A system for recycling high-concentration organic wastewater

Abstract

The utility model discloses a system for high concentration organic wastewater recycling relates to chemical wastewater treatment technical field, including the buffer pool, buffer pool is provided with two groups, and two groups are fixedly connected through the pipeline between, and one side fixedly connected with main stream pipe of one group buffer pool, and one end fixedly connected with three groups of shunt pipe of main stream pipe, and the bottom of each group shunt pipe is fixedly connected with coal mill, and is fixedly installed with cleaning assembly between main stream pipe and shunt pipe, and the outer wall of one end of shunt pipe is fixedly covered with water pump, through with high concentration organic wastewater as pulping raw material and send into coal mill, and utilize gasification furnace's high temperature gasification process to decompose toxic refractory organic matter thoroughly, effectively avoid the risk of active sludge poisoning failure in traditional biochemical technology, not only realize the harmless, resource utilization of high concentration organic wastewater, reduce the cost of enterprise sewage treatment and fresh water consumption effectively, provide reliable technical support for the sustainable development of industry.

Description

Technical Field

[0001] This utility model relates to the field of chemical wastewater treatment technology, specifically a system for the recycling and utilization of high-concentration organic wastewater. Background Technology

[0002] High-concentration organic wastewater recycling systems can eliminate pollution, protect the water environment, and convert organic matter in wastewater into clean energy such as biogas. At the same time, they can recycle water resources, turn waste into treasure, reduce treatment costs and resource consumption, and promote sustainable development of enterprises.

[0003] Existing high-concentration organic wastewater recycling systems mostly employ a combination of "pretreatment + anaerobic digestion + SBR + air flotation" processes. This process removes pollutants while simultaneously recovering energy and resources. Anaerobic technology is used to convert organic matter in the wastewater into biogas, and the treated effluent is reused. However, due to the high toxicity and poor biodegradability of high-concentration organic wastewater, the traditional "pretreatment + anaerobic + SBR + air flotation" biological process is prone to causing activated sludge poisoning and death when treating such wastewater, which in turn paralyzes the entire sewage treatment system, making it difficult to achieve the goals of harmlessness, resource utilization and volume reduction of wastewater. At the same time, it will also increase the company's sewage treatment costs and fresh water consumption. Utility Model Content

[0004] The purpose of this invention is to provide a system for the recycling of high-concentration organic wastewater, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A system for recycling high-concentration organic wastewater includes a buffer tank, wherein two sets of buffer tanks are provided and the two sets are fixedly connected by a pipeline. One side of one set of buffer tanks is fixedly connected to a main pipe, and one end of the main pipe is fixedly connected to three diversion pipes, and the bottom end of each diversion pipe is fixedly connected to a coal mill. A cleaning component is fixedly installed between the main pipe and the branch pipe, and a water pump is fixedly sleeved on the outer wall of one end of the branch pipe.

[0006] As a further embodiment of this utility model, the cleaning component includes a cleaning cylinder, which is fixedly installed inside the bracket. A filter tube is rotatably mounted at the inner cavity axis of the cleaning cylinder via a bearing. A rotating shaft is rotatably connected to the inner cavity of the filter tube via a bearing. Multiple sets of stirring paddles are fixedly mounted on the outer surface of the rotating shaft.

[0007] As a further embodiment of this utility model, two sets of inner scrapers are fixedly installed on the outer surface of the rotating shaft, and an outer scraper is fixedly installed on the inner wall of the cleaning cylinder, with one side of the outer scraper fitting against the outer wall of the filter tube.

[0008] As a further embodiment of this utility model, a drive gear is fixedly sleeved on the outer wall of one end of the rotating shaft through the filter tube, and a rotating sleeve is fixedly connected to the end of the filter tube near the drive gear. An internal gear ring is fixedly installed on the inner wall of the rotating sleeve. A transmission gear is rotatably connected inside the rotating sleeve through a pin, and the transmission gear is located between the drive gear and the internal gear ring, and the three mesh with each other.

[0009] As a further embodiment of this utility model, a pipe rack is installed on one side of the coal mill, and the three groups of diversion pipes are all laid on the top surface of the pipe rack. A bracket is fixedly connected to the side of the pipe rack near the cleaning component.

[0010] As a further embodiment of this utility model, one side of one set of buffer pools is fixedly connected to a water supply pipe, and the other side of the buffer pools away from the water supply pipe is fixedly connected to a branch pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. When this utility model is used, high-concentration organic wastewater is fed into a coal mill as a pulping raw material, and the high-temperature gasification process of the gasifier is used to completely decompose toxic and difficult-to-degrade organic matter. At the same time, an optimized sewage treatment plant is used to achieve the discharge of a small amount of wastewater that meets the standards. This effectively avoids the risk of activated sludge poisoning and failure in traditional biochemical processes. It not only achieves the harmless and resource-based utilization of high-concentration organic wastewater, but also effectively reduces the cost of sewage treatment and fresh water consumption for enterprises, providing reliable technical support for the sustainable development of the industry.

[0012] 2. When this utility model is in use, the high-speed rotating stirring paddle and scraper inside the cleaning component can break up large particles of impurities and scrape off the deposits on the inner wall of the filter tube. At the same time, the filter tube rotates slowly under gear transmission, and its outer wall is continuously cleaned by the fixed scraper. This can efficiently remove suspended solids and viscous colloids in wastewater, fundamentally prevent pipe scaling and blockage, ensure the continuous and stable delivery of wastewater to the coal mill, and lay a solid foundation for the reliable operation of the entire resource recovery system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a system for recycling high-concentration organic wastewater.

[0014] Figure 2 This is a schematic diagram of the structure of a cleaning component in a system for recycling high-concentration organic wastewater.

[0015] Figure 3 This is a structural cross-sectional view of a cleaning component in a system for recycling high-concentration organic wastewater.

[0016] Figure 4This is a cross-sectional view of the structure of a filter tube in a system for recycling high-concentration organic wastewater.

[0017] Figure 5 This is a wastewater treatment process flow diagram for a system used to recycle and reuse high-concentration organic wastewater.

[0018] In the diagram: 1. Buffer pool; 2. Main flow pipe; 3. Branch pipe; 4. Coal mill; 5. Cleaning components; 501. Cleaning cylinder; 502. Filter tube; 503. Rotating shaft; 504. Agitator; 505. Drive motor; 506. Inner scraper; 507. Outer scraper; 508. Collection box; 509. Drain pipe; 510. Drive gear; 511. Rotating sleeve; 512. Inner gear ring; 513. Transmission gear; 6. Water pump; 7. Pipe rack; 8. Support; 9. Water supply pipe; 10. Branch pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , Figure 2 In this embodiment of the present invention, a system for recycling high-concentration organic wastewater includes a buffer tank 1. The buffer tank 1 is provided in two sets, and the two sets are fixedly connected by a pipe to serve as a wastewater receiving and temporary storage unit. One side of one set of buffer tank 1 is fixedly connected to a main pipe 2, and one end of the main pipe 2 is fixedly connected to three diversion pipes 3. The bottom end of each diversion pipe 3 is fixedly connected to a coal mill 4. A cleaning component 5 is fixedly installed between the main pipe 2 and the branch pipe 3 to prevent impurities in the wastewater from adhering to, accumulating in the pipe and forming scale and blockage. A water pump 6 is fixedly sleeved on the outer wall of one end of the branch pipe 3 to provide power support for wastewater transportation. It should be noted that both buffer tanks 1 are set at 1000m³ to receive wastewater with COD of 3000-20000mg / L and ammonia nitrogen of 600-1000mg / L, forming a synergistic water storage system. This provides a stable water supply for subsequent transportation and treatment processes, preventing system operation from being affected by fluctuations in wastewater supply. The wastewater is used as a feedstock for multi-component slurry gasification. Through the coordinated operation of the main pipe 2 and the branch pipe 3, the wastewater is precisely distributed and directly transported to the coal mill 4 for slurry preparation. The coal slurry then enters... After passing through the gasifier, the organic matter can be fully gasified. The syngas generated by gasification is rapidly cooled in the quench chamber before entering the subsequent process for further treatment or utilization. Meanwhile, since the wastewater often contains a large amount of suspended solids, viscous colloids, and easily precipitated dissolved organic matter, these impurities are prone to adhere and accumulate in the pipeline, thus forming scale and causing pipeline blockage. Therefore, before the wastewater is transported to the coal mill 4, the system filters the wastewater through the cleaning component 5 to remove impurities and ensure smooth transportation.

[0021] Please see Figure 2 , Figure 3 , Figure 4 The cleaning component 5 includes a cleaning cylinder 501, which is fixedly installed inside the bracket 8. A filter tube 502 is rotatably installed at the inner cavity axis of the cleaning cylinder 501 via a bearing. A rotating shaft 503 is rotatably connected to the inner cavity of the filter tube 502 via a bearing. Multiple sets of stirring paddles 504 are fixedly installed on the outer surface of the rotating shaft 503 for crushing impurities in the wastewater. It should be noted that the bottom of the cleaning cylinder 501 is designed in a funnel shape, which can guide the wastewater to flow smoothly downwards and avoid the formation of liquid accumulation or dead corners inside the cylinder. The diversion pipe 3 is fixedly connected to the bottom of the cleaning cylinder 501 through a flange, ensuring the sealing and stability of the wastewater transportation. One end of the main pipe 2 is fixedly connected to the pipe at the inlet end of the filter pipe 502 through a flange. In subsequent cleaning and maintenance, the connection between the main pipe 2 and the cleaning cylinder 501 can be disconnected by removing the flange, which makes it convenient for staff to insert the self-priming sewage pump and matching pipes into the filter pipe 502, thereby efficiently removing the impurities accumulated in the pipe. At the same time, the outer surface of the filter pipe 502 has multiple sets of filter holes, which can directly intercept solid suspended matter, viscous colloids and other impurities in the wastewater, reducing the entry of impurities into the subsequent pipes and coal mill 4 from the source, avoiding pipe scaling and blockage, and ensuring the stable operation of the system. It should also be noted that a drive motor 505 for providing power is fixedly installed on the side of the cleaning cylinder 501 near the coal mill 4, and one end of the rotating shaft 503 passes through the outer wall of the cleaning cylinder 501 and is fixedly connected to the output end of the drive motor 505 to ensure stable power transmission. Two sets of inner scrapers 506 are fixedly installed on the outer surface of the rotating shaft 503 to scrape off impurities adhering to the inner wall of the filter tube 502. An outer scraper 507 is fixedly installed on the inner wall of the cleaning cylinder 501, and one side of the outer scraper 507 is in contact with the outer wall of the filter tube 502 to scrape off impurities adhering to the outer wall of the filter tube 502. It should be noted that the two sets of inner scrapers 506 and the stirring paddle 504 are evenly and alternately distributed to form a cleaning structure that works together inside and outside to ensure that impurities on the inner and outer surfaces of the filter tube 502 are completely removed. In addition, the inner scrapers 506 are in close contact with the inner wall of the filter tube 502, which can directly scrape off the impurities attached to the inner wall of the filter tube 502 and avoid scale buildup. It should also be noted that a drain trough is provided on the outer wall of the cleaning cylinder 501 near the outer scraper 507. A collection box 508 is fixedly installed on the outer wall of the cleaning cylinder 501, and the inner cavity of the collection box 508 is connected to the drain trough to facilitate the centralized storage of impurities that slide down through the drain trough, avoid the scattering of impurities and secondary pollution, and facilitate centralized treatment. The top surface of the outer scraper 507 is designed as an inclined surface to guide the scraped impurities to slide smoothly into the collection box 508 along the inclined surface through the drain trough. A drain pipe 509 is fixedly connected to the bottom end of the collection box 508, and a throttle valve is fixedly sleeved on the outer wall of the drain pipe 509 to control the discharge of impurities. A drive gear 510 is fixedly sleeved on the outer wall of one end of the rotating shaft 503 through the filter tube 502. A rotating sleeve 511 is fixedly connected to one end of the filter tube 502 near the drive gear 510. An internal gear ring 512 is fixedly installed on the inner wall of the rotating sleeve 511. A transmission gear 513 is rotatably connected inside the rotating sleeve 511 through a pin. The transmission gear 513 is located between the drive gear 510 and the internal gear ring 512, and the three mesh with each other. It should be noted that the rotating sleeve 511 is rotatably connected to the cleaning cylinder 501 through a bearing, and the rotating sleeve 511 is rotatably sleeved on the outer wall of the rotating shaft 503. The drive gear 510 rotates synchronously with the rotating shaft 503. As a power output gear, it transmits the power of the drive motor 505 to the transmission gear 513. Then, the internal gear ring 512 receives the power transmitted by the transmission gear 513 and drives the rotating sleeve 511 to rotate, providing a power basis for the rotation of the filter tube 502.

[0022] Please see Figure 1 A pipe rack 7 is installed on one side of the coal mill 4, and the three groups of diversion pipes 3 are all laid on the top surface of the pipe rack 7. A bracket 8 is fixedly connected to the side of the pipe rack 7 near the cleaning component 5 for fixing the cleaning component 5.

[0023] Please see Figure 1 , Figure 5 One of the buffer pools 1 is fixedly connected to a water supply pipe 9 on one side to provide a stable raw material input to the system, and the other buffer pool 1 is fixedly connected to a branch pipe 10 on the side away from the water supply pipe 9. It should be noted that the branch pipe 10 and the main pipe 2 realize the classified transportation of wastewater. Most of the wastewater enters the coal mill 4 for recycling through the main pipe 2, while a small portion of the wastewater is transported to the sewage treatment plant for treatment through the branch pipe 10. It should also be noted that the wastewater treatment plant consists of a primary sedimentation tank, an emergency tank, an equalization tank, an anaerobic tank, an aerobic tank, an air flotation tank, and an effluent tank. The equalization tank has been modified to include a two-stage reaction chamber and a sedimentation chamber to enhance flocculation and sedimentation. The primary sedimentation tank and the equalization tank are connected in series via the emergency tank (see [link to wastewater treatment process flow] for details). Figure 5 ).

[0024] The working principle of this utility model is as follows: When this utility model is used, it first receives wastewater with extremely high COD and ammonia nitrogen concentrations through two sets of 1000m³ buffer tanks 1. The system will divert the wastewater for treatment. Most of the wastewater is transported to the coal mill 4 for recycling through the main pipe 2, while a small portion of the wastewater that is not suitable for or exceeds the system's treatment capacity is transported to the sewage treatment plant for special treatment through the branch pipe 10. Most of the wastewater enters the filter tube 502 through the main pipe 2. The filter pores on its surface directly intercept suspended solids and viscous colloids in the wastewater, preventing these impurities from entering subsequent pipes and the coal mill 4. Then, the drive motor 505 rotates the shaft 503, causing multiple sets of agitators 504 to agitate the wastewater inside the filter tube 502. This not only breaks down some soft impurities but also creates turbulence, improving filtration efficiency and preventing the filter pores from becoming clogged quickly. This, combined with the inner scraper 506 adhering to the filter tube 502, further enhances the filtration efficiency. 2. Impurities are scraped off the inner wall. At the same time, the drive gear 510 on the rotating shaft 503 drives the inner gear ring 512 and the rotating sleeve 511 to rotate through the transmission gear 513, thereby causing the filter tube 502 to rotate synchronously in the opposite direction. The outer scraper 507 is used to scrape off impurities by adhering to the outer wall of the filter tube 502. The impurities slide along the inclined surface of the outer scraper 507 through the sewage discharge trough into the collection box 508, and then are discharged from the sewage discharge pipe 509. The flange can be removed later, and the impurities in the filter tube 502 can be cleaned with a self-priming sewage pump to ensure that the filter holes are unobstructed. After cleaning, the wastewater is precisely distributed to each coal mill 4 through the diversion pipe 3. Inside the coal mill 4, the wastewater is mixed with coal to form a coal-wastewater slurry. After the slurry enters the gasifier, under high temperature and high pressure, the organic matter in the wastewater is decomposed into syngas (H2+CO), and the organic nitrogen is converted into N2 / NH3. After being cooled by the quench chamber, the syngas can be used as a chemical raw material or energy in subsequent processes, realizing the resource utilization of wastewater and energy recovery. Another small portion of the wastewater, transported through branch pipe 10, undergoes a series of processes: initial impurity removal in the primary sedimentation tank, buffering and regulation in the emergency tank, enhanced flocculation and sedimentation in the regulating tank (which is converted into a two-stage reaction chamber and sedimentation chamber), biodegradation in the anaerobic and aerobic tanks, and deep purification in the air flotation device. Finally, it is temporarily stored in the effluent tank before being discharged in compliance with standards.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A system for recycling high-concentration organic wastewater, comprising a buffer tank (1), characterized in that, The buffer pool (1) is provided in two sets, and the two sets are fixedly connected by pipes. One side of the buffer pool (1) is fixedly connected to a main pipe (2), and one end of the main pipe (2) is fixedly connected to three diversion pipes (3), and the bottom end of each diversion pipe (3) is fixedly connected to a coal mill (4). A cleaning component (5) is fixedly installed between the main pipe (2) and the branch pipe (3), and a water pump (6) is fixedly sleeved on the outer wall of one end of the branch pipe (3).

2. The system for recycling high-concentration organic wastewater according to claim 1, characterized in that, The cleaning component (5) includes a cleaning cylinder (501), which is fixedly installed inside the bracket (8). A filter tube (502) is rotatably installed at the inner cavity axis of the cleaning cylinder (501) via a bearing. A rotating shaft (503) is rotatably connected to the inner cavity of the filter tube (502) via a bearing. Multiple sets of stirring paddles (504) are fixedly installed on the outer surface of the rotating shaft (503).

3. The system for recycling high-concentration organic wastewater according to claim 2, characterized in that, Two sets of inner scrapers (506) are fixedly installed on the outer surface of the rotating shaft (503), and an outer scraper (507) is fixedly installed on the inner wall of the cleaning cylinder (501), with one side of the outer scraper (507) in contact with the outer wall of the filter tube (502).

4. A system for recycling high-concentration organic wastewater according to claim 2, characterized in that, The rotating shaft (503) passes through the filter tube (502) and a drive gear (510) is fixedly sleeved on the outer wall of one end. A rotating sleeve (511) is fixedly connected to the end of the filter tube (502) near the drive gear (510). An internal gear ring (512) is fixedly installed on the inner wall of the rotating sleeve (511). A transmission gear (513) is rotatably connected inside the rotating sleeve (511) through a pin. The transmission gear (513) is located between the drive gear (510) and the internal gear ring (512), and the three mesh with each other.

5. A system for recycling high-concentration organic wastewater according to claim 1, characterized in that, A pipe rack (7) is installed on one side of the coal mill (4), and the three diversion pipes (3) are laid on the top surface of the pipe rack (7). A bracket (8) is fixedly connected to the side of the pipe rack (7) near the cleaning component (5).

6. A system for recycling high-concentration organic wastewater according to claim 1, characterized in that, One of the buffer pools (1) is fixedly connected to a water supply pipe (9) on one side, and the other buffer pool (1) is fixedly connected to a branch pipe (10) on the side away from the water supply pipe (9).

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