Papermaking wastewater collecting device and wastewater treatment system

Abstract

The utility model relates to a kind of papermaking sewage collecting device and sewage treatment system, including collecting well;Primary sedimentation tank, collecting well is communicated with primary sedimentation tank by pipeline;Lifting pump, lifting pump is set on the pipeline between collecting well and primary sedimentation tank, and lifting pump is used to transport water in collecting well to primary sedimentation tank;Filter, filter is set on the pipeline between collecting well and lifting pump, and filter is used to filter impurity in sewage;Stirring mechanism, stirring mechanism is set in collecting well, and stirring mechanism is used to stir sewage in collecting well, to reduce silt deposition;And drive mechanism, drive mechanism is drivingly connected with stirring mechanism, and drive mechanism is used to provide power to stirring mechanism, to drive stirring mechanism to stir. Through stirring mechanism to stir sewage in collecting well, suspended solids and sludge in sewage can not be deposited in the bottom of collecting well, reduce the phenomenon of silt at the bottom of pond, thereby reduce the risk of sewage overflow and secondary pollution due to silt.

Description

Technical Field

[0001] This utility model relates to the field of papermaking wastewater treatment technology, and in particular to a papermaking wastewater collection device and wastewater treatment system. Background Technology

[0002] Papermaking typically uses waste paper, straw, and wood pulp as raw materials. The pulping and papermaking process generally consists of pulping, washing, bleaching, and papermaking steps. Industrial pulping methods include alkaline pulping, chemimechanical pulping, and mechanical pulping. Papermaking generates wastewater, which, if discharged directly, will pollute the environment and is detrimental to environmental protection. Therefore, it is necessary to centrally and effectively treat the wastewater to ensure it meets discharge standards.

[0003] Since the wastewater in paper mill areas is generally gravity flow and the wastewater pipe elevation is low, the collection well can be used as the suction well for the booster pump. The booster pump can then lift the wastewater to the height required by the subsequent treatment unit so that the wastewater can flow smoothly into the subsequent treatment equipment.

[0004] Because the water collection wells collect water from a wide range of sources with complex water quality, the sewage contains a lot of suspended solids and sludge. In addition, the pool volume of the collection wells is small, and the bottom of the pool is prone to sludge accumulation, which can easily cause blockage of the water delivery pipes and lift pumps, making the lift pumps unable to work. Furthermore, the accumulation of sludge at the bottom of the pools causes sewage to overflow from the collection wells, resulting in secondary pollution, which is detrimental to the environment. Summary of the Invention

[0005] Therefore, there is a need to provide a wastewater collection device and wastewater treatment system for papermaking, which can solve the technical problems of small pool volume of the collection well, easy accumulation of mud at the bottom of the pool, easy blockage of water supply pipe and lift pump, resulting in the lift pump failing to work, and the overflow of wastewater from the collection well after the mud accumulates at the bottom of the pool, causing secondary pollution and being detrimental to environmental protection.

[0006] To achieve the above objectives, the inventors provide a wastewater collection device for papermaking, comprising:

[0007] Water collection well;

[0008] The primary sedimentation tank is connected to the collection well via a pipeline.

[0009] A booster pump is installed on the pipeline between the water collection well and the primary sedimentation tank. The booster pump is used to transport water from the water collection well to the primary sedimentation tank.

[0010] A filter is installed in the pipeline between the water collection well and the lift pump, and the filter is used to filter impurities in the sewage.

[0011] A stirring mechanism is provided inside the water collection well. The stirring mechanism is used to stir the sewage in the water collection well to reduce sludge deposition.

[0012] The system includes a drive mechanism that is connected to the stirring mechanism and provides power to the stirring mechanism to drive it to stir.

[0013] As a preferred structure of this utility model, the stirring mechanism includes a mounting frame, a stirring shaft, and multiple stirring plates;

[0014] The mounting bracket is disposed on the top of the water collection well, and the drive mechanism is disposed on the mounting bracket;

[0015] One end of the stirring shaft passes through the mounting frame and is connected to the drive mechanism for transmission, while the other end of the stirring shaft extends from top to bottom into the lower part of the water collection well;

[0016] Multiple stirring plates are respectively and staggeredly arranged on the stirring shaft, and one end of each stirring plate is fixedly connected to the stirring shaft.

[0017] As a preferred structure of this utility model, the water collection well includes a well body, a water inlet, a water outlet, and a sludge discharge outlet. The water inlet is located at the upper part of the well body, the water outlet is located at the lower middle part of the well body, and the sludge discharge outlet is located at the bottom of the well body.

[0018] As a preferred structure of this utility model, the water collection well further includes a leak-proof layer, which is disposed on the inner wall of the well body and is used to prevent sewage from leaking out.

[0019] As a preferred structure of this utility model, the papermaking wastewater collection device further includes a first liquid level detection mechanism and a control mechanism;

[0020] The first liquid level detection mechanism is located in the lower middle part of the water collection well. The first liquid level detection mechanism is electrically connected to the control mechanism, and the lift pump is electrically connected to the control mechanism. The first liquid level detection mechanism is used to detect the liquid level in the water collection well, and the control mechanism is used to receive and process the detection signal from the first liquid level detection mechanism and control the start and stop of the lift pump.

[0021] As a preferred structure of this utility model, the papermaking wastewater collection device further includes a second liquid level detection mechanism and an alarm mechanism;

[0022] The second liquid level detection mechanism is located in the upper part of the water collection well. The second liquid level detection mechanism is electrically connected to the control mechanism, and the alarm mechanism is electrically connected to the control mechanism. The second liquid level detection mechanism is used to detect the liquid level in the water collection well, and the alarm mechanism is used to issue an alarm. The control mechanism is also used to receive and process the detection signal of the second liquid level detection mechanism, and control the start and stop of the alarm mechanism.

[0023] As a preferred structure of this utility model, the filter is a Y-type filter.

[0024] Unlike existing technologies, the beneficial effects of the above technical solution are as follows: The wastewater collection device for papermaking of this utility model is equipped with a stirring mechanism inside the collection well. This stirring mechanism agitates the wastewater in the collection well, preventing suspended solids and sludge from settling at the bottom of the well, thus reducing sludge accumulation and lowering the risk of wastewater overflow and secondary pollution caused by sludge buildup. Furthermore, a filter is installed on the pipeline connecting the collection well and the booster pump. This filter effectively removes impurities from the wastewater, preventing them from entering the booster pump and subsequent pipelines, reducing the possibility of blockages in the booster pump and water supply pipelines. This further reduces the risk of wastewater overflow and secondary pollution caused by blockages in the booster pump and water supply pipelines, extends the service life of the booster pump, and lowers equipment maintenance costs.

[0025] To achieve the above objectives, the inventors provide a wastewater treatment system, including a papermaking wastewater collection device as described in any of the above-mentioned inventors' claims.

[0026] As a preferred embodiment of this invention, the wastewater treatment system further includes:

[0027] Acidification tank; the acidification tank is connected to the primary sedimentation tank of the papermaking wastewater collection device via a pipeline;

[0028] An anaerobic tank, which is connected to the acidification tank via a pipeline;

[0029] An oxidation tank, which is connected to the anaerobic tank via a pipeline;

[0030] And a final settling tank, which is connected to the oxidation tank via a pipeline.

[0031] As a preferred embodiment of this invention, the wastewater treatment system further includes:

[0032] A connecting pipeline, one end of which is connected to the acidification tank and the other end of which is connected to the oxidation tank;

[0033] And an outlet pump, which is installed on the connecting pipeline, is used to transport the wastewater in the acidification tank to the oxidation tank.

[0034] The advantages of the above technical solution, compared with existing technologies, are as follows: In the wastewater treatment system of this utility model, the papermaking wastewater collection device includes a stirring mechanism within the collection well. This mechanism stirs the wastewater in the collection well, preventing suspended solids and sludge from settling at the bottom, thus reducing sludge accumulation and lowering the risk of wastewater overflow and secondary pollution. Furthermore, a filter is installed on the pipeline connecting the collection well and the booster pump. This filter effectively removes impurities from the wastewater, preventing them from entering the booster pump and subsequent pipelines. This reduces the possibility of blockages in the booster pump and water supply pipelines, further lowering the risk of wastewater overflow and secondary pollution due to blockages, extending the service life of the booster pump, and reducing equipment maintenance costs.

[0035] The above description of the invention is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0036] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0037] In the accompanying drawings of the instruction manual:

[0038] Figure 1 This is a front view of the water collection well described in the specific embodiment;

[0039] Figure 2 This is a cross-sectional view of the water collection well described in the specific embodiment;

[0040] Figure 3 This is a front view of the papermaking wastewater collection device described in the specific embodiment;

[0041] Figure 4 This is a schematic diagram of the wastewater treatment system described in a specific implementation method;

[0042] Figure 5 The circuit connection diagram of the papermaking wastewater collection device described in the specific implementation method is shown below.

[0043] The reference numerals used in the above figures are explained as follows:

[0044] 1. Water collection well; 101. Well body; 102. Inlet; 103. Outlet; 104. Sludge discharge port; 105. Leak-proof layer.

[0045] 2. Primary sedimentation tank,

[0046] 3. Booster pump,

[0047] 4. Filter,

[0048] 5. Mixing mechanism, 501. Mounting bracket, 502. Mixing shaft, 503. Mixing plate.

[0049] 6. Drive mechanism,

[0050] 7. The first testing agency,

[0051] 8. Control mechanism,

[0052] 9. Second testing agency,

[0053] 10. Alarm system

[0054] 11. Acidification tank,

[0055] 12. Anaerobic tank,

[0056] 13. Oxidation tank,

[0057] 14. Final settling tank,

[0058] 15. Connect the pipes.

[0059] 16. Water pump. Detailed Implementation

[0060] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0061] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0062] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0063] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0064] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0065] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0066] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0067] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. These expressions are only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, in this context, it should be understood that when it is mentioned that an element is connected "on" or "below" another element, it can be directly connected not only to the other element "on" or "below," but also indirectly connected to the other element "on" or "below" through an intermediate element.

[0068] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0069] Please see Figures 1 to 5 This embodiment relates to a papermaking wastewater collection device, including a collection well 1, a primary sedimentation tank 2, a booster pump 3, a filter 4, a stirring mechanism 5, and a drive mechanism 6.

[0070] Among them, the water collection well 1 is a structure used to collect wastewater generated during the papermaking process.

[0071] Primary sedimentation tank 2 is connected to the outlet 103 of the collection well 1 via a pipeline. Primary sedimentation tank 2 is a water tank for preliminary sedimentation treatment of sewage. After sewage enters primary sedimentation tank 2 from collection well 1, it undergoes preliminary sedimentation, causing some suspended solids and sludge to settle. Through the preliminary sedimentation effect of primary sedimentation tank 2, the treatment load of subsequent treatment units can be reduced, improving the efficiency of the entire sewage treatment process.

[0072] A booster pump 3 is installed on the pipeline between the collection well 1 and the primary sedimentation tank 2. The booster pump 3 is used to transport water from the collection well 1 to the primary sedimentation tank 2. The booster pump 3 is a pump used to raise the sewage level and transport sewage to a higher position. Since the sewage from the paper mill area flows by gravity and the sewage pipe elevation is low, the booster pump 3 can overcome the limitations of gravity and raise the sewage to the required height of the primary sedimentation tank 2, ensuring that the sewage flows smoothly into the primary sedimentation tank 2. This solves the problem of sewage not being able to be smoothly transported to subsequent treatment units due to the low sewage pipe elevation, ensuring the smooth operation of the sewage treatment process.

[0073] A filter 4 is installed in the pipeline between the collection well 1 and the lift pump 3. The filter 4 is used to filter impurities in the sewage. By providing the filter 4, impurities in the sewage are prevented from entering the lift pump 3 and subsequent pipelines, reducing the possibility of blockage in the lift pump 3 and the water delivery pipe, extending the service life of the lift pump 3, and reducing equipment maintenance costs. Specifically, in this embodiment, the filter 4 is a Y-type filter 4. The Y-type filter 4 has the characteristics of simple structure, large filtration area, and low resistance, which can effectively filter suspended solids, particulate matter, and other impurities in sewage, and is easy to disassemble and clean for maintenance, ensuring the normal operation of the lift pump 3.

[0074] A stirring mechanism 5 is installed inside the water collection well 1. The stirring mechanism 5 is used to stir the sewage in the water collection well 1 to reduce sludge deposition. By stirring the sewage through the stirring mechanism 5, suspended solids and sludge in the sewage are less likely to be deposited at the bottom of the water collection well 1, reducing the phenomenon of sludge accumulation at the bottom of the pool, thereby reducing the risk of sewage overflow and secondary pollution caused by sludge accumulation.

[0075] The system includes a drive mechanism 6, which is connected to the stirring mechanism 5. The drive mechanism 6 provides power to the stirring mechanism 5 to drive it in stirring. The drive mechanism 6 provides a stable power source to the stirring mechanism 5, ensuring that the stirring mechanism 5 can continuously and effectively stir the wastewater and ensure anti-sedimentation effect. Specifically, in this embodiment, the drive mechanism 6 is a motor.

[0076] Specifically, in this embodiment of the papermaking wastewater collection device, a stirring mechanism 5 is installed inside the collection well 1. The stirring mechanism 5 agitates the wastewater in the collection well 1, preventing suspended solids and sludge from settling at the bottom of the well, thus reducing sludge accumulation and lowering the risk of wastewater overflow and secondary pollution. Furthermore, a filter 4 is installed on the pipeline connecting the collection well 1 and the lift pump 3. The filter 4 effectively filters impurities from the wastewater, preventing them from entering the lift pump 3 and subsequent pipelines, reducing the possibility of blockages in the lift pump 3 and the water supply pipeline. This further reduces the risk of wastewater overflow and secondary pollution due to blockages in the lift pump 3 and the water supply pipeline, extends the service life of the lift pump 3, and lowers equipment maintenance costs.

[0077] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the stirring mechanism 5 includes a mounting frame 501, a stirring shaft 502, and multiple stirring plates 503. The mounting frame 501 is fixedly mounted on the top of the water collection well 1, and the drive mechanism 6 is fixedly mounted on the mounting frame 501. The mounting frame 501 is used to fix the drive mechanism 6 and the stirring shaft 502. One end of the stirring shaft 502 passes through the mounting frame 501 and is connected to the drive mechanism 6. The other end of the stirring shaft 502 extends from top to bottom into the lower part of the water collection well 1. The multiple stirring plates 503 are staggered and spaced apart on the stirring shaft 502, and one end of each stirring plate 503 is fixedly connected to the stirring shaft 502. The staggered arrangement of the multiple stirring plates 503 can improve the stirring efficiency and make the stirring more uniform. Driven by the drive mechanism 6, the stirring shaft 502 rotates, which in turn drives the stirring plate 503 to stir the sewage in the collection well 1. This prevents suspended solids and sludge in the sewage from settling at the bottom of the collection well 1, reducing sludge accumulation at the bottom of the pool and thus lowering the risk of sewage overflow and secondary pollution caused by sludge accumulation. It should be noted that in this embodiment, the number of stirring plates 503 is not limited.

[0078] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the collection well 1 includes a well body 101, an inlet 102, an outlet 103, and a sludge discharge outlet 104. The inlet 102 is located at the upper part of the well body 101 and is used to receive wastewater generated during papermaking. The outlet 103 is located at the lower middle part of the well body 101 and is used to discharge wastewater into the primary sedimentation tank 2. The sludge discharge outlet 104 is located at the bottom of the well body 101 and is used to discharge sludge deposited at the bottom of the well body 101. By rationally setting the positions of the inlet 102, outlet 103, and sludge discharge outlet 104, the collection and discharge of wastewater and the cleaning of sludge are facilitated.

[0079] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the water collection well 1 also includes a leak-proof layer 105, which is disposed on the inner wall of the well body 101. The leak-proof layer 105 is used to prevent sewage leakage. The leak-proof layer 105 effectively prevents sewage leakage, avoids pollution to the surrounding environment, and further ensures environmental protection. The leak-proof layer 105 is made of waterproof material.

[0080] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the papermaking wastewater collection device also includes a first liquid level detection mechanism and a control mechanism 8. The first liquid level detection mechanism is located in the lower middle part of the collection well 1 and is electrically connected to the control mechanism 8. The lift pump 3 is also electrically connected to the control mechanism 8. The first liquid level detection mechanism is used to detect the liquid level in the collection well 1, and the control mechanism 8 is used to receive and process the detection signal from the first liquid level detection mechanism and control the start and stop of the lift pump 3. Specifically, the first liquid level detection mechanism detects the liquid level in the collection well 1 in real time. When the detected liquid level is lower than the set height, the first detection mechanism 7 transmits the detection signal to the control mechanism 8. After receiving the detection signal, the control mechanism 8 identifies and processes it, and controls the lift pump 3 to stop running. This achieves automatic control of the lift pump 3, avoiding problems such as the lift pump 3 running dry due to untimely manual operation, improving the stability and reliability of the device operation, and saving labor costs. The first detection mechanism 7 is a liquid level sensor, and the control mechanism 8 includes a controller, a display screen, and control buttons, which are electrically connected to the controller.

[0081] Optionally, in some embodiments, such as Figures 1 to 5As shown, the papermaking wastewater collection device also includes a second liquid level detection mechanism and an alarm mechanism 10. The second liquid level detection mechanism is located in the upper part of the collection well 1 and is electrically connected to the control mechanism 8. The alarm mechanism 10 is also electrically connected to the control mechanism 8. The second liquid level detection mechanism is used to detect the liquid level in the collection well 1, and the alarm mechanism 10 is used to issue an alarm. The control mechanism 8 is also used to receive and process the detection signal from the second liquid level detection mechanism and control the start and stop of the alarm mechanism 10. Specifically, the second liquid level detection mechanism detects the liquid level in the collection well 1 in real time. When the detected liquid level is higher than a set height, the second detection mechanism 9 transmits the detection signal to the control mechanism 8. After receiving the detection signal, the control mechanism 8 identifies and processes it, and then controls the alarm mechanism 10 to start. The alarm mechanism 10 issues an alarm to remind the staff that the water level in the collection well 1 is too high and needs to be dealt with in time to avoid wastewater overflow, reduce the possibility of secondary pollution, and further ensure the safe operation of the device. The second detection mechanism 9 is a liquid level sensor, and the alarm mechanism 10 is an audible and visual alarm.

[0082] Please see Figures 1 to 5 This embodiment relates to a wastewater treatment system, including a papermaking wastewater collection device as described in any of the above embodiments;

[0083] An acidification tank 11 is connected to the primary sedimentation tank 2 of the papermaking wastewater collection device via a pipeline. The acidification tank 11 is a tank where microorganisms degrade organic matter, fermenting it to produce acidic substances. In the acidification tank 11, wastewater is decomposed by microorganisms into sugars, fatty acids, and amino acids. During this process, the microorganisms produce organic acids such as acetic acid and propionic acid. These organic acids can lower the pH of the wastewater to approximately 4.5–5.0, creating conditions for subsequent wastewater treatment.

[0084] Anaerobic tank 12 is connected to acidification tank 11 via pipeline. The main function of anaerobic tank 12 is to remove organic matter from wastewater and reduce the emission of harmful gases. Anaerobic tank 12 can effectively degrade and transform organic pollutants in wastewater, such as suspended solids, organic matter, and oils, reducing the concentration of organic matter and COD (chemical oxygen demand). Furthermore, anaerobic tank 12 can convert organic matter into reusable anaerobic digestion products, such as methane. Anaerobic tank 12 enables wastewater purification and resource utilization, meeting the requirements of environmental protection and sustainable development.

[0085] An oxidation tank 13 is connected to the anaerobic tank 12 via pipelines. The oxidation tank 13 uses a biological reaction process to convert organic pollutants into harmless substances, while simultaneously recovering energy and reusing water. In this process, organic matter in the wastewater is decomposed into smaller organic molecules, which are then sequentially oxidized and degraded by microorganisms into carbon dioxide and water. These are then converted into energy through oxidation-reduction reactions, thus achieving nitrogen and phosphorus removal.

[0086] The system includes a final settling tank 14, which is connected to the oxidation tank 13 via pipelines. The final settling tank 14 is a water tank for the final sedimentation treatment of the wastewater after a series of treatments. The final settling tank 14 is connected to the oxidation tank 13 via pipelines and receives wastewater discharged from the oxidation tank 13. In the final settling tank 14, residual suspended solids and sludge in the wastewater settle down, clarifying the wastewater. Through final sedimentation, the wastewater quality is further purified, ensuring that the treated wastewater meets discharge standards.

[0087] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the wastewater treatment system further includes: a connecting pipe 15, one end of which is connected to the acidification tank 11, and the other end of which is connected to the oxidation tank 13; and an effluent pump 16, which is installed on the connecting pipe 15 and is used to transport wastewater from the acidification tank 11 to the oxidation tank 13. When the nitrogen content in the wastewater exceeds the standard, the effluent pump 16 is activated to directly transport the wastewater from the acidification tank 11 to the oxidation tank 13 through the connecting pipe 15. Since the wastewater in the acidification tank 11 is decomposed into sugars, fatty acids, and amino acids by microorganisms, the sugars decomposed in the acidification tank 11 replace the carbon source, supplementing and balancing the carbon-nitrogen ratio in the oxidation tank 13 to ensure the optimal carbon-nitrogen ratio is achieved, thereby improving the denitrification efficiency of the oxidation tank 13, reducing the amount of organic matter added to the oxidation tank 13, reducing chemical consumption, lowering costs, reducing the number of surface aerators required, and reducing energy consumption.

[0088] Specifically, the papermaking wastewater collection device and wastewater treatment system in this embodiment have the following features:

[0089] Beneficial effects:

[0090] The filter 4 installed in the papermaking wastewater collection device can effectively filter impurities in the wastewater, reduce the blockage of the booster pump 3 and the water delivery pipe, extend the service life of the equipment, and reduce maintenance costs.

[0091] The stirring mechanism 5 can stir the sewage in the collection well 1, reduce the deposition of sludge at the bottom of the pool, avoid sewage overflow and secondary pollution caused by sludge accumulation, and is more environmentally friendly.

[0092] The combined use of the first liquid level detection mechanism, the second detection mechanism 9, and the control mechanism 8 enables the automatic start-stop and high liquid level alarm functions of the booster pump 3, improving the automation and stability of the device operation and reducing the intensity and risk of manual operation.

[0093] The wastewater treatment system, through the coordinated action of multiple treatment units, gradually treats papermaking wastewater, effectively removing pollutants from the wastewater, ensuring that the wastewater meets discharge standards, and reducing environmental pollution.

[0094] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A wastewater collection device for papermaking, characterized in that, include: Water collection well; The primary sedimentation tank is connected to the collection well via a pipeline. A booster pump is installed on the pipeline between the water collection well and the primary sedimentation tank. The booster pump is used to transport water from the water collection well to the primary sedimentation tank. A filter is installed in the pipeline between the water collection well and the lift pump, and the filter is used to filter impurities in the sewage. A stirring mechanism is provided inside the water collection well. The stirring mechanism is used to stir the sewage in the water collection well to reduce sludge deposition. The system includes a drive mechanism that is connected to the stirring mechanism and provides power to the stirring mechanism to drive it to stir.

2. The papermaking wastewater collection device according to claim 1, characterized in that: The stirring mechanism includes a mounting frame, a stirring shaft, and multiple stirring plates; The mounting bracket is disposed on the top of the water collection well, and the drive mechanism is disposed on the mounting bracket; One end of the stirring shaft passes through the mounting frame and is connected to the drive mechanism for transmission, while the other end of the stirring shaft extends from top to bottom into the lower part of the water collection well; Multiple stirring plates are respectively and staggeredly arranged on the stirring shaft, and one end of each stirring plate is fixedly connected to the stirring shaft.

3. The wastewater collection device for papermaking according to claim 1, characterized in that: The water collection well includes a well body, an inlet, an outlet, and a sludge discharge outlet. The inlet is located at the upper part of the well body, the outlet is located at the lower middle part of the well body, and the sludge discharge outlet is located at the bottom of the well body.

4. The papermaking wastewater collection device according to claim 3, characterized in that: The water collection well also includes a leak-proof layer, which is disposed on the inner wall of the well body and is used to prevent sewage from leaking out.

5. The papermaking wastewater collection device according to any one of claims 1 to 4, characterized in that: The papermaking wastewater collection device also includes a first liquid level detection mechanism and a control mechanism; The first liquid level detection mechanism is located in the lower middle part of the water collection well. The first liquid level detection mechanism is electrically connected to the control mechanism, and the lift pump is electrically connected to the control mechanism. The first liquid level detection mechanism is used to detect the liquid level in the water collection well, and the control mechanism is used to receive and process the detection signal from the first liquid level detection mechanism and control the start and stop of the lift pump.

6. The papermaking wastewater collection device according to claim 5, characterized in that: The papermaking wastewater collection device also includes a second liquid level detection mechanism and an alarm mechanism. The second liquid level detection mechanism is located in the upper part of the water collection well. The second liquid level detection mechanism is electrically connected to the control mechanism, and the alarm mechanism is electrically connected to the control mechanism. The second liquid level detection mechanism is used to detect the liquid level in the water collection well, and the alarm mechanism is used to issue an alarm. The control mechanism is also used to receive and process the detection signal of the second liquid level detection mechanism, and control the start and stop of the alarm mechanism.

7. The papermaking wastewater collection device according to any one of claims 1 to 4, characterized in that: The filter is a Y-type filter.

8. A wastewater treatment system, characterized in that, Includes the papermaking wastewater collection device as described in any one of claims 1 to 7 above.

9. The wastewater treatment system according to claim 8, characterized in that, The wastewater treatment system also includes: Acidification tank; the acidification tank is connected to the primary sedimentation tank of the papermaking wastewater collection device via a pipeline; An anaerobic tank, which is connected to the acidification tank via a pipeline; An oxidation tank, which is connected to the anaerobic tank via a pipeline; And a final settling tank, which is connected to the oxidation tank via a pipeline.

10. The wastewater treatment system according to claim 9, characterized in that, The wastewater treatment system also includes: A connecting pipeline, one end of which is connected to the acidification tank and the other end of which is connected to the oxidation tank; And an outlet pump, which is installed on the connecting pipeline, is used to transport the wastewater in the acidification tank to the oxidation tank.

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