Carbon powder recovery device for sewage

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a carbon powder recovery device for sewage, which comprises a to-be-treated water tank for storing to-be-treated sewage; the concentration tank is communicated with the to-be-treated water tank through a liquid supply pipeline and is used for settling the sewage; the tubular membrane is communicated with the drain pipe of the concentration tank and is used for separating pollutants in the sewage; the clean water tank is communicated with a water outlet of the tubular membrane and is used for storing clean water subjected to ultrafiltration treatment of the tubular membrane; and the sludge tank is communicated with the sludge discharge pipe of the concentration tank. Graphite carbon black sewage is subjected to high-precision filtration through the tubular membrane, wastewater purification and resource recycling are achieved, meanwhile, compared with a chemical precipitation method and a biological treatment method in the prior art, the tubular membrane is adopted for filtration, efficient separation can be achieved under low energy consumption, meanwhile, use of chemical agents is reduced, and the production cost is reduced. The treatment cost and the environmental risk are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to a wastewater carbon powder recovery device. Background Technology

[0002] Graphite and carbon black, as important industrial raw materials, play a crucial role in many fields such as battery manufacturing, rubber production, and coatings. However, with the continuous expansion of graphite and carbon black-related industries, the wastewater problems generated during their production processes are becoming increasingly prominent. Graphite and carbon black wastewater typically contains large amounts of fine particles, organic matter, and heavy metals. If this wastewater is discharged directly without effective treatment, it will not only cause serious environmental pollution but also waste its potential recyclable resources.

[0003] In related technologies, chemical precipitation and biological treatment methods are used to treat graphite carbon black wastewater. However, the carbon powder in the wastewater is not completely recovered, and the quality of the discharged liquid is poor, which cannot meet the discharge requirements.

[0004] Therefore, improving the recovery quality of carbon powder from graphite carbon black wastewater to reduce the carbon powder content in the effluent is a pressing technical problem that needs to be solved.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one wastewater carbon powder recovery device.

[0007] In a first aspect, embodiments of this disclosure provide a wastewater toner recovery device, comprising:

[0008] A wastewater tank for storing wastewater awaiting treatment;

[0009] A concentration tank, which is connected to the water tank to be treated via a liquid supply pipeline, is used to settle the wastewater;

[0010] A tubular membrane, which is connected to the drain pipe of the concentration tank and is used to separate pollutants from wastewater;

[0011] A clear water tank, which is connected to the drain outlet of the tubular membrane, and is used to store clear water after ultrafiltration treatment by the tubular membrane;

[0012] A sludge tank is connected to the sludge discharge pipe of the thickening tank and is used to collect the concentrated liquid sent out by the thickening tank.

[0013] In one optional embodiment, the tubular membrane is further provided with a circulation pipe communicating with the concentration tank;

[0014] The pollutants separated by the tubular membrane are sent to the concentration tank through a circulation pipe.

[0015] In one optional embodiment, the number of tubular membranes is multiple;

[0016] Multiple tubular membranes are stacked and connected in a serpentine manner, and connected to the top of the concentration tank through a circulation pipe.

[0017] In one optional embodiment, the wastewater carbon powder recovery device further includes a plate and frame filter press;

[0018] The plate and frame filter press is used to separate the concentrated liquid from the sludge tank into solids and liquids, and to send the filtrate into a clean water tank for collection. The separated solids are used for subsequent recycling.

[0019] In one optional embodiment, the wastewater toner recovery device further includes a filtrate tank;

[0020] The filtrate discharged from the plate and frame filter press is sent to the filtrate tank for buffering, and then the filtrate is sent to the clear water tank by a water pump outside the filtrate tank.

[0021] In one alternative embodiment, the plate and frame filter press is further provided with pedals around its perimeter;

[0022] The pedal is L-shaped.

[0023] In one alternative embodiment, the plate and frame filter press is disposed opposite to the tubular membrane.

[0024] Furthermore, at least a portion of the footplate is positioned between the tubular membrane and the plate and frame filter press.

[0025] Secondly, embodiments of this disclosure also provide a wastewater toner recovery device, comprising:

[0026] A wastewater tank for storing wastewater awaiting treatment;

[0027] A concentration tank, which is connected to the water tank to be treated via a liquid supply pipeline, is used to settle the wastewater;

[0028] A tubular membrane, which is connected to the drain pipe of the concentration tank and is used to separate pollutants from wastewater;

[0029] A clear water tank, which is connected to the drain outlet of the tubular membrane, and is used to store clear water after ultrafiltration treatment by the tubular membrane;

[0030] A plate and frame filter press is connected to the sludge discharge pipe of the concentration tank and is used to perform solid-liquid separation on the concentrated liquid sent from the concentration tank, and to send the filtrate into a clean water tank for collection. The separated solids are used for subsequent recovery.

[0031] In one optional embodiment, the tubular membrane is further provided with a circulation pipe communicating with the concentration tank;

[0032] The pollutants separated by the tubular membrane are sent to the concentration tank through a circulation pipe.

[0033] In one optional embodiment, the number of tubular membranes is multiple;

[0034] Multiple tubular membranes are stacked and connected in a serpentine manner, and connected to the top of the concentration tank through a circulation pipe.

[0035] The beneficial effects of this utility model are that the wastewater carbon powder recovery device uses a tubular membrane to perform high-precision filtration of graphite carbon black wastewater, thereby achieving wastewater purification and resource recovery. It can achieve efficient separation with low energy consumption. At the same time, compared with the existing chemical precipitation and biological treatment methods, the use of tubular membrane filtration can achieve efficient separation with low energy consumption, while reducing the use of chemical agents, lowering treatment costs and environmental risks.

[0036] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 A flowchart of a wastewater toner recovery device provided in an embodiment of this disclosure;

[0040] Figure 2 This is a schematic diagram of the structure of the wastewater toner recovery device provided in the embodiments of this disclosure;

[0041] Figure 3 This is a schematic diagram of the wastewater toner recovery device provided in an embodiment of this disclosure from another perspective.

[0042] In the diagram: 100 - Water tank to be treated; 200 - Concentrator; 210 - Drain pipe; 220 - Sludge discharge pipe; 230 - Liquid supply pipe; 240 - Drain pump; 300 - Tubular membrane; 310 - Circulation pipe; 400 - Clean water tank; 500 - Sludge tank; 600 - Plate and frame filter press; 610 - Pedal; 700 - Filtrate tank; 710 - Water pump. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] Research has found that, among the relevant technologies, the chemical precipitation method, which uses chemical agents to treat graphite carbon black wastewater, results in chemical residues remaining in the liquid, while the biological treatment method is too slow.

[0045] Based on the above research, this disclosure provides a wastewater toner recovery device that uses a tubular membrane for high-precision filtration. While ensuring filtration efficiency, it does not use any chemical agents, thus avoiding environmental impact.

[0046] The shortcomings of the above solutions are the result of the inventors' practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the inventors to this disclosure.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0049] Please see Figure 1 and Figure 2 At least one embodiment provides a wastewater toner recovery device, comprising the following structure:

[0050] Wastewater tank 100 is used to store wastewater awaiting treatment. Wastewater generated during the graphite carbon black production process is collected through wastewater tank 100 to ensure that the wastewater can be centrally treated.

[0051] The concentration tank 200 is connected to the water tank 100 to be treated via a liquid supply pipe 230 and is used to settle the wastewater.

[0052] Specifically, the concentration tank 200 provides a relatively quiet environment with a longer residence time for the coagulated mixture. Within this area, the flocs formed by the coagulation reaction have sufficient time to settle naturally under gravity. The greater depth and slower water flow velocity allow the flocs to settle more thoroughly, thereby improving sedimentation efficiency and reducing the suspended solids content in the effluent. The already formed flocs will collide and aggregate under the slow water flow, further increasing their size. Larger flocs settle more easily, thus improving the sedimentation effect. At the same time, this floc growth process also helps to improve the efficiency of subsequent sludge treatment.

[0053] A tubular membrane 300 is connected to the drain pipe 210 of the concentration tank 200 and is used to separate pollutants from wastewater. The drain pipe 210 is connected to a drain pump 240, which pumps the wastewater from the concentration tank 200 into the tubular membrane 300 for filtration.

[0054] Specifically, the tubular membrane 300 has a specific pore size, enabling precise separation of carbon particles from water and other dissolved substances in wastewater. Its pore size can typically trap carbon particles larger than the membrane pore size, ensuring effective separation and enrichment of the carbon, thereby improving the purity of the recovered carbon. For micron- or submicron-sized carbon particles, the tubular ultrafiltration membrane can effectively separate them from wastewater.

[0055] During the tubular membrane 300 filtration process, wastewater flows on the membrane surface at a certain flow rate, generating shear force, which reduces the accumulation and clogging of carbon particles on the membrane surface, enabling the filtration process to proceed continuously and stably, thereby improving the separation efficiency and recovery rate of carbon powder.

[0056] The clean water tank 400 is connected to the drain outlet of the tubular membrane 300 and is used to store the clean water after ultrafiltration treatment by the tubular membrane 300. When the water production flow of the tubular membrane 300 is unstable, the clean water tank 400 can act as a buffer to ensure that a relatively stable water source can be obtained in subsequent water use processes.

[0057] Meanwhile, the clean water tank 400 serves as a water quality monitoring point. Through sampling and analysis, the system's operational effectiveness and the quality of the produced water can be monitored in a timely manner. When water quality fluctuations occur, appropriate water quality adjustments can be made promptly.

[0058] The sludge tank 500 is connected to the sludge discharge pipe 220 of the thickening tank 200 and is used to collect the concentrated liquid sent out by the thickening tank 200. By temporarily storing sludge, the sludge tank can continue to receive and store sludge when the plate and frame filter press 600 is stopped or undergoing maintenance, and will be processed after the filter press is restarted.

[0059] Please see Figure 3 The tubular membrane 300 is also provided with a circulation pipe 310 connected to the concentration tank 200; the pollutants separated by the tubular membrane 300 are sent into the concentration tank 200 through the circulation pipe 310. The wastewater in the concentration tank 200 is filtered multiple times through the circulation pipe 310, thereby improving the filtration accuracy.

[0060] Please see Figure 2 The number of tubular membranes 300 is multiple; the multiple tubular membranes 300 are stacked and connected in a serpentine manner, and are connected to the top of the concentration tank 200 through a circulation pipe 310.

[0061] Please see Figure 1 and Figure 2 The wastewater carbon powder recovery device also includes a plate and frame filter press 600; the plate and frame filter press 600 is used to perform solid-liquid separation on the concentrated liquid sent from the sludge tank 500, and send the filtrate into the clear water tank 400 for collection, and the separated solids are used for subsequent recycling.

[0062] The concentrated liquid is further treated by a plate filter press to reduce the moisture content of the discharged carbon powder. At the same time, it effectively traps graphite carbon black solid particles in the sludge, improving the solid recovery rate for further treatment or resource utilization.

[0063] Please see Figure 1 and Figure 3 The wastewater carbon powder recovery device also includes a filtrate tank 700; the filtrate discharged from the plate and frame filter press 600 is sent into the filtrate tank 700 for buffering, and then the filtrate is sent into the clean water tank 400 by the water pump 710 outside the filtrate tank 700.

[0064] Since the plate and frame filter press 600 is usually not operated continuously, the filtrate produced by the plate and frame filter press 600 is temporarily stored in the filtrate tank 700, which serves as a buffer.

[0065] To facilitate the removal of the filter cake from the plate and frame filter press 600, in a preferred embodiment, a foot pedal 610 is provided around the plate and frame filter press 600; the foot pedal 610 is L-shaped. The foot pedal 610 facilitates the operator's handling of the filter cake.

[0066] Please see Figure 2The plate and frame filter press 600 is arranged opposite to the tubular membrane 300; and at least a portion of the foot pedal 610 is disposed between the tubular membrane 300 and the plate and frame filter press 600. The foot pedal 610 is disposed between the plate and frame filter press 600 and the tubular membrane 300 to facilitate maintenance and upkeep of the tubular membrane 300, and also to facilitate the removal of the filter cake inside the plate and frame filter press 600.

[0067] Please see Figure 2 and Figure 3 At least one embodiment also provides a wastewater toner recovery device, comprising the following structure:

[0068] Wastewater tank 100 is used to store wastewater to be treated; wastewater generated during the production of graphite carbon black is collected through wastewater tank 100 to ensure that the wastewater can be centrally treated.

[0069] The concentration tank 200 is connected to the water tank 100 to be treated via a liquid supply pipe 230 and is used to settle the wastewater.

[0070] Specifically, the concentration tank 200 provides a relatively quiet environment with a longer residence time for the coagulated mixture. Within this area, the flocs formed by the coagulation reaction have sufficient time to settle naturally under gravity. The greater depth and slower water flow velocity allow the flocs to settle more thoroughly, thereby improving sedimentation efficiency and reducing the suspended solids content in the effluent. The already formed flocs will collide and aggregate under the slow water flow, further increasing their size. Larger flocs settle more easily, thus improving the sedimentation effect. At the same time, this floc growth process also helps to improve the efficiency of subsequent sludge treatment.

[0071] A tubular membrane 300 is connected to the drain pipe 210 of the concentration tank 200 and is used to separate pollutants from wastewater. The drain pipe 210 is connected to a drain pump 240, which pumps the wastewater from the concentration tank 200 into the tubular membrane 300 for filtration.

[0072] Specifically, the tubular membrane 300 has a specific pore size, enabling precise separation of carbon particles from water and other dissolved substances in wastewater. Its pore size can typically trap carbon particles larger than the membrane pore size, ensuring effective separation and enrichment of the carbon, thereby improving the purity of the recovered carbon. For micron- or submicron-sized carbon particles, the tubular ultrafiltration membrane can effectively separate them from wastewater.

[0073] During the tubular membrane 300 filtration process, wastewater flows on the membrane surface at a certain flow rate, generating shear force, which reduces the accumulation and clogging of carbon particles on the membrane surface, enabling the filtration process to proceed continuously and stably, thereby improving the separation efficiency and recovery rate of carbon powder.

[0074] The clean water tank 400 is connected to the drain outlet of the tubular membrane 300 and is used to store the clean water after ultrafiltration treatment by the tubular membrane 300. When the water production flow of the tubular membrane 300 is unstable, the clean water tank 400 can act as a buffer to ensure that a relatively stable water source can be obtained in subsequent water use processes.

[0075] The plate and frame filter press 600 is connected to the sludge discharge pipe 220 of the concentration tank 200 and is used to perform solid-liquid separation on the concentrated liquid sent from the concentration tank 200, and to send the filtrate into the clear water tank 400 for collection. The separated solids are used for subsequent recovery.

[0076] The concentrated liquid is further treated by a plate filter press to reduce the moisture content of the discharged carbon powder. At the same time, it effectively traps graphite carbon black solid particles in the sludge, improving the solid recovery rate for further treatment or resource utilization.

[0077] In a preferred embodiment, a sludge tank 500 is also provided between the plate and frame filter press 600 and the thickening tank 200, and the sludge discharge pipe 220 of the thickening tank 200 is connected to the sludge pipe 500.

[0078] The tubular membrane 300 is further provided with a circulation pipe 310 connected to the concentration tank 200. The pollutants separated by the tubular membrane 300 are sent into the concentration tank 200 through the circulation pipe 310. The wastewater in the concentration tank 200 is filtered multiple times through the circulation pipe 310, thereby improving the filtration accuracy.

[0079] It should be noted that there are multiple tubular membranes 300; the multiple tubular membranes 300 are stacked and connected in a serpentine manner, and are connected to the top of the concentration tank 200 through a circulation pipe 310.

[0080] Specifically, serpentine connection refers to the arrangement of multiple tubular membranes 300 stacked from top to bottom, with the inlets and outlets of the tubular membranes 300 staggered. After the tubular membranes 300 are connected in series by a U-shaped tube, they finally form a serpentine shape.

[0081] In summary, this utility model provides a wastewater carbon powder recovery device comprising: a water tank 100 for storing wastewater to be treated; a concentration tank 200 connected to the water tank 100 via a liquid supply pipe 230 for settling the wastewater; a tubular membrane 300 connected to the drain pipe 210 of the concentration tank 200 for separating pollutants from the wastewater; a clear water tank 400 connected to the drain outlet of the tubular membrane 300 for storing clear water after ultrafiltration treatment by the tubular membrane 300; and a sludge tank 500 connected to the sludge discharge pipe 220 of the concentration tank 200 for collecting the concentrated liquid discharged from the concentration tank 200. By using a tubular membrane 300 to filter graphite carbon black wastewater with high precision, wastewater purification and resource recycling can be achieved. High-efficiency separation can be achieved with low energy consumption. At the same time, compared with existing chemical precipitation and biological treatment methods, using a tubular membrane 300 for filtration can achieve high-efficiency separation with low energy consumption, while reducing the use of chemical agents, lowering treatment costs and environmental risks.

[0082] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A wastewater carbon powder recovery device, characterized in that, include: A wastewater tank (100) for storing wastewater to be treated; A concentration tank (200) is connected to the water tank (100) to be treated via a liquid supply pipe (230) and is used for settling wastewater; A tubular membrane (300) is connected to the drain pipe (210) of the concentration tank (200) and is used to separate pollutants from wastewater; A clean water tank (400) is connected to the drain outlet of the tubular membrane (300) and is used to store clean water that has been ultrafiltered by the tubular membrane (300); The sludge tank (500) is connected to the sludge discharge pipe (220) of the concentration tank (200) and is used to collect the concentrated liquid sent out by the concentration tank (200).

2. The wastewater carbon powder recovery device as described in claim 1, characterized in that, The tubular membrane (300) is also provided with a circulation pipe (310) connected to the concentration tank (200). The pollutants separated by the tubular membrane (300) are sent to the concentration tank (200) through the circulation pipe (310).

3. The wastewater carbon powder recovery device as described in claim 2, characterized in that, The number of tubular membranes (300) is multiple; Multiple tubular membranes (300) are stacked and connected in a serpentine manner, and connected to the top of the concentration tank (200) through a circulation pipe (310).

4. The wastewater carbon powder recovery device as described in claim 1, characterized in that, The wastewater carbon powder recovery device also includes a plate and frame filter press (600). The plate and frame filter press (600) is used to separate the concentrated liquid from the sludge tank (500) into solid and liquid, and to send the filtrate into the clean water tank (400) for collection. The separated solids are used for subsequent recycling.

5. The wastewater carbon powder recovery device as described in claim 4, characterized in that, The wastewater carbon powder recovery device also includes a filtrate tank (700). The filtrate discharged from the plate and frame filter press (600) is sent to the filtrate tank (700) for buffering, and then the filtrate is sent to the clean water tank (400) by the water pump (710) outside the filtrate tank (700).

6. The wastewater carbon powder recovery device as described in claim 4, characterized in that, The plate and frame filter press (600) is also equipped with pedals (610) around its perimeter. The pedal (610) is L-shaped.

7. The wastewater carbon powder recovery device as described in claim 6, characterized in that, The plate and frame filter press (600) is arranged opposite to the tubular membrane (300); At least a portion of the footplate (610) is located between the tubular membrane (300) and the plate and frame filter press (600).

8. A wastewater toner recovery device, characterized in that, include: A wastewater tank (100) for storing wastewater to be treated; A concentration tank (200) is connected to the water tank (100) to be treated via a liquid supply pipe (230) and is used for settling wastewater; A tubular membrane (300) is connected to the drain pipe (210) of the concentration tank (200) and is used to separate pollutants from wastewater; A clean water tank (400) is connected to the drain outlet of the tubular membrane (300) and is used to store clean water that has been ultrafiltered by the tubular membrane (300); A plate and frame filter press (600) is connected to the sludge discharge pipe (220) of the concentration tank (200) and is used to perform solid-liquid separation on the concentrated liquid sent from the concentration tank (200) and send the filter liquid into the clean water tank (400) for collection. The separated solids are used for subsequent recovery.

9. The wastewater carbon powder recovery device as described in claim 8, characterized in that, The tubular membrane (300) is also provided with a circulation pipe (310) connected to the concentration tank (200). The pollutants separated by the tubular membrane (300) are sent to the concentration tank (200) through the circulation pipe (310).

10. The wastewater carbon powder recovery device as described in claim 9, characterized in that, The number of tubular membranes (300) is multiple; Multiple tubular membranes (300) are stacked and connected in a serpentine manner, and connected to the top of the concentration tank (200) through a circulation pipe (310).

Images