CN210480936U - Equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination - Google Patents
Equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination Download PDFInfo
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- CN210480936U CN210480936U CN201920671122.1U CN201920671122U CN210480936U CN 210480936 U CN210480936 U CN 210480936U CN 201920671122 U CN201920671122 U CN 201920671122U CN 210480936 U CN210480936 U CN 210480936U
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Abstract
The utility model discloses equipment for removing ammonia nitrogen and COD in wastewater of a thermal power plant in a synergic manner, which comprises a buffer water tank, an electrolysis device, a retention water tank and a plurality of valves which are communicated in sequence; the steady flow delivery pump is electrically connected with the frequency converter; a first ammonia nitrogen tester, a first COD tester and a temperature measuring instrument are arranged on a pipeline at the inlet of the electrolysis device; the electrolysis device is electrically connected with the rectifier cabinet; the top of the staying water tank is provided with an exhaust port; and a second ammonia nitrogen tester and a second COD tester are arranged on the pipeline at the outlet of the retention water tank. The utility model discloses an equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination has that the investment is little, take up an area of few, simple, the convenient operation's of installation characteristics, and its most outstanding advantage lies in: the purpose of removing ammonia nitrogen and COD in the wastewater of the thermal power plant in a synergic manner can be achieved by only one set of device, the efficiency is high, the energy consumption is low, the full recycling or the emission reduction can be realized, and the recycling or the treatment qualification at lower cost is realized.
Description
Technical Field
The utility model relates to a thermal power factory waste water treatment equipment field, concretely relates to equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination.
Background
In the production process of a thermal power plant, various waste water is produced, typically slag overflow, chemical waste water, reverse osmosis concentrated drainage, fine treatment regeneration waste water, desulfurization waste water and the like.
The source of the ammonia nitrogen wastewater of the coal-fired power plant comprises (1) carrying ammonia nitrogen in the desulfurization wastewater: the quality of the desulfurization wastewater can be different due to different coal types, limestone and desulfurization processes used by coal-fired power plants. However, in general, the desulfurized wastewater is weakly acidic, has a high salt content and contains a large amount of Cl < - >, SO42-Suspended matters and trace heavy metals, and also contains ammonia with certain concentration. The ammonia nitrogen concentration in the desulfurization wastewater is mainly influenced by the ammonia escape rate in the SCR denitration reactor, and the higher the ammonia escape rate is, the higher the ammonia nitrogen concentration in the desulfurization wastewater is. (2) Carrying ammonia nitrogen in the fine treatment regeneration wastewater: the anion resin and the cation resin are uniformly mixed in the storage tower of the regeneration system and then are sent into the fine treatment desalting device, and both the anion resin and the cation resin have certain exchange capacity, so that the fine treatment desalting device is determined to have certain periodic water production. When any one of the anion resin and the cation resin is invalid, the operator stops the corresponding fine treatment desalting device, and after the standby desalting device is put into operation, the invalid mixed resin is conveyed to an in-vitro regeneration device for separation and regeneration for recycling. After the cation and anion resin are failed, respectively using 4% hydrochloric acid solution and sodium hydroxide solution to make regeneration, and cation regeneration processIn the process, NH4+ is exchanged and enters wastewater along with the regenerated waste liquid, so ammonia nitrogen in the coal-fired power plant finely-treated regenerated wastewater comes from ammonia water added by a thermodynamic system, and the concentration of the ammonia nitrogen in the finely-treated regenerated wastewater is affected by factors such as periodic water production, resin performance and the like of a fertilization treatment mixed bed.
The existing forms of ammonia nitrogen in industrial wastewater are mainly NH3-N and NH4+ -N, the ammonia nitrogen and the NH are mutually converted, at present, the methods for removing the ammonia nitrogen from the industrial wastewater are mainly divided into a physical method, a chemical method, a physical and chemical method and a biological method, wherein the physical and chemical method comprises a stripping method, a chemical precipitation method, an adsorption method, a membrane method, a chemical oxidation method and the like, and the biological method mainly comprises a nitrification-denitrification method, an anaerobic ammonia oxidation method and the like.
In recent years, under the guidance of the guideline of 'classified collection and step reuse', the thermal power industry has formed various mature technical routes for treating most of wastewater, but there are tail end wastewater (ammonia nitrogen wastewater) represented by desulfurization wastewater and fine treatment regeneration wastewater, which has high salt content, complex water quality components, difficult treatment and reuse through a conventional treatment process, and can not realize the synergistic removal of ammonia nitrogen and COD in the wastewater of a thermal power plant, thus leading to complex procedures and high cost.
Therefore, a new method and equipment for treating tail end wastewater with high efficiency and low energy consumption are urgently needed, and the method and equipment can realize full recycling or reduce discharge, and can be recycled with lower cost or qualified in treatment.
Based on the above circumstances, the utility model provides an equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination.
The utility model discloses an equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination has that the investment is little, take up an area of few, simple, the convenient operation's of installation characteristics, and its most outstanding advantage lies in: the purpose of removing ammonia nitrogen and COD in the wastewater of the thermal power plant in a synergic manner can be achieved by only one set of device, the efficiency is high, the energy consumption is low, the full recycling or the emission reduction can be realized, and the recycling or the treatment qualification at lower cost is realized.
The utility model discloses a following technical scheme realizes:
a device for removing ammonia nitrogen and COD in wastewater of a thermal power plant in a synergic manner comprises a buffer water tank, an electrolysis device, a retention water tank and a plurality of valves which are sequentially communicated;
the buffer water tank is communicated with a wastewater feeding pipe; a steady flow delivery pump is arranged between the buffer water tank and the electrolysis device and is electrically connected with a frequency converter, and the frequency converter is used for adjusting the working frequency of the steady flow delivery pump and delivering the wastewater to the electrolysis device at a stable flow rate;
a first ammonia nitrogen tester, a first COD tester and a temperature measuring instrument are arranged on a pipeline at the inlet of the electrolysis device;
the electrolysis device is electrically connected with a rectifier cabinet, and the rectifier cabinet is used for converting 380V alternating current into direct current to pass through electrodes and adjusting the current passing through the electrodes and the voltage between the electrodes;
the top of the staying water tank is provided with an exhaust port;
and a second ammonia nitrogen tester and a second COD tester are arranged on the pipeline at the outlet of the retention water tank.
The utility model discloses an equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination has that the investment is little, take up an area of few, simple, the convenient operation's of installation characteristics, and its most outstanding advantage lies in: the purpose of removing ammonia nitrogen and COD in the wastewater of the thermal power plant in a synergic manner can be achieved by only one set of device, the efficiency is high, the energy consumption is low, the full recycling or the emission reduction can be realized, and the recycling or the treatment qualification at lower cost is realized.
Preferably, the electrolysis device comprises at least 2 electrolysis baths, the electrolysis baths are all cylindrical and are connected in series.
Preferably, the electrolysis device comprises 3 electrolysis baths, the electrolysis baths are all cylindrical and are connected in series.
Preferably, the bottom of the electrolysis device is provided with a first sewage discharge port, and the first sewage discharge port is communicated with the sewage tank through a pipeline.
Preferably, the buffer water tank is provided with a stirring device and an electric heater; the electric heater is electrically connected with the controller, and the controller is used for controlling the electric heater to perform constant-temperature heating or constant-power heating.
Preferably, the buffer water tank is provided with a feed inlet.
Preferably, the buffer water tank is provided with a chloride ion tester and a total soluble solid detector.
Preferably, the inlet and the outlet of the electrolysis device are respectively communicated with two ends of a motor pickling system to form a pickling loop; the motor pickling system comprises a pickling tank and a circulating pump; the pickling tank is used for preparing and storing an acid solution so as to carry out circulating pickling.
Preferably, the bottom of the pickling tank is provided with a second sewage draining outlet, and the second sewage draining outlet is communicated with the sewage tank through a pipeline.
Preferably, a flow meter is arranged on a pipeline at the outlet of the steady flow delivery pump.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model discloses an equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination has that the investment is little, take up an area of few, simple, the convenient operation's of installation characteristics, and its most outstanding advantage lies in: the purpose of removing ammonia nitrogen and COD in the wastewater of the thermal power plant in a synergic manner can be achieved by only one set of device, the efficiency is high, the energy consumption is low, the full recycling or the emission reduction can be realized, and the recycling or the treatment qualification at lower cost is realized.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
In the present invention, chemical Oxygen demand cod (chemical Oxygen demand) is a method for chemically measuring the amount of reducing substances to be oxidized in a water sample. The oxygen equivalent of a substance (typically an organic substance) that can be oxidized by a strong oxidizing agent in wastewater, wastewater treatment plant effluent, and contaminated water. In the research of river pollution and the property of industrial wastewater and the operation management of wastewater treatment plants, it is an important and relatively fast measurable organic pollution parameter, often denoted by the symbol COD.
For the said electrolytic device, the concrete structure, working principle and the control mode and space arrangement mode that may be involved, which are not specifically limited, are all the conventional choices in the field, belong to the prior art, and should not be regarded as the innovative point of the present invention, and for those skilled in the art, it is understandable that the present invention does not expand the detailed description further specifically.
The utility model discloses in technical characterstic such as converter, first ammonia nitrogen apparatus, first COD tester, temperature measurement appearance, rectifier cabinet, second ammonia nitrogen apparatus, second COD tester, controller, chloride ion apparatus, solubility total solid detector and flow meter (the utility model discloses a constitutional unit/component), if do not have special explanation, all obtain from conventional commercial route, or make with conventional method, its concrete structure, theory of operation and the control mode that probably involves, spatial arrangement mode adopt the conventional selection in this field can, should not be regarded as the utility model discloses an innovation point is located, to technical staff in this field, can understand, the utility model discloses a do not do further concrete expansion detailing.
Example 1:
as shown in fig. 1, the equipment for removing ammonia nitrogen and COD in wastewater of a thermal power plant in a synergic manner comprises a buffer water tank 1, an electrolysis device 2, a retention water tank 3 and a plurality of valves 8 which are sequentially communicated;
the buffer water tank 1 is communicated with a wastewater feeding pipe 11; a steady flow delivery pump 51 is arranged between the buffer water tank 1 and the electrolysis device 2, the steady flow delivery pump 51 is electrically connected with a frequency converter 511, and the frequency converter 511 is used for adjusting the working frequency of the steady flow delivery pump 51 and delivering the wastewater to the electrolysis device 2 at a stable flow rate;
a first ammonia nitrogen tester 61, a first COD tester 62 and a temperature measuring instrument 63 are arranged on a pipeline at the inlet of the electrolysis device 2;
the electrolysis device 2 is electrically connected with a rectifier cabinet 21, and the rectifier cabinet 21 is used for converting 380V alternating current into direct current to pass through electrodes and adjusting the current passing through the electrodes and the voltage between the electrodes;
the top of the staying water tank 3 is provided with an exhaust port 31;
and a second ammonia nitrogen tester 64 and a second COD tester 65 are arranged on the pipeline at the outlet of the retention water tank 3.
Example 2:
the patent technology of the utility model realizes the flexible degradation of ammonia nitrogen and COD in the tail end wastewater of the thermal power plant with less equipment investment and low running cost, and treats the wastewater to reach the purpose of the comprehensive wastewater discharge standard (GB 8978-1996). The novel electrolytic treatment equipment is researched and obtained aiming at the problem that the ammonia-containing regeneration wastewater and the desulfurization wastewater are difficult to treat in the fine treatment of the thermal power plant. Utilize electrolytic device to oxidize the ammonia nitrogen in the waste water into harmless nitrogen gas, also reduce total nitrogen concentration by a wide margin when reducing ammonia nitrogen concentration, can desorption COD in the waste water simultaneously. The method can be used for treating the finely-treated regenerated wastewater with ammonia nitrogen concentration of 15-1000 mg/L, and ensures that the final effluent concentration is less than 1 mg/L; can treat the desulfurization wastewater COD to ensure that the desulfurization wastewater COD reaches the discharge standard. The net reaction, which occurs predominantly under catalysis of chloride, is:
as shown in fig. 1, the equipment for removing ammonia nitrogen and COD in wastewater of a thermal power plant in a synergic manner comprises a buffer water tank 1, an electrolysis device 2, a retention water tank 3 and a plurality of valves 8 which are sequentially communicated;
the buffer water tank 1 has the functions of temporary storage and adjustment, and the chlorine content, The Dissolved Solids (TDS) and the temperature of the pretreated thermal power plant wastewater (containing ammonia nitrogen, organic matters and dissolved salts) can be adjusted in the buffer water tank 1 in advance.
The retention water tank 3 is provided to extend the reaction time and allow the oxidizing substances generated by electrolysis to continue to react with the target removed substances, thereby reducing the cost of wastewater treatment.
The buffer water tank 1 is communicated with a wastewater feeding pipe 11; a steady flow delivery pump 51 is arranged between the buffer water tank 1 and the electrolysis device 2, the steady flow delivery pump 51 is electrically connected with a frequency converter 511, and the frequency converter 511 is used for adjusting the working frequency of the steady flow delivery pump 51 and delivering the wastewater to the electrolysis device 2 at a stable flow rate;
a first ammonia nitrogen tester 61, a first COD tester 62 and a temperature measuring instrument 63 are arranged on a pipeline at the inlet of the electrolysis device 2;
the ammonia nitrogen concentration, COD and temperature on the pipeline at the inlet of the electrolysis device 2 can be conveniently and rapidly measured by the first ammonia nitrogen determinator 61, the first COD tester 62 and the temperature measurer 63 respectively.
The electrolysis device 2 is electrically connected with a rectifier cabinet 21, and the rectifier cabinet 21 is used for converting 380V alternating current into direct current to pass through electrodes and adjusting the current passing through the electrodes and the voltage between the electrodes;
the top of the staying water tank 3 is provided with an exhaust port 31;
the vent 31 is provided to facilitate the discharge or collection of hydrogen gas generated by the electrolysis reaction.
And a second ammonia nitrogen tester 64 and a second COD tester 65 are arranged on the pipeline at the outlet of the retention water tank 3.
The second ammonia nitrogen tester 64 and the second COD tester 65 can respectively and conveniently and rapidly test the ammonia nitrogen concentration and the COD of the pipeline at the outlet of the water tank 3.
Further, in another embodiment, the electrolysis device 2 comprises at least 2 electrolysis cells, and the electrolysis cells are all cylindrical and are connected in series.
Therefore, the treatment capacity of the electrolysis device 2 can be improved, ammonia nitrogen and COD in the wastewater of the thermal power plant are greatly reduced, the final effluent concentration is ensured to be less than 1mg/L, and the occupied area is reduced.
Further, in another embodiment, the electrolysis device 2 comprises 3 electrolysis cells, and the electrolysis cells are all cylindrical and are connected in series.
Therefore, the treatment capacity of the electrolysis device 2 can be improved, ammonia nitrogen and COD in the wastewater of the thermal power plant are greatly reduced, the final effluent concentration is ensured to be less than 1mg/L, and the occupied area is reduced; but also saves the cost and provides economic benefits.
Further, in another embodiment, the bottom of the electrolysis device 2 is provided with a first drain port 22, and the first drain port 22 is communicated with the wastewater tank 7 through a pipeline.
Therefore, the liquid in the electrolysis device 2 can be conveniently drained when needed, and the maintenance is convenient.
Further, in another embodiment, the buffer water tank 1 is provided with a stirring device 13 and an electric heater 14; the electric heater 14 is electrically connected to a controller 141, and the controller 141 is configured to control the electric heater to perform constant temperature heating or constant power heating.
This allows for constant temperature or constant power heating of the wastewater in the buffer tank 1 when required.
Further, in another embodiment, a feed inlet 12 is arranged on the buffer water tank 1.
Therefore, chlorine content, soluble solids (TDS) and temperature of the pretreated thermal power plant wastewater (containing ammonia nitrogen, organic matters and dissolved salts) in the buffer water tank 1 can be adjusted conveniently by adding chlorine salt and the like through the feed inlet 12.
Further, in another embodiment, the buffer water tank 1 is provided with a chloride ion meter 15 and a total dissolved solids detector 16.
The chloride ion tester 15 can conveniently and rapidly test the concentration of chloride radicals; the total dissolved solids detector 16 can conveniently and quickly measure TDS; and then, the adjustment of the chlorine content, The Dissolved Solids (TDS) and the temperature of the thermal power plant wastewater (containing ammonia nitrogen, organic matters and dissolved salts) pretreated in the buffer water tank 1 by adding chlorine salt and the like provides basis (addition amount).
Further, in another embodiment, the inlet and the outlet of the electrolyzer 2 are respectively communicated with two ends of a motor pickling system, so that a pickling loop can be formed; the motor pickling system comprises a pickling tank 4 and a circulating pump 52; the pickling tank 4 is used for preparing and storing an acid solution for cyclic pickling.
Thus, when the electrode is scaled, a proper amount of hydrochloric acid solution is prepared in the pickling tank 4, and the electrode can be conveniently subjected to circulating pickling through 1 circulating pump 52, so that the electrode activity is recovered; during acid washing, two valves at the inlet and the outlet of the electrolysis device 2 are closed to form an acid washing loop; at the same time the valve at the bottom of the pickling tank 4 is also closed.
Preferably, the circulating pump 52 is a horizontal corrosion-resistant centrifugal pump, and the pickling tank 4 is a horizontal cylindrical tank, and the volume of the tank and the total volume of the electrolytic tank are 1: 1.
Further, in another embodiment, the bottom of the pickling tank 4 is provided with a second sewage outlet 41, and the second sewage outlet 41 is communicated with the sewage tank 7 through a pipeline.
Therefore, the liquid in the pickling tank 4 can be conveniently drained when needed, and the waste liquid after the pickling is finished can be conveniently drained.
Further, in another embodiment, a flow meter is arranged on the pipeline at the outlet of the steady flow delivery pump 51.
Therefore, the flow on the pipeline at the outlet of the steady flow delivery pump 51 can be conveniently measured, a basis is provided for adjusting the working frequency of the steady flow delivery pump 51 through the frequency converter 511, and wastewater is better conveyed to the electrolysis device 2 at a stable flow (adjusted according to requirements).
According to the utility model discloses a description and attached drawing, the technical personnel in the field make or use very easily the utility model discloses a desorption thermal power factory waste water ammonia nitrogen and COD's equipment in coordination to can produce the positive effect that the utility model discloses record.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (10)
1. The utility model provides an equipment of ammonia nitrogen and COD in desorption thermal power factory waste water in coordination which characterized in that: comprises a buffer water tank (1), an electrolysis device (2), a retention water tank (3) and a plurality of valves (8) which are communicated in sequence;
the buffer water tank (1) is communicated with a wastewater feeding pipe (11); a steady flow delivery pump (51) is arranged between the buffer water tank (1) and the electrolysis device (2), the steady flow delivery pump (51) is electrically connected with a frequency converter (511), and the frequency converter (511) is used for adjusting the working frequency of the steady flow delivery pump (51) and delivering wastewater to the electrolysis device (2) at a stable flow rate;
a first ammonia nitrogen tester (61), a first COD tester (62) and a temperature measuring instrument (63) are arranged on a pipeline at the inlet of the electrolysis device (2);
the electrolysis device (2) is electrically connected with a rectifier cabinet (21), and the rectifier cabinet (21) is used for converting 380V alternating current into direct current to pass through electrodes and adjusting the current passing through the electrodes and the voltage between the electrodes;
the top of the staying water tank (3) is provided with an exhaust port (31);
and a second ammonia nitrogen tester (64) and a second COD tester (65) are arranged on the pipeline at the outlet of the retention water tank (3).
2. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: the electrolysis device (2) comprises at least 2 electrolysis baths which are all cylindrical and are connected in series.
3. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: the electrolysis device (2) comprises 3 electrolysis baths which are all cylindrical and are connected in series.
4. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: the bottom of the electrolysis device (2) is provided with a first sewage discharge port (22), and the first sewage discharge port (22) is communicated with the sewage tank (7) through a pipeline.
5. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: the buffer water tank (1) is provided with a stirring device (13) and an electric heater (14); the electric heater (14) is electrically connected with a controller (141), and the controller (141) is used for controlling the electric heater (14) to perform constant-temperature heating or constant-power heating.
6. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: the buffer water tank (1) is provided with a feed inlet (12).
7. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: and a chloride ion tester (15) and a total soluble solid detector (16) are arranged on the buffer water tank (1).
8. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: the inlet and the outlet of the electrolysis device (2) are respectively communicated with two ends of a motor pickling system to form a pickling loop; the motor pickling system comprises a pickling tank (4) and a circulating pump (52), wherein the pickling tank (4) is used for preparing and storing an acid solution so as to carry out circulating pickling.
9. The equipment for removing ammonia nitrogen and COD in wastewater of thermal power plant in coordination according to claim 8, characterized in that: the bottom of the pickling tank (4) is provided with a second sewage draining outlet (41), and the second sewage draining outlet (41) is communicated with the sewage tank (7) through a pipeline.
10. The equipment for removing ammonia nitrogen and COD in the wastewater of the thermal power plant in coordination according to claim 1, characterized in that: and a flow meter is arranged on a pipeline at the outlet of the steady flow delivery pump (51).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114656076A (en) * | 2022-04-11 | 2022-06-24 | 重庆远达烟气治理特许经营有限公司科技分公司 | Desulfurization wastewater treatment method and desulfurization wastewater treatment equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114656076A (en) * | 2022-04-11 | 2022-06-24 | 重庆远达烟气治理特许经营有限公司科技分公司 | Desulfurization wastewater treatment method and desulfurization wastewater treatment equipment |
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