CN214360477U - Waste water and waste gas combined treatment system for efficient decarbonization and denitrification - Google Patents
Waste water and waste gas combined treatment system for efficient decarbonization and denitrification Download PDFInfo
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- CN214360477U CN214360477U CN202022897165.7U CN202022897165U CN214360477U CN 214360477 U CN214360477 U CN 214360477U CN 202022897165 U CN202022897165 U CN 202022897165U CN 214360477 U CN214360477 U CN 214360477U
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Abstract
The utility model discloses a waste water and waste gas combined treatment system for high-efficiency decarbonization and denitrification, which comprises a water inlet pump, a carbon capture device, a middle water tank and an anaerobic ammonia oxidation reactor, wherein the carbon capture device comprises an anode chamber communicated with the water inlet pump through a water inlet pipe and a cathode chamber communicated with the middle water tank through a first water outlet pipe, the anode chamber and the cathode chamber are separated by an ion exchange resin layer, an anode plate electrically connected with a positive electrode of a power supply is arranged in the anode chamber, a cathode plate electrically connected with a negative electrode of the power supply is arranged in the cathode chamber, the bottom of the cathode chamber is also provided with an air inlet pipe, an air compressor is arranged on the air inlet pipe, and the top of the carbon capture device is provided with an air outlet pipe; the water outlet of the middle water tank is communicated with the bottom end of the anaerobic ammonia oxidation reactor through a second water inlet pipe, the air outlet pipe is communicated with the second water inlet pipe, the anaerobic ammonia oxidation reactor is an up-flow anaerobic sludge bed, and the top end of the anaerobic ammonia oxidation reactor is provided with a three-phase separator. The utility model discloses a joint treatment of waste water and waste gas.
Description
Technical Field
The utility model relates to a waste water and exhaust gas treatment technical field especially relates to a waste water and exhaust gas combined treatment system of high-efficient decarbonization denitrogenation.
Background
With the rapid development of economy and the rapid improvement of industrial level in China, a large amount of nitrogen-containing industrial wastewater is discharged into water bodies, so that serious problems of eutrophication of water bodies such as rivers and lakes, degradation of an ecological system and the like are caused; meanwhile, industrial production generates a large amount of waste gas, and the emission of carbon dioxide and nitric oxide aggravates the greenhouse effect and destroys the ecological environment.
At present, the most widely applied wastewater denitrification technology is a biological denitrification technology, and the removal of pollutants is realized by utilizing nitrogen source pollutants in wastewater generated by growth, metabolism and assimilation of nitrifying bacteria and denitrifying bacteria. Due to the self metabolic rate of microorganisms, the traditional biological denitrification technology has low treatment efficiency, large occupied area of structures and high operation cost. New biological denitrification technologies represented by anaerobic ammonia oxidation are receiving increasing attention. The anaerobic ammonium oxidation bacteria are autotrophic microorganisms, an organic carbon source is not needed for anaerobic ammonium oxidation denitrification, and organic matters, suspended matters and toxic substances in inlet water can interfere the subsequent anaerobic ammonium oxidation process, so that the industrial wastewater needs to be treated by organic carbon firstly. The factory flue gas contains a large amount of carbon dioxide and nitric oxide, special flue gas treatment processes such as an absorption method and an SCR (selective catalytic reduction) technology are needed, the treatment cost is increased, and meanwhile, carbon sources and nitrogen sources contained in the factory flue gas are wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a waste water and waste gas combined treatment system of high-efficient decarbonization denitrogenation to solve the problem that above-mentioned prior art exists, realize the combined treatment of waste water and waste gas.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a waste water and waste gas combined treatment system for high-efficient decarbonization and denitrification, including water inlet pump, carbon capture device, middle water tank and the anaerobic ammonia oxidation reactor that pipe connection in proper order, the carbon capture device is totally closed structure, the carbon capture device include through the inlet tube with the anode chamber of inlet pump intercommunication and through first outlet pipe with the cathode chamber of middle water tank intercommunication, the anode chamber with be separated by the ion exchange resin layer between the cathode chamber, be provided with the anode plate of being connected with the positive pole electricity of power in the anode chamber, be provided with the cathode plate with the negative pole electricity of power is connected in the cathode chamber, the bottom of cathode chamber still is provided with the intake pipe, be provided with the air compressor machine in the intake pipe, the top of carbon capture device is provided with the outlet duct; the bottom water outlet of the middle water tank is communicated with the bottom end of the anaerobic ammonia oxidation reactor through a second water inlet pipe, the air outlet pipe is communicated with the second water inlet pipe, the anaerobic ammonia oxidation reactor is an up-flow anaerobic sludge bed, and a three-phase separator is arranged at the top end of the anaerobic ammonia oxidation reactor.
Preferably, one end of the second water inlet pipe, which is close to the middle water tank, is provided with a lift pump, and the lift pump is used for lifting the outlet water of the middle water tank.
Preferably, an air pump is arranged on the air outlet pipe, and an ejector is arranged at one end, close to the second water inlet pipe, of the air outlet pipe.
Preferably, the three-phase separator comprises an overflow weir arranged at the top end of the anaerobic ammonia oxidation reactor, the top end of the three-phase separator is provided with an exhaust port, and the side part of the three-phase separator is connected with a second water outlet pipe.
Preferably, an ammonia nitrogen online monitoring device is arranged in the middle water tank.
Preferably, an NO on-line monitor is further arranged on the gas outlet pipe.
The utility model discloses for prior art gain following technological effect:
the utility model discloses a waste water and waste gas combined treatment system of high-efficient decarbonization denitrogenation has realized the combined treatment of waste water and waste gas. The utility model discloses a high-efficient decarbonization denitrogenation's waste water waste gas combined treatment system is through leading carbon capture device promptly MECC technologyCan effectively remove COD in the wastewater and realize the capture of CO2 in the waste gas. Experiments show that the MECC can capture over 95 percent of CO generated by biodegradation of organic matters in the process of removing the organic matters (the COD removal rate is more than 90 percent)2Simulated flue gas (CO) input to external source2The concentration is 5-15%), the carbon capture rate can reach 80-93%. The coulombic efficiency (the efficiency of converting organic matters into current) of the reaction is 80-82%, and the hydrogen production efficiency (the efficiency of converting current into hydrogen) of the cathode is 91-95%. The utility model discloses high-efficient decarbonization denitrogenation's waste water waste gas combined treatment system is through the monitoring to NO in the waste gas and the monitoring of ammonia nitrogen in the waste water, confirms suitable air water proportion and reactor dwell time to under the prerequisite of air water through ejector intensive mixing, obtained good nitrogen source pollutant and got rid of the effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a combined wastewater and waste gas treatment system for high-efficiency decarbonization and denitrogenation of the present invention;
wherein: 1. a water inlet pump; 2. a first water inlet pipe; 3. a carbon capture device; 4. an anode chamber; 5. a cathode chamber; 6. an anode plate; 7. a cathode plate; 8. a power source; 9. an ion exchange resin layer; 10. an air inlet pipe; 11. an air outlet pipe; 12. a first water outlet pipe; 13. an intermediate water tank; 14. an ammonia nitrogen online monitoring device; 15. a lift pump; 16. a second water inlet pipe; 17. an NO on-line monitor; 18. an ejector; 19. an anammox reactor; 20. a filler; 21. a three-phase separator; 22. an exhaust port; 23. an overflow weir; 24. and a second water outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing a waste water and waste gas combined treatment system of high-efficient decarbonization denitrogenation to solve the problem that above-mentioned prior art exists, realize the combined treatment of waste water and waste gas.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1: the embodiment provides a waste water and waste gas combined treatment system for efficient decarbonization and denitrogenation, which comprises a water inlet pump 1, a carbon capture device 3, an intermediate water tank 13 and an anaerobic ammonia oxidation reactor 19 which are sequentially connected through pipelines.
Wherein, carbon capture device 3 is totally closed structure, carbon capture device 3 includes the anode chamber 4 and the cathode chamber 5 through first outlet pipe 12 and middle water tank 13 intercommunication of inlet pump 1 intercommunication through the inlet tube, be separated by ion exchange resin layer 9 between anode chamber 4 and the cathode chamber 5, be provided with the anode plate 6 with the anodal electric connection of power 8 in the anode chamber 4, be provided with the negative plate 7 with the negative pole electric connection of power 8 in the cathode chamber 5, the bottom of cathode chamber 5 still is provided with intake pipe 10, be provided with the air compressor machine in the intake pipe 10, the top of carbon capture device 3 is provided with outlet duct 11.
The middle water tank 13 is used for adjusting water quality and water quantity, and an ammonia nitrogen online monitoring device 14 is arranged in the middle water tank 13. The bottom water outlet of the middle water tank 13 is communicated with the bottom end of the anaerobic ammonia oxidation reactor 19 through a second water inlet pipe 16, one end of the second water inlet pipe 16 close to the middle water tank 13 is provided with a lift pump 15, and the lift pump 15 is used for lifting the outlet water of the middle water tank 13. The outlet pipe 11 is communicated with a second inlet pipe 16. An air pump and an NO on-line monitor 17 are arranged on the air outlet pipe 11, and an ejector 18 is arranged at one end of the air outlet pipe 11 close to the second water inlet pipe 16. The gas in the gas outlet pipe 11 enters the second water inlet pipe 16 after passing through the ejector 18 under the pressurization of the water pump, so that uniform and fine bubbles are formed in the inlet water of the second water inlet pipe 16, and the wastewater in the second water inlet pipe 16 can be in full contact with and react with subsequent anaerobic ammonia oxidizing bacteria.
The anaerobic ammonia oxidation reactor 19 is an up-flow anaerobic sludge bed, a filler 20 with the filling rate of 30-40% is arranged in the anaerobic ammonia oxidation reactor, and anaerobic ammonia oxidation sludge is attached to the filler 20. The anaerobic ammonia oxidation sludge is rich in anaerobic ammonia oxidation bacteria, the anaerobic ammonia oxidation bacteria absorb ammonia nitrogen in the wastewater and NO in the waste gas, and nitrogen is generated under the self action of the anaerobic ammonia oxidation bacteria, so that nitrogen source pollutants in the wastewater and the waste gas are removed. The top of the anammox reactor 19 is provided with a three-phase separator 21. The three-phase separator 21 comprises an overflow weir 23 arranged at the top end of the anaerobic ammonia oxidation reactor 19, an exhaust port 22 is arranged at the top end of the three-phase separator 21, and a second water outlet pipe 24 is connected to the side part of the three-phase separator.
The working process of the high-efficiency decarbonization and denitrification wastewater and waste gas combined treatment system comprises the following steps:
after being pretreated, the wastewater firstly enters an anode chamber 4 in a carbon capture device 3(MECC) through a water inlet pump 1 and a first water inlet pipe 2, and the organic matters in the wastewater are degraded by using electroactive bacteria (EAB) growing on an anode plate 6 to generate electrons and H+(ii) a Simultaneously, industrial mineral waste is added into the anode chamber 4, and the industrial mineral waste is rich in H+Can dissolve the anode electrolyte to release metal ions (Ca)2+，Mg2+Etc.). The waste water then passes through the ion exchange resin layer 9 into the cathode chamber 5, while containing CO2The flue gas is introduced from an air inlet pipe 10 through an air compressor; the electrons are collected by the anode and transferred to the cathode plate 7 through an external circuit for the reduction of water to produce H2And OH-(ii) a The metal ions are reacted with OH during migration through the ion exchange resin layer 9 to the catholyte-Combined to form metal hydroxide for absorbing CO2Convert it into stable carbonate precipitate to achieve carbon capture. The effluent at the top of the carbon capture device 3 enters an intermediate water tank 13 through a first water outlet pipe 12, an ammonia nitrogen online monitoring device 14 is observed, the water quality and the water quantity in the intermediate water tank 13 are adjusted, and the effluent in the intermediate water tank 13 enters anaerobic ammonia oxidation through a second water outlet pipe 24 under the action of a lifting pump 15The anaerobic ammonia oxidizing bacteria in the anaerobic ammonia oxidizing reactor 19 absorb ammonia nitrogen in the wastewater and NO in the waste gas, and generate nitrogen through self action, so that nitrogen source pollutants in the wastewater and the waste gas are removed; the purified waste gas is discharged from the exhaust port 22, and the waste water flows up to the top, is subjected to mud-water separation by the overflow weir 23, and enters the second water outlet pipe 24 to be discharged.
In the description of the present invention, it should be noted that the terms "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. The utility model provides a waste water waste gas combined treatment system of high-efficient decarbonization denitrogenation which characterized in that: the carbon capture device is of a fully-closed structure and comprises an anode chamber communicated with the water inlet pump through a water inlet pipe and a cathode chamber communicated with the middle water tank through a first water outlet pipe, the anode chamber and the cathode chamber are separated through an ion exchange resin layer, an anode plate electrically connected with a positive electrode of a power supply is arranged in the anode chamber, a cathode plate electrically connected with a negative electrode of the power supply is arranged in the cathode chamber, an air inlet pipe is further arranged at the bottom of the cathode chamber, an air compressor is arranged on the air inlet pipe, and an air outlet pipe is arranged at the top of the carbon capture device; the bottom water outlet of the middle water tank is communicated with the bottom end of the anaerobic ammonia oxidation reactor through a second water inlet pipe, the air outlet pipe is communicated with the second water inlet pipe, the anaerobic ammonia oxidation reactor is an up-flow anaerobic sludge bed, and a three-phase separator is arranged at the top end of the anaerobic ammonia oxidation reactor.
2. The system for the combined treatment of wastewater and waste gas with high efficiency of decarburization and nitrogen removal as claimed in claim 1, wherein: the second inlet tube is close to the one end of middle water tank is provided with the elevator pump, the elevator pump is used for right the play water of middle water tank promotes.
3. The system for the combined treatment of wastewater and waste gas with high efficiency of decarburization and nitrogen removal as claimed in claim 2, wherein: an air pump is arranged on the air outlet pipe, and an ejector is arranged at one end, close to the second water inlet pipe, of the air outlet pipe.
4. The system for the combined treatment of wastewater and waste gas with high efficiency of decarburization and nitrogen removal as claimed in claim 1, wherein: the three-phase separator comprises an overflow weir arranged at the top end of the anaerobic ammonia oxidation reactor, an exhaust port is arranged at the top end of the three-phase separator, and the side part of the three-phase separator is connected with a second water outlet pipe.
5. The system for the combined treatment of wastewater and waste gas with high efficiency of decarburization and nitrogen removal as claimed in claim 1, wherein: and an ammonia nitrogen online monitoring device is arranged in the middle water tank.
6. The system for the combined treatment of wastewater and waste gas with high efficiency of decarburization and nitrogen removal as claimed in claim 1, wherein: and the gas outlet pipe is also provided with an NO on-line monitor.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112520838A (en) * | 2020-12-04 | 2021-03-19 | 北京交通大学 | Waste water and waste gas combined treatment system for efficient decarbonization and denitrification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112520838A (en) * | 2020-12-04 | 2021-03-19 | 北京交通大学 | Waste water and waste gas combined treatment system for efficient decarbonization and denitrification |
| CN112520838B (en) * | 2020-12-04 | 2024-08-13 | 北京交通大学 | Wastewater and waste gas combined treatment system for efficient decarburization and nitrogen removal |
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