Combined treatment device and system for acid mine wastewater and municipal sludge
Through the joint treatment device of acidic mine wastewater and urban sludge, acidification and pyrolytics are used to generate biogas to convert them into energy, solving the problem of efficient and environmentally friendly joint treatment, realizing resource recycling and energy regeneration, and achieving the "dual carbon" goal.
Patent Information
- Application Number
- CN202422494517.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In the prior art, the treatment cost of acidic mine wastewater and urban sludge is high and there is a risk of secondary pollution. The cost of disposing of residual sludge in the sewage treatment plant is high. How to achieve efficient and environmentally friendly joint treatment has become a problem.
The acidic mine wastewater is mixed with urban sludge through a mixing pretreatment unit, and is acidified and thermohydrolyzed. After the biogas is generated, it is converted into electricity and thermal energy. It combines the precipitation tank and an anaerobic ammonia oxidation reactor to remove heavy metals and phosphorus, and realizes resource recovery and energy regeneration.
The coordinated treatment of acidic mine wastewater and urban sludge has been achieved, the treatment costs are reduced, useful resources are recycled, and renewable energy has been generated, helping to achieve the "dual carbon" goal and the "waste-free city" concept.
Smart Images
Figure CN223292407U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of pollutant purification, and in particular to a device and system for the combined treatment of acid mine wastewater and municipal sludge. Background Art
[0002] Acidic mine drainage has the characteristics of low pH value, high concentration of sulfate, soluble heavy metal ions, etc. Direct discharge will cause serious pollution to water bodies, damage the ecological environment, and endanger the health of surrounding residents.
[0003] Currently, the methods used to treat acid mine drainage (AMD) domestically and internationally include neutralization precipitation, sulfide precipitation, redox treatment, wetland treatment, and microbial treatment. However, chemical precipitation produces a large amount of waste, which can easily lead to secondary pollution. Wetland treatment requires a large area, and its treatment efficiency, like microbial treatment, is significantly affected by the environment. Consequently, the application of these methods is limited. Furthermore, wastewater treatment plants generate a large amount of excess sludge, the treatment and disposal costs of which currently account for 50%-60% of the plant's overall operating costs. Proper treatment and disposal of this sludge has become a hot topic in the environmental field. Utility Model Content
[0004] In view of this, the purpose of the present invention is to provide a device and system for the combined treatment of acid mine wastewater and municipal sludge.
[0005] In a first aspect, an embodiment of the present invention provides a combined treatment device for acid mine wastewater and municipal sludge, comprising:
[0006] A mixing pretreatment unit, the inlet of which is connected to the acid mine drainage source and the secondary sedimentation tank, is used to mix the acid mine drainage and municipal sludge;
[0007] An energy recovery unit, including a digester, for digesting the mixed pre-treated sludge to produce biogas;
[0008] An energy utilization unit, one end of which is connected to the energy regeneration unit, and the other end of which is connected to the mixed pretreatment unit and the mainstream treatment unit and the side stream treatment unit in the urban sewage treatment system, and is used to convert the biogas generated by the energy regeneration unit into electrical energy and thermal energy, and to provide energy for the mixed pretreatment unit, the mainstream treatment unit, and the side stream treatment unit;
[0009] The waste liquid recycling unit, including a sedimentation tank, is used to deeply treat the waste liquid generated by the mixed pretreatment unit and the energy regeneration unit, and to classify and recover useful resources.
[0010] In combination with the first aspect, the mixed pretreatment unit includes: an acidification tank and a thermal hydrolyzer connected in sequence; the inlet of the acidification tank is connected to the source of acid mine wastewater, and is also connected to the outlet of the secondary sedimentation tank in the mainstream treatment unit through a pipeline; the outlet of the acidification tank and the outlet of the thermal hydrolyzer are both connected to the first inlet of the sedimentation tank; the outlet of the thermal hydrolyzer is also connected to the inlet of the digester.
[0011] In conjunction with the first aspect, the energy utilization unit includes: a methane storage tank and a cogeneration device;
[0012] The inlet end of the methane storage tank is connected to the digester, and the outlet end of the methane storage tank is connected to the cogeneration device. The cogeneration device is also connected to the thermal hydrolyzer, the mainstream treatment unit, and the side stream treatment unit.
[0013] In combination with the first aspect, the second inlet of the sedimentation tank is connected to the digester; the third inlet of the sedimentation tank is connected to the sodium sulfide storage tank; the outlet of the sedimentation tank is connected to the anaerobic ammonium oxidation reactor and the dryer in the side stream treatment unit; and the outlet end of the anaerobic ammonium oxidation reactor is connected to the dryer.
[0014] In combination with the first aspect, a first water quality meter is installed in the acidification tank, and the first water quality meter is used to measure the phosphorus concentration and pH value in the acidification tank.
[0015] In combination with the first aspect, temperature controllers are installed in both the thermal hydrolyzer and the digester; a pressure controller is also installed in the thermal hydrolyzer.
[0016] In combination with the first aspect, an acid-base regulating device is also installed in the digester.
[0017] In combination with the first aspect, a second water quality meter is installed in the sedimentation tank, and the second water quality meter is used to measure the ammonia nitrogen concentration, sulfate concentration and pH value in the sedimentation tank.
[0018] In combination with the first aspect, a third water quality meter is installed in the anaerobic ammonium oxidation reactor, and the third water quality meter is used to measure the pH value, ORP value, temperature value, and ammonia nitrogen concentration, nitrite nitrogen concentration, nitrate nitrogen concentration, and sulfate concentration in the anaerobic ammonium oxidation reactor.
[0019] In a second aspect, the present application provides a system for the combined treatment of acid mine drainage and municipal sludge, comprising the above-mentioned combined treatment device for acid mine drainage and municipal sludge.
[0020] The embodiments of the utility model bring the following beneficial effects: The combined treatment device and system for acid mine wastewater and municipal sludge provided in the present application, by pre-treating the discarded acid mine wastewater with municipal sludge before sewage treatment and sludge digestion, can not only recover useful resources from the acid mine wastewater and improve its biodegradability, but also more easily produce biogas, thereby realizing waste utilization and energy regeneration of municipal sludge. Subsequently, biogas is used as raw material for energy utilization, and is converted into electric energy and thermal energy that are more easily utilized by the system, thereby realizing the coordinated management of acid mine wastewater and residual sludge, helping to achieve the goals of "dual carbon" and "zero-waste city", and actually practicing the green, environmentally friendly and efficient ecological concept.
[0021] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.
[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative work.
[0024] Figure 1 This is a schematic diagram of the structural principle of the combined treatment device for acid mine wastewater and municipal sludge provided in an embodiment of the present application.
[0025] The reference numerals are as follows:
[0026] 1-Acidification tank, 2-Thermal hydrolyzer, 3-Sedimentation tank, 4-Sodium sulfide storage tank, 5-Anaerobic ammonium oxidation reactor, 6-Digester, 7-Dryer, 8-Storage room, 9-Methane storage tank, 10-Cogeneration unit. DETAILED DESCRIPTION
[0027] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.
[0028] To facilitate understanding of this embodiment, the following is a brief introduction to the technologies involved in this application.
[0029] Acid mine drainage (AMD) is primarily formed by the oxidation of reduced sulfide minerals by air, precipitation, and microorganisms during mining, transportation, beneficiation, waste rock discharge, and tailings storage. AMM Drainage is a high-volume, low-pH, and contains high concentrations of sulfate and soluble heavy metal ions.
[0030] After introducing the technical terms involved in this application, the application scenarios and design concepts of the embodiments of this application are briefly introduced.
[0031] In the prior art, the treatment of acid mine drainage and the treatment of residual urban sludge generated by urban sewage treatment are independent of each other, resulting in high treatment costs.
[0032] Based on this, an embodiment of the present application provides a device and system for the combined treatment of acid mine wastewater and municipal sludge.
[0033] Example 1
[0034] The present application provides a combined treatment device for acid mine wastewater and municipal sludge, comprising: a mixed pretreatment unit, an energy regeneration unit, an energy utilization unit and a waste liquid recycling unit.
[0035] The mixing pretreatment unit has an inlet connected to the acid mine drainage source and the secondary sedimentation tank, and is used to mix acid mine drainage and municipal sludge.
[0036] The energy regeneration unit includes a digester for digesting the mixed pre-treated sludge to generate biogas.
[0037] The energy utilization unit is connected to the energy regeneration unit at one end and to the mixed pretreatment unit and the mainstream treatment unit and side stream treatment unit in the urban sewage treatment system at the other end. It is used to convert the biogas generated by the energy regeneration unit into electrical energy and thermal energy, and to provide energy for the mixed pretreatment unit, the mainstream treatment unit and the side stream treatment unit.
[0038] The waste liquid recycling unit, including a sedimentation tank, is used to deeply treat the waste liquid generated by the mixed pretreatment unit and the energy regeneration unit, and to classify and recover useful resources.
[0039] The combined treatment device and system for acid mine drainage and municipal sludge provided in this application, by pre-treating the discarded acid mine drainage with municipal sludge before sewage treatment and sludge digestion, can not only recover useful resources from the acid mine drainage and improve its biodegradability, but also more easily produce biogas. The biogas is then used as energy for energy utilization, converting it into more easily usable electric energy and thermal energy for this system, thereby realizing the coordinated management of acid mine drainage and residual sludge, helping to achieve the goals of "dual carbon" and "zero-waste city", and effectively practicing the green, environmentally friendly and efficient ecological concept.
[0040] In combination with the first aspect, the mixed pretreatment unit comprises: an acidification tank 1 and a thermal hydrolyzer 2 connected in sequence; Figure 1 As shown, the inlet of the acidification tank 1 is connected to the source of acid mine wastewater and is also connected to the outlet of the secondary sedimentation tank through a pipeline; the outlet of the acidification tank 1 and the outlet of the thermal hydrolyzer 2 are both connected to the first inlet of the sedimentation tank 3; the outlet of the thermal hydrolyzer 2 is also connected to the inlet of the digester 6.
[0041] In this embodiment, acid mine wastewater and municipal sludge are transported to an acidification tank 1 for mixing. The municipal sludge is acidified by the acid mine wastewater to release heavy metals and phosphorus in the municipal sludge. When the phosphorus release rate curve shows an inflection point, most of the phosphate and iron can be released, and the phosphate release rate can reach 90%, and the iron release rate can reach 95%. At this time, the acidified sludge is dehydrated to a moisture content of 80%-85% and then transported to a thermal hydrolyzer. The resulting dehydrated liquid is then sent to a sedimentation tank 3, wherein the main components of the dehydrated liquid are ferrous iron, sulfate, heavy metals, phosphorus, etc.
[0042] The acidified sludge is thermally hydrolyzed in the thermal hydrolyzer 2, the reaction temperature is controlled at 150-170°C, the reaction pressure is controlled at 0.5-0.8 MPa, and the reaction time is controlled at 30 minutes. The thermal hydrolyzed liquid is sent to the sedimentation tank 3. The thermal hydrolyzed sludge is diluted and cooled to a moisture content of 90%-95% and a temperature of about 50-55°C, and then sent to the digester 6;
[0043] The target of high-temperature thermal hydrolysis is dewatered sludge with high solid content (solid content 15% to 20%). High-temperature thermal hydrolysis can further release organic phosphorus, improve the volume utilization rate of the sludge anaerobic digester, the organic matter degradation rate and gas production of anaerobic digestion, and at the same time, through high-temperature and high-pressure pretreatment, improve the sanitary properties of sludge and the dewatering properties of biogas residue, further reduce the moisture content of biogas residue, and facilitate the resource utilization of biogas residue after anaerobic digestion.
[0044] In this application, a sodium sulfide storage tank 4 and a digester 6 are controlled by a PLC to add sodium sulfide and digestate to a sedimentation tank 3 at a constant rate and in a quantitative manner, removing heavy metals, phosphorus, and ferrous iron through batch precipitation. The tailwater from the sedimentation tank 3 is then fed to the anaerobic ammonium oxidation reactor 5 in the sidestream process of the municipal wastewater treatment plant.
[0045] In the above-mentioned batch precipitation removal step, first, Na2S is added to the sedimentation tank 3 until the precipitation does not increase, and the sediment is discharged; digestion liquid is added to the sedimentation tank 3 to pH = 3, and then Na2S is added until the precipitation does not increase, and the sediment is discharged; digestion liquid is added to the sedimentation tank 3 to pH = 5-5.5, and then Na2S is added until the precipitation does not increase, and the sediment is discharged. At this point, the heavy metals are basically precipitated in the form of sulfides; digestion liquid is added to the sedimentation tank 3 to pH = 6-8, until the precipitation does not increase, and the sediment is discharged. At this time, FeP is basically precipitated and the recovery rate can reach 95%; digestion liquid is added to the sedimentation tank to pH = 8.5-10, until the precipitation does not increase, and the sediment is discharged. At this time, ferrous hydroxide is basically precipitated. The above precipitates are all dried at 30°C in the dryer 7 and sent to the storage room 8 for storage; the tail water of the sedimentation tank 3 mainly consists of ammonia nitrogen and sulfate.
[0046] Alternatively, heavy metals can be removed as hydroxides by increasing the pH; the remaining iron can also be returned directly to the STP for phosphate precipitation.
[0047] Afterwards, the tail water produced in the sedimentation tank 3 is transported to the anaerobic ammonium oxidation reactor 5, where a sulfate-type anaerobic ammonium oxidation reaction occurs. After the sludge is separated by the cyclone separator, the anaerobic ammonium oxidation granular sludge returns to the anaerobic ammonium oxidation reactor 5, and the sulfur element is dried at 30°C in the dryer 7 and then sent to the storage room 8 for storage.
[0048] Among them, the conditions for the sulfate-type anaerobic ammonium oxidation reaction are: pH is controlled at 7.0-8.5, the molar ratio of ammonia nitrogen and sulfate is controlled at 2, the temperature is controlled at 25-37°C, and the ORP is controlled at -150mV>ORP>-300mV.
[0049] In combination with the first aspect, the energy utilization unit includes: a methane storage tank 9 and a cogeneration device 10.
[0050] The inlet end of the methane storage tank 9 is connected to the digester 6, and the outlet end of the methane storage tank 9 is connected to the cogeneration device 10. The cogeneration device 10 is also connected to the thermal hydrolyzer 2 and the mainstream processing unit and the side stream processing unit.
[0051] Thermal hydrolysis sludge undergoes anaerobic digestion in digester 6, with digestion gas collected in methane storage tank 9. The digested sludge is dehydrated to a moisture content of 40%-60% via a plate-and-frame dehydration system and distributed to surrounding farmland. The digestate is then sent to sedimentation tank 3, characterized by high ammonia nitrogen, high pH, and low COD. Anaerobic digestion conditions include a moderate temperature of 35-40°C, a pH maintained between 6.8 and 7.5, a digestion time of approximately 15-18 days, and a sludge feed rate of 5%-12%. An activated carbon purification unit (not shown) is installed at the front of methane storage tank 9, reducing the methane content of the digestion gas to 60%-70% after purification. Typically, the biogas produced by sludge digestion contains a high H2S content, leading to high operating costs for subsequent biogas desulfurization. However, the acidification of acid mine wastewater can lead to the incorporation of iron ions into the sludge, which effectively inhibits H2S from escaping from the biogas. Therefore, this process can reduce the H2S content in biogas without setting up an iron salt dosing system in the heat exchange workshop.
[0052] Afterwards, methane is used as raw material to convert it into electricity and heat with a production efficiency of 40%-60%. It can be used to provide heat and electricity to the mainstream process, side stream process and thermal hydrolysis process of urban domestic sewage, realizing energy regeneration.
[0053] In combination with the first aspect, the second inlet of the sedimentation tank 3 is connected to the digester 6; the third inlet of the sedimentation tank 3 is connected to the sodium sulfide storage tank 4; the outlet of the sedimentation tank 3 is connected to the anaerobic ammonium oxidation reactor 5 and the dryer 7 in the side stream treatment unit; the outlet end of the anaerobic ammonium oxidation reactor 5 is connected to the dryer 7.
[0054] The dryer 7 dries the sediment and the products of the anaerobic ammonium oxidation reaction for storage. The dryer 7 can be set in the storage room 8 or can be independent of the storage room 8 and set at the front end of the storage room 8.
[0055] In combination with the first aspect, a first water quality meter is installed in the acidification tank 1 , and the first water quality meter is used to measure the phosphorus concentration and pH value in the acidification tank 1 .
[0056] The first water quality meter monitors the phosphorus concentration and pH of the mixture of AMD and municipal sludge in real time. Multiple experiments have shown that the phosphorus release rate and phosphorus concentration in the mixture increase rapidly within the pH range of 3-4. At a pH of 2, phosphorus release peaks and the release rate shows an inflection point. Because AMD is highly acidic, it can be used to acidify municipal sludge, achieving waste treatment with waste. This reduces treatment costs compared to traditional methods of independently treating AMD and municipal sludge.
[0057] In combination with the first aspect, temperature controllers are installed in both the thermal hydrolyzer and the digester.
[0058] The temperature controller is used to control the reaction temperature in the thermal hydrolyzer at 150-170°C and the reaction temperature in the digester at 35-40°C.
[0059] In combination with the first aspect, a pressure controller is also installed in the thermal hydrolyzer.
[0060] The reaction pressure in the thermal hydrolyzer is controlled at 0.5-0.8Mpa by a pressure controller.
[0061] In combination with the first aspect, an acid-base regulating device is also installed in the digester.
[0062] The pH in the digester is controlled and maintained at 6.8-7.5 through an acid-base regulating device.
[0063] In combination with the first aspect, a second water quality meter is installed in the sedimentation tank 3 , and the second water quality meter is used to measure the ammonia nitrogen concentration, sulfate concentration and pH value in the sedimentation tank 3 .
[0064] In combination with the first aspect, a third water quality meter is installed in the anaerobic ammonium oxidation reactor 5, and the third water quality meter is used to measure the pH value, ORP value, temperature value, and ammonia nitrogen concentration, nitrite nitrogen concentration, nitrate nitrogen concentration, and sulfate concentration in the anaerobic ammonium oxidation reactor 5.
[0065] In a second aspect, the present application provides a system for the combined treatment of acid mine drainage and municipal sludge, comprising the above-mentioned combined treatment device for acid mine drainage and municipal sludge.
[0066] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems and devices can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.
[0067] In addition, in the description of the embodiments of this application, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0068] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
[0069] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0070] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art who is familiar with the technical field can still modify the technical solutions described in the above embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. A combined treatment device for acid mine wastewater and municipal sludge, characterized in that: include: A mixing pretreatment unit, the inlet of which is connected to the acid mine drainage source and the secondary sedimentation tank, is used to mix the acid mine drainage and municipal sludge; An energy recovery unit, including a digester, for digesting the mixed pre-treated sludge to produce biogas; An energy utilization unit, one end of which is connected to the energy regeneration unit, and the other end of which is connected to the mixed pretreatment unit and the mainstream treatment unit and the side stream treatment unit in the urban sewage treatment system, and is used to convert the biogas generated by the energy regeneration unit into electrical energy and thermal energy, and to provide energy for the mixed pretreatment unit, the mainstream treatment unit, and the side stream treatment unit; The waste liquid recycling unit includes a sedimentation tank, which is used to deeply treat the waste liquid generated by the mixed pretreatment unit and the energy regeneration unit, and to classify and recover useful resources.
2. The device according to claim 1, characterized in that The hybrid pretreatment unit comprises: an acidification tank and a thermal hydrolyzer connected in sequence; The inlet of the acidification tank is connected to the source of acidic mine wastewater and is also connected to the outlet of the secondary sedimentation tank in the mainstream treatment unit through a pipeline; the outlet of the acidification tank and the outlet of the thermal hydrolyzer are both connected to the first inlet of the sedimentation tank; the outlet of the thermal hydrolyzer is also connected to the inlet of the digester.
3. The device according to claim 2, characterized in that The energy utilization unit includes: a methane storage tank and a cogeneration device; The inlet end of the methane storage tank is connected to the digester, and the outlet end of the methane storage tank is connected to the cogeneration device. The cogeneration device is also connected to the thermal hydrolyzer, the mainstream processing unit, and the side stream processing unit.
4. The device according to claim 1, characterized in that The second inlet of the sedimentation tank is connected to the digester; the third inlet of the sedimentation tank is connected to the sodium sulfide storage tank; the outlet of the sedimentation tank is connected to the anaerobic ammonium oxidation reactor and the dryer in the side stream treatment unit; the outlet end of the anaerobic ammonium oxidation reactor is connected to the dryer.
5. The device according to claim 2, characterized in that A first water quality meter is installed in the acidification tank, and the first water quality meter is used to measure the phosphorus concentration and pH value in the acidification tank.
6. The device according to claim 2, characterized in that Temperature controllers are installed in both the thermal hydrolyzer and the digester; a pressure controller is also installed in the thermal hydrolyzer.
7. The device according to claim 1, characterized in that An acid-base regulating device is also installed in the digester.
8. The device according to claim 1, characterized in that A second water quality meter is installed in the sedimentation tank, and the second water quality meter is used to measure the ammonia nitrogen concentration, sulfate concentration and pH value in the sedimentation tank.
9. The device according to claim 4, characterized in that A third water quality meter is installed in the anaerobic ammonium oxidation reactor, and the third water quality meter is used to measure the pH value, ORP value, temperature value, and ammonia nitrogen concentration, nitrite nitrogen concentration, nitrate nitrogen concentration, and sulfate concentration in the anaerobic ammonium oxidation reactor.
10. A combined treatment system for acid mine drainage and municipal sludge, characterized in that: The invention comprises the combined treatment device for acid mine wastewater and municipal sludge according to any one of claims 1 to 9.