Treatment device and system for waste water of thermal power plant

Abstract

The embodiment of the invention provides a treatment device and system for waste water of a thermal power plant. The treatment device comprises a fixed support, a water taking container with a water taking opening in the bottom, a filter belt, a sealing piece, a water absorption assembly, a first rotating assembly and a second rotating assembly, wherein the first rotating assembly and the second rotating assembly are arranged on the surfaces of the two opposite sides of the water taking container respectively. One end of the fixed bracket is connected with the top of the side wall of the water taking container, and the other end is connected with the inner side wall of the wastewater containing pool; one end of the filter belt is wound on the first rotating assembly, and the other end of the filter belt slides through a water taking opening in the bottom of the water taking container and is wound on the second rotating assembly; the sealing element is arranged on one side, opposite to the water taking container, of the filter strip and is used for keeping the filter strip and the water taking opening in sealed connection; the water suction end of the water suction assembly is inserted into the water taking container, and the water drainage end of the water suction assembly is used for draining liquid. According to the treatment device for the waste water of the thermal power plant disclosed by the embodiment of the invention, the waste water formed by spraying can be effectively treated.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of wastewater treatment in thermal power plants, and specifically relate to a treatment device and system for wastewater in thermal power plants. Background Art

[0002] During the operation of thermal power plants, electricity is generated by burning coal, which produces sulfur-containing gas. Generally, the sulfur-containing gas is treated by spraying lime milk solution through a spray tower. The alkaline lime milk solution contacts and reacts with the sulfur-containing gas to extract the sulfur in the sulfur-containing gas. However, during the spraying process, the two come into contact and form wastewater, which contains lime milk and solidified sulfur that is difficult to treat. Summary of the invention

[0003] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a treatment device and system for wastewater from a thermal power plant.

[0004] On the one hand, an embodiment of the present disclosure provides a treatment device for wastewater from a thermal power plant, the treatment device comprising a fixed bracket, a water intake container with a water intake port at the bottom, a filter belt, a seal, a water absorption component, and a first rotating component and a second rotating component respectively disposed on opposite side surfaces of the water intake container; One end of the fixing bracket is connected to the top of the side wall of the water intake container, and the other end is used to connect to the inner wall of the wastewater holding tank to sink the bottom of the water intake container into the wastewater in the wastewater holding tank; One end of the filter belt is wound around the first rotating assembly, and the other end of the filter belt slides over the water inlet at the bottom of the water intake container and is wound around the second rotating assembly; the sealing member is arranged on the side of the filter belt relative to the water intake container to keep the filter belt and the water intake in a sealed connection; wherein, The first rotating assembly and the second rotating assembly rotate in the same direction to control the filter belt to move relative to the water intake seal; the water absorption end of the water absorption assembly is inserted into the water intake container, and the water discharge end is used to discharge liquid.

[0005] Optionally, the first rotating assembly includes a first roller and a first motor, and the second rotating assembly includes a second roller and a second motor; The first motor and the second motor are both fixed on the water collection container, and the first roller and the second roller are both rotatably connected to the water collection container; the output shaft of the first motor is drivingly connected to the first roller, and the output shaft of the second motor is drivingly connected to the second roller; One end of the filter belt is wound around the first roller, and the other end of the filter belt slides through the water intake port at the bottom of the water intake container and is wound around the second roller.

[0006] Optionally, the first motor and the first roller are both located on a first side of the water collection container, and the second motor and the second roller are both located on a second side of the water collection container; The first side and the second side of the water intake container are opposite to each other.

[0007] Optionally, the first rotating assembly further comprises at least one pair of first cleaning rollers, and the second rotating assembly further comprises at least one pair of second cleaning rollers; Each pair of the first cleaning roller and the second cleaning roller is rotatably connected to the water intake container; the first cleaning roller is located at the bottom of the side wall of the first side of the water intake container, the second cleaning roller is located at the bottom of the side wall of the second side of the water intake container, and the first roller is located between the fixed bracket and the first cleaning roller, and the second roller is located between the fixed bracket and the second cleaning roller; and, The filter belt and the seal are both sandwiched between each pair of the first cleaning rollers and each pair of the second cleaning rollers, so as to drive each pair of the first cleaning rollers and the second cleaning rollers to rotate when the filter belt moves.

[0008] Optionally, the processing device further comprises a fixing member, a first connecting member and a second connecting member; The first motor and the second motor are both fixed to the water intake container via the fixing member, the first roller and the second roller are both rotatably connected to the water intake container via the first connecting member, and each pair of the first cleaning rollers and each pair of the second cleaning rollers are rotatably connected to the water intake container via the second connecting member.

[0009] Optionally, the water suction assembly includes a pump, a water suction pipe and a drainage pipe; The water suction end of the water suction pipe is inserted into the water intake container, and the other end thereof is connected to the inlet of the pump; one end of the drainage pipe is connected to the outlet of the pump, and the drainage end thereof is used to discharge liquid.

[0010] Optionally, the water intake port is located in a central area of ​​the bottom of the water intake container, and the water intake port corresponds to a central area of ​​the filter belt.

[0011] Optionally, the sealing member is a sealing strip, which is arranged at an edge area of ​​the filter belt along the length direction of the filter belt to seal and connect the filter belt and the water intake.

[0012] On the other hand, an embodiment of the present disclosure provides a treatment system for wastewater from a thermal power plant, using the treatment device described above, wherein the treatment system includes a precipitation component, a chemical treatment component, and a biological treatment component; The sedimentation assembly includes a first sedimentation tank and a regulating tank, wherein the first sedimentation tank is used to precipitate the wastewater formed by spraying; the treatment device is used to filter the supernatant in the first sedimentation tank and discharge it to the regulating tank, and the regulating tank is used to adjust the pH value of the liquid therein; The regulating tank is connected to the chemical treatment component, and the chemical treatment component treats the liquid through chemical agents; the treatment device is also used to filter the liquid after chemical treatment and discharge it to the biological treatment component, and the biological treatment component treats the liquid through microorganisms so that the liquid meets the discharge requirements.

[0013] Optionally, the chemical treatment component includes a Fenton tank, a neutralization tank, a deoxygenation tank and a coagulation reaction tank connected in sequence, and the biological treatment component includes an anaerobic tank, an aerobic tank and a second sedimentation tank connected in sequence; wherein the coagulation reaction tank is connected to the aerobic tank through the treatment device.

[0014] The device and system for treating wastewater from a thermal power plant according to the embodiments of the present disclosure can effectively treat wastewater generated by spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a device for treating wastewater from a thermal power plant according to an embodiment of the present disclosure; Figure 2 This is a partial structural schematic diagram of a device for treating wastewater from a thermal power plant according to another embodiment of the present disclosure; Figure 3 for Figure 2 Schematic diagram from another angle; Figure 4 The present invention is a schematic diagram of the overall structure of a system for treating wastewater from a thermal power plant according to another embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] like Figures 1 to 3 As shown, a treatment device 100 for wastewater from a thermal power plant is shown, the treatment device 100 comprises a fixed bracket 110, a water intake container 120 with a water intake port at the bottom, a filter belt 130, a seal (not shown in the figure), a water absorption assembly 140, and a first rotating assembly 150 and a second rotating assembly 160 respectively disposed on opposite sides of the water intake container 120. One end of the fixed bracket 110 is connected to the top of the side wall of the water intake container 120, and the other end is used to connect to the inner side wall of the wastewater holding tank to sink the bottom of the water intake container 120 into the wastewater in the wastewater holding tank.

[0018] One end of the filter belt 130 is wound around the first rotating assembly 150, and the other end of the filter belt 130 slides over the water inlet at the bottom of the water intake container 120 and is wound around the second rotating assembly 160. The sealing member is arranged on one side of the filter belt 130 relative to the water intake container 120, so as to keep the filter belt 130 and the water intake in a sealed connection. The first rotating assembly 150 and the second rotating assembly 160 rotate in the same direction, so as to control the sealed movement of the filter belt 130 relative to the water intake. The water absorption end of the water absorption assembly 140 is inserted into the water intake container 120, and the drainage end thereof is used to discharge liquid.

[0019] Specifically, Figures 1 to 3 As shown, the wastewater holding pool is used to hold wastewater formed by spraying, and the wastewater can be precipitated in the wastewater holding pool, so that solid impurities in the wastewater are precipitated at the bottom of the pool. The fixed bracket 110 is used to fix the water intake container 120 in the wastewater holding pool, and the bottom of the water intake container 120 is submerged below the liquid surface of the wastewater holding pool. The liquid in the wastewater holding pool can enter the water intake container 120 through the filter belt 130 and the water intake port at the bottom of the water intake container 120, and the impurities are intercepted outside by the filter belt 130. When the filter belt corresponding to the water intake port is blocked, the filter belt 130 can be moved relative to the water intake port by rotating the first rotating assembly 150 and the second rotating assembly 160 in the same direction, so that a new filter belt portion is filtered corresponding to the water intake port. It is not difficult to understand that the first rotating assembly 150 and the second rotating assembly 160 can rotate in the same direction in a clockwise direction or in a counterclockwise direction. This embodiment does not limit this, as long as the two rotate in the same direction. The water absorbing component 140 can absorb the liquid in the water intake container 120 through its water absorbing end, and discharge the liquid through its water discharging end. The wastewater treatment device for thermal power plant of the embodiment of the present disclosure can effectively filter and treat the wastewater generated by spraying.

[0020] For example, Figures 1 to 3 The first rotating assembly 150 includes a first roller 151 and a first motor 152, and the second rotating assembly 160 includes a second roller 161 and a second motor 162. The first motor 152 and the second motor 162 are both fixed to the water intake container 120, and the first roller 151 and the second roller 161 are both rotatably connected to the water intake container 120. The output shaft of the first motor 152 is connected to the first roller 151, and the output shaft of the second motor 162 is connected to the second roller 161. One end of the filter belt 130 is wound around the first roller 151, and the other end of the filter belt 130 slides over the water intake port at the bottom of the water intake container 120 and is wound around the second roller 161.

[0021] Specifically, Figures 1 to 3 As shown, one end of the filter belt 130 is wound around the first roller 151, and the other end thereof slides through the water intake port at the bottom of the water intake container 120 and is wound around the second roller 161. The first motor 152 and the second motor 162 are respectively used to drive the first roller 151 and the second roller 161 to rotate in the same direction, so that the filter belt 130 moves toward the first side or the second side relative to the water intake port. The first side and the second side are explained as follows: The first motor 152 and the first roller 151 are both located at a first side of the water collection container 120, and the second motor 162 and the second roller 161 are both located at a second side of the water collection container 120. The first side and the second side of the water collection container 120 are opposite sides.

[0022] For example, Figures 1 to 3 As shown, the first rotating assembly 150 further includes at least one pair of first cleaning rollers 153, and the second rotating assembly 160 further includes at least one pair of second cleaning rollers 163. Each pair of the first cleaning rollers 153 and the second cleaning rollers 163 can be rotatably connected to the water intake container 120. The first cleaning roller 153 is located at the bottom of the side wall of the first side of the water intake container 120, the second cleaning roller 163 is located at the bottom of the side wall of the second side of the water intake container 120, and the first roller 151 is located between the fixed bracket 110 and the first cleaning roller 153, and the second roller 161 is located between the fixed bracket 110 and the second cleaning roller 163. And, the filter belt 130 and the sealing member are both sandwiched between each pair of the first cleaning rollers 153 and each pair of the second cleaning rollers 163, so as to drive each pair of the first cleaning rollers 153 and the second cleaning rollers 163 to rotate when the filter belt 130 moves.

[0023] Further, the water inlet is located in the central area of ​​the bottom of the water intake container 120, and the water inlet corresponds to the central area of ​​the filter belt 130. As a specific example, the sealing member is a sealing strip, which is arranged at the edge area of ​​the filter belt 130 along the length direction of the filter belt 130 to seal and connect the filter belt 130 and the water inlet.

[0024] As a specific example, Figures 1 to 3As shown, the water intake container 120 is set to a rectangular structure. A pair of rotatable first cleaning rollers 153 and second cleaning rollers 163 are respectively arranged on the first side and the second side of the water intake container 120, and a sealing strip is respectively arranged at the two edges of the filter belt 130 on one side relative to the water intake container 120, and the provided sealing strip can ensure that the filter belt 130 is always sealed and connected with the water intake during the movement. One end of the filter belt 130 and the sealing strip are jointly wound around the first roller 151, and the other end thereof passes through a pair of first cleaning rollers 153, then slides through the water intake at the bottom of the water intake container 120 and passes through a pair of second cleaning rollers 163, and finally is wound together around the second roller 161. The pair of first cleaning rollers 153 and the pair of second cleaning rollers 163 are both in contact with both sides of the filter belt 130.

[0025] In the wastewater holding tank, the liquid enters the water intake container 120 through the filter belt 130, while the impurities are intercepted outside by the filter belt 130. When the filter belt 130 is blocked, the first motor 152 and the second motor 162 are started, and the first motor 152 and the second motor 162 can drive the first roller 151 and the second roller 161 to rotate, and the first roller 151 and the second roller 161 drive the filter belt 130 and the sealing strip to move toward the first side or the second side relative to the water intake. Therefore, in this process, the new filter belt part can be made to correspond to the water intake to improve the water filtering capacity, and the first cleaning roller 153 and the second cleaning roller 163 can be further driven to rotate during the movement of the filter belt 130, and the impurities on the filter belt 130 are cleaned by the first cleaning roller 153 and the second cleaning roller 163, so as to further improve the filtering capacity and reusability of the filter belt 130, and it is no longer necessary to frequently replace the filter belt and clean it separately.

[0026] Exemplarily, both the first cleaning roller 153 and the second cleaning roller 163 may be provided with bristles for better cleaning the filter belt 130 .

[0027] For example, Figures 1 to 3 As shown, the processing device 100 further includes a fixing member 170, a first connecting member 180 and a second connecting member 190. The first motor 152 and the second motor 162 are both fixed to the water collection container 120 through the fixing member 170, the first roller 151 and the second roller 161 are both rotatably connected to the water collection container 120 through the first connecting member 180, and each pair of the first cleaning rollers 153 and each pair of the second cleaning rollers 163 are rotatably connected to the water collection container 120 through the second connecting member 190.

[0028] Furthermore, the water absorption assembly 140 includes a pump 141, a water absorption pipe 142 and a drainage pipe 143. The water absorption end of the water absorption pipe 142 is inserted into the water intake container 120, and the other end thereof is connected to the inlet of the pump 141. One end of the drainage pipe 143 is connected to the outlet of the pump 141, and the drainage end thereof is used to discharge liquid.

[0029] The wastewater treatment device for thermal power plants of the disclosed embodiment can effectively treat the wastewater generated by spraying, ensure the filtering performance of the filter belt, and can clean the filter belt in time, thereby increasing the overall service life of the device and avoiding the inconvenience caused by frequent replacement of the filter belt.

[0030] On the other hand, refer to Figure 1 and Figure 4 The embodiment of the present disclosure provides a treatment system 200 for wastewater from a thermal power plant, which uses the treatment device 100 described above. The specific structure of the treatment device 100 can refer to the relevant records above, and will not be described in detail here. The treatment system 200 includes a precipitation component 210, a chemical treatment component 220, and a biological treatment component 230.

[0031] The precipitation component 210 includes a first precipitation tank 211 and a regulating tank 212. The first precipitation tank 211 is used to precipitate the wastewater formed by spraying. The processing device 100 is used to filter the supernatant in the first precipitation tank 211 and send it to the regulating tank 212. The regulating tank 212 is used to adjust the pH value of the liquid therein. The regulating tank 212 is connected to the chemical treatment component 220. The chemical treatment component 220 treats the liquid with chemical agents. The processing device 100 is also used to filter the liquid after chemical treatment and send it to the biological treatment component 230. The biological treatment component 230 treats the liquid with microorganisms so that the liquid meets the discharge requirements.

[0032] Further, the chemical treatment component 220 includes a Fenton tank 221, a neutralization tank 222, a deoxygenation tank 223 and a coagulation reaction tank 224 connected in sequence, and the biological treatment component 230 includes an anaerobic tank 231, an aerobic tank 232 and a second sedimentation tank 233 connected in sequence. The coagulation reaction tank is connected to the aerobic tank through the treatment device 100.

[0033] Specifically, Figure 4 As shown, the first sedimentation tank 211 is used to precipitate the wastewater formed by spraying, so that the solid impurities in the wastewater are precipitated at the bottom of the first sedimentation tank 211. The supernatant in the first sedimentation tank 211 is filtered by the treatment device 100 and then pumped into the regulating tank 212. The pH of the solution is adjusted by adding an acidic additive (sulfuric acid, etc.) into the regulating tank 212, so that the solution tends to be neutral.

[0034] After the solution enters the Fenton cell 221, it is oxidized by the addition of H2O2 and Fe 2+ Ferrous sulfate (i.e., Fenton's agent) reacts at an appropriate pH value to generate hydroxyl radicals (•OH) with strong oxidizing ability. Hydroxyl radicals react with organic matter in the solution to decompose and oxidize the organic matter, reducing the chemical oxygen demand (COD) in the solution that is difficult to decompose biologically. The solution after Fenton oxidation then enters the neutralization tank 222, and the pH value of the solution is adjusted to neutral by adding liquid alkali so that the pH of the effluent meets the standard. A blower is set in the neutralization tank 222, and the stirring of the blower can promote the full progress of the neutralization reaction. The neutralized solution flows into the deoxygenation tank 223, and a blower is set in the deoxygenation tank 223 to remove a small amount of gas in the solution by blowing and stirring. The degassed solution then enters the coagulation reaction tank 224, and the flocculant PAM (polyacrylamide) is added to the coagulation reaction tank 224, and the coagulation reaction is fully carried out by blowing and stirring, so that the iron mud is precipitated in the coagulation reaction tank 224.

[0035] The supernatant in the coagulation reaction tank 224 is continuously filtered through the treatment device 100 and then pumped into the anaerobic tank 231. The anaerobic filler in the anaerobic tank 231 decomposes the biodegradable organic matter in the solution into simple organic matter (such as alcohol, ester, organic acid, etc.) and carbon dioxide, ammonia, hydrogen sulfide, etc. under anaerobic conditions by anaerobic microorganisms. The microorganisms in the anaerobic tank convert the macromolecular organic matter in the solution into small molecular organic matter through decomposition, thereby improving the biodegradability of the wastewater.

[0036] After the solution is discharged from the anaerobic tank 231 and enters the aerobic tank 232, in the aerobic tank 232, aerobic microorganisms use the dissolved oxygen in the water to oxidize and decompose the organic matter in the solution into inorganic substances such as carbon dioxide, water and nitrates under aerobic conditions. At the same time, through the nitrification reaction, the ammonia nitrogen in the solution is oxidized into nitrates, achieving the purpose of denitrification. The microorganisms in the aerobic tank 232 completely oxidize and decompose the organic matter in the solution into inorganic substances through metabolism, while releasing energy. Part of this energy is used for the growth and reproduction of the microorganisms themselves, and part of it is dissipated into the environment in the form of heat energy.

[0037] After the solution is discharged from the aerobic tank 232 and enters the second sedimentation tank 233, the activated sludge (microorganism community) in the aerobic tank 232 is separated from the supernatant by the sedimentation action of the second sedimentation tank 233, and the separated supernatant is discharged to meet the discharge requirements. Part of the precipitated sludge is returned to the anaerobic tank 231 or the aerobic tank 232 as a nutrient source for microorganisms, and part is regularly discharged from the system for disposal. The treatment system for wastewater from a thermal power plant of the embodiment of the present disclosure can harmlessly treat the wastewater formed by spraying, which is green and environmentally friendly.

[0038] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A treatment device for wastewater from a thermal power plant, characterized in that: The processing device comprises a fixed bracket, a water intake container with a water intake port at the bottom, a filter belt, a seal, a water absorption component, and a first rotating component and a second rotating component respectively arranged on two opposite sides of the water intake container; One end of the fixing bracket is connected to the top of the side wall of the water intake container, and the other end is used to connect to the inner wall of the wastewater holding tank to sink the bottom of the water intake container into the wastewater in the wastewater holding tank; One end of the filter belt is wound around the first rotating assembly, and the other end of the filter belt slides over the water inlet at the bottom of the water intake container and is wound around the second rotating assembly; the sealing member is arranged on the side of the filter belt relative to the water intake container to keep the filter belt and the water intake in a sealed connection; wherein, The first rotating assembly and the second rotating assembly rotate in the same direction to control the filter belt to move relative to the water intake seal; the water absorption end of the water absorption assembly is inserted into the water intake container, and the water discharge end is used to discharge liquid.

2. The device for treating wastewater from a thermal power plant according to claim 1, characterized in that: The first rotating assembly includes a first roller and a first motor, and the second rotating assembly includes a second roller and a second motor; The first motor and the second motor are both fixed on the water collection container, and the first roller and the second roller are both rotatably connected to the water collection container; The output shaft of the first motor is drivingly connected to the first roller, and the output shaft of the second motor is drivingly connected to the second roller; One end of the filter belt is wound around the first roller, and the other end of the filter belt slides through the water intake port at the bottom of the water intake container and is wound around the second roller.

3. The device for treating wastewater from a thermal power plant according to claim 2, characterized in that: The first motor and the first roller are both located on a first side of the water collection container, and the second motor and the second roller are both located on a second side of the water collection container; The first side and the second side of the water intake container are opposite to each other.

4. The device for treating wastewater from a thermal power plant according to claim 3, characterized in that: The first rotating assembly further comprises at least one pair of first cleaning rollers, and the second rotating assembly further comprises at least one pair of second cleaning rollers; Each pair of the first cleaning roller and the second cleaning roller is rotatably connected to the water intake container; the first cleaning roller is located at the bottom of the side wall of the first side of the water intake container, the second cleaning roller is located at the bottom of the side wall of the second side of the water intake container, and the first roller is located between the fixed bracket and the first cleaning roller, and the second roller is located between the fixed bracket and the second cleaning roller; and, The filter belt and the seal are both sandwiched between each pair of the first cleaning rollers and each pair of the second cleaning rollers, so as to drive each pair of the first cleaning rollers and the second cleaning rollers to rotate when the filter belt moves.

5. The device for treating wastewater from a thermal power plant according to claim 4, characterized in that: The processing device also includes a fixing member, a first connecting member and a second connecting member; The first motor and the second motor are both fixed to the water intake container via the fixing member, the first roller and the second roller are both rotatably connected to the water intake container via the first connecting member, and each pair of the first cleaning rollers and each pair of the second cleaning rollers are rotatably connected to the water intake container via the second connecting member.

6. The device for treating wastewater from a thermal power plant according to any one of claims 1 to 5, characterized in that: The water suction assembly includes a pump, a water suction pipe and a discharge pipe; The water suction end of the water suction pipe is inserted into the water intake container, and the other end thereof is connected to the inlet of the pump; one end of the drainage pipe is connected to the outlet of the pump, and the drainage end thereof is used to discharge liquid.

7. The device for treating wastewater from a thermal power plant according to any one of claims 1 to 5, characterized in that: The water intake port is located in the central area of ​​the bottom of the water intake container, and the water intake port corresponds to the central area of ​​the filter belt.

8. The device for treating wastewater from a thermal power plant according to claim 7, characterized in that: The sealing member is a sealing strip, which is arranged at the edge area of ​​the filter belt along the length direction of the filter belt and is used to seal and connect the filter belt and the water intake.

9. A system for treating wastewater from a thermal power plant, characterized in that: The treatment device according to any one of claims 1 to 8 is used, wherein the treatment system comprises a precipitation component, a chemical treatment component and a biological treatment component; The sedimentation assembly includes a first sedimentation tank and a regulating tank, wherein the first sedimentation tank is used to precipitate the wastewater formed by spraying; the treatment device is used to filter the supernatant in the first sedimentation tank and discharge it to the regulating tank, and the regulating tank is used to adjust the pH value of the liquid therein; The regulating tank is connected to the chemical treatment component, and the chemical treatment component treats the liquid through chemical agents; the treatment device is also used to filter the liquid after chemical treatment and discharge it to the biological treatment component, and the biological treatment component treats the liquid through microorganisms so that the liquid meets the discharge requirements.

10. The system for treating wastewater from a thermal power plant according to claim 9, characterized in that: The chemical treatment component includes a Fenton tank, a neutralization tank, a deoxygenation tank and a coagulation reaction tank connected in sequence, and the biological treatment component includes an anaerobic tank, an aerobic tank and a second sedimentation tank connected in sequence; wherein the coagulation reaction tank is connected to the aerobic tank via the treatment device.

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