Gas turbine thermal power plant wastewater treatment system
The wastewater treatment device for gas turbine thermal power plants addresses inefficiencies by integrating a filtration and heating system to enhance impurity removal and oxidative decomposition, ensuring consistent reaction conditions and improved treatment efficiency.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- HUANENG TAIYUAN DONGSHAN GAS TURBINE THERMAL POWER CO LTD
- Filing Date
- 2025-11-27
- Publication Date
- 2026-07-02
Smart Images
Figure 2026110521000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of waste liquid treatment, and specifically, to a waste liquid treatment device for a gas turbine thermal power plant.
Background Art
[0002] A gas turbine thermal power plant generates a large amount of waste liquid during the production process. These waste liquids contain multiple types of harmful substances, and direct discharge will cause serious pollution to the environment. At the same time, some recoverable resources are also contained in the waste liquid. If appropriate treatment and resource utilization can be carried out, it will contribute to improving resource utilization efficiency and reducing environmental pollution.
[0003] Existing boiler waste liquid treatment devices for thermal power plants can control the dosage of chemicals during boiler waste liquid treatment by installing a material addition assembly in the treatment device. Thereby, the dosage of chemicals can be adjusted according to the pollution degree of the waste liquid, and the efficiency of waste liquid treatment is improved. However, due to the lack of a filtration assembly, the waste liquid cannot be pretreated and large-particle impurities in the waste liquid cannot be effectively removed. Also, due to the lack of a heating mechanism, it is difficult to keep the temperature and pressure constant when performing oxidation precipitation treatment on the waste liquid. As a result, fluctuations in temperature and pressure occur, the reaction runs out of control, by-products are generated, and furthermore, since the temperature of the waste liquid does not meet the conditions for the oxidation reaction, the efficiency of the oxidation reaction of the waste liquid becomes low, affecting the treatment efficiency and effect of the waste liquid treatment device. Therefore, it is urgent to design a waste liquid treatment device for a gas turbine thermal power plant to solve the above problems.
Summary of the Invention
Problems to be Solved by the Invention
[0004] The present invention provides a waste liquid treatment device for a gas turbine thermal power plant and its operation method for solving at least one of the problems in the above background art.
Means for Solving the Problems
[0005] To solve the above technical problems, the present invention discloses a wastewater treatment device for a gas turbine thermal power plant, the device including a filtration box, the filtration box being fixedly mounted to the side wall inside the housing, a filtration assembly being installed inside the filtration box, a heating mechanism being installed at the bottom inside the housing, and the liquid outlet at the bottom of the filtration box and the heating mechanism being in communication via a first liquid transport pipeline, a reaction precipitation mechanism being installed on one side of the heating mechanism, and the reaction precipitation mechanism and the heating mechanism being in communication via a second liquid transport pipeline.
[0006] The wastewater treatment device for gas turbine thermal power plants according to the present invention has the following beneficial effects compared to conventional technology.
[0007] 1. The wastewater treatment system of the gas turbine thermal power plant described above pre-treats the wastewater with an installed filtration assembly, effectively removing large particulate impurities from the wastewater. The heating mechanism then works in cooperation with the reaction precipitation mechanism to complete the heating of the wastewater before oxidative precipitation treatment, raising the wastewater temperature to a range suitable for the oxidation reaction. This accelerates the reaction between organic matter and the oxidizing agent in the wastewater, contributing to improved efficiency of oxidative decomposition. At the same time, it maintains a constant reaction temperature and pressure, controlling the progress of the oxidation reaction and preventing runaway reactions or the generation of by-products due to temperature fluctuations or pressure changes. This effectively improves the efficiency of the oxidation reaction of the wastewater and guarantees the treatment efficiency and effectiveness of the wastewater treatment system.
[0008] 2. The wastewater treatment system for the gas turbine thermal power plant described above can reduce the chemical oxygen demand (COD) by adding an oxidizing agent to the organic matter in the wastewater through the installed reaction precipitation mechanism. Next, the stirring mechanism can thoroughly stir the wastewater during the oxidation reaction process to promote the mixing of reactants and products, thereby accelerating the reaction efficiency. At the same time, the cleaning assembly can clean the inner wall of the treatment tank in a timely manner, preventing colloids from adhering to the inner wall of the treatment tank as suspended matter and affecting the treatment efficiency and treatment of the wastewater treatment system. [Brief explanation of the drawing]
[0009] To more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly describes the drawings that may be used in the examples or descriptions of the prior art. Obviously, the drawings in the following description are some examples of the present invention, and those skilled in the art can obtain other drawings based on these without expending any creative effort. [Figure 1] This is a schematic diagram of the structure of a wastewater treatment device for a gas turbine thermal power plant according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of the internal structure of the auxiliary box of a wastewater treatment device for a gas turbine thermal power plant according to an embodiment of the present invention. [Figure 3] This is a schematic plan view showing the connection between a fixing ring and a cleaning brush in a wastewater treatment device for a gas turbine thermal power plant according to an embodiment of the present invention. [Modes for carrying out the invention]
[0010] To further clarify the object, technical solution, and advantages of the present invention, the technical solution will be clearly and completely described below, in conjunction with the drawings. Naturally, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained based on the embodiments of the present invention without the creative effort of a person skilled in the art are all within the scope of the protection of the present invention.
[0011] The present invention provides the following embodiments.
[0012] (Example 1) An embodiment of the present invention provides a wastewater treatment device for a gas turbine thermal power plant, which includes a filtration box 1 as shown in Figure 1, the filtration box 1 is fixedly mounted to the side wall inside a housing 2, a filtration assembly is installed inside the filtration box 1, a heating mechanism 3 is installed at the bottom inside the housing 2 and the liquid outlet at the bottom of the filtration box 1 and the heating mechanism 3 are in communication via a first liquid transport pipeline 4, a reaction precipitation mechanism 5 is installed on one side of the heating mechanism 3 and the reaction precipitation mechanism 5 and the heating mechanism 3 are in communication via a second liquid transport pipeline 10.
[0013] Preferably, the filtration assembly includes a flow guide plate 6 and a filter screen 7, wherein the flow guide plate 6 is installed above the filter screen 7, and the flow guide plate 6 and the filter screen 7 are installed in the filtration box 1 at a certain angle, specifically, one side of the flow guide plate 6 (i.e., the right end of the flow guide plate 6 shown in Figure 1) is fixedly attached to the inner wall of the filtration box 1, the other side of the flow guide plate 6 (i.e., the left end of the flow guide plate 6 shown in Figure 1) is inclined downward and a certain distance is maintained between it and the left side wall of the cavity of the filtration box 1, and a liquid passage is formed between the left end of the flow guide plate 6 and the left side wall of the cavity of the filtration box 1, thereby allowing the waste liquid to be filtered to flow through this liquid passage to the filter screen 7 for filtration, and both sides of the filter screen 7 (i.e., the left and right ends of the filter screen 7 shown in Figure 1) are fixedly attached to the inner wall of the filtration box 1. Therefore, the filter screen 7 has a slope where the left side is higher and the right side is lower. The waste liquid flows down through the left end of the guide plate 6 and reaches the left end of the filter screen 7. Because the left side of the filter screen 7 is higher and the right side is lower, the waste liquid flows from the left side of the filter screen 7 to the right side. In the process of flowing, the liquid flows through the perforated mesh structure of the filter screen 7 to the bottom of the filtration box 1. Solid waste (i.e., filtration slag) that remains on the upper side of the filter screen 7 in the waste liquid can flow along the sloped filter screen 7 to the right side of the filter screen 7. Thus, a slag outlet 8 is fitted into the filtration box 1 above the right side of the filter screen 7. The upper side of the slag outlet 8 is higher than the right end of the filter screen 7, and the lower side of the slag outlet 8 is not higher than the right end of the filter screen 7. This allows the slag outlet 8 to be used to discharge as much of the filtered filtration slag on the filter screen 7 as possible, thus avoiding accumulation. The filtered slag discharged from the slag outlet 8 can be subjected to further processing, and the first valve 9 is connected to the first liquid transport pipeline 4.In this embodiment, by installing the flow guide plate 6, the flow of waste liquid entering from the filtration box inlet 1-1 at the top of the filtration box 1 can be stabilized. As the waste liquid flows from the right end to the left end of the flow guide plate 6, it gradually spreads out and is distributed relatively uniformly in the front-to-back direction of the filtration box 1 (i.e., the direction perpendicular to the diagram shown in Figure 1), then flows to the left end of the filter screen 7, and further flows from the left end to the right end of the filter screen 7. Because the state of the waste liquid is relatively uniform during the flow process, the filtration effect of the filter screen 7 on the filtrate is good, and the filtration slag formed on the filter screen 7 is carried to the slag outlet 8 along with the flow of waste liquid. Furthermore, as much of the filtration slag on the filter screen 7 as possible can be discharged from the slag outlet 8, improving the filtration effect, and preventing the filtration slag from accumulating on the filter screen 7. The first liquid transport pipeline 4 allows the filtrate at the bottom of the filtration box 1 to be transported into the heating mechanism 3. The first valve 9 on the first liquid transport pipeline 4 can be used to control the timing of when the filtrate in the filtration box 1 enters the heating mechanism 3 by controlling the open / closed state of the first liquid transport pipeline 4. That is, when it is necessary to transport the filtrate in the filtration box 1 to the heating mechanism 3, the first valve 9 is opened, and when the amount of filtrate (waste liquid) in the heating mechanism 3 reaches a certain level, the first valve 9 is closed, and at this time the transport of the filtrate in the filtration box 1 to the heating mechanism 3 is stopped.
[0014] Preferably, the heating mechanism 3 includes a heating box 11, the bottom of which is fixedly attached to the bottom of the housing 2, the intake pipe 12 and exhaust pipe 13 are at a certain distance from each other in the vertical direction, both the intake pipe 12 and exhaust pipe 13 penetrate the housing 2 and the right side wall of the heating box 11, the heating bend 14 is installed inside the heating box 11, and the intake pipe 12 and exhaust pipe 13 are connected to the upper and lower ends of the heating bend 14 in a one-to-one correspondence, that is, when the heating mechanism 3 heats the waste liquid (i.e., the filtrate transported from the filtration box 1), the heat carrier gas (e.g., water vapor) is supplied from the intake pipe 12 or The heat carrier gas enters the heating bend 14, and as it flows through the heating bend 14, it heats the waste liquid in the heating box 11. After heat exchange and cooling, the heat carrier gas is discharged from the exhaust pipe 13. The heating bend 14 may be a meandering bend to increase the heat exchange area. The problem of heating the waste liquid by the heating bend 14 can be controlled by controlling the temperature of the heat carrier gas supplied from the intake pipe 12 and the transport rate of the heat carrier gas. This allows the waste liquid to be heated to a preset temperature, and those skilled in the art can adjust it according to the actual situation. This application is not specifically limited. The water pump 15 is fixedly mounted on the top of the heating box 11, and the water inlet of the second liquid transport pipeline 10 is located in the lower part of the heating box 11. The water pump 15 and the second valve 16 are fixedly connected to the second liquid transport pipeline 10, and the second valve 16 is located on the outlet side of the water pump 15. The waste liquid in the heating box 11 can be transported into the reaction sedimentation mechanism 5 by the water pump 15 and the second liquid transport pipeline 10, and the open / closed state of the second liquid transport pipeline 10 can be controlled using the second valve 16. When it is necessary to transport the waste liquid in the box 11 to the reaction sedimentation mechanism 5, the water pump 15 and the second valve 16 are opened. When it is necessary to stop transporting the waste liquid in the heating box 11 to the reaction sedimentation mechanism 5, the water pump 15 and the second valve 16 are closed. A liquid level gauge 17 is also fixed and connected to the portion of the second liquid transport pipeline 10 located inside the heating box 11. This liquid level gauge 17 can be used to measure the liquid level of the waste liquid in the heating box 11, and the liquid level status of the waste liquid in the heating box 11 can be accurately determined from the measurement results of the liquid level gauge 17.
[0015] The operating principle and beneficial effects of the above proposed technology are as follows:
[0016] The wastewater treatment device for a gas turbine thermal power plant of the present invention pre-treats the wastewater to be treated by a filtration assembly installed in a filtration box 1, effectively removing large particulate impurities contained in the wastewater. During operation, the wastewater is first transported into the filtration box 1 from the liquid inlet at the top of the filtration box 1, and guided by the buffering and guidance of the flow guide plate 6 to guide the wastewater above the filtration screen 7, where the removal of large particulate impurities in the wastewater is completed. The filtration screen 7 is installed at a certain angle, and impurities generated by filtration at its top can be discharged from the slag outlet 8. The filtered wastewater is transported into the heating box 11 via a first liquid transport pipeline 4, and a first valve 9 connected to the first liquid transport pipeline 4 can control the flow rate transported into the heating mechanism 3.
[0017] The heating mechanism 3 installed above heats the wastewater before the reaction and sedimentation treatment, bringing it to an appropriate reaction temperature, thereby shortening the wastewater treatment process time. When in operation, high-temperature steam is first introduced into the heating pipe 14 via the intake pipe 12, at which point the heating pipe 14 heats the wastewater (i.e., wastewater) in the heating box 11 to a temperature suitable for the reaction. After the temperature rises, the wastewater is then transported into the reaction and sedimentation mechanism 5 via the second liquid transport pipeline 10 and water pump 15. A liquid level gauge 17 installed in the heating box 11 can monitor the liquid level of the wastewater in the heating box 11, and a connected second valve 16 controls the flow rate of the wastewater transported into the reaction and sedimentation mechanism 5. Furthermore, in industrial settings such as gas turbine power plants, steam is an easily accessible and relatively inexpensive energy source. By using a steam heating mechanism and utilizing steam provided by a waste heat recovery system, efficient energy utilization can be achieved. This not only contributes to reducing energy consumption in the wastewater treatment process but also aligns with the principles of environmental friendliness and sustainable development.
[0018] The filtration assembly installed as described above pre-treats the wastewater, effectively removing large particulate impurities. Next, the heating mechanism 3 works in cooperation with the reaction precipitation mechanism 5 to complete the heating of the wastewater before oxidative precipitation treatment, raising the wastewater temperature to a range suitable for the oxidation reaction. This accelerates the reaction between organic matter and the oxidizing agent in the wastewater, contributing to improved efficiency of oxidative decomposition. At the same time, it maintains a constant reaction temperature and pressure, controlling the progress of the oxidation reaction and preventing runaway reactions or the generation of by-products due to temperature fluctuations or pressure changes. This effectively improves the efficiency of the oxidation reaction of the wastewater and ensures the treatment efficiency and effectiveness of the wastewater treatment apparatus.
[0019] (Example 2) In addition to the first embodiment, as shown in Figures 1 to 3, the reaction precipitation mechanism 5 includes a processing tank 18, which is fixedly mounted to the bottom of the housing 2, a liquid storage box 19 is fixedly mounted to the outer wall of the filtration box 1, and the liquid outlet of the liquid storage box 19 communicates with the liquid inlet at the top of the processing tank 18 via a third liquid transport pipeline 20, the liquid outlet of the second liquid transport pipeline 10 communicates with the liquid inlet on the side wall of the processing tank 18, an auxiliary box 21 is fixedly mounted to the top of the processing tank 18, and a drive assembly 22 is installed inside the auxiliary box 21, and a stirring assembly and a cleaning assembly are installed inside the processing tank 18, and the stirring assembly and the cleaning assembly are driven by the drive assembly 22.
[0020] Preferably, the drive assembly 22 includes a drive motor 23, the drive motor 23 is fixedly mounted to the inner wall of the auxiliary box 21, a turntable 24 is fixedly mounted coaxially to the output shaft of the drive motor 23, a hinge rod 25 is fixedly connected to the center of the turntable 24 away from the turntable 24 (i.e., the hinge rod 25 is eccentrically mounted on the turntable 24), a first groove 26 and a second groove 27 are provided on the top of the auxiliary box 21, the top of the first slide groove 28 is slidably connected to the first groove 26, specifically, the first A first slider 28-1 is provided at the top of the slide groove 28, the first slider 28-1 is installed in the first recessed groove 26, the first slider 28-1 is slidable left and right (see the orientations shown in Figures 1 and 2) within the first recessed groove 26, the hinge rod 25 is slidably connected within the first slide groove 28, and when the turntable 24 rotates, the hinge rod 25 rotates along with the turntable 24 around the axis of rotation of the turntable 24, and because the top of the first slide groove 28 is restricted by the first slider 28-1 and the first recessed groove 26, the hinge rod 25 moves This allows the first slide groove 28 to be driven to move horizontally (see left and right directions shown in Figures 1 and 2), the left end of the L-shaped rod 29 is fixedly connected to the right side of the first slide groove 28, the right end of the L-shaped rod 29 penetrates the right side of the auxiliary box 21 and is installed facing downward, the slide rod 30 is fixedly connected to the L-shaped rod 29, and the upper end of the slide rod 30 is slidably connected to the second recessed groove 27, specifically the second slider 30-1 is fixedly connected to the upper end of the slider rod 30, and the second slider 30- 1 is installed in the second groove 27, and the second slider 30-1 can slide left and right (refer to the orientations shown in Figures 1 and 2) within the second groove 27, support rods 32 are fixedly connected to the left and right side walls of the connecting block 31, two third grooves 33 are provided in the left and right inner walls of the auxiliary box 21, one end of each support rod 32 is fixedly connected to the connecting block 31, and the other end of each support rod 32 is slidably connected to the third groove 33 on the same side, that is, the right end of the right support rod 32 is slidably connected to the third groove 33 on the right inner wall of the auxiliary box 21.Specifically, the left end of the left support rod 32 is slidably connected to a third groove 33 on the left inner wall of the auxiliary box 21, and the lower end of the slide rod 30 is slidably connected to a second slide groove 34 fitted into the connecting block 31. The second slide groove 34 may employ a sloping structure with a lower left end and a higher right end. When the first slide groove 28 moves horizontally, it can drive the L-shaped rod 29 to move horizontally. When the L-shaped rod 29 moves horizontally, it can drive the slide rod 30 to move horizontally. After the slide rod 30 moves horizontally, because the second slide groove 34 is sloping, the lower end of the slide rod 30 can drive the connecting block 31 via the second slide groove 34 to move vertically (i.e., the up and down direction shown in Figures 1 and 2). When the connecting block 31 moves vertically, the support rod 32 provides horizontal support to the connecting block 31 and moves vertically with the movement of the connecting block 31, allowing the connecting block 31 to move stably vertically.
[0021] Preferably, the stirring assembly includes a drive rack 35, the ends of which slide through the side walls of the auxiliary box 21, and one end of the drive rack 35 is fixedly connected to the lower end of the L-shaped rod 29 (i.e., the right end of the L-shaped rod 29). The lower end of the drive shaft 36 penetrates the top of the processing tank 18 and a stirring rod 38 is fixedly attached to it. The drive shaft 36 is rotatably connected to the top of the processing tank 18, and a drive gear 37 is fixedly attached to the upper end of the drive shaft 36. The drive shaft 36, drive gear 37, stirring rod 38, and processing tank 18 are all coaxially mounted, specifically the upper end of the drive shaft 36 is connected to the rotation axis of the drive gear 37. The drive gear 37 meshes with the drive rack 35. When the L-shaped rod 29 moves horizontally, it can drive the drive rack 35 to move horizontally, and when the drive rack 35 moves horizontally, it can drive the drive gear 37 to rotate, and when the drive gear 37 rotates, it can drive the stirring rod 38 to rotate, and after rotating, the stirring rod 38 can stir the liquid material in the processing tank 18.
[0022] Preferably, the cleaning assembly includes a connecting bracket 39, the top of which is fixedly connected to the connecting block 31, and the connecting bracket 39 passes through the auxiliary box 21, and the connecting bracket 39 and the opening in the auxiliary box 21 through which the connecting bracket 39 passes are slidably connected, so that when the connecting block 31 moves vertically, the connecting bracket 39 can move vertically with the connecting block 31, and two fixing sleeves 40 are fixedly mounted symmetrically inside the processing tank 18, each fixed The upper and lower ends of the fixed sleeve 40 are fixedly attached to the top and bottom of the processing tank 18, and a guide rod 41 is fixedly connected to each fixed sleeve 40. When the fixed sleeve 40 is connected to the guide rod 41, the upper end of the guide rod 41 is fixedly connected to the top of the fixed sleeve 40, and the lower end of the guide rod 41 is fixedly connected to the bottom of the fixed sleeve 40. The lower end of the connecting bracket 39 penetrates the top of the processing tank 18, and the connecting bracket 39 and the opening on the processing tank 18 through which the connecting bracket 39 passes The holes are slidably connected, and the lower end of the connecting bracket 39 is slidably connected to the guide rod 41. Specifically, the connecting bracket 39 has two parts, left and right. The lower end of the left part of the connecting bracket 39 is slidably connected to the left guide rod 41, and the lower end of the right part of the connecting bracket 39 is slidably connected to the right guide rod 41. Multiple mounting blocks 43 are slidably connected to each guide rod 41, and on the guide rod 41, between adjacent mounting blocks 43, the uppermost mounting block 43 and the connecting bracket 39 A spring 44 is fitted between the lower end and the bottom of the processing tank 18, the number of mounting blocks 43 on the two guide rods 41 is the same, and the height at which mounting blocks 43 of the same number on the two guide rods 41 are located is the same (for example, if five of the mounting blocks 43 are attached to each of the two guide rods 41, and counting from top to bottom, the number of the first mounting block 43 is 1, the number of the second mounting block 43 is 2, and so on, until the number of the fifth mounting block 43 is 5).A fixed ring 42 is fixedly connected to the outer periphery of two mounting blocks 43 of the same height, and a cleaning brush 45 is fixedly attached to the outer wall of each said fixed ring 42 (i.e., the side wall facing the inner wall of the treatment tank 18), and the cleaning brush 45 contacts the inner wall of the treatment tank 18. When the connection bracket 39 moves downward, the connection bracket 39 compresses the spring 44, and all the springs 44 undergo axial compressive deformation. At this time, the springs 44 can drive all the mounting blocks 43 to displace vertically along the guide rod 41. When the mounting block 43 moves vertically, the cleaning brush 45 cleans the inner wall of the treatment tank 18. When the connection bracket 39 moves upward, all the springs 44 undergo recovery deformation. At this time, the springs 44 can drive all the mounting blocks 43 to displace vertically along the guide rod 41. When the mounting block 43 moves vertically, the cleaning brush 45 cleans the inner wall of the treatment tank 18. A discharge port 18-1 may be installed at the bottom of the treatment tank 18, thereby discharging the treated waste liquid and the formed slag in the treatment tank 18.
[0023] Preferably, the fixed ring 42 may adopt an annular structure shown in FIG. 3. The cross-section of the treatment tank 18 is also provided in a circular shape. The fixed ring 42 is provided coaxially with the treatment tank 18. Two said mounting blocks 43 are symmetrically provided on the inner ring of the fixed ring 42. Here, the left mounting block 43 is slidably connected to the left guide rod 41, and the right mounting block 43 is slidably connected to the right guide rod 41. The cleaning brush 45 is uniformly provided on the outer ring of the fixed ring 42 (i.e., the side facing the inner wall of the treatment tank 18).
[0024] The working principle and beneficial effects of the above technical solution are as follows.
[0025] The installed reaction precipitation mechanism 5 completes the oxidation reaction precipitation treatment of the waste liquid, generating an oxidative decomposition reaction in the organic matter in the waste liquid and reducing the COD concentration. When in operation, the drive motor 23 is started, and the drive motor 23 drives the turntable 24 to rotate. As the turntable 24 rotates, the hinge rod 25 slides up and down in the first slide groove 28, and at the same time the first slide groove 28 slides left and right in the first recessed groove 26 of the first slider 28-1. Along with this, the L-shaped rod 29 slides left and right due to the drive of the first slide groove 28. Here, the through hole opened in the side wall of the auxiliary box 21 for the L-shaped rod 29 to pass through can provide a certain guiding effect for the left and right sliding of the L-shaped rod 29. The left-right sliding of the rod 29 can drive and operate the connected stirring assembly, and the slide rod 30, which is fixedly connected to the lower end of the L-shaped rod 29, also achieves left-right sliding in conjunction with the left-right sliding of the L-shaped rod 29. The left-right sliding of the slide rod 30 drives the connecting block 31, which moves up and down through the support action of the support rod 32. The ends of the support rods 32 on both sides are slidably connected in two third grooves 33 on the left and right, ensuring that the connecting block 31 can move up and down smoothly, thereby driving and operating the connected cleaning assembly.
[0026] Driven by the L-shaped rod 29, the drive rack 35, which is fixedly connected to the lower end of the L-shaped rod 29, slides left and right along the side wall of the auxiliary box 21. A sliding groove is provided on the side wall of the auxiliary box 21 to guide the drive rack 35 horizontally left and right. The drive rack 35 and the drive gear 37 mesh and transmit power, achieving synchronous rotation of the drive gear 37. At the same time, the drive shaft 36, which is fixedly connected to the drive gear 37, rotates at the top of the processing tank 18, and the stirring rod 38 (which is equipped with stirring blades or a stirring rod for stirring the liquid) fixedly connected to the lower end of the drive shaft 36 rotates synchronously. When the oxidizing agent in the storage box 19 is transported into the processing tank 18 via the third liquid transport pipeline 20, the oxidizing agent undergoes an oxidation reaction with the wastewater in the processing tank 18, and at this time, stirring The mixing mechanism can accelerate the mixing rate of the oxidizing agent and wastewater, thereby accelerating the reaction rate, ensuring the treatment efficiency of the reaction treatment mechanism for wastewater, thoroughly mixing the reactants and products, and improving the treatment effect. The connecting block 31 drives the vertical movement of the connecting bracket 39, causing the lower end of the connecting bracket 39 to slide up and down along the guide rod 41. As the lower end of the connecting bracket 39 slides up and down along the guide rod 41, the connecting bracket 39 drives the spring 44 to deform and moves all the fixing rings 42 up and down along the guide rod 41. At the same time, the cleaning brush 45, which is fixed and connected to the fixing rings 42, effectively removes large particle products adhering to the inner wall of the treatment tank 18, preventing long-term accumulation from affecting the treatment efficiency of the reaction sedimentation mechanism 5.
[0027] The installed reaction precipitation mechanism 5 allows for the addition of an oxidizing agent to induce an oxidative decomposition reaction in organic matter in the wastewater, thereby reducing the chemical oxygen demand (COD). Subsequently, the stirring mechanism thoroughly stirs the wastewater during the oxidation reaction process, promoting the mixing of reactants and products and accelerating the reaction efficiency. At the same time, the cleaning assembly allows for timely cleaning of the inner wall of the treatment tank 18, preventing colloids from adhering to the inner wall of the treatment tank 18 as suspended matter and affecting the treatment efficiency and processing of the wastewater treatment device.
[0028] (Example 3) In addition to Example 1 or 2, the method further includes a reaction performance detection device for detecting the operating state of the reaction precipitation mechanism 5 when it is oxidizing the waste liquid, and the reaction performance detection device is A densimeter for detecting the density of the precipitate formed by the reaction at the bottom of the processing tank 18, A first temperature sensor for detecting the temperature of waste liquid being transported in the second liquid transport pipeline 10, A second temperature sensor for detecting the temperature of the waste liquid output from the treatment tank 18 after the waste liquid has undergone reaction and sedimentation treatment, A controller and an alarm, the controller being electrically connected to a densimeter, a first temperature sensor, a second temperature sensor and an alarm, the controller controlling the operation of the alarm based on data collected by the densimeter, the first temperature sensor and the second temperature sensor, and the alarm.
[0029] Preferably, the controller controlling the operation of the alarm based on data collected by the density meter, the first temperature sensor, and the second temperature sensor includes the following steps:
[0030] Based on the following formula and the detection values of the density meter, the first temperature sensor, and the second temperature sensor, the controller calculates the settling velocity V of the particles generated when the waste liquid is treated with an oxidation reaction by the reaction sedimentation mechanism 5. The controller compares the current settling velocity V of the particles generated when the waste liquid is treated with an oxidation reaction by the reaction sedimentation mechanism 5 with a preset settling velocity range for particles. If the current settling velocity V of the particles generated when the waste liquid is treated with an oxidation reaction by the reaction sedimentation mechanism 5 is not within the preset settling velocity range for particles, the controller controls the alarm to sound an alarm.
number
[0031] The beneficial effects of the above proposed technology are as follows: The controller controls the operation of the alarm based on the density meter, the first temperature sensor, and the second temperature sensor. If the settling velocity of the particles generated when the wastewater is oxidized by the current reaction sedimentation mechanism 5 is not within the preset particle settling velocity range, the controller controls the alarm to sound an alarm, thereby alerting the operator to inspect the reaction sedimentation mechanism 5 in a timely manner. Based on the actual inspection results, maintenance is performed on the wastewater treatment device to maintain the operating requirements for the wastewater treatment device, while simultaneously ensuring the normal and stable operation and treatment efficiency of the entire wastewater treatment device, effectively improving the service life of the wastewater treatment device, and further meeting the operating requirements for reliability and stability of the wastewater treatment device. By monitoring the operating status of the wastewater treatment device in real time, the controller not only improves the efficiency and effectiveness of the wastewater treatment device but also ensures that the wastewater treatment device can be quickly identified and inspected in a timely manner after a malfunction.
[0032] Finally, it should be noted that the above embodiments are merely for illustrating the technical concepts of the present invention and do not limit them. While the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that it is still possible to modify the technical concepts described in the above embodiments or to make equivalent substitutions to some of their technical features. Such modifications or substitutions do not cause the essence of the corresponding technical concepts to deviate from the spirit and scope of the technical concepts in each embodiment of the present invention. [Explanation of symbols]
[0033] 1. Filtration box 1-1 Filtration box entrance 2 cabinets 3 Heating mechanism 4. First liquid transport pipeline 5. Reaction and precipitation mechanism 6 Flow guide plate 7 Filter net 8 Slag discharge ports 9. First valve 10. Second liquid transport pipeline 11 Heating box 12 Intake pipe 13 Exhaust pipe 14 Heating bent pipe 15 Water pump 16. Second valve 17 Liquid level gauge 18 Processing tanks 18-1 Outlet 19 Liquid storage box 20 Third liquid transport pipeline 21 Auxiliary Box 22 Drive Assembly 23 Drive motor 24-turn disc 25 Hinge Rod 26 First groove 27 Second groove 28 First slide groove 28-1 First Slider 29 L-shaped rod 30 Slide Rods 30-1 Second Slider 31 Connection Blocks 32 Support rods 33 Third groove 34 Second slide groove 35 drive racks 36 Drive shaft 37 Drive gear 38 Stirring rod 39 Connection bracket 40 fixed sleeves 41 Guide Rod 42 Retaining ring 43 Mounting block 44 Springs 45 Cleaning brush
Claims
1. A wastewater treatment device for a gas turbine thermal power plant, comprising a filtration box (1), the filtration box (1) being fixedly mounted to the side wall inside a housing (2), a filtration assembly being installed inside the filtration box (1), a heating mechanism (3) being installed at the bottom inside the housing (2), and the liquid outlet at the bottom of the filtration box (1) and the heating mechanism (3) being in communication via a first liquid transport pipeline (4), a reaction precipitation mechanism (5) being installed on one side of the heating mechanism (3), and the reaction precipitation mechanism (5) and the heating mechanism (3) being in communication via a second liquid transport pipeline (10), characterized in that it includes a filtration box (1), the filtration box (1) being fixedly mounted to the side wall inside a housing (2), a filtration assembly being installed inside the filtration box (1), a heating mechanism (3) being installed at the bottom inside the housing (2), and the heating mechanism (3) being in communication via a first liquid transport pipeline (4), and the wastewater treatment device for a gas turbine thermal power plant.
2. The filtration assembly includes a flow guide plate (6) and a filter screen (7), the flow guide plate (6) being positioned above the filter screen (7), the flow guide plate (6) and the filter screen (7) being installed in the filtration box (1) at a certain angle of inclination, one side of the flow guide plate (6) being fixedly attached to one inner wall of the filtration box (1), the other side of the flow guide plate (6) being inclined downward and having a predetermined distance between it and the other inner wall of the filtration box (1), and the The wastewater treatment device for a gas turbine thermal power plant according to claim 1, characterized in that both sides of the filter screen (7) are fixedly attached to the inner wall of the filter box (1), the higher side of the filter screen (7) is located below the lower side of the guide plate (6), the lower side of the filter screen (7) is located below the higher side of the guide plate (6), and the filter box (1) is provided with a slag outlet (8) on the lower side of the filter screen (7), and a first valve (9) is connected to the first liquid transport pipeline (4).
3. The heating mechanism (3) includes a heating box (11), the bottom of which is fixedly attached to the bottom of the housing (2), the housing (2) is provided with an intake pipe (12) and an exhaust pipe (13), the intake pipe (12) is located above the exhaust pipe (13) and separated by a predetermined distance, both the intake pipe (12) and the exhaust pipe (13) penetrate the side walls of the housing (2) and the heating box (11), a heating bend pipe (14) is installed in the cavity of the heating box (11), the intake port of the heating bend pipe (14) is connected to the intake pipe (12), and the exhaust port of the heating bend pipe (14) is connected to the exhaust pipe ( The wastewater treatment device for a gas turbine thermal power plant according to claim 1, characterized in that it is connected to (13), a water pump (15) is fixedly mounted on the top of the heating box (11), the water inlet of the second liquid transport pipeline (10) is installed in the lower part inside the heating box (11), the water pump (15) is further fixedly connected to the second liquid transport pipeline (10), a second valve (16) is provided on the outlet side of the water pump (15) in the second liquid transport pipeline (10), and a liquid level gauge (17) is further fixedly connected to the portion of the second liquid transport pipeline (10) located inside the heating box (11).
4. The reaction precipitation mechanism (5) includes a treatment tank (18), the treatment tank (18) is fixedly mounted to the bottom of the housing (2), a liquid storage box (19) is fixedly mounted to the outer wall of the filtration box (1), the liquid outlet of the liquid storage box (19) communicates with a liquid inlet at the top of the treatment tank (18) via a third liquid transport pipeline (20), the liquid outlet of the second liquid transport pipeline (10) communicates with a liquid inlet at the side wall of the treatment tank (18), an auxiliary box (21) is fixedly mounted to the top of the treatment tank (18), a drive assembly (22) is installed inside the auxiliary box (21), a stirring assembly and a cleaning assembly are installed inside the treatment tank (18), the stirring assembly and the cleaning assembly are connected to and driven by the drive assembly (22), as described in claim 1.
5. The drive assembly (22) includes a drive motor (23), the drive motor (23) is fixedly mounted to the inner wall of the auxiliary box (21), a turntable (24) is fixedly mounted to the output shaft of the drive motor (23), a hinge rod (25) is fixedly connected to the center of the turntable (24) away from the turntable (24), and a first groove (26) and a second groove (27) are provided on the top of the auxiliary box (21). The top of the first slide groove (28) is slidably connected to the first recessed groove (26), the hinge rod (25) is slidably connected to the first slide groove (28), one end of the L-shaped rod (29) is fixedly connected to the first slide groove (28), and the other end of the L-shaped rod (29) is installed facing downwards and passing through the side of the auxiliary box (21), and the L-shaped rod (29) is installed within the auxiliary box (21) A waste liquid treatment device for a gas turbine thermal power plant according to claim 4, characterized in that a slide rod (30) is fixedly connected to the part in which it is located, the upper end of the slide rod (30) is slidably connected in the second groove (27), a connecting block (31) is provided inside the auxiliary box (21), support rods (32) are fixedly connected to both side walls of the connecting block (31), a third groove (33) is provided on both sides of the connecting block (31) on the inner wall of the auxiliary box (21), one end of each support rod (32) is fixedly connected to the side wall of the connecting block (31), one end of each support rod (32) is slidably connected in one of the third grooves (33), a second inclined slide groove (34) is provided in the connecting block (31), and the lower end of the slide rod (30) is slidably connected to the second slide groove (34).
6. The agitation assembly includes a drive rack (35), both ends of which slide through the side walls of the auxiliary box (21), and one end of the drive rack (35) is fixedly connected to the lower end of the L-shaped rod (29), and a drive shaft (36) is rotatably connected to the top of the processing tank (18), and the lower end of the drive shaft (36) penetrates the top of the processing tank (18), and an agitation rod (38) is fixedly attached to the lower end of the drive shaft (36), and a drive gear (37) is fixedly attached to the upper end of the drive shaft (36), and the drive gear (37) meshes with the drive rack (35), as described in claim 5, for waste liquid treatment equipment for a gas turbine thermal power plant.
7. The cleaning assembly includes a connecting bracket (39), the top of which is fixedly connected to the connecting block (31), and the connecting bracket (39) passes through the auxiliary box (21), and the connecting bracket (39) and the opening in the auxiliary box (21) through which the connecting bracket (39) passes are slidably connected, and two fixing sleeves (40) are fixedly mounted symmetrically inside the processing tank (18), with the upper and lower ends of each fixing sleeve (40) being the top of the processing tank (18) The connecting bracket (39) is fixedly attached to the top and bottom of the processing tank (18), and a guide rod (41) is fixedly connected to each fixing sleeve (40). The upper end of the guide rod (41) is fixedly connected to the top of the fixing sleeve (40), and the lower end of the guide rod (41) is fixedly connected to the bottom of the fixing sleeve (40). The lower end of the connecting bracket (39) penetrates the top of the processing tank (18), and the connecting bracket (39) and the opening made in the processing tank (18) through which the connecting bracket (39) passes are slidably connected. The lower end of the connecting bracket (39) is slidably connected to the guide rod (41), and a plurality of mounting blocks (43) are slidably connected to each guide rod (41). Springs (44) are fitted on the guide rod (41) between adjacent mounting blocks (43), between the uppermost mounting block (43) and the lower end of the connecting bracket (39), and between the lowermost mounting block (43) and the bottom of the processing tank (18). The number of mounting blocks (43) on two guide rods (41) is the same, and two The wastewater treatment device for a gas turbine thermal power plant according to claim 6, characterized in that the heights at which mounting blocks (43) of the same number are located on two guide rods (41) are the same, a fixing ring (42) is fixedly connected to the outer circumference of each pair of mounting blocks (43) of the same height, a cleaning brush (45) is fixedly attached to the side wall of the fixing ring (42) facing the inner wall of the treatment tank (18), the cleaning brush (45) is in contact with the inner wall of the treatment tank (18), and an outlet (18-1) is installed at the bottom of the treatment tank (18).
8. The reaction precipitation mechanism (5) further includes a reaction performance detection device for detecting the operating state when the waste liquid is subjected to an oxidation reaction, and the reaction performance detection device is A densimeter for detecting the density of the precipitate formed by the reaction at the bottom of the processing tank (18), A first temperature sensor for detecting the temperature of waste liquid being transported in a second liquid transport pipeline (10), A second temperature sensor for detecting the temperature of the waste liquid output from the treatment tank (18) after the waste liquid has undergone reaction and sedimentation treatment, A wastewater treatment device for a gas turbine thermal power plant according to claim 1, comprising a controller and an alarm, wherein the controller is electrically connected to a densimeter, a first temperature sensor, a second temperature sensor and an alarm, and the controller controls the operation of the alarm based on data collected by the densimeter, the first temperature sensor and the second temperature sensor, and the alarm.
9. The controller controls the operation of the alarm based on the density meter, the first temperature sensor, and the second temperature sensor. Based on the following formula and the detection values of the density meter, the first temperature sensor, and the second temperature sensor, the controller calculates the settling velocity V of the particles generated when the waste liquid is oxidized by the reaction sedimentation mechanism (5). The controller compares the current settling velocity V of the particles generated when the waste liquid is oxidized by the reaction sedimentation mechanism (5) with a preset particle settling velocity range. If the current settling velocity V of the particles generated when the waste liquid is oxidized by the reaction sedimentation mechanism (5) is not within the preset particle settling velocity range, the controller controls the alarm to sound an alarm. [Math 1] Here, V is the settling velocity of the particles generated when the waste liquid is treated by the oxidation reaction mechanism 5, ψ is the mass correction factor (typical values are 0.08 to 0.1), g is the acceleration due to gravity, A is the cross-sectional area of the treatment tank 18, and ρ １ This is the value detected by the densimeter relative to the density of the precipitate produced by the bottom reaction of the processing tank 18, and ρ ０ This is the density of the waste liquid, C ｄ k is the drag coefficient in the free sedimentation process (which can be obtained by experimental measurement), k is the temperature correction coefficient (the range of values is 1.1 to 1.3), and T １ This is the value detected by the first temperature sensor for the temperature of the waste liquid transported in the second liquid transport pipeline 10, and T ２ This is the value detected by the second temperature sensor for the temperature of the waste liquid output from the treatment tank 18 after the waste liquid has undergone reaction and sedimentation treatment, where Re is the Reynolds number (value is 2 - 2.3 × 10⁻¹⁰). ３ The waste liquid treatment device for a gas turbine thermal power plant according to claim 8, wherein μ is the power viscosity coefficient (unit: Pa·S, obtained by table lookup), and D is the diameter of the second liquid transport pipeline 10.