Comprehensive sewage treatment system
By linking acidic mine wastewater with urban sewage and residual sludge, using acidification tanks, thermohydrolizers and other components, the problem of high cost of independent treatment of acidic mine wastewater and residual sludge is solved, and efficient and low-cost sewage treatment and resource recycling are achieved.
Patent Information
- Application Number
- CN202422494800.5
- 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, acidic mine wastewater treatment is relatively independent of residual sludge treatment, with high cost and poor effect.
It provides a comprehensive sewage treatment system that links acidic mine wastewater with urban sewage and residual sludge, and realizes acidification treatment of residual sludge by acidic mine wastewater through acidification tanks, thermohydrolyzers, fermentation tanks and anaerobic ammonia oxidation reactors and other components, and produces fermentation broth and precipitates through deep treatment of anaerobic ammonia oxidation reaction.
It has achieved efficient coordinated treatment of acidic mine wastewater, urban sewage and residual sludge, reduced treatment costs, improved treatment efficiency, and achieved resource recycling by "waste control".
Smart Images
Figure CN223292408U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sewage treatment, and in particular to a comprehensive sewage treatment system. Background Art
[0002] Acid mine drainage (AMD) is rich in heavy metal ions and sulfates. If improperly treated, it can severely harm the soil environment and human health. It is one of the most serious environmental issues facing the mining industry and a pressing issue in mine environmental remediation efforts. Municipal wastewater treatment plants generate large amounts of excess sludge during the wastewater purification process, requiring additional treatment, such as concentration, conditioning, dehydration, stabilization, drying, or incineration, to reduce, stabilize, and render it harmless. This leads to high disposal costs.
[0003] However, in the prior art, acid mine drainage treatment and excess sludge treatment are relatively independent, and the costs of acid mine drainage treatment and excess sludge treatment are high. Utility Model Content
[0004] In view of this, the purpose of the present invention is to provide a comprehensive sewage treatment system.
[0005] In a first aspect, an embodiment of the present invention provides a comprehensive sewage treatment system, comprising:
[0006] The municipal sewage treatment unit includes a mainstream treatment unit and a side stream treatment unit; the mainstream treatment unit includes an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank and a high-efficiency sedimentation tank; the aerobic tank is connected to the side stream treatment unit, and the side stream treatment unit includes an anaerobic ammonium oxidation reactor;
[0007] The integrated treatment unit includes an acidification tank and a sedimentation tank; the acidification tank is used to acidify the residual sludge discharged from the secondary sedimentation tank and the incoming acid mine wastewater; the acidification tank is also connected in sequence to a thermal hydrolyzer and a fermentation tank to thermally hydrolyze and ferment the acidified sludge produced in the acidification tank to produce a fermentation liquid; the fermentation liquid is returned to the anaerobic tank of the mainstream treatment unit and / or the anaerobic ammonium oxidation reactor of the side stream treatment unit; the sedimentation tank is used to precipitate metal ions and phosphorus in the tail liquid of the acidification tank and the thermal hydrolyzer, and the precipitated tail water is sent to the high-efficiency sedimentation tank and / or the anaerobic ammonium oxidation reactor;
[0008] The anaerobic ammonium oxidation reactor is also connected to the outlet of the aerobic tank, the outlet of the fermentation tank and the outlet of the sedimentation tank. The anaerobic ammonium oxidation reactor is used to receive nitrate wastewater produced by the aerobic tank, fermentation liquid produced by the fermentation tank and tail water from the sedimentation tank, and separate sulfur element after nitrate-type anaerobic ammonium oxidation reaction and sulfate-type anaerobic ammonium oxidation reaction.
[0009] In combination with the first aspect, the sedimentation tank is also connected to an alkali liquid tank and a sodium sulfide tank; the alkali liquid tank is used to introduce alkali liquid into the sedimentation tank; and the sodium sulfide tank is used to input sodium sulfide into the sedimentation tank.
[0010] In combination with the first aspect, the thermal hydrolyzer is further connected to the sedimentation tank for transporting the thermal hydrolysis liquid and / or dehydrated liquid generated after thermal hydrolysis to the sedimentation tank.
[0011] In combination with the first aspect, a temperature controller and a pressure controller are also installed in the thermal hydrolyzer.
[0012] In combination with the first aspect, the sedimentation tank is also connected to the anaerobic ammonium oxidation reactor to transport the tail water of the sedimentation tank to the anaerobic ammonium oxidation reactor to mix with the fermentation liquid of the fermentation tank and the tail water of the aerobic tank for anaerobic treatment.
[0013] In combination with the first aspect, a dryer is further included; the dryer is connected to the sedimentation tank and is used to dry the sediment produced in the sedimentation tank and then transport it to the storage room.
[0014] In combination with the first aspect, the method further comprises a temperature controller and an acid-base regulating device, wherein the temperature controller and the acid-base regulating device are respectively arranged in the fermentation tank.
[0015] In combination with the first aspect, water quality measuring instruments are installed in the acidification tank, sedimentation tank and anaerobic ammonia oxidation reactor.
[0016] In combination with the first aspect, the measurement parameters of the water quality meter in the anaerobic ammonium oxidation reactor include pH value, ORP value, temperature value, ammonia nitrogen concentration, nitrite nitrogen concentration, nitrate nitrogen concentration, and sulfate concentration.
[0017] In combination with the first aspect, the invention further includes a PLC control mechanism connected to the alkali solution tank and the sodium sulfide tank.
[0018] The embodiments of the present invention bring the following beneficial effects:
[0019] The present invention provides a comprehensive sewage treatment system, comprising: a municipal sewage treatment unit, comprising a mainstream treatment unit and a side stream treatment unit; the mainstream treatment unit comprises an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, and a high-efficiency sedimentation tank; the aerobic tank is connected to the side stream treatment unit, and the side stream treatment unit comprises an anaerobic ammonia oxidation reactor; the comprehensive treatment unit comprises an acidification tank and a sedimentation tank; the acidification tank is used to mix and acidify the residual sludge discharged from the secondary sedimentation tank and the acidic mine wastewater introduced; the acidification tank is also connected in sequence to a thermal hydrolyzer and a fermentation tank to thermally hydrolyze and ferment the acidified sludge produced in the acidification tank to generate a fermentation liquid; The fermentation liquid is returned to the anaerobic tank of the mainstream treatment unit and the anaerobic ammonium oxidation reactor of the side stream treatment unit; the sedimentation tank is used to precipitate metal ions and phosphorus in the tail liquid of the acidification tank and the thermal hydrolyzer, and the precipitated tail water is sent to the high-efficiency sedimentation tank of the mainstream treatment unit and / or the anaerobic ammonium oxidation reactor of the side stream treatment unit; the anaerobic ammonium oxidation reactor is also connected to the outlet of the aerobic tank, the outlet of the fermentation tank and the outlet of the sedimentation tank. The anaerobic ammonium oxidation reactor is used to receive nitrate wastewater produced by the aerobic tank, fermentation liquid produced by the fermentation tank and tail water of the sedimentation tank, and separate elemental sulfur after nitrate-type anaerobic ammonium oxidation reaction and sulfate-type anaerobic ammonium oxidation reaction. In this way, the acid mine wastewater and the residual sludge produced in the secondary sedimentation tank of the municipal sewage treatment unit are comprehensively treated, and the fermentation liquid and sedimentation tank tail water produced by the comprehensive treatment are returned to the municipal sewage treatment unit, mixed with the nitrate wastewater produced in the aerobic tank, and then treated by the anaerobic ammonia oxidation reactor. This technology uses acid mine wastewater to acidify the residual sludge. Compared with the existing technology, the acid mine wastewater treatment is linked with the municipal sewage and residual sludge treatment process to achieve "waste treatment with waste" and improve treatment efficiency.
[0020] 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.
[0021] 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
[0022] 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.
[0023] Figure 1Schematic diagram of the structure of the comprehensive sewage treatment system provided in an embodiment of the present application.
[0024] The reference numerals are as follows:
[0025] 1-Municipal sewage treatment unit, 11-Mainstream treatment unit, 111-Anaerobic tank, 112-Anoxic tank, 113-Aerobic tank, 114-Secondary sedimentation tank, 115-High-efficiency sedimentation tank, 12-Side stream treatment unit, 121-Anaerobic ammonium oxidation reactor;
[0026] 2-integrated treatment unit, 21-acidification tank, 22-sedimentation tank, 23-thermal hydrolyzer, 24-fermentation tank, 25-alkali liquid tank, 26-sodium sulfide tank. 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] The primary cause of acid mine drainage (AMD) is the oxidation of sulfide minerals during mining, transportation, beneficiation, waste rock discharge, and tailings storage. These processes expose sulfide minerals, such as pyrite and chalcopyrite, which oxidize under the influence of air, precipitation, and microorganisms, producing sulfuric acid and other acidic compounds, which lower the pH of the water. For example, in coal mining, pyrite, which coexists with coal, produces sulfuric acid during oxidation, further acidifying the water. This acidic water not only harms aquatic life but also dissolves heavy metals, increasing water toxicity and posing a serious threat to the environment and human health.
[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] Existing AMD treatment technologies include physical and chemical methods and microbiological approaches. Physical and chemical methods primarily utilize ion exchange, membrane separation, adsorption, and neutralization precipitation. However, these methods suffer from lengthy processes, high costs, poor treatment efficiency, and the generation of secondary pollution. Microbiological methods primarily rely on microorganisms and are often limited by their slow growth, poor tolerance to metal ions, and unstable treatment results.
[0032] In addition, the residual sludge generated during the urban sewage treatment process also needs to be treated again, and the high treatment cost leads to high overall operating costs of the sewage treatment plant.
[0033] It can be seen that in the existing technology, the cost of independent acid mine drainage treatment and excess sludge treatment is high and the effect is poor.
[0034] Based on this, an embodiment of the present application provides a comprehensive sewage treatment system to dynamically combine and coordinate the treatment of acid mine wastewater, urban sewage and excess sludge.
[0035] Example 1
[0036] This application provides a comprehensive sewage treatment system, combined with Figure 1 As shown, it includes: an urban sewage treatment unit 1 and a comprehensive treatment unit 2.
[0037] The urban sewage treatment unit 1 includes a mainstream treatment unit 11 and a side stream treatment unit 12; the mainstream treatment unit 11 includes an anaerobic tank 111, an anoxic tank 112, an aerobic tank 113, a secondary sedimentation tank 114 and a high-efficiency sedimentation tank 115; the aerobic tank 113 is also connected to the side stream treatment unit 12, and the side stream treatment unit 12 includes an anaerobic ammonia oxidation reactor 121.
[0038] The integrated treatment unit 2 includes an acidification tank 21 and a sedimentation tank 22; the acidification tank 21 is used to acidify the mixed residual sludge discharged from the secondary sedimentation tank 114 and the introduced acid mine wastewater; the acidification tank 21 is also connected in sequence to a thermal hydrolyzer 23 and a fermentation tank 24 to thermally hydrolyze and ferment the acidified sludge produced by the acidification tank 21 to generate a fermentation liquid; the fermentation liquid is returned to the anaerobic tank 111 of the mainstream treatment unit 11 and the anaerobic ammonia oxidation reactor 121 of the side stream treatment unit 12; the sedimentation tank 22 is used to precipitate the metal ions and phosphorus in the tail liquid of the acidification tank 21 and the thermal hydrolyzer 23, and the precipitated tail water is sent to the high-efficiency sedimentation tank 115 and / or the anaerobic ammonia oxidation reactor 121.
[0039] The anaerobic ammonium oxidation reactor 121 is also connected to the outlet of the aerobic tank 113, the outlet of the fermentation tank 24 and the outlet of the sedimentation tank 22. The anaerobic ammonium oxidation reactor 121 is used to receive nitrate wastewater produced by the aerobic tank 113, the fermentation liquid produced by the fermentation tank 24 and the tail water of the sedimentation tank 22, and separate the sulfur element after the nitrate-type anaerobic ammonium oxidation reaction and the sulfate-type anaerobic ammonium oxidation reaction.
[0040] The comprehensive sewage treatment system provided in this application integrates and comprehensively treats acidic mine wastewater, urban sewage and residual sludge generated during the treatment of urban sewage. The residual sludge is treated by acidification of acidic mine wastewater to obtain dephosphorized residual sludge, which is then fermented to produce dephosphorized fermentation liquid. The fermentation liquid is then mixed with the effluent from the aerobic tank and the tail water from the sedimentation tank and is deeply treated using anaerobic ammonia oxidation technology. This can achieve "waste treatment with waste", which can not only improve the treatment efficiency of acidic mine wastewater, urban sewage and residual sludge, but also reduce their treatment costs.
[0041] Among them, the residual sludge generated by urban sewage treatment contains a large amount of phosphorus. When it is mixed with acidic mine wastewater in the acidification tank 21, the acidic mine wastewater acidifies the residual sludge to remove the phosphorus in the residual sludge. After that, thermal hydrolysis in the thermal hydrolyzer 23 further releases organic phosphorus. The content of heavy metals, phosphorus and other substances in the sludge after thermal hydrolysis treatment is reduced. The sludge is then put into the fermentation tank 24 for fermentation, and the fermentation liquid is returned to the anaerobic ammonium oxidation reactor 121 to further remove ammonia nitrogen and organic matter.
[0042] In combination with the first aspect, the sedimentation tank 22 is also connected to an alkali liquid tank 25 and a sodium sulfide tank 26 ; the alkali liquid tank 25 is used to introduce alkali liquid into the sedimentation tank 22 ; the sodium sulfide tank 26 is used to input sodium sulfide into the sedimentation tank 22 .
[0043] In this embodiment, sodium sulfide and alkali solution are added to the sedimentation tank 22 in a quantitative and constant rate to remove heavy metals, phosphorus, and ferrous ions by batch precipitation.
[0044] Specifically, first, sodium sulfide is added to the sedimentation tank 22 until the amount of precipitate does not increase, and the precipitate is discharged;
[0045] Add alkali solution to the sedimentation tank 22 until the pH value reaches 3, add sodium sulfide again until the amount of precipitate does not increase, and discharge the precipitate;
[0046] Add alkali solution to the sedimentation tank 22 until the pH value reaches 5-5.5, add sodium sulfide again until the amount of precipitate does not increase, and discharge the precipitate. At this point, the heavy metals are basically precipitated in the form of sulfides;
[0047] Alkali solution is added to the sedimentation tank 22 to a pH value of 6-8, and sodium sulfide is added again until the amount of precipitate does not increase, and the precipitate is discharged. At this point, FeP is basically precipitated and the recovery rate can reach 95%.
[0048] After the above steps, the tail water of the sedimentation tank 22 is mainly composed of sulfate and ferrous iron. There are three commonly used treatment methods: 1. Continue to add alkali solution to the sedimentation tank 22 until the pH value is 8.5-10, the precipitation does not increase, and the sediment is discharged. At this time, ferrous hydroxide is basically precipitated, and the tail water at this time can be mixed with the effluent of the urban sewage treatment plant and discharged; 2. The tail water of the sedimentation tank 22 is transported to the anaerobic ammonia oxidation reactor 121 for further reaction; 3. The tail water of the sedimentation tank 22 is transported to the high-efficiency sedimentation tank 115 for further high-efficiency precipitation.
[0049] In combination with the first aspect, the thermal hydrolyzer 23 is further connected to the sedimentation tank 22 for conveying the thermal hydrolysis liquid and / or dehydrated liquid generated after thermal hydrolysis to the sedimentation tank 22 .
[0050] In combination with the first aspect, a temperature controller (not shown in the figure) and a pressure controller (not shown in the figure) are also installed in the thermal hydrolyzer 23.
[0051] In this embodiment, the reaction temperature within thermal hydrolyzer 23 is controlled at 150-170°C by a temperature controller, and the reaction pressure within thermal hydrolyzer 23 is controlled at 2.5-0.8 MPa by a pressure controller. In this embodiment, the reaction time for thermal hydrolysis of the acidified sludge is controlled to approximately 30 minutes, producing thermally hydrolyzed sludge, which is then transported to sedimentation tank 22 for precipitation. Furthermore, after the thermally hydrolyzed sludge is diluted and cooled to a moisture content of 90%-95% and a temperature of 50-55°C, it is transported to fermentation tank 24 for further fermentation.
[0052] In combination with the first aspect, the sedimentation tank 22 is also connected to the anaerobic ammonium oxidation reactor 121 for conveying the tail water of the sedimentation tank 22 to the anaerobic ammonium oxidation reactor 121 for mixing with the fermentation liquid of the fermentation tank 24 and the effluent of the aerobic tank 113 for anaerobic treatment.
[0053] The anaerobic ammonium oxidation reactor 121 receives the fermentation liquid from the fermentation tank 24 (the fermentation liquid contains ammonia nitrogen and COD), the effluent from the aerobic tank 113 of the mainstream treatment unit 11 (the effluent contains nitrate), and the tail water from the sedimentation tank 22 (the tail water contains sulfate and ferrous iron). Nitrate-type anaerobic ammonium oxidation reaction and sulfate-type anaerobic ammonium oxidation reaction occur in the anaerobic ammonium oxidation reactor 121, and after separation by the cyclone, elemental sulfur is precipitated.
[0054] In this way, the anaerobic ammonium oxidation reactor 121 can not only be used for tail water purification in urban sewage treatment, but also can be used for purifying acid mine drainage and excess sludge generated by the mainstream treatment unit 11.
[0055] The conditions for anaerobic treatment in the anaerobic ammonium oxidation reactor 121 are as follows: pH range of 7.27-7.32, temperature range of 30° C.-37° C., and ORP range of -150 mV>ORP>-300 mV.
[0056] In combination with the first aspect, a dryer (not shown in the figure) is also included; the dryer is connected to the sedimentation tank 22 and is used to dry the sediment produced in the sedimentation tank 22 and then transport it to the storage room.
[0057] The sediment in the sedimentation tank 22 contains separated heavy metals, phosphorus, iron and other substances, which are classified and dried into powder or block form before storage.
[0058] In combination with the first aspect, it also includes a temperature controller (not shown in the figure) and an acid-base adjustment device (not shown in the figure), both of which are arranged in the fermentation tank 24. The fermentation temperature is 25-30°C and the pH range is 10-11.
[0059] In combination with the first aspect, a water quality meter (not shown) is installed in the acidification tank 21 , the sedimentation tank 22 and the anaerobic ammonium oxidation reactor 121 .
[0060] The water quality meter installed in the acidification tank 21 is used to detect phosphorus concentration and pH value.
[0061] The water quality detector installed in the sedimentation tank 22 is used to detect the ammonia nitrogen concentration, sulfate concentration and pH value.
[0062] In combination with the first aspect, the measurement parameters of the water quality meter in the anaerobic ammonium oxidation reactor 121 include pH value, ORP value, temperature value, ammonia nitrogen concentration, nitrite nitrogen concentration, nitrate nitrogen concentration, and sulfate concentration.
[0063] In combination with the first aspect, the comprehensive sewage treatment system also includes a PLC control mechanism, which is connected to the alkali liquid tank 25 and the sodium sulfide tank 26. The PLC mechanism controls the alkali liquid tank 25 and the sodium sulfide tank 26 to add alkali liquid and sodium sulfide to the sedimentation tank 22 in a timely and quantitative manner to further improve the degree of automation.
[0064] 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.
[0065] 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.
[0066] 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.
[0067] 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.
[0068] 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 comprehensive sewage treatment system, characterized in that: include: An urban sewage treatment unit comprises a mainstream treatment unit and a side stream treatment unit; the mainstream treatment unit comprises an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank and a high-efficiency sedimentation tank; the aerobic tank is connected to the side stream treatment unit, and the side stream treatment unit comprises an anaerobic ammonium oxidation reactor; The integrated treatment unit includes an acidification tank and a sedimentation tank; the acidification tank is used to mix and acidify the excess sludge discharged from the secondary sedimentation tank and the introduced acid mine wastewater; the acidification tank is also connected in sequence to a thermal hydrolyzer and a fermentation tank to thermally hydrolyze and ferment the acidified sludge produced in the acidification tank to produce a fermentation liquid; the fermentation liquid is refluxed to the anaerobic tank and the anaerobic ammonium oxidation reactor; The sedimentation tank is used to precipitate metal ions and phosphorus in the tail liquid of the acidification tank and the thermal hydrolyzer, and the precipitated tail water is sent to the high-efficiency sedimentation tank and / or the anaerobic ammonium oxidation reactor; The anaerobic ammonium oxidation reactor is also connected to the outlet of the aerobic tank, the outlet of the fermentation tank and the outlet of the sedimentation tank. The anaerobic ammonium oxidation reactor is used to receive the nitrate wastewater produced by the aerobic tank, the fermentation liquid produced by the fermentation tank and the tail water of the sedimentation tank, and separate the sulfur element after the nitrate-type anaerobic ammonium oxidation reaction and the sulfate-type anaerobic ammonium oxidation reaction.
2. The system according to claim 1, wherein: The sedimentation tank is also connected to an alkali liquid tank and a sodium sulfide tank; the alkali liquid tank is used to introduce alkali liquid into the sedimentation tank; the sodium sulfide tank is used to input sodium sulfide into the sedimentation tank.
3. The system according to claim 1, wherein: The thermal hydrolyzer is also connected to the sedimentation tank and is used to transport the thermal hydrolysis liquid and / or dehydrated liquid generated after thermal hydrolysis to the sedimentation tank.
4. The system according to claim 3, characterized in that A temperature controller and a pressure controller are also installed in the thermal hydrolyzer.
5. The system according to claim 4, characterized in that The sedimentation tank is also connected to the anaerobic ammonium oxidation reactor for conveying the tail water of the sedimentation tank to the anaerobic ammonium oxidation reactor to mix with the fermentation liquid of the fermentation tank and the tail water of the aerobic tank for anaerobic treatment.
6. The system according to claim 1, wherein: Also includes a dryer; The dryer is connected to the sedimentation tank and is used to dry the sediment produced in the sedimentation tank and then transport it to the storage room.
7. The system according to claim 4, wherein: It also includes a temperature controller and an acid-base regulating device, which are respectively arranged in the fermentation tank.
8. The system according to claim 1, wherein: The water quality meter is installed in the acidification tank, the sedimentation tank and the anaerobic ammonia oxidation reactor.
9. The system according to claim 8, characterized in that The measurement parameters of the water quality meter in the anaerobic ammonium oxidation reactor include pH value, ORP value, temperature value, ammonia nitrogen concentration, nitrite nitrogen concentration, nitrate nitrogen concentration, and sulfate concentration.
10. The system according to claim 2, wherein: It also includes a PLC control mechanism connected to the alkali solution tank and the sodium sulfide tank.