode compartment, reaction generates, on the first cathode solution transport pipe 14, thermal insulation layer is preferably set, make the waste water solution heating up after electrolytic reaction directly carry out stripping reaction, improve the efficiency of stripping reaction.In stripping tower, the end of the first cathode solution transport pipe 14 is preferably provided with shower nozzle, increases the contact area of waste water solution and air, further improves the efficiency that stripping is processed.
In the present embodiment, on the connecting tube between regulating tank 1 and electrochemical reaction groove 2, be provided with under meter 11, for measuring wastewater treatment capacity, and according to the wastewater flow rate adding, regulate other parameters, effectively energy efficient and cost.
In conjunction with Fig. 2, a kind for the treatment of process of ammonia nitrogen waste water, in turn includes the following steps: regulate ammonia nitrogen waste water solution, electrochemical reaction, stripping processing, break point chlorination oxide treatment, neutralizing treatment;
Wherein, in described adjusting ammonia nitrogen waste water solution step, in ammonia nitrogen waste water solution, add ionogen, regulating chlorion in ammonia nitrogen waste water is 4:1 with the ratio of the concentration of ammonia nitrogen;
In electrochemical reaction step, electrochemical reaction groove is divided into cathode compartment and anolyte compartment by ion-exchange membrane, and the waste water solution generating in cathode compartment carries out stripping processing, and the waste water solution after the waste water solution generating in anolyte compartment and stripping are processed carries out neutralizing treatment; Ion-exchange membrane is preferably cationic exchange membrane or anionic exchange membrane;
Between stripping processing and neutralizing treatment, break point chlorination oxidation treatment step is set, the cathode solution of carrying out after stripping processing first carries out carrying out neutralizing treatment after break point chlorination oxide treatment again.
In the present embodiment, the waste water solution generating in anolyte compartment carries out first carrying out break point chlorination oxidation treatment step before neutralizing treatment, ammonia nitrogen in the waste water solution further generating in oxidation anolyte compartment, improve the treatment effect of ammonia nitrogen, be in the present embodiment, the waste water solution generating in the waste water solution generating in cathode compartment and anolyte compartment carries out respectively carrying out neutralizing treatment after break point chlorination oxide treatment.
The treatment unit corresponding with the treatment process of ammonia nitrogen waste water in the present embodiment, comprises pipeline connects successively regulating tank 1, electrochemical reaction groove 2, stripping tower 6, neutralizing well 8;
In electrochemical reaction groove 2, be provided with ion-exchange membrane 5, ion-exchange membrane 5 is divided into anolyte compartment 3 and cathode compartment 4 by electrochemical reaction groove 2; The first cathode solution transport pipe 14 is set between cathode compartment 4 and stripping tower 6; Between anolyte compartment 3 and neutralizing well 8, be provided with anodic dissolution transport pipe 13;
Between stripping tower 6 bottoms and neutralizing well 8, be provided with the second cathode solution transport pipe 15;
Between stripping tower 6 and neutralizing well 8, be provided with oxygenant filling apparatus 7, oxygenant filling apparatus 7 is communicated with the second cathode solution transport pipe 15.
Between anodic dissolution transport pipe 13 and neutralizing well 8, be provided with equally oxygenant filling apparatus 7, for being oxidized the ammonia nitrogen of the waste water solution generating in anolyte compartment, reduce final concentration of discharging ammonia nitrogen in waste water.After the line-blending of anodic dissolution transport pipe 13 and filling oxygenant, also can increase a line mixer, the oxidation rate of the ammonia nitrogen in the waste water solution of accelerating to generate in anolyte compartment.
Equally, 3 tops, the present embodiment Zhong， anolyte compartment are provided with gas collector 12, and gas collector 12 is communicated with the second cathode solution transport pipe 15; On connecting tube between regulating tank 1 and electrochemical reaction groove 2, be provided with under meter 11; After neutralizing well 8, be provided with homogenization groove 10, for making the waste water solution homogenizing after neutralization.
The treatment process of ammonia nitrogen waste water provided by the invention and treatment unit thereof, electrochemical reaction, stripping processing, break point chlorination oxide treatment, neutralizing treatment are organically combined, and simple in structure, technique coordinates rationally, reduced the running cost that ammonia nitrogen waste water is processed, and ammonia nitrogen removal is effective.The invention solves low-concentration ammonia-nitrogen in traditional method and process the problems such as energy consumption is high, running cost is high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing, be equal to replacement etc., within all should being included in protection scope of the present invention in protection scope of the present invention.
Claims (6)
1. a treatment process for ammonia nitrogen waste water, is characterized in that, described treatment process in turn includes the following steps: regulate ammonia nitrogen waste water solution, electrochemical reaction, stripping processing, break point chlorination oxide treatment, neutralizing treatment;
Wherein, in described adjusting ammonia nitrogen waste water solution step, in ammonia nitrogen waste water solution, add ionogen, regulating chlorion in ammonia nitrogen waste water is 2:1-5:1 with the ratio of the concentration of ammonia nitrogen, and described ionogen is NaCl;
In described electrochemical reaction step, electrochemical reaction groove is divided into cathode compartment and anolyte compartment by ion-exchange membrane, the waste water solution generating in described cathode compartment carries out described stripping processing, and the waste water solution after the waste water solution generating in described anolyte compartment and described stripping are processed carries out neutralizing treatment;
Between described stripping processing and described neutralizing treatment, described break point chlorination oxidation treatment step is set, processes the negative electrode waste water solution after stripping is processed; Oxygenant in described break point chlorination oxidation treatment step is dioxide peroxide; The gas generating in described anolyte compartment is as the secondary oxidizer in described break point chlorination oxidation treatment step.
2. the treatment process of ammonia nitrogen waste water according to claim 1, is characterized in that, described ion-exchange membrane is cationic exchange membrane or anionic exchange membrane.
3. the treatment process of ammonia nitrogen waste water according to claim 2, is characterized in that, the waste water solution generating in described anolyte compartment carries out first carrying out described break point chlorination oxidation treatment step before neutralizing treatment.
4. the treatment process of ammonia nitrogen waste water according to claim 1, is characterized in that, in described ammonia nitrogen waste water, chlorion is 4:1 with the ratio of the concentration of ammonia nitrogen.
5. a treatment unit for ammonia nitrogen waste water, is characterized in that, described treatment unit comprises regulating tank, electrochemical reaction groove, stripping tower, the neutralizing well that pipeline connects successively;
In described electrochemical reaction groove, be provided with ion-exchange membrane, described ion-exchange membrane is divided into anolyte compartment and cathode compartment by electrochemical reaction groove; The first cathode solution transport pipe is set between described cathode compartment and described stripping tower; Between described anolyte compartment and described neutralizing well, be provided with anodic dissolution transport pipe;
Between described stripping tower bottom and described neutralizing well, be provided with the second cathode solution transport pipe;
Between described stripping tower and described neutralizing well, be provided with oxygenant filling apparatus, described oxygenant filling apparatus is communicated with described the second cathode solution transport pipe;
Top, described anolyte compartment is provided with gas collector, and described gas collector is communicated with described the second cathode solution transport pipe.
6. ammonia nitrogen wastewater treatment device according to claim 5, it is characterized in that, described oxidation filling apparatus and described the second cathode solution transport pipe junction are the first tie point, on described the second cathode solution transport pipe, be provided with line mixer, described line mixer is arranged between described the first tie point and described neutralizing well.
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| CN106007179A (en) * | 2016-06-20 | 2016-10-12 | 昆山鸿福泰环保科技有限公司 | Technology achieving air stripping of ammonia nitrogen in waste water and recovering of ammonium sulfate |
| CN106431830B (en) * | 2016-08-11 | 2020-03-31 | 刘定忠 | Method and apparatus for decomposing tetramethylammonium hydroxide solution |
| CN108372189A (en) * | 2018-02-23 | 2018-08-07 | 南京林业大学 | The processing unit of solid waste and the treatment process of solid waste |
| CN109133442A (en) * | 2018-09-26 | 2019-01-04 | 上海力脉环保设备有限公司 | It is drained outside a kind of pair of breeding wastewater and propose the improved system of mark and its process |
| KR102044195B1 (en) * | 2018-10-11 | 2019-12-05 | 한국과학기술연구원 | Electrochemical water treatment apparatus for removing ammonia nitrogen and by-product of its oxidation |
| CN109320031A (en) * | 2018-10-19 | 2019-02-12 | 天津渤化永利化工股份有限公司 | A kind of method of ammonia II mud processing in alkali production process |
| EP4079688A1 (en) * | 2019-12-17 | 2022-10-26 | Kabushiki Kaisha Toshiba | Ammonia manufacturing device and ammonia manufacturing method |
| CN115571993A (en) * | 2021-07-01 | 2023-01-06 | 杭州国泰环保科技股份有限公司 | Ammonia nitrogen wastewater treatment device and treatment method |
| CN116675300A (en) * | 2023-07-18 | 2023-09-01 | 广东省农业科学院设施农业研究所 | Dual-circuit ammonia nitrogen removal method for industrial circulating water culture |
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