A sewage multi-pool pipeline series concentration reduction discharge system and use method

Abstract

The present application relates to sewage treatment technical field, the present application discloses a kind of sewage multi-pool pipeline series connection concentration reduction effluent systems and use method, including sewage pool, reserve pool, rainwater pool, concentration detection mechanism, the number of the sewage pool is not less than 2, the sewage pool is collected independent factory area sewage by factory area sewage pipe, and the shunt branch pipe of the factory area sewage pipe is all one-way connected to factory pollution main pipe, the sewage pool is discharged sewage by lifting pipe, and the lifting pipe is all one-way connected to sedimentation main pipe, rainwater in the rainwater pool is transported to detection delivery pipe by backflushing pipe;With factory pollution main pipe, sedimentation main pipe is connected into detection delivery pipe in the mode that factory area sewage pipe is connected to factory pollution main pipe, lifting pipe is connected to sedimentation main pipe, while backflushing pipe, detection delivery pipe are connected to rainwater pool, reserve pool, to realize new and old ratio, new and new ratio, old and old ratio, new rain ratio, backflushing, the multiple operation modes of sewage pool direct matching effluent.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a multi-tank pipeline series system for reducing concentration and discharging wastewater, and its usage method. Background Technology

[0002] Within chemical manufacturing plants, equipment clusters are distributed according to their functions. For some specialized enterprises, wastewater is temporarily stored and periodically transported to specialized wastewater treatment plants for treatment.

[0003] For convenient storage, multiple wastewater ponds will be set up within the plant area, distributed along with the equipment clusters. To improve economic efficiency, wastewater will be selectively discharged externally in proportion to achieve compliant and effective discharge, while reducing storage load.

[0004] However, during equipment shutdown and startup, the wastewater concentration can change drastically. High-concentration wastewater enters the wastewater tank, causing the liquid level to rise and the concentration to exceed the limits set by the wastewater treatment plant. This high-concentration wastewater is difficult to treat. Conversely, when the wastewater concentration falls below the plant's limits, costs increase. In such cases, it is necessary to pump out some of the high-concentration wastewater from the tank, fill it with low-concentration wastewater, rainwater, or tap water to reduce the concentration before discharge, and then return the pumped-out high-concentration wastewater to its original location for further treatment. This process is cumbersome. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-tank pipeline series system for reducing concentration and discharging wastewater, and a method for using it, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A multi-tank pipeline series system for reducing concentration and discharging wastewater includes a wastewater tank, a storage tank, a rainwater tank, and a concentration detection device. The number of wastewater tanks is not less than two. The wastewater tanks collect wastewater from the independent plant area through the plant area wastewater pipe, and the branch pipes of the plant area wastewater pipe are all unidirectionally connected to the main plant wastewater pipe. The sewage tank discharges sewage through riser pipes, and each riser pipe is unidirectionally connected to the sedimentation main pipe. Rainwater in the rainwater tank is transported to the detection and delivery pipe through a backflushing pipe. The sampling branch of the detection and delivery pipe is connected to the concentration detection mechanism. The main sewage pipe and the sedimentation main pipe are both connected to the detection and delivery pipe. The end of the detection and delivery pipe is connected to the storage tank. The storage tank has an output pipe that discharges to the sewage treatment plant.

[0007] As a further embodiment of the present invention: the end of the detection and delivery pipe has multiple discharge branch pipes, the number of discharge branch pipes being equal to the sum of the number of the sewage tank and the storage tank, and the discharge branch pipes are respectively connected to the sewage tank and the storage tank.

[0008] As a further aspect of the present invention, each of the sewage tanks is equipped with an output pipe that is directly connected to the sewage treatment plant.

[0009] As a further aspect of the present invention: liquid level sensors are installed in the sewage tank and the rainwater tank, and the storage tank is kept empty when not in use.

[0010] As a further embodiment of the present invention: the concentration detection mechanism has several sets of dual-channel chambers, each set of dual-channel chambers consists of a main sample chamber and a sample preparation chamber connected in series, and the volumes of the main sample chamber and the sample preparation chamber in each set of dual-channel chambers are different, but the sum of the volumes of the main sample chamber and the sample preparation chamber in each set of dual-channel chambers is the same.

[0011] As a further embodiment of the present invention: the sampling branch of the detection delivery pipe is connected to two independent bypasses, one of which is connected to several main sample chambers, and the other is connected to several sample preparation chambers.

[0012] As a further embodiment of the present invention: a valve is provided in the connecting pipe between the main sample chamber and the sample preparation chamber, and the mixture of the main sample chamber and the sample preparation chamber is transported to the detector for detection.

[0013] As a further aspect of the present invention, a method for using a multi-tank pipeline series-connected sewage concentration reduction and discharge system includes: A: Wastewater from the plant enters the wastewater pool through the plant wastewater pipe. Some liquid enters the concentration detection agency through the main wastewater pipe and the detection and delivery pipe to detect the concentration. When the wastewater in the plant is in a high concentration state, the channel from the plant wastewater pipe to the wastewater pool is closed. High-concentration wastewater enters the storage tank through the main wastewater pipe and the detection and delivery pipe for temporary storage. High-concentration wastewater samples are left in the concentration detection agency. Wastewater is sequentially drawn from the wastewater tank through a riser pipe, and the concentration is tested and mixed by a concentration detection agency until the concentration meets the discharge requirements. The liquid in the wastewater tank is then taken into the storage tank through the sedimentation main pipe and the detection and delivery pipe to reduce the wastewater concentration in the storage tank before being discharged.

[0014] B: Wastewater from both plant areas enters the plant wastewater pipe simultaneously. Through a staggered opening and closing mechanism, wastewater samples from both plant areas are obtained sequentially by the concentration detection agency. With the main wastewater pipe closed, wastewater enters the wastewater pool through the plant wastewater pipe. When the concentration detection agency obtains wastewater that meets the discharge standards based on different sample ratios, wastewater from both plant areas enters the main wastewater pipe simultaneously through branches of the plant wastewater pipe and then enters the storage tank through the main wastewater pipe.

[0015] C: In the absence of wastewater from the plant area, the riser pipes sequentially draw the temporarily stored wastewater from the wastewater tanks to the concentration testing agency through a staggered opening and closing mechanism. This allows the concentration testing agency to obtain multiple liquid samples from the wastewater tanks. When the concentration of the mixed wastewater meets the discharge requirements, the wastewater from the two wastewater tanks can be simultaneously or sequentially injected into the storage tank through the sedimentation main pipe and the testing and conveying pipe, and then discharged to the wastewater treatment plant.

[0016] D: When the sewage in the sewage tank cannot meet the mixing requirements of the sewage in the plant area, and the sewage in the plant area is in a high concentration state, the sewage in the plant area first enters the storage tank through the main sewage pipe and the detection and delivery pipe, and then the rainwater in the rainwater tank is drawn into the storage tank through the backflushing pipe to dilute the high concentration sewage before it is discharged.

[0017] E: During the concentration testing process, other non-testing wastewater generated by the concentration testing agency enters the storage tank. After the test is completed, rainwater is added through the rainwater tank and enters the backwash pipe. The rainwater flushes the testing delivery pipe and then enters the storage tank. The wastewater in the storage tank is reduced in concentration to meet the discharge requirements. At the same time, the residue inside the testing delivery pipe is reduced, improving the accuracy of the test.

[0018] Compared with the prior art, the beneficial effects of the present invention are: This technical solution, based on the existing sewage tank, adopts a method of connecting the plant's sewage pipe to the main sewage pipe and the lift pipe to the sedimentation main pipe. The main sewage pipe and sedimentation main pipe are connected to the detection and delivery pipe. At the same time, the backflushing pipe and the detection and delivery pipe connect the rainwater tank and the storage tank, thereby realizing multiple types of operation modes such as new and old water ratio, new and new water ratio, old and old water ratio, new and rainwater ratio, backflushing and return, and direct discharge from the sewage tank. It can cope with the problem of large changes in sewage concentration during plant shutdown and operation, increase operational flexibility, and can be operated manually or connected to an intelligent control system for automatic processing and distribution. It completely solves the problem of difficult sewage distribution under fixed volume, while controlling the concentration of discharged sewage to meet the standards for use by sewage treatment plants, increasing economy and applicability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an embodiment of a multi-tank pipeline series system for reducing concentration and discharging wastewater. Figure 2 This is a schematic diagram of a second embodiment of a multi-tank pipeline series system for reducing concentration and discharging wastewater; Figure 3This is a schematic diagram of a third embodiment of a multi-tank pipeline series system for reducing concentration and discharging wastewater; In the diagram: 1. Wastewater tank; 2. Storage tank; 3. Rainwater tank; 11. Plant wastewater pipe; 12. Lifting pipe; 4. Plant wastewater main pipe; 5. Settling main pipe; 6. Detection and delivery pipe; 7. Backflushing pipe; 8. Concentration detection mechanism; 81. Main sample chamber; 82. Sample preparation chamber; 83. Detector. Detailed Implementation

[0021] Please see Figures 1-3 Example 1: In this embodiment, the system includes a wastewater tank 1, a storage tank 2, a rainwater tank 3, and a concentration detection mechanism 8. There are at least two wastewater tanks 1. The wastewater tanks 1 collect wastewater from the independent factory area through the factory wastewater pipe 11, and the branch pipes of the factory wastewater pipe 11 are all unidirectionally connected to the main wastewater pipe 4. The wastewater tanks 1 discharge wastewater through the lift pipe 12, and the lift pipe 12 is unidirectionally connected to the sedimentation main pipe 5. The rainwater in the rainwater tank 3 is transported to the detection and delivery pipe 6 through the backflushing pipe 7. The sampling branch pipe of the detection and delivery pipe 6 is connected to the concentration detection mechanism 8. The main wastewater pipe 4 and the sedimentation main pipe 5 are both connected to the detection and delivery pipe 6. The end of the detection and delivery pipe 6 is connected to the storage tank 2. The storage tank 2 has an output pipe that discharges to the wastewater treatment plant.

[0022] This embodiment employs a novel processing method, connecting the wastewater tank 1, storage tank 2, rainwater tank 3, and concentration detection device 8 in series to form the following configuration: Method 1: New and old ratio: Wastewater from the plant enters the wastewater pool 1 through the plant wastewater pipe 11. Some liquid enters the concentration detection device 8 through the plant wastewater main pipe 4 and the detection and delivery pipe 6 to detect the concentration. When the wastewater in the plant is in a high concentration state, the channel from the plant wastewater pipe 11 to the wastewater pool 1 is closed. The high-concentration wastewater enters the storage pool 2 through the plant wastewater main pipe 4 and the detection and delivery pipe 6 for temporary storage. A high-concentration wastewater sample is retained in the concentration detection device 8. Wastewater is sequentially drawn from wastewater tank 1 through riser pipe 12 and tested and mixed by concentration detection mechanism 8 until the concentration meets the discharge requirements. The liquid in wastewater tank 1 is then taken into storage tank 2 through sedimentation main pipe 5 and detection and conveying pipe 6 to reduce the wastewater concentration in storage tank 2 before being discharged.

[0023] Method Two: New Mixing Ratio Wastewater from both plants enters the plant wastewater pipe 11 simultaneously. Through a staggered opening and closing mechanism, the concentration detection device 8 sequentially obtains wastewater samples from both plants. With the main wastewater pipe 4 closed, wastewater enters the wastewater pool 1 through the plant wastewater pipe 11. When the concentration detection device 8 obtains wastewater that meets the discharge standards based on different sample ratios, the wastewater from both plants simultaneously enters the main wastewater pipe 4 through a branch of the plant wastewater pipe 11 and then enters the storage pool 2 through the main wastewater pipe 4.

[0024] Additional notes: A flow valve needs to be added to the branch pipe of the plant sewage pipe 11 to control the flow rate of the plant sewage pipe 11 into the main sewage pipe 4, thereby meeting the mixing ratio requirements.

[0025] Method 3: Old-to-Old Ratio In the absence of wastewater from the plant area, the riser pipe 12 sequentially draws the temporarily stored wastewater from the wastewater tank 1 to the concentration detection device 8 through a staggered opening and closing mechanism. This allows the concentration detection device 8 to obtain multiple liquid samples from the wastewater tank 1. When the concentration of the mixed wastewater meets the discharge requirements, the wastewater from the two wastewater tanks 1 can be simultaneously or sequentially injected into the storage tank 2 through the sedimentation main pipe 5 and the detection and delivery pipe 6, and then discharged to the wastewater treatment plant.

[0026] Method 4: New Rain Mixture Ratio When the sewage in sewage tank 1 cannot meet the mixing requirements of the sewage in the plant area, and the sewage in the plant area is in a high concentration state, the sewage in the plant area first enters the storage tank 2 through the main sewage pipe 4 and the detection and conveying pipe 6, and then the rainwater in the rainwater tank 3 is drawn into the storage tank 2 through the backflushing pipe 7 to dilute the high concentration sewage before discharge.

[0027] Additional explanation: During the concentration testing process of the concentration testing agency 8, other non-test wastewater generated enters the storage tank 2. After the test is completed, rainwater is added through the rainwater tank 3 and enters the backwash pipe 7. The rainwater washes the test delivery pipe 6 and then enters the storage tank 2. The wastewater in the storage tank 2 is reduced in concentration to meet the discharge requirements. At the same time, the residue inside the test delivery pipe 6 is reduced, improving the accuracy of the test.

[0028] Example 2:

[0029] This embodiment adds the following content based on Embodiment 1: The end of the detection and delivery pipe 6 has multiple discharge branch pipes. The number of discharge branch pipes is equal to the sum of the number of sewage tank 1 and storage tank 2, and the discharge branch pipes are connected to sewage tank 1 and storage tank 2 respectively.

[0030] The purpose of this setup is that, during the wastewater testing process in the factory area, the wastewater flows back to the corresponding wastewater tank 1 through the factory wastewater pipe 11, the main wastewater pipe 4, and the testing and conveying pipe 6. At the same time, if the wastewater remaining in other wastewater tanks 1 is mixed with the factory wastewater according to the specified ratio to meet the discharge conditions, it can also be directly discharged into the mixed wastewater tank 1 through the testing and conveying pipe 6.

[0031] To improve operational flexibility, each sewage tank 1 is equipped with an output pipe that directly connects to the sewage treatment plant.

[0032] When the sewage concentration in sewage tank 1 meets the discharge requirements, sewage tank 1 can be discharged, and there is no need to start the storage tank 2 at this time.

[0033] Liquid level sensors are installed in sewage tank 1 and rainwater tank 3, and storage tank 2 is kept empty when not in use.

[0034] The liquid level sensor can detect the liquid level in sewage tank 1 and rainwater tank 3. Based on the liquid level, the volume of replenished sewage can be obtained. When the volume of replenished sewage does not meet the concentration reduction index after mixing, the storage tank 2 is activated for adjustment.

[0035] Example 3:

[0036] The concentration detection mechanism 8 has several sets of dual-channel chambers. Each set of dual-channel chambers consists of a main sample chamber 81 and a sample preparation chamber 82 connected in series. The volumes of the main sample chamber 81 and the sample preparation chamber 82 in each set of dual-channel chambers are different, but the sum of the volumes of the main sample chamber 81 and the sample preparation chamber 82 in each set of dual-channel chambers is the same. The sampling branch of the detection delivery pipe 6 is connected to two independent bypasses. One independent bypass is connected to several main sample chambers 81, and the other independent bypass is connected to several sample preparation chambers 82.

[0037] For details, please refer to [link / reference]. Figure 3 When the sampling branch of the detection delivery pipe 6 is opened, the sewage is injected into the main sample chamber 81 through an independent bypass. Similarly, another stream of sewage or rainwater is injected into the sample mixing chamber 82. A single injection can form a multi-proportion mixed sample.

[0038] A valve is installed in the connecting pipe between the main sample chamber 81 and the sample preparation chamber 82, and the mixture of the main sample chamber 81 and the sample preparation chamber 82 is transported to the detector 83 for detection.

[0039] When the valve is opened, the main sample chamber 81 and the mixing chamber 82 are mixed and tested. After screening, the residual volume obtained by the preceding liquid level sensor is used as a reference for mixing in wastewater tank 1. If the residual volume is insufficient, mixing is carried out through storage tank 2.

[0040] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-tank pipeline series system for reducing concentration and discharging wastewater, comprising a wastewater tank (1), a storage tank (2), a rainwater tank (3), and a concentration detection mechanism (8), characterized in that: The number of sewage tanks (1) is not less than 2. The sewage tanks (1) collect sewage from the independent factory area through the factory area sewage pipe (11), and the branch pipes of the factory area sewage pipe (11) are all unidirectionally connected to the main sewage pipe (4). The sewage tank (1) discharges sewage through the riser pipe (12), and the riser pipe (12) is unidirectionally connected to the sedimentation main pipe (5). Rainwater in the rainwater pool (3) is transported to the detection and delivery pipe (6) through the backflushing pipe (7). The sampling branch of the detection and delivery pipe (6) is connected to the concentration detection mechanism (8). The main sewage pipe (4) and the sedimentation main pipe (5) are both connected to the detection and delivery pipe (6). The end of the detection and delivery pipe (6) is connected to the storage tank (2). The storage tank (2) has an output pipe that discharges to the sewage treatment plant.

2. The sewage multi-tank pipeline series deconcentration and discharge system according to claim 1, characterized in that: The end of the detection and delivery pipe (6) has multiple discharge branch pipes, the number of which is equal to the sum of the number of the sewage tank (1) and the storage tank (2), and the discharge branch pipes are connected to the sewage tank (1) and the storage tank (2) respectively.

3. The sewage multi-tank pipeline series deconcentration and discharge system according to claim 1, characterized in that: Each of the sewage tanks (1) is equipped with an output pipe that is directly connected to the sewage treatment plant.

4. A multi-tank pipeline series deconcentration and discharge system for sewage according to claim 1, characterized in that: Liquid level sensors are installed in the sewage tank (1) and the rainwater tank (3), and the storage tank (2) is kept empty when not in use.

5. A multi-tank pipeline series deconcentration and discharge system for sewage according to claim 1, characterized in that: The concentration detection mechanism (8) has several sets of dual-channel chambers. Each set of dual-channel chambers consists of a main sample chamber (81) and a sample preparation chamber (82) connected in series. The volumes of the main sample chamber (81) and the sample preparation chamber (82) in each set of dual-channel chambers are different, and the sum of the volumes of the main sample chamber (81) and the sample preparation chamber (82) in each set of dual-channel chambers is the same.

6. A multi-tank pipeline series deconcentration and discharge system for sewage according to claim 5, characterized in that: The sampling branch of the detection delivery pipe (6) is connected to two independent bypasses. One of the independent bypasses is connected to several of the main sample chambers (81), and the other independent bypass is connected to several of the sample preparation chambers (82).

7. A multi-tank pipeline series-connected sewage deconcentration and discharge system according to claim 5, characterized in that: The connecting pipe between the main sample chamber (81) and the sample preparation chamber (82) is equipped with a valve, and the mixture of the main sample chamber (81) and the sample preparation chamber (82) is transported to the detector (83) for detection.

8. The method of using a multi-tank pipeline series deconcentration and discharge system for sewage according to any one of claims 1-7, characterized in that: include: A: Wastewater from the plant enters the wastewater pool (1) through the plant wastewater pipe (11). Some liquid enters the concentration detection device (8) through the plant wastewater main pipe (4) and the detection and delivery pipe (6) to detect the concentration. When the wastewater in the plant is in a high concentration state, the channel from the plant wastewater pipe (11) to the wastewater pool (1) is closed. High-concentration wastewater enters the storage pool (2) through the plant wastewater main pipe (4) and the detection and delivery pipe (6) for temporary storage. High-concentration wastewater samples are retained in the concentration detection device (8). Wastewater in the wastewater tank (1) is sequentially drawn through the riser pipe (12), and the concentration is tested and mixed through the concentration detection mechanism (8) until the concentration meets the discharge requirements. The liquid in the wastewater tank (1) is taken into the storage tank (2) through the sedimentation main pipe (5) and the detection and conveying pipe (6) to reduce the wastewater concentration in the storage tank (2) before being discharged. B: Wastewater from both plant areas enters the plant wastewater pipe (11) simultaneously. Through the alternating opening and closing, the concentration detection mechanism (8) sequentially obtains wastewater samples from the two plant areas. With the main wastewater pipe (4) closed, the wastewater enters the wastewater pool (1) through the plant wastewater pipe (11). When the concentration detection mechanism (8) obtains wastewater that meets the discharge standards according to different sample ratios, the wastewater from the two plant areas enters the main wastewater pipe (4) simultaneously through the branch of the plant wastewater pipe (11) and enters the storage pool (2) through the main wastewater pipe (4). C: In the absence of sewage from the plant area, the riser pipe (12) sequentially draws the temporarily stored sewage in the sewage tank (1) to the concentration detection mechanism (8) through an alternating opening and closing mechanism, so that the concentration detection mechanism (8) can obtain liquid samples from multiple sewage tanks (1). When the sewage concentration after mixing meets the discharge requirements, the sewage in the two sewage tanks (1) can be injected into the storage tank (2) simultaneously or sequentially through the sedimentation main pipe (5) and the detection and delivery pipe (6), and discharged to the sewage treatment plant. D: When the sewage in the sewage tank (1) cannot meet the proportioning requirements of the sewage in the plant area, and the sewage in the plant area is in a high concentration state, the sewage in the plant area first enters the storage tank (2) through the main sewage pipe (4) and the detection and conveying pipe (6), and then draws rainwater from the rainwater tank (3) through the backflushing pipe (7) into the storage tank (2) to dilute the high concentration sewage before discharge. E: During the concentration detection process (8), other non-detection wastewater generated enters the storage tank (2). After the detection is completed, rainwater is added through the rainwater tank (3) and enters the backwash pipe (7). The rainwater washes the detection delivery pipe (6) and then enters the storage tank (2). The wastewater in the storage tank (2) is reduced to meet the discharge requirements. At the same time, the residue in the detection delivery pipe (6) is reduced, which improves the detection accuracy.

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