Wastewater treatment device by replacing lime with carbide slag
By using carbide slag instead of lime, combined with a configuration tank and an optimized stirring, nitrogen protection, and sedimentation system, the problems of high cost and poor dewatering performance of traditional lime treatment are solved, achieving efficient and low-cost wastewater treatment that meets environmental protection requirements.
Patent Information
- Application Number
- CN202423209036.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Traditional lime wastewater treatment methods are costly and have poor sludge dewatering performance, increasing the economic and time costs for enterprises. At the same time, the difficulty of subsequent treatment of lime wastewater leads to increased environmental disposal pressure.
Using calcium carbide slag instead of lime as a raw material for wastewater treatment, a device was designed that includes a mixing tank, a stirring assembly, a nitrogen pipeline, an exhaust assembly, and a slag discharge system. The device ensures reaction stability by utilizing the uniform mixing of calcium carbide slag and water and nitrogen protection, and improves treatment efficiency and safety through an optimized sedimentation structure and gas purification system.
It reduced raw material procurement costs, improved the efficiency and quality of wastewater treatment, reduced equipment maintenance and repair costs, ensured environmental performance and ease of operation, met environmental regulations, and avoided environmental pollution.
Smart Images
Figure CN223892567U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to industrial wastewater treatment equipment technical field, especially point to a kind of calcium carbide slag instead of lime wastewater treatment device. BACKGROUND
[0002] In the modern industrial process, chemical industry, non-ferrous metal industry and thermal power desulfurization field play a vital role, but at the same time, they have become the main source of wastewater and waste gas, with the continuous enhancement of environmental awareness and the continuous rise of water resource utilization rate pressure, proper handling of these wastewater and waste gas has become the responsibility of enterprise, if not handled properly, harmful substances contained therein will cause serious pollution to the environment, threaten ecological balance and human health.
[0003] At present, in the acid-base neutralization and treatment link of wastewater, sodium hydroxide and lime and other chemical agents are widely used, however, this traditional treatment method brings many problems. On the one hand, the procurement cost of these chemical agents is high, and enterprises need to invest a lot of funds in environmental disposal, which undoubtedly increases the economic burden of enterprises, compresses the profit space of enterprises, and further constitutes a severe challenge to the survival and development of enterprises, on the other hand, after using lime and other agents to treat wastewater, the dewatering and sedimentation performance of the generated sediment is poor, and the subsequent treatment is difficult, further increasing the treatment cost and time cost.
[0004] Therefore, the present application provides a calcium carbide slag instead of lime wastewater treatment device to solve the above technical problems. CONTENT OF UTILITY MODEL
[0005] In view of the deficiencies in the above background art, the utility model provides a calcium carbide slag instead of lime wastewater treatment device, which solves the technical problems that on the one hand, the procurement cost of these chemical agents is high, and enterprises need to invest a lot of funds in environmental disposal, which undoubtedly increases the economic burden of enterprises, compresses the profit space of enterprises, and further constitutes a severe challenge to the survival and development of enterprises, on the other hand, after using lime and other agents to treat wastewater, the dewatering and sedimentation performance of the generated sediment is poor, and the subsequent treatment is difficult, further increasing the treatment cost and time cost.
[0006] The technical scheme of the utility model is achieved as follows: a calcium carbide residue replaces lime wastewater treatment device, which comprises a configuration pool and a calcium carbide residue raw material vehicle, characterized in that: a nitrogen gas pipeline, a production water pipeline and a recycled water pipeline are connected to the top of the configuration pool respectively, wherein the extending end of the nitrogen gas pipeline extends into the bottom of the configuration pool, a calcium carbide residue slurry conveying pipeline is connected to one end of the side wall of the configuration pool, and a residue discharge pipeline is connected to the other end, a calcium carbide residue conveying pump is arranged on the calcium carbide residue slurry conveying pipeline, an exhaust assembly is arranged on the top of the configuration pool and is used for discharging the gas in the configuration pool, a calcium carbide residue raw material conveying pipeline is arranged between the configuration pool and the calcium carbide residue raw material vehicle, a stirring assembly is arranged on the configuration pool and is used for mixing the internal raw materials, and a plurality of exhaust holes are arranged on the top of the configuration pool.
[0007] As a preferred scheme, the exhaust assembly comprises a venting cylinder, an induced draft fan, a dust remover and a liquid separation tank, the venting cylinder, the induced draft fan, the dust remover and the liquid separation tank are sequentially connected in series, and the top of the configuration pool is connected with the input end of the liquid separation tank through a gas conveying pipeline.
[0008] As a preferred scheme, the stirring assembly comprises a stirring paddle rotatably connected to the inside of the configuration pool and an electric motor fixedly connected to the top of the configuration pool, the stirring paddle is driven by the electric motor, and the electric motor is electrically connected with a controller.
[0009] As a preferred scheme, the top of the configuration pool is connected with a backflow pipeline communicated with the calcium carbide residue slurry conveying pipeline, and a valve is arranged on the backflow pipeline.
[0010] As a preferred scheme, a flow regulating valve is arranged on the nitrogen gas pipeline.
[0011] As a preferred scheme, a waste residue collecting container is connected to the outlet end of the residue discharge pipeline, and the waste residue collecting container is provided with a detachable sealing cover.
[0012] As a preferred scheme, the material of the calcium carbide residue slurry conveying pipeline is polytetrafluoroethylene which is corrosion resistant.
[0013] As a preferred scheme, a plurality of layers of filter media are arranged in the dust remover, including an activated carbon fiber layer and a glass fiber filter paper layer, and the activated carbon fiber layer is located on the side close to the input end.
[0014] As a preferred scheme, a corrosion-resistant and wear-resistant coating is arranged on the surface of the blade of the stirring paddle.
[0015] As a preferred scheme, the valve is an electric regulating valve and is electrically connected with a liquid level sensor in the configuration pool.
[0016] The utility model has the advantages of:
[0017] I. Significant cost-effectiveness improvement
[0018] Raw material cost reduction: Using carbide slag instead of lime as the raw material for wastewater treatment, fully utilizing the industrial byproduct carbide slag, which has a relatively low cost. Compared with the traditional lime treatment method, the raw material procurement cost is greatly reduced, effectively reducing the economic investment of enterprises in wastewater treatment, and achieving a certain degree of cost savings while ensuring environmental governance.
[0019] Equipment maintenance cost reduction: The optimized design of multiple components in the device reduces maintenance costs. For example, the carbide slag slurry pipeline made of corrosion-resistant polytetrafluoroethylene material can effectively resist the corrosion of carbide slag slurry, greatly extending the service life of the pipeline and reducing the frequency of replacement due to corrosion leakage, thereby reducing equipment repair costs. The anti-corrosion and wear-resistant coating on the surface of the stirring blade improves the durability of the stirring blade, reducing the failure of the stirring assembly due to wear and corrosion, and reducing the maintenance frequency and cost. In addition, the optimized exhaust assembly and slag discharge system reduce the additional repair and cleaning costs caused by equipment failure and waste slag leakage, etc.
[0020] II. Optimization of treatment efficiency and quality
[0021] Stable and standard wastewater treatment effect: The stirring assembly in the configuration tank ensures that the carbide slag and water are fully mixed, making the reaction more uniform and efficient. By precisely controlling the nitrogen gas inflow (with the help of the flow regulating valve on the nitrogen gas pipeline), a stable reaction environment is created for the carbide slag solution, preventing adverse effects such as carbide slag oxidation, ensuring the quality of the solution, and ensuring that the carbide slag and wastewater in the wastewater treatment reaction tank can fully and stably react, effectively removing acidic or alkaline substances and other pollutants in the wastewater. The pH value after the reaction is strictly controlled within the range of 6-9, ensuring that the treated wastewater meets the discharge standards or meets the subsequent reuse requirements. The treatment effect is comparable or even better than the traditional lime treatment method, ensuring the quality and stability of the wastewater treatment of enterprises, helping enterprises better meet environmental regulations and avoid environmental risks and economic penalties due to water quality problems.
[0022] Improved efficiency of sediment treatment: The design of the slag discharge pipeline at the bottom of the configuration tank and the waste slag collection container facilitates the timely and effective discharge of impurities generated during the configuration process, ensuring the purity of the carbide slag solution and facilitating subsequent reactions and sedimentation. The rational design of the inclined plate sedimentation structure and the characteristics of rapid sedimentation (the sedimentation speed is 2-3 times faster than that of lime treatment) accelerate the solid-liquid separation process and improve the sedimentation efficiency. The sealed design of the waste slag collection container prevents secondary pollution caused by waste slag leakage, and facilitates the centralized treatment of waste slag, further improving the efficiency and environmental friendliness of the waste slag treatment process in the entire wastewater treatment process.
[0023] III. Enhanced stability and safety of device operation
[0024] Stable reaction environment: The reasonable layout of nitrogen gas pipelines and the setting of flow regulating valves can accurately adjust the nitrogen flow according to actual needs, forming a stable nitrogen protective layer in the configuration pool, effectively isolating air, avoiding the reaction of calcium carbide slag with oxygen and other components in the air, ensuring the stability and reactivity of the calcium carbide slag solution, providing a stable chemical environment for the entire wastewater treatment process, reducing problems such as unstable treatment effect caused by fluctuations in reaction conditions, and enhancing the stability of device operation.
[0025] Liquid level control and device protection: The electric regulating valve connected with the liquid level sensor on the backflow pipeline realizes automatic monitoring and control of the liquid level in the configuration pool. When the liquid level is abnormal (too high or too low), it can timely adjust the on-off of the backflow pipeline, prevent the solution from overflowing or the conveying pipeline from being empty, avoid safety accidents such as equipment damage and solution leakage caused by out-of-control liquid level, improve the safety of device operation, prolong the service life of equipment, and also ensure the continuity and stability of the wastewater treatment process.
[0026] IV. Improved environmental performance
[0027] Gas emission purification: The multi-layer filter medium (activated carbon fiber layer and glass fiber filter paper layer) design inside the dust collector in the exhaust assembly can effectively remove various pollutants in the gas phase, including organic pollutants, fine particulate matter, etc.; the activated carbon fiber layer first adsorbs organic pollutants and other harmful substances in the gas phase, and the glass fiber filter paper layer further filters fine particulate matter, greatly improving the gas purification effect, ensuring that the final discharged gas meets environmental standards, reducing pollution to the atmospheric environment, improving the environmental performance of the device, and helping enterprises achieve green and environmentally friendly emissions in the production process.
[0028] Optimized waste residue treatment: The design of the waste residue collection container and the sealing cover connected to the residue discharge pipeline prevents leakage of waste residue during collection and temporary storage, avoiding pollution of the surrounding environment by waste residue, while the detachable sealing cover facilitates regular cleaning and subsequent treatment of waste residue, allowing waste residue to be properly disposed of, further reducing environmental risks during wastewater treatment, and achieving effective management and environmental treatment of waste residue.
[0029] V. Improved operational convenience
[0030] Intelligent control simplifies operation: the electrical connection of the motor and the controller in the stirring assembly realizes intelligent control of parameters such as the stirring paddle rotation speed, the operator can flexibly adjust the stirring intensity according to actual needs, the convenience and flexibility of device operation are improved, the liquid level sensor and the electric regulating valve work cooperatively to realize automatic control of the on-off of the reverse flow pipeline, manual intervention is reduced, the labor intensity and operation difficulty of the operator are reduced, and the operation of the device is more automated and intelligent.
[0031] Device maintenance convenience is improved: the optimized design of each component improves the performance of the device while also considering the convenience of maintenance. For example, the detachable waste residue collection container sealing cover facilitates waste residue cleaning, the coating on the surface of the stirring paddle extends the service life while also reducing downtime caused by maintenance, and the reasonable layout of the filter medium in the exhaust assembly facilitates replacement and maintenance. These designs make daily maintenance and repair of the device more convenient, reduce the impact of device maintenance on production, and improve the overall operation efficiency of the device.
[0032] Other advantages, objects and features of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art from examination of the following, or can be learned by practice of the present application, based on the examination of the following. BRIEF DESCRIPTION OF DRAWINGS
[0033] In order to more clearly illustrate the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0034] Figure 1 It is a whole structure schematic view of the present application.
[0035] In the figure: 1: configuration pool, 2: calcium carbide slag raw material vehicle, 3: nitrogen pipeline, 4: production water pipeline, 5: recycled water pipeline, 6: calcium carbide slag slurry conveying pipeline, 7: slag discharge pipeline, 8: calcium carbide slag conveying pump, 9: calcium carbide slag raw material conveying pipeline, 10: exhaust hole, 11: emptying cylinder, 12: induced draft fan, 13: dust collector, 14: liquid separator, 15: gas conveying pipeline, 16: stirring paddle, 17: motor, 18: reverse flow pipeline, 19: valve. DETAILED DESCRIPTION
[0036] The following will combine the drawings in the embodiments of the present application to Figure 1In order to clearly and completely describe the technical solutions in the embodiments of the present application, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0037] The embodiment 1 is a wastewater treatment device using carbide slag instead of lime, which comprises a configuration pool 1 and a carbide slag raw material vehicle 2, and is characterized in that: the top of the configuration pool 1 is connected with a nitrogen pipeline 3, a production water pipeline 4 and a recycled water pipeline 5 respectively, wherein the extending end of the nitrogen pipeline 3 extends into the bottom of the configuration pool 1; one end of the side wall of the configuration pool 1 is connected with a carbide slag slurry conveying pipeline 6, and the other end is connected with a slag discharge pipeline 7; the carbide slag slurry conveying pipeline 6 is provided with a carbide slag conveying pump 8; the top of the configuration pool 1 is provided with an exhaust assembly for discharging the gas inside the configuration pool 1; a carbide slag raw material conveying pipeline 9 is arranged between the configuration pool 1 and the carbide slag raw material vehicle 2; the configuration pool 1 is provided with a stirring assembly for mixing the internal raw materials; and the top of the configuration pool 1 is provided with a plurality of exhaust holes 10.
[0038] As a further embodiment, the exhaust assembly comprises a venting cylinder 11, an air induction fan 12, a dust remover 13 and a liquid separation tank 14, which are sequentially connected in series, wherein the top of the configuration pool 1 is connected with the input end of the liquid separation tank 14 through a gas conveying pipeline 15.
[0039] As a further embodiment, the stirring assembly comprises a stirring paddle 16 rotatably connected inside the configuration pool 1 and an electric motor 17 fixedly connected at the top, the stirring paddle 16 is driven by the electric motor 17, and the electric motor 17 is electrically connected with a controller.
[0040] As a further embodiment, the blade surface of the stirring paddle 16 is provided with a corrosion-resistant and wear-resistant coating.
[0041] As a further embodiment, the dust remover 13 is internally provided with multiple layers of filter media, including an activated carbon fiber layer and a glass fiber filter paper layer, and the activated carbon fiber layer is located close to the input end.
[0042] I. In use, the configuration pool is connected with related components: the configuration pool 1 is one of the core reaction areas of the whole device, the top of which is connected with a nitrogen pipeline 3, a production water pipeline 4, a recycled water pipeline 5 and a gas delivery pipeline 15, the side wall is connected with a carbide slag slurry delivery pipeline 6 and a slag discharge pipeline 7, the nitrogen pipeline 3 extends into the bottom of the configuration pool 1 for introducing nitrogen into the pool to create a sealed protective environment, the production water pipeline 4 and the recycled water pipeline 5 provide water source for the configuration of the carbide slag solution, the carbide slag delivery pump 8 on the carbide slag slurry delivery pipeline 6 is responsible for delivering the configured solution, and the slag discharge pipeline 7 is used for discharging impurities accumulated at the bottom of the configuration pool 1.
[0043] The configuration pool 1 and the carbide slag raw material vehicle 2 are connected through a carbide slag raw material delivery pipeline 9 to realize the delivery of the carbide slag raw material, the top of the configuration pool 1 is provided with a plurality of exhaust holes 10 to assist in discharging the internal gas, and is also provided with an exhaust assembly, the exhaust assembly is sequentially connected by a venting cylinder 11, an induced draft fan 12, a dust collector 13 and a liquid separation tank 14, the gas delivery pipeline 15 connects the top of the configuration pool 1 with the input end of the liquid separation tank 14 for discharging the gas generated in the configuration pool 1 and performing purification treatment.
[0044] The stirring assembly: the stirring assembly is located inside the configuration pool 1 and includes a stirring paddle 16 and a top motor 17, the stirring paddle 16 is drivingly connected with the motor 17, the motor 17 is controlled by a controller, and the blade surface of the stirring paddle 16 is provided with a corrosion-resistant and wear-resistant coating to enhance its durability.
[0045] II. Working principle
[0046] Solution configuration stage: first, the carbide slag raw material enters the configuration pool 1 from the carbide slag raw material vehicle 2 through the carbide slag raw material delivery pipeline 9, at the same time, the production water or the recycled water can enter the configuration pool 1 through the production water pipeline 4 and the recycled water pipeline 5 respectively, the recycled water is preferred to be used here, that is, when the recycled water pipeline 5 is watered, the production water pipeline 4 is prohibited from being watered, and the production water pipeline 4 and the recycled water pipeline 5 are both provided with valves to realize the above functions.
[0047] The motor 17 is started to drive the stirring paddle 16 to rotate, so that the carbide slag is fully mixed with water to form a uniform solution, and in the stirring process, nitrogen is continuously introduced into the bottom of the configuration pool 1 through the nitrogen pipeline 3 to form a nitrogen protective layer to prevent the carbide slag from reacting with oxygen and other components in the air to ensure the stability and reactivity of the solution.
[0048] Solution delivery stage: the configured carbide slag solution is delivered to the subsequent wastewater treatment reaction pool (the subsequent reaction pool part is not shown in detail in the figure, but this is the next step in the overall treatment process) under the action of the carbide slag delivery pump 8 along the carbide slag slurry delivery pipeline 6.
[0049] Gas treatment stage: the gas generated in the configuration pool 1 enters the exhaust assembly through the gas delivery pipeline 15, the induced draft fan 12 provides power, so that the gas enters the liquid separation tank 14 and the dust remover 13 in turn, in the liquid separation tank 14, part of the liquid component in the gas is separated out, then the gas enters the dust remover 13, the activated carbon fiber layer in the dust remover 13 first adsorbs the organic pollutants in the gas phase, and the glass fiber filter paper layer further filters the fine particulate matter, and the purified gas is finally discharged into the atmosphere through the venting cylinder 11.
[0050] In example 2, a calcium carbide slag replaces a lime wastewater treatment device, based on example 1, the configuration pool 1 is connected with the backflow pipeline 18 communicated with the calcium carbide slag slurry delivery pipeline 6 at the top, and the valve 19 is arranged on the backflow pipeline 18.
[0051] As a further embodiment, the valve 19 is an electric regulating valve, and is electrically connected with the liquid level sensor in the configuration pool 1.
[0052] As a further embodiment, the outlet end of the slag discharge pipeline 7 is connected with the waste slag collection container, and the waste slag collection container is provided with a detachable sealing cover.
[0053] As a further embodiment, the material of the calcium carbide slag slurry delivery pipeline 6 is corrosion-resistant polytetrafluoroethylene.
[0054] I. Backflow pipeline and related components
[0055] Based on example 1, the configuration pool 1 is connected with the backflow pipeline 18 communicated with the calcium carbide slag slurry delivery pipeline 6 at the top, and the valve 19 is arranged on the backflow pipeline 18, the valve 19 is an electric regulating valve, and is electrically connected with the liquid level sensor in the configuration pool 1.
[0056] Waste slag collection container: the outlet end of the slag discharge pipeline 7 is connected with the waste slag collection container, and the waste slag collection container is provided with a detachable sealing cover.
[0057] Improved delivery pipeline material: the material of the calcium carbide slag slurry delivery pipeline 6 is corrosion-resistant polytetrafluoroethylene.
[0058] II. Working principle (supplement based on the principle of example 1)
[0059] Liquid level control and backflow protection: The liquid level sensor monitors the liquid level in the configuration pool 1 in real time. When abnormal situations occur, such as high liquid level that may cause solution overflow or low liquid level that may cause the delivery pump to run empty, the liquid level sensor transmits a signal to the controller. The controller controls the electric regulating valve 19 to open or close the backflow pipeline 18. When backflow is needed, the solution can flow back through the backflow pipeline 18 to the appropriate location, such as back to the configuration pool 1 or other designated temporary storage area, thereby protecting the equipment and ensuring the safe and stable operation of the device.
[0060] Waste slag collection and treatment: The impurities at the bottom of the configuration pool 1 are discharged through the slag discharge pipeline 7 into the waste slag collection container. The detachable sealing cover of the waste slag collection container is designed to facilitate cleaning when the waste slag accumulates to a certain extent. The sealing cover is kept closed at ordinary times to prevent waste slag leakage and environmental pollution.
[0061] Corrosion-resistant delivery guarantee: Due to the corrosive nature of calcium slag slurry, the calcium slag slurry delivery pipeline 6 made of corrosion-resistant polytetrafluoroethylene material can effectively resist corrosion, ensuring that the solution does not leak during transportation and ensuring the continuous and stable operation of the entire device, reducing equipment failures and maintenance costs caused by pipeline corrosion.
[0062] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and similar terms should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0063] Although the embodiments of the application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.
Claims
1. A wastewater treatment device for replacing lime with carbide slag, comprising a mixing tank (1) and a carbide slag raw material vehicle (2), characterized in that: The top of the preparation tank (1) is connected to a nitrogen pipeline (3), a production water pipeline (4), and a recycled water pipeline (5), respectively. The protruding end of the nitrogen pipeline (3) extends into the bottom of the preparation tank (1). One end of the side wall of the preparation tank (1) is connected to a carbide slag slurry conveying pipeline (6), and the other end is connected to a slag discharge pipeline (7). A carbide slag conveying pump (8) is provided on the carbide slag slurry conveying pipeline (6). An exhaust assembly is provided on the top of the preparation tank (1) to exhaust the gas inside the preparation tank (1). A carbide slag raw material conveying pipeline (9) is provided between the preparation tank (1) and the carbide slag raw material vehicle (2). A stirring assembly is provided in the preparation tank (1) to mix the internal raw materials. Several exhaust holes (10) are provided on the top of the preparation tank (1).
2. The wastewater treatment device for replacing lime with carbide slag according to claim 1, characterized in that, The exhaust assembly includes a venting cylinder (11), an induced draft fan (12), a dust collector (13), and a liquid separator (14). The venting cylinder (11), the induced draft fan (12), the dust collector (13), and the liquid separator (14) are connected in series. The top of the configuration tank (1) is connected to the input end of the liquid separator (14) via a gas delivery pipeline (15).
3. The wastewater treatment device for replacing lime with carbide slag according to claim 1, characterized in that, The stirring assembly includes a stirring paddle (16) rotatably connected inside the configuration tank (1) and a motor (17) fixedly connected to the top. The stirring paddle (16) is driven by the motor (17), and the motor (17) is electrically connected to the controller.
4. The wastewater treatment device for replacing lime with carbide slag according to claim 1, characterized in that, The top of the configuration tank (1) is connected to a backflow pipe (18) that communicates with the carbide slag slurry conveying pipeline (6), and a valve (19) is provided on the backflow pipe (18).
5. The wastewater treatment device for replacing lime with carbide slag according to claim 1, characterized in that, The nitrogen pipeline (3) is equipped with a flow regulating valve.
6. The wastewater treatment device for replacing lime with carbide slag according to claim 1, characterized in that, The outlet end of the slag discharge pipeline (7) is connected to a waste slag collection container, which is equipped with a removable sealing cover.
7. The wastewater treatment device for replacing lime with carbide slag according to claim 1, characterized in that, The material of the carbide slag slurry conveying pipeline (6) is corrosion-resistant polytetrafluoroethylene.
8. The wastewater treatment device for replacing lime with carbide slag according to claim 2, characterized in that, The dust collector (13) is equipped with multiple layers of filter media, including an activated carbon fiber layer and a glass fiber filter paper layer, with the activated carbon fiber layer located on the side closer to the input end.
9. A wastewater treatment device for replacing lime with carbide slag according to claim 3, characterized in that, The blades of the impeller (16) are coated with an anti-corrosion and wear-resistant coating.
10. A wastewater treatment device for replacing lime with carbide slag according to claim 4, characterized in that, The valve (19) is an electric regulating valve and is electrically connected to the liquid level sensor in the configuration tank (1).