Sewage distribution device and sewage distribution method

Abstract

The present application relates to a kind of sewage blending device and sewage blending method, sewage blending device includes: raw pulp pool;Blending pool;Sewage monitoring device, with blending pool intercommunication, for real-time detection sewage concentration in blending pool;Wherein the sewage concentration in raw pulp pool is lower than the first set concentration, and the sewage in raw pulp pool is transported to blending pool.The present application can measure sewage concentration while carrying out sewage blending, greatly improve sewage blending efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater mixing device and a wastewater mixing method. Background Technology

[0002] Zero wastewater discharge is a challenging issue today, especially with increasingly stringent requirements for wastewater treatment in concrete mixing plants. The main sources of wastewater include wastewater from cleaning mixer trucks and substandard concrete.

[0003] To achieve zero wastewater discharge, people hope to utilize this wastewater in concrete mixing. However, wastewater contains a variety of complex substances, and its concentration has a significant impact on concrete performance. If wastewater with excessive concentrations is added to concrete, it may pose safety hazards to civil engineering structures and even cause major accidents. Therefore, it is necessary to adjust the wastewater to meet the required concentration to ensure concrete performance.

[0004] In related technologies, wastewater is first weighed using a weighing tank to calculate its concentration. Based on this concentration, an appropriate amount of clean water is added to the wastewater to prepare it to meet a standard concentration. Then, each batch of prepared wastewater is placed into a finished product tank. This method of preparing wastewater tank by tank is inconvenient and inefficient. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a wastewater mixing device and a wastewater mixing method.

[0006] The present invention provides a wastewater mixing device, comprising: a raw slurry tank; a mixing tank; and a wastewater monitoring device connected to the mixing tank for real-time detection of the wastewater concentration in the mixing tank; wherein, when the wastewater concentration in the raw slurry tank is lower than a first set concentration, the wastewater in the raw slurry tank is transported to the mixing tank.

[0007] In some embodiments, the raw pulp tank and the wastewater monitoring device may be selectively connected, and the wastewater monitoring device is also used to detect the wastewater concentration in the raw pulp tank.

[0008] In some embodiments, the system further includes: a thickening tank; a separation device, wherein the inlet of the separation device is selectively connected to the raw slurry tank, and the first outlet of the separation device is selectively connected to the raw slurry tank; and / or the first outlet of the separation device is selectively connected to the blending tank; wherein, when the wastewater concentration in the raw slurry tank is higher than or equal to the first set concentration, the inlet of the separation device is connected to the raw slurry tank, and the first outlet of the separation device is connected to the raw slurry tank and / or the blending tank, so that the wastewater in the raw slurry tank is transported to the separation device, so that the low-concentration wastewater discharged from the wastewater in the raw slurry tank via the first outlet of the separation device is transported to the raw slurry tank and / or the blending tank, and the high-concentration wastewater separated by the separation device from the wastewater in the raw slurry tank flows from the second outlet of the separation device to the thickening tank.

[0009] In some embodiments, a third liquid level detection device is provided in the mixing tank for detecting the sewage level in the mixing tank; wherein, when the sewage concentration in the raw slurry tank is higher than or equal to the first set concentration, and the sewage level in the mixing tank is higher than the third set liquid level, the inlet of the separation device is connected to the first water pump in the raw slurry tank, and the first outlet of the separation device is connected to the raw slurry tank, so that the sewage in the raw slurry tank is transported to the separation device by the first water pump, so that the low-concentration sewage discharged from the sewage in the raw slurry tank through the first outlet of the separation device is transported to the raw slurry tank; when the sewage concentration in the raw slurry tank is higher than or equal to the first set concentration, and the sewage level in the mixing tank is lower than the third set liquid level, the inlet of the separation device is connected to the first water pump in the raw slurry tank, and the first outlet of the separation device is connected to the mixing tank, so that the sewage in the raw slurry tank is transported to the separation device by the first water pump, so that the low-concentration sewage discharged from the sewage in the raw slurry tank through the first outlet of the separation device is transported to the mixing tank.

[0010] In some embodiments, the thickening tank and the blending tank may be selectively connected; wherein, when the wastewater monitoring device detects that the wastewater concentration in the blending tank is lower than a set standard concentration, the wastewater in the thickening tank is transported to the blending tank.

[0011] In some embodiments, the slurry tank is selectively connected to the wastewater monitoring device, which is also used to detect the wastewater concentration in the slurry tank; the slurry tank is selectively connected to the inlet of the separation device; wherein, when the wastewater concentration in the slurry tank is lower than a second set concentration, the slurry tank is connected to the inlet of the separation device, the first outlet of the separation device is connected to the mixing tank and / or the raw slurry tank, the wastewater in the slurry tank is transported to the hydrocyclone, so that the low-concentration wastewater from the slurry tank is transported to the mixing tank and / or the raw slurry tank via the first outlet of the separation device, and the high-concentration wastewater from the slurry tank is separated by the separation device and flows from the second outlet of the separation device to the slurry tank.

[0012] In some embodiments, the mixing tank and the inlet of the separation device may be selectively connected; wherein, when the concentration in the mixing tank is higher than a preset standard concentration, the mixing tank is connected to the inlet of the separation device, and the first outlet of the separation device is connected to the raw slurry tank and / or the mixing tank, so that the low-concentration wastewater discharged from the wastewater in the mixing tank via the first outlet of the separation device is transported to the raw slurry tank and / or the mixing tank.

[0013] In some embodiments, the device further includes: a settling container having a top inlet, a bottom outlet, and a discharge port located between the top inlet and the bottom outlet; a first outlet of the separation device communicating with the top inlet, the bottom outlet communicating with the thickening tank, and the discharge port communicating with the raw slurry tank and / or the blending tank.

[0014] The present invention also provides a wastewater mixing method, applied to the wastewater mixing device described in any of the above embodiments. The method includes: detecting the wastewater concentration in the raw slurry tank; if the wastewater concentration in the raw slurry tank is lower than a first set concentration, then transporting the wastewater in the raw slurry tank to the mixing tank; if the wastewater concentration in the raw slurry tank is higher than the first set concentration, then connecting the raw slurry tank to the inlet of a separation device, and connecting the first outlet of the separation device to the raw slurry tank and / or the concentrated slurry tank, wherein the wastewater in the raw slurry tank is transported to the separation device, so that low-concentration wastewater discharged from the wastewater in the raw slurry tank via the first outlet of the separation device is transported to the raw slurry tank and / or the mixing tank, and high-concentration wastewater separated from the wastewater in the raw slurry tank by the separation device flows from the second outlet of the separation device to the concentrated slurry tank.

[0015] In some embodiments, the method further includes: detecting the wastewater concentration in the mixing tank; if the wastewater concentration in the mixing tank is lower than a set standard concentration, then transporting the wastewater in the thickening tank to the mixing tank until the wastewater concentration in the mixing tank reaches the set standard concentration.

[0016] In some embodiments, the method further includes: detecting the concentration of wastewater in the mixing tank; if the concentration in the mixing tank is higher than a preset standard concentration, then connecting the mixing tank to the inlet of the separation device, and connecting the first outlet of the separation device to the raw slurry tank and / or the mixing tank, so that the low-concentration wastewater discharged from the mixing tank via the first outlet of the separation device is transported to the raw slurry tank and / or the mixing tank.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] This invention uses a first water pump to transport wastewater from the raw slurry tank to the mixing tank, and uses a wastewater monitoring device to monitor the wastewater concentration in the mixing tank in real time. The mixing is carried out while monitoring, which greatly improves efficiency compared to the mixing method of mixing tank by tank in related technologies.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0020] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0021] Figure 1 This is a block diagram of a wastewater mixing device according to an exemplary embodiment of the present invention;

[0022] Figure 2 This is illustrated according to an exemplary embodiment of the present invention. Figure 1 Enlarged schematic diagram of the middle section structure;

[0023] Figure 3 This is a flowchart illustrating a wastewater preparation method according to an exemplary embodiment of the present invention;

[0024] Figure 4 This is a flowchart illustrating a wastewater preparation method according to another exemplary embodiment of the present invention;

[0025] Figure 5This is a perspective view of a wastewater monitoring device according to an exemplary embodiment of the present invention;

[0026] Figure 6 This is a front view of a wastewater monitoring device according to an exemplary embodiment of the present invention;

[0027] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] like Figure 1 and Figure 2 As shown, the present invention provides a wastewater mixing device, including: a raw slurry tank 10 and a mixing tank 30.

[0031] The raw slurry tank 10 is used to contain wastewater sources, which can be wastewater generated after cleaning the mixer truck, wastewater from substandard concrete waste, etc. For example, a cleaning wastewater recovery tank can be set up on site, and the cleaning wastewater in it can be pumped to a sand and gravel separator and then recycled back to the raw slurry tank 10.

[0032] In one example, a filter plate can be installed in the raw slurry tank 10 to divide the raw slurry tank 10 into two containment areas, such as a loading area and a filtration area. The sewage source can first be poured into the loading area, filtered by the filter plate, and then flow into the filtration area to filter out larger particulate matter in the sewage.

[0033] A first water pump 11 can be installed in the raw pulp tank 10 to transport the sewage in the raw pulp tank 10 to the required location.

[0034] The mixing tank 30 is used to adjust the concentration of wastewater. A wastewater monitoring device 31 is connected to the mixing tank 30 and is used to monitor the wastewater concentration within the mixing tank 30 in real time. For example, the wastewater monitoring device 31 can be located above the mixing tank 30. If the wastewater concentration in the mixing tank 30 meets the set standard concentration, the wastewater in the mixing tank 30 can be transported to the finished product tank 40 for use by the mixing plant.

[0035] When the wastewater concentration in the raw slurry tank 10 is lower than a first set concentration, the first water pump 11 transports the wastewater in the raw slurry tank 10 to the mixing tank 30. The first set concentration value can be lower than a set standard concentration. In this embodiment of the invention, a water pump can also be omitted, and the wastewater in the raw slurry tank 10 can flow into the mixing tank 30 by its own gravity. For example, the outlet of the raw slurry tank 10 can be higher than that of the mixing tank 30.

[0036] When in use, the wastewater in the raw pulp tank 10 can be tested first. If the concentration of wastewater in the raw pulp tank 10 is lower than the first set concentration, it means that it can be used directly. At this time, the wastewater in the raw pulp tank 10 can be directly transported to the mixing tank through the first water pump 11.

[0037] The present invention uses a first water pump 11 or the gravity of the sewage itself to transport the sewage in the raw slurry tank 10 to the mixing tank, and uses a sewage monitoring device 31 to detect the sewage concentration in the mixing tank in real time. The mixing is carried out while monitoring, which greatly improves efficiency compared with the mixing method of one tank at a time in related technologies.

[0038] In various embodiments of the present invention, the sewage in each sewage tank (raw slurry tank 10, mixing tank 30, thickening tank 20) ​​can be transported by means of pumping with a water pump or by means of the sewage's own gravity. In the following description, sewage is transported by means of pumping with a water pump, but it is not limited to this. It can be understood that in some possible embodiments, it is not necessary to pump the sewage with a water pump, that is, the sewage can be transported to the required sewage tank by means of its own gravity.

[0039] In one example, the raw material tank 10 is selectively connected to the wastewater monitoring device 31 via a first water pump 11. The wastewater monitoring device is also used to detect the wastewater concentration within the raw material tank 10. In this context, selective connection means that the connection channel can be opened or closed. For example, the channel connecting the first water pump 11 and the wastewater monitoring device 31 can be switched between open and closed; that is, the channel connecting the first water pump 11 and the wastewater monitoring device 31 can be connected or disconnected. For instance, the first water pump 11 and the wastewater monitoring device 31 are connected via a first pipeline L1, and a solenoid valve is installed on the first pipeline L1. The selective connection between the first water pump 11 and the wastewater monitoring device 31 is achieved by opening and closing the solenoid valve.

[0040] The wastewater in the raw slurry tank 10 is detected by the wastewater monitoring device 31. If the wastewater concentration in the raw slurry tank 10 is low and below the standard concentration, the first water pump 11 can be continuously turned on to transport the wastewater in the raw slurry tank 10 to the mixing tank 30 during the detection process.

[0041] In another example, a wastewater monitoring device 31 is used to intermittently measure the wastewater concentration in the raw slurry tank 10. If the wastewater concentration is lower than a first set concentration, the wastewater in the raw slurry tank 10 can be used to flush the tanker truck, thereby increasing the wastewater concentration in the raw slurry tank 10. This reduces the use of clean water when flushing the tanker truck.

[0042] When the wastewater concentration in the raw slurry tank 10 is equal to or higher than the set value, the tanker truck can be washed with clean water to reduce the wastewater concentration in the raw slurry tank 10. The wastewater in the raw slurry tank then enters the mixing tank for further mixing. The wastewater is then moved to the mixing tank only when the concentration in the raw slurry tank is close to the set value, thus accelerating the wastewater mixing process.

[0043] In another example, the first water pump 11 is connected to the mixing tank 30 via a second pipeline, on which a solenoid valve is installed. The solenoid valve on the first pipeline L1 can be opened first to test the wastewater in the raw slurry tank 10. If it meets the standards, the solenoid valve on the first pipeline L1 is closed. Then, the solenoid valve on the second pipeline is opened, and the wastewater in the raw slurry tank 10 is transported to the mixing tank 30 via the first water pump 11. During this process, the wastewater monitoring device 31 in the mixing tank 30 can be activated to continuously monitor the wastewater in the mixing tank 30 to ensure that the wastewater concentration meets the standards.

[0044] In some embodiments, the wastewater mixing device further includes a thickening tank 20 and a separation device. The separation device is used to separate wastewater into low-concentration wastewater and high-concentration wastewater. The separation device includes an inlet, a first outlet, and a second outlet. Wastewater enters through the inlet and is separated by the separation device. The low-concentration wastewater is discharged from the first outlet and flows into the desired wastewater tank, while the high-concentration wastewater is discharged from the second outlet and flows into the thickening tank 20. The separation device may be located above the thickening tank 20. The separation device may be a centrifuge, hydrocyclone, or other system with swirling sedimentation function to separate wastewater into low-concentration wastewater and high-concentration wastewater. In various embodiments of the present invention, although hydrocyclone 21 is used as an example of the separation device, it is not limited thereto. For example, the inlet of hydrocyclone 21 may be selectively connected to the first water pump 11, and the overflow outlet of hydrocyclone 21 may be selectively connected to the original slurry tank 10; and / or, the overflow outlet of the hydrocyclone may be selectively connected to the mixing tank 30. When the wastewater concentration in the raw slurry tank 10 is higher than the first set concentration, the inlet of the hydrocyclone 21 is connected to the first water pump 11, and the overflow port of the hydrocyclone is connected to the raw slurry tank 10 and / or the mixing tank 30. The wastewater in the raw slurry tank 10 is transported to the hydrocyclone 21 by the first water pump 11, so that the low-concentration wastewater discharged from the overflow port of the hydrocyclone 21 from the wastewater in the raw slurry tank 10 is transported to the raw slurry tank 10 and / or the mixing tank 30, and the high-concentration wastewater settled by the hydrocyclone 21 from the wastewater in the raw slurry tank 10 remains in the thick slurry tank 20.

[0045] In one example, hydrocyclone 21 is connected to the first water pump 11 via a third pipeline L3. A solenoid valve is installed on the third pipeline L3. The overflow port of hydrocyclone 21 is connected to the raw slurry tank 10 via a fourth pipeline L4. A solenoid valve is installed on the fourth pipeline L4. When the wastewater concentration in the raw slurry tank 10 is higher than a first set concentration, the solenoid valve on the third pipeline L3 opens, connecting the inlet of hydrocyclone 21 to the first water pump 11; the solenoid valve on the fourth pipeline L4 opens, connecting the overflow port of hydrocyclone 21 to the raw slurry tank 10. Wastewater from the raw slurry tank 10 is then pumped to the hydrocyclone 21 by the first water pump 11, so that the low-concentration wastewater discharged from the overflow port of hydrocyclone 21 from the raw slurry tank 10 returns to the raw slurry tank 10, thereby adjusting the concentration of wastewater in the raw slurry tank 10. At the same time, the solenoid valve on the first pipeline L1 can be opened to detect the wastewater being mixed in the raw slurry tank 10 until the wastewater in the raw slurry tank 10 is lower than the first set concentration value.

[0046] In another example, the overflow port of hydrocyclone 21 is also connected to the mixing tank 30 via a fifth pipeline L5, on which a solenoid valve is installed. Similarly, when the wastewater concentration in the raw slurry tank 10 is higher than a first set concentration, the solenoid valve on the third pipeline L3 opens, connecting the inlet of hydrocyclone 21 to the first water pump 11; the solenoid valve on the fifth pipeline L5 opens, connecting the overflow port of hydrocyclone 21 to the mixing tank 30. Wastewater from the raw slurry tank 10 is then pumped to the hydrocyclone 21 via the first water pump 11, so that the low-concentration wastewater discharged from the overflow port of hydrocyclone 21 from the raw slurry tank 10 is transported to the mixing tank 30, thereby adjusting the concentration of the wastewater in the mixing tank 30. Simultaneously, a wastewater monitoring device 31 connected to the mixing tank 30 can be activated to continuously monitor the wastewater in the mixing tank 30.

[0047] Understandably, opening the solenoid valve on the fifth pipeline L5 connects the overflow port of the hydrocyclone 21 to the mixing tank 30. At the same time, opening the solenoid valve on the fourth pipeline L4 connects the overflow port of the hydrocyclone 21 to the raw slurry tank 10. That is, the sewage in the raw slurry tank 10 is transported to the hydrocyclone 21 by the first water pump 11. This allows the low-concentration sewage discharged from the overflow port of the hydrocyclone 21 from the raw slurry tank 10 to be transported to the mixing tank 30 and the raw slurry tank 10. This allows for the concentration adjustment of the sewage in the mixing tank 30 and the sewage in the raw slurry tank 10.

[0048] Furthermore, in combination Figure 1 and Figure 2 As shown, the wastewater mixing device also includes a settling container 22 (concentration settling tank), which has a top inlet 221, a bottom outlet 222, and a discharge port 223 located between the top inlet and the bottom outlet. The overflow port of the hydrocyclone 21 is connected to the top inlet 211, the bottom outlet 222 is connected to the thickening tank 20, and the discharge port 223 is connected to the raw slurry tank 10 and / or the mixing tank 30. The settling container 22 is used to further settle and separate the liquid and solids of the wastewater discharged from the overflow port of the hydrocyclone 21, so that larger particles of wastewater (higher concentration wastewater) are located at the bottom of the settling container 22 and discharged from the bottom outlet 222 into the thickening tank 20, while cleaner wastewater (lower concentration wastewater) is transported from the discharge port 223 to the raw slurry tank 10 and / or the mixing tank 30, thereby mixing the wastewater in the raw slurry tank 10 and / or the mixing tank 30.

[0049] Understandably, in some of the examples described above and below, the wastewater separated by the overflow outlet of the hydrocyclone 21 can be directly transported to the raw slurry tank 10 and / or the blending tank 30, or it can be transported to the raw slurry tank 10 and / or the blending tank 30 after being settled again by the settling container 22.

[0050] In some embodiments, a third liquid level detection device is provided in the mixing tank 30 to detect the sewage level in the mixing tank 30. The third liquid level detection device may be, for example, a liquid level sensor. When the sewage concentration in the raw slurry tank 10 is higher than a first set concentration, and the sewage level in the mixing tank 30 is higher than a third set liquid level, it indicates that the liquid level in the mixing tank 30 is high. At this time, the inlet of the hydrocyclone 21 is connected to the first water pump 11, and the overflow port of the hydrocyclone 21 is connected to the raw slurry tank 10. The sewage in the raw slurry tank 10 is transported to the hydrocyclone 21 by the first water pump 11, so that the low-concentration sewage discharged from the overflow port of the hydrocyclone 21 from the raw slurry tank 10 is transported to the raw slurry tank 10. In other words, the wastewater concentration in the raw slurry tank 10 is high, and the liquid level in the mixing tank 30 is high. The mixing tank 30 does not need to receive wastewater. Instead, the wastewater is settled by the hydrocyclone 21, and the low-concentration wastewater separated from the high-concentration wastewater in the raw slurry tank is returned to the raw slurry tank 10, thereby adjusting the wastewater in the raw slurry tank 10.

[0051] When the wastewater concentration in the raw slurry tank 10 is higher than the first set concentration, and the wastewater level in the mixing tank 30 is lower than the third set level, it indicates that the level in the mixing tank 30 is low. At this time, the inlet of the hydrocyclone 21 is connected to the first water pump 11, and the overflow port of the hydrocyclone 21 is connected to the mixing tank 30. The wastewater in the raw slurry tank 10 is transported to the hydrocyclone 21 by the first water pump 11, so that the low-concentration wastewater discharged from the overflow port of the hydrocyclone 21 from the wastewater in the raw slurry tank 10 is transported to the mixing tank 30. In other words, the wastewater concentration in the raw slurry tank 10 is high, and the level in the mixing tank 30 is high. The mixing tank 30 does not need to receive wastewater. The high-concentration wastewater from the raw slurry tank is settled by the hydrocyclone 21, and the low-concentration wastewater separated from the high-concentration wastewater in the raw slurry tank is returned to the raw slurry tank 10, thereby adjusting the wastewater in the raw slurry tank 10.

[0052] In some embodiments, a first liquid level detection device is further provided in the raw slurry tank 10 for detecting the sewage level in the raw slurry tank 10. The first liquid level detection device may be, for example, a liquid level sensor. When the sewage concentration in the raw slurry tank 10 is higher than a first set concentration and the sewage level in the raw slurry tank 10 is higher than the first set level, the inlet of the hydrocyclone 21 is connected to the first water pump, the overflow port of the hydrocyclone 21 is connected to the mixing tank 30, and the overflow port of the hydrocyclone 21 is not connected to the raw slurry tank 10, so that the low-concentration sewage discharged from the overflow port of the hydrocyclone 21 from the raw slurry tank 10 is transported to the mixing tank 30.

[0053] When the wastewater concentration in the raw slurry tank 10 is high and the wastewater level is also high, the wastewater with a higher concentration in the raw slurry tank 10 is first settled by hydrocyclone 21 to obtain wastewater with a lower concentration, and then transported to the mixing tank 30 to adjust the wastewater in the mixing tank 30.

[0054] In some embodiments, the thickening tank 20 is equipped with a second water pump 23, and the thickening tank 20 is selectively connected to the mixing tank 30 via the second water pump 23. Specifically, when the wastewater monitoring device 31 detects that the wastewater concentration in the mixing tank 30 is lower than a set standard concentration, the second water pump 23 transports the wastewater from the thickening tank 20 to the mixing tank 30. For example, the second water pump 23 is connected to the mixing tank 30 via a sixth pipeline L6, and a solenoid valve is installed on the sixth pipeline L6. When the wastewater monitoring device 31 detects that the wastewater concentration in the mixing tank 30 is lower than the set standard concentration, the solenoid valve on the sixth pipeline L6 is opened, and the wastewater from the thickening tank 20 is transported to the mixing tank 30 via the second water pump 23, thereby utilizing the high-concentration wastewater in the thickening tank 20 and achieving zero wastewater discharge.

[0055] In some embodiments, the slurry tank 20 is equipped with a second water pump 23, and the slurry tank is also selectively connected to a wastewater monitoring device 31 via the second water pump 23. The wastewater monitoring device is also used to detect the wastewater concentration in the slurry tank 20. For example, the second water pump 23 is connected to the wastewater monitoring device 31 via a seventh pipe L7, and a solenoid valve is installed on the seventh pipe L7. The second water pump 23 is selectively connected to the inlet of the hydrocyclone 21. For example, the second water pump 23 is connected to the inlet of the hydrocyclone 21 via an eighth pipe, and a solenoid valve is installed on the eighth pipe. When the wastewater concentration in the thickening tank 20 is lower than the second set concentration, the second water pump 23 is connected to the inlet of the hydrocyclone 21 (e.g., by opening the solenoid valve on the eighth pipeline), and the overflow port of the hydrocyclone 21 is connected to the mixing tank 30 and / or the raw slurry tank 10. The wastewater in the thickening tank 20 is transported to the hydrocyclone 21 by the second water pump 23, so that the low-concentration wastewater discharged from the thickening tank 20 through the overflow port of the hydrocyclone 21 is transported to the mixing tank 30 and / or the raw slurry tank 10, while the high-concentration wastewater from the thickening tank 20, which settles through the hydrocyclone 21, remains in the thickening tank 20. When the wastewater concentration in the thickening tank 20 is high, it is reduced by the hydrocyclone 21 before entering the mixing tank 30 and / or the raw slurry tank 10 to adjust the wastewater concentration in the mixing tank 30 and / or the raw slurry tank 10.

[0056] In some embodiments, the thickening tank 20 is equipped with a second water pump 23, which is selectively connected to the inlet of the hydrocyclone 21. A second liquid level detection device is installed in the thickening tank 20 to detect the wastewater level within the tank. This second liquid level detection device can be, for example, a liquid level sensor. When the wastewater level in the thickening tank 20 is higher than a second set liquid level, the inlet of the hydrocyclone 21 is connected to the second water pump 23, and the overflow port of the hydrocyclone 21 is connected to the mixing tank 30, so that the low-concentration wastewater discharged from the overflow port of the hydrocyclone 21 from the thickening tank 20 is transported to the mixing tank 30. And / or, when the sewage level in the thickening tank 20 is higher than the second set level and the sewage level in the raw slurry tank 10 is lower than the first set level, the inlet of the hydrocyclone 21 is connected to the second water pump 23 and the overflow port of the hydrocyclone 21 is connected to the raw slurry tank 10, so that the low-concentration sewage discharged from the overflow port of the hydrocyclone 21 from the thickening tank 20 is transported to the raw slurry tank 10.

[0057] In some embodiments, the mixing tank 30 is equipped with a third water pump 32, which is selectively connected to the inlet of the hydrocyclone 21. For example, the third water pump 32 is connected to the inlet of the hydrocyclone 21 via a ninth pipeline L9, on which a solenoid valve is installed. When the concentration in the mixing tank 30 is higher than a preset standard concentration, the third water pump 32 is connected to the inlet of the hydrocyclone 21 (e.g., the solenoid valve on the ninth pipeline L9 is opened), and the overflow port of the hydrocyclone 21 is connected to the raw slurry tank 10 and / or the mixing tank 30, so that low-concentration wastewater discharged from the overflow port of the hydrocyclone 21 from the mixing tank 30 is transported to the raw slurry tank 10 and / or the mixing tank 30.

[0058] In some embodiments, a cleaning pipeline can be introduced into the mixing tank 30 and / or the wastewater monitoring device 31 to clean the mixing tank 30 and / or the wastewater monitoring device 31 with clean water.

[0059] In some embodiments, the specific structure of the wastewater detection device 31 in the above embodiments and its cooperation with each wastewater tank are as follows:

[0060] like Figure 5 and Figure 6 As shown, the wastewater monitoring device includes: a flow stabilizing container 310 and a weighing scale.

[0061] The flow stabilizing container 310 is provided with a first inlet 311, a flow stabilizing port 312, and a first overflow port 313. The first inlet 311, flow stabilizing port 312, and first overflow port 313 are all connected to the cavity of the flow stabilizing container 310. The first inlet 311 is connected to the mixing tank 30, and wastewater in the mixing tank 30 enters the flow stabilizing container 310 through the first inlet 311. The flow stabilizing port 312 is located below the first overflow port 313 and is used to allow wastewater in the flow stabilizing container 310 to flow out. The first overflow port 313 is used to overflow wastewater when the wastewater level in the flow stabilizing container 310 rises to the position of the first overflow port 313, so that the wastewater in the flow stabilizing container 310 is in an overflow state. Specifically, the flow rate of wastewater entering the stabilizing container 310 from the first inlet 311 in the mixing tank 30 is greater than the flow rate of wastewater flowing out from the stabilizing port 312. This allows the wastewater level in the stabilizing container 310 to rise to or exceed the first overflow port 313, so that it can overflow from the first overflow port 13. The processes of wastewater entering from the first inlet 311, overflowing from the first overflow port 313, and flowing out from the stabilizing port 312 occur simultaneously (in real time), so that the wastewater in the stabilizing container 310 is always in an overflow state. As a result, when the wastewater in the stabilizing container 310 is in an overflow state, the wastewater flows out from the stabilizing port 312 at a constant flow rate due to its own gravity. That is, the flow rate of the wastewater flowing out from the stabilizing port 312 is almost stable and does not fluctuate.

[0062] The weighing scale is used to measure the weight of the weighing container 320 and the wastewater within it, such as wastewater from the mixing tank 30. The weighing container 320 is provided with a second inlet 321, an outlet 322, and a second overflow outlet 323, all of which communicate with the cavity of the weighing container 320. The outlet 322 is located below the second inlet 321 and the second overflow outlet 323. The second inlet 321 is located below the stabilizing inlet 312 and is used to collect wastewater flowing out of the stabilizing inlet 312. The outlet 322 is used to discharge wastewater from the weighing container 320. The second overflow outlet 323 is used to overflow wastewater when the wastewater level in the weighing container 320 reaches the position of the second overflow outlet 323. The flow rate of wastewater flowing out of the stabilizing inlet 312 is greater than the flow rate of wastewater flowing out of the outlet 322, so that the wastewater in the weighing container 320 is in an overflow state.

[0063] Specifically, the sewage flowing out of the constant flow port 312 at a constant flow rate enters the weighing container 320 through the second inlet 321. Since the sewage flow rate from the constant flow port 312 is greater than the sewage flow rate from the outlet 322, the sewage level in the weighing container 320 can rise to the second overflow port 323 so that it can overflow from the first overflow port 313. The process of sewage entering the weighing container 320 from the second inlet 321, overflowing from the second overflow port 323, and flowing out from the outlet 322 is carried out simultaneously (in real time), so that the sewage in the weighing container 320 can always be in an overflow state. Furthermore, since the sewage flowing out of the constant flow port 312 flows out at a constant flow rate, that is, the sewage flow rate entering the weighing container 320 from the second inlet 321 is constant and uniform, the sewage level in the weighing container 320 can always remain stable. The sewage level in the overflow state in the weighing container 320 hardly changes, so the volume of sewage in the weighing container 320 remains almost unchanged. As a result, the measured weight of sewage in the weighing container 320 is more accurate, and the calculated sewage concentration, for example, in the mixing tank 30, is more precise.

[0064] The above-mentioned method for calculating wastewater concentration can be as follows: First, the weight of the weighing container 320 containing clean water is checked by passing clean water through the wastewater monitoring device. Then, the wastewater to be tested is passed through the wastewater monitoring device, and the weight of the weighing container 320 containing wastewater is measured using the same method. The difference between the two weights gives the wastewater concentration, which can be the solids content of the wastewater. Specifically, first, the weighing container 320 in the wastewater monitoring device is filled with clean water to obtain the initial weight. Then, the wastewater to be tested is passed through the wastewater monitoring device. The program is set to start calculating the concentration (density) after the initial weight is reached, thereby reducing meaningless data and improving efficiency. Alternatively, the above-mentioned method for calculating wastewater concentration can be as follows: directly measure the weight of the wastewater in the weighing container 320 in the wastewater monitoring device to obtain the wastewater concentration (density). Since the volume of the weighing container 320 is constant, the ratio of the weight (mass) of the wastewater in the weighing container 320 to the volume of the weighing container 320 gives the wastewater concentration (density).

[0065] Wastewater testing devices can be connected to a digital display to directly show concentration values, or concentration values ​​can be calculated by directly measuring the weight.

[0066] Specifically, the inventors discovered that in the wastewater monitoring devices of the relevant technology, if the flow rate of wastewater into the weighing container 320 is uneven, sometimes fast and sometimes slow, even if the wastewater in the weighing container 320 is overflowing, the wastewater level in the weighing container 320 will change, preventing the wastewater level from remaining constant. In other words, the volume of wastewater in the weighing container 320 is variable, leading to inaccurate measurements. This is especially problematic in scenarios involving the measurement of concrete slurry weight, where the weighing container 320 has a large capacity, weighing up to tens of tons when fully loaded. Even small changes in the liquid level within the weighing container 320 can cause significant changes in the weight of the weighing container 20, resulting in inaccurate wastewater concentration measurements. Specifically, when the flow rate of sewage into the weighing container 20 is uneven, i.e., sometimes fast and sometimes slow, even if the sewage in the weighing container 320 is in an overflowing state, due to the surface tension of the sewage, when the flow rate of sewage into the weighing container 320 is faster, the second overflow port 323 on the weighing container 320 cannot overflow in time, and the liquid level may even exceed the second overflow port 323, causing the sewage level in the weighing container 320 to rise, resulting in changes in the sewage level and inaccurate measurement. Similarly, when the flow rate of sewage into the weighing container 320 is slower, the sewage level in the weighing container 320 will drop compared to when the flow rate is faster, also causing changes in the sewage level and inaccurate measurement.

[0067] In summary, the inventors discovered that the stability of the sewage flow velocity into the weighing container 320 has a significant impact on the accuracy of the measurement results. This invention utilizes a flow-stabilizing container 310 that is continuously overflowing, ensuring a constant sewage flow velocity from the flow-stabilizing port 312 of the flow-stabilizing container 310. This constant flow velocity of sewage into the weighing container 320, which is also continuously overflowing, keeps the sewage level in the weighing container 320 almost constant, resulting in a nearly constant sewage volume. This allows for real-time, continuous, and accurate measurement of the weight of the sewage-containing weighing container 320, leading to more precise calculations of the sewage concentration.

[0068] In one example, such as Figure 5 and Figure 6In one example, the cross-sectional area of ​​the stabilizing port 312 of the stabilizing container 310 is larger than the cross-sectional area of ​​the outlet 322 of the weighing container 320, so that the sewage flow rate from the stabilizing port 312 is greater than the sewage flow rate from the outlet 322, thereby ensuring that the sewage in the weighing container 320 is always in an overflow state and the sewage level remains stable. In another example, the sewage flow velocity at the stabilizing port 312 of the stabilizing container 310 is greater than the sewage flow velocity at the outlet 322, so that the sewage flow rate from the stabilizing port 312 is greater than the sewage flow rate from the outlet 322, thereby ensuring that the sewage in the weighing container 320 is always in an overflow state and the sewage level remains stable. In another example, the cross-sectional area of ​​the stabilizing port 312 of the stabilizing container 310 is larger than the cross-sectional area of ​​the outlet 322 of the weighing container 320, and the sewage flow velocity at the stabilizing port 312 of the stabilizing container 310 is greater than the sewage flow velocity at the outlet 322. This ensures that the sewage flow rate from the stabilizing port 312 is greater than the sewage flow rate from the outlet 322, thereby keeping the sewage in the weighing container 320 in an overflow state and maintaining a stable sewage level. Regardless of the method used, the sewage flow rate from the stabilizing port 312 is greater than the sewage flow rate from the outlet 322, ensuring that the sewage in the weighing container 320 is always in an overflow state and that the sewage level remains stable. This allows for continuous and accurate measurement of the sewage. For example, the flow rate at the stabilizing port 312 can be roughly calculated based on its cross-section, or a high-flow-rate water pump can be used to ensure that the sewage in the stabilizing container is in an overflow state. Alternatively, the cross-sectional size of the outlet 322 can be set according to the cross-sectional size of the flow stabilizer 312, making the cross-sectional size of the outlet 322 slightly smaller than that of the flow stabilizer 312. Using this method ensures a large inflow and a small outflow. Alternatively, valves can be installed at each outlet, and the water flow can be controlled by adjusting the valve size.

[0069] In some embodiments, the second inlet 321 of the weighing container 320 may be located at the top of the weighing container 320, the outlet 322 may be located at the bottom of the weighing container 320, and the second overflow port 323 may be located on the side wall of the weighing container 320. The second overflow port 323 is connected to a second overflow pipe 324, and the sewage overflowing from the second overflow port 323 flows out through the second overflow pipe 324. For example, the weighing container 320 may be generally cylindrical and have an opening forming the second inlet 321 of the weighing container 320 for receiving sewage flowing out from the flow stabilizing port 312 of the flow stabilizer 310. The cylindrical weighing container 320 has a conical structure at its bottom, with an outlet 322 at the bottom. The outlet 322 can be open. The conical structure facilitates the smooth guidance of solid matter (adhesives) in the wastewater to the outlet 322, preventing sedimentation and improving the accuracy of wastewater measurement. Two opposing second overflow ports 323 can be formed on the side wall of the cylindrical weighing container 320, each connected to a second overflow pipe 324. The shape of the second overflow port 323 can be rectangular, circular, or other shapes. A rectangular second overflow port 323 is easier to clean than a circular overflow port, and the lower edge of the rectangular overflow port has a larger contact area with the liquid surface than the lower edge of a circular overflow port, resulting in a more significant overflow effect.

[0070] The inventors discovered that wastewater sedimentation within the weighing container 320 can affect wastewater concentration monitoring, leading to inaccurate measurements. In this embodiment of the wastewater monitoring device, a second inlet 321 and an outlet 322 are located at the top and bottom of the weighing container 320, respectively, i.e., the inlet 321 and outlet 322 are vertically distributed. By adjusting the size of the outlet 322, most of the wastewater in the weighing container 320 flows out through the outlet 322, while a small portion flows out through the second overflow outlet 323. This minimizes or avoids the sedimentation of fixed substances in the wastewater, ensuring that the wastewater in the weighing container 320 maintains a uniform concentration (density). This results in a more accurate calculated wastewater concentration. Simultaneously, the flowing wastewater in the weighing container 320 also reduces sedimentation, leading to a more uniform wastewater concentration.

[0071] The inventors also discovered that solid substances adhering to the inner and outer walls of the weighing container 320 can also affect wastewater concentration monitoring, leading to inaccurate measurements. The wastewater monitoring device of this embodiment connects the second overflow port 323 to a second overflow pipe 324, allowing the wastewater overflowing from the second overflow port 323 to flow out through the second overflow pipe 324, thus preventing wastewater from overflowing onto the outer wall of the weighing container 320 and adhering to it, thereby affecting measurement accuracy.

[0072] In one example, the inner wall of the weighing container 320 is smooth, for example, made of stainless steel, to minimize or prevent solid matter in the wastewater from adhering to the inner wall. In another example, the inner wall of the weighing container 320 may be provided with a smooth plastic plate, which similarly minimizes or prevents solid matter in the wastewater from adhering to the inner wall. In yet another example, an anti-stick coating may also be applied to the inner wall of the weighing container 320.

[0073] To reduce the influence of fixed substances adhering to or depositing on the weighing container 320 during measurement, in addition to the various methods mentioned above, a vibration device can be installed on the weighing container 320. This vibration device is used to detach the solid substances adhering to the surface of the weighing container 320. In a cylindrical weighing container 320, the effect of detaching solid substances from the surface of the weighing container 320 through vibration is even more pronounced.

[0074] In another example, a cleaning device, such as a spray device, can be added to the second inlet 321 of the weighing container 320 to rinse the inner wall of the weighing container 320. For example, an annular cleaning pipe 352 can be fixedly installed on the bottom outer peripheral wall of the flow stabilizing container 310, and the spray nozzles on the annular cleaning pipe 352 can be used to rinse the inner peripheral wall of the weighing container 320 to prevent solid substances from adhering and affecting the weighing accuracy of the weighing container 320. A spray nozzle 350 can also be installed at the inlet of the flow stabilizing container 310 to rinse the flow stabilizing container 310. Furthermore, the spray device and the annular cleaning pipe 352 are connected through the same clean water pipe 351, which can rinse the weighing container 320 and the flow stabilizing container 310 simultaneously, improving rinsing efficiency.

[0075] In some embodiments, the flow stabilizing port 312 of the flow stabilizing container 310 is located at the bottom of the flow stabilizing container 310, and the first inlet 311 and the first overflow port 313 are located on the side wall of the flow stabilizing container 310. The first overflow port 313 is connected to a first overflow pipe 314, and the sewage flowing out from the first overflow port 313 flows out through the first overflow pipe 314. Specifically, the flow stabilizing container 310 can be located above the weighing container 320, for example, both the flow stabilizing container 310 and the weighing container 320 are supported by a bracket. The flow stabilizing container 310 can also be cylindrical, and the bottom can also be a conical structure to avoid the deposition of fixed substances in the sewage. The top of the cylindrical flow stabilizing container 10 can be an open structure, and the first inlet 311 is located on the side wall of the flow stabilizing container 10 to avoid the open top of the flow stabilizing container 10, so as to facilitate the installation of a cleaning device, such as a spray device.

[0076] The flow stabilizing port 312 of the flow stabilizing container 310 can be located in the middle above the top opening (second inlet 321) of the weighing container 320, corresponding to the outlet 322 of the weighing container 320. During the cleaning process of the flow stabilizing container 310 by the cleaning device at the top of the flow stabilizing container 10, the cleaning water discharged from the flow stabilizing port 312 of the flow stabilizing container 310 is used to clean the weighing container 320.

[0077] In some embodiments, the weighing scale can weigh the weighing container 320 and the wastewater inside it via a weight monitor 325. In one example, the weighing container 320 is suspended from a support by the weight monitor 325, and the weighing measurement is achieved by suspending the weighing container 320.

[0078] In another example, a weight monitor 325 is positioned between the support and the weighing container 320, and the weighing measurement is achieved by supporting the weighing container 320 with the weight monitor 325. Specifically, three evenly distributed support blocks can be provided on the outer peripheral wall of the weighing container 320, and a weight monitor 325 can be placed between the support and each support block. Compared with the suspension method, the method of supporting the weighing container 320 with three evenly distributed weight monitors 325 provides more stable support and more accurate weighing measurement.

[0079] The weighing method of the weighing container 320 and the sewage inside is not limited to the above-mentioned method. It can also be measured by supporting the bottom of the weighing container 320, or other possible methods.

[0080] In some embodiments, the first overflow pipe 314, which is connected to the first overflow port 313 of the flow stabilizing container 310, and the second overflow pipe 324, which is connected to the second overflow port 323 of the weighing container 320, are both connected to the mixing tank 30. The first inlet 311 of the flow stabilizing container 310 is connected to the mixing tank 30 through the inlet pipe 315. A third water pump 32 connected to the inlet pipe 315 is provided in the mixing tank 30 for pumping the sewage in the mixing tank 30 to the flow stabilizing container 310.

[0081] Specifically, the third water pump 32 continuously pumps the sewage in the mixing tank 30 to the flow stabilizing container 310 through the inlet pipe 315. The sewage flows in from the first inlet 311 and flows out through the flow stabilizing port 312. Since the sewage flow rate into the flow stabilizing container 310 through the first inlet 311 is greater than the sewage flow rate out of the flow stabilizing port 312, the sewage level in the flow stabilizing container 310 can reach the first overflow port 313 and overflow. The overflowed sewage flows back to the mixing tank 30 through the first overflow pipe 314. At this time, the sewage in the flow stabilizing container 310 can be in an overflow state, so that the sewage flowing out of the flow stabilizing port 312 can be kept at a constant flow rate in real time. Next, the wastewater flowing out of the constant flow port 312 at a constant flow rate enters the weighing container 320 through the second inlet 21 and flows out of the outlet 322 of the weighing container 320. Since the flow rate of the wastewater flowing out of the constant flow port 312 is greater than the flow rate of the wastewater flowing out of the outlet 322 of the weighing container 320, the wastewater level in the weighing container 320 can reach the second overflow port 323 and overflow. The overflowing wastewater flows back to the mixing tank 30 through the second overflow pipe 324. At this time, the wastewater in the weighing container 320 can continue to be in an overflow state. Since the wastewater flowing out of the constant flow port 312 flows into the weighing container 320 at a constant flow rate, the wastewater level in the weighing container 320 is almost stable and does not fluctuate. Therefore, the wastewater volume in the weighing container 320 can continue to maintain a constant value. The weight of the weighing container 320 and the wastewater in it under the overflow state is more accurate, and the wastewater concentration is calculated more precisely. Therefore, through the above-described scheme, the wastewater monitoring device of the present invention can accurately measure the wastewater in the mixing tank 30 continuously and without interruption. Furthermore, most of the wastewater flowing into the weighing container 320 from the top second inlet flows out from the bottom outlet 322, with a small amount overflowing from the second overflow outlet 323. The flowing wastewater hardly settles in the weighing container 320, resulting in a more uniform wastewater concentration (density) and further improving measurement accuracy. In addition, to further avoid the influence of solid matter adhering to the inner and outer walls of the weighing container 320 on the accuracy of wastewater concentration measurement, the weighing container 320 employs various methods such as using stainless steel plates, adding smooth plastic plates, or coating the inner wall with an anti-stick layer to minimize the impact of adhering substances on the inner wall of the weighing container 320 on measurement accuracy. Furthermore, by connecting the second overflow outlet 323 to the second overflow pipe 324, the overflowing wastewater is guided to the mixing tank 30 to eliminate the influence of adhering substances on the outer wall of the weighing container 320 on measurement accuracy.

[0082] Furthermore, the flow stabilizing port 312 at the bottom of the flow stabilizing container 310 can extend into the weighing container 320 and is located below the second overflow port 323. In this way, when the weighing container 320 is in an overflow state, the flow stabilizing port 312 is located below the sewage surface, thereby reducing the impact of the sewage flowing out of the flow stabilizing port 312 on the sewage surface in the weighing container 20, ensuring a constant sewage surface, and improving the accuracy of sewage concentration measurement.

[0083] The mixing tank 30 is connected to the clean water supply pipe 41, which is used to replenish clean water into the mixing tank 30 when the water volume in the mixing tank 30 is insufficient.

[0084] In summary, this invention can accurately monitor the wastewater concentration in the mixing tank 30 in real time using a wastewater monitoring device. It can also utilize the wastewater monitoring device 31 to monitor the wastewater concentration in the raw slurry tank 10 and the thickening tank 20, enabling rapid mixing based on the wastewater concentration values ​​in each tank. Furthermore, a separation device (such as a hydrocyclone 21) can separate the wastewater in the raw slurry tank 10, the thickening tank 20, and the mixing tank 30 into low-concentration and high-concentration wastewater. The high-concentration wastewater remains in the thickening tank 20, while the low-concentration wastewater is transported as needed, for example, to the raw slurry tank 10 or the mixing tank 30. That is, the hydrocyclone 21 can be used to dilute and mix the wastewater within the raw slurry tank 10 and the wastewater within the mixing tank 30. Combined with precise measurement by the wastewater monitoring device 31, the desired wastewater concentration can be achieved.

[0085] A stirring device can be installed in the above-mentioned raw slurry tank 10, thick slurry tank 20, mixing tank 30 and finished product tank 40 to mix and stir at the same time, so that the measured wastewater concentration is more accurate.

[0086] The present invention also provides a wastewater mixing method, applicable to the wastewater mixing apparatus of any of the above embodiments, such as... Figure 3 and Figure 4 As shown, the method includes steps S11 and S12.

[0087] In step S11, the concentration of wastewater in the raw slurry tank 10 is detected;

[0088] In step S12, if the concentration of wastewater in the raw slurry tank is lower than the first set concentration, the wastewater in the raw slurry tank is transported to the blending tank by the first water pump in the raw slurry tank.

[0089] When in use, the sewage in the raw slurry tank 10 can be detected by the sewage monitoring device 31. If the sewage concentration in the raw slurry tank 10 is lower than the first set concentration, it means that it can be used directly. At this time, the sewage in the raw slurry tank 10 can be directly transported to the mixing tank by the first water pump 11.

[0090] The method also includes: real-time monitoring of the wastewater concentration in the mixing tank 30.

[0091] The wastewater mixing method of the present invention uses a first water pump to transport wastewater from the raw slurry tank to the mixing tank, and uses a wastewater monitoring device to detect the wastewater concentration in the mixing tank in real time. The mixing is carried out while monitoring, which greatly improves efficiency compared with the mixing method of one tank at a time in related technologies.

[0092] In some embodiments, if the wastewater concentration in the raw pulp tank is lower than the first set concentration, the wastewater in the raw pulp tank 10 can be used to flush the tanker truck, thereby increasing the wastewater concentration in the raw pulp tank 10. This reduces the use of clean water when flushing the tanker truck.

[0093] In some embodiments, the method further includes step S13.

[0094] In step S13, if the wastewater concentration in the raw slurry tank is higher than the first set concentration, the first water pump is connected to the hydrocyclone inlet, and the hydrocyclone overflow outlet is connected to the raw slurry tank and / or the thickening tank. The wastewater in the raw slurry tank is transported to the hydrocyclone by the first water pump, so that the low-concentration wastewater discharged from the raw slurry tank through the hydrocyclone overflow outlet is transported to the raw slurry tank and / or the blending tank, and the high-concentration wastewater settled by the hydrocyclone from the raw slurry tank remains in the thickening tank.

[0095] If the wastewater concentration in the raw slurry tank is high, it needs to be reduced. This can be achieved through physical sedimentation using a hydrocyclone to convert the high-concentration wastewater from the raw slurry tank into low-concentration wastewater, which can then be returned to the raw slurry tank for further processing. Alternatively, the high-concentration wastewater from the raw slurry tank can be converted into low-concentration wastewater and then transported to a mixing tank for further processing.

[0096] In some embodiments, the method further includes: when the wastewater concentration in the raw slurry tank 10 is equal to or higher than a set value, the tanker truck can be washed with clean water to reduce the wastewater concentration in the raw slurry tank 10. The wastewater in the raw slurry tank then enters the blending tank for further blending. The wastewater is brought to near the set value before entering the blending tank, thus accelerating the wastewater blending speed.

[0097] In some embodiments, step S13 includes:

[0098] The wastewater level in the mixing tank is detected by a third liquid level detection device in the mixing tank.

[0099] If the wastewater concentration in the raw slurry tank is higher than the first set concentration, and the wastewater level in the mixing tank is higher than the third set level, then the inlet of the hydrocyclone is connected to the first water pump, and the overflow port of the hydrocyclone is connected to the raw slurry tank. The first water pump then transports the wastewater from the raw slurry tank to the hydrocyclone, so that the low-concentration wastewater discharged from the overflow port of the hydrocyclone from the raw slurry tank is transported to the raw slurry tank. In other words, the wastewater concentration in the raw slurry tank 10 is high, and the level in the mixing tank 30 is high. The mixing tank 30 does not need to receive wastewater. Instead, the wastewater is settled by the hydrocyclone 21, and the low-concentration wastewater separated from the high-concentration wastewater in the raw slurry tank is returned to the raw slurry tank 10, thereby adjusting the wastewater in the raw slurry tank 10.

[0100] If the wastewater concentration in the raw slurry tank is higher than the first set concentration, and the wastewater level in the mixing tank is lower than the third set level, then the inlet of the hydrocyclone is connected to the first water pump, and the overflow port of the hydrocyclone is connected to the mixing tank. The first water pump transports the wastewater in the raw slurry tank to the hydrocyclone, so that the low-concentration wastewater discharged from the wastewater in the raw slurry tank through the overflow port of the hydrocyclone is transported to the mixing tank. In other words, the wastewater concentration in the raw slurry tank 10 is high, and the level in the mixing tank 30 is high. The mixing tank 30 does not need to receive wastewater. The hydrocyclone 21 performs sedimentation, allowing the low-concentration wastewater separated from the high-concentration wastewater in the raw slurry tank to return to the raw slurry tank 10, thereby mixing the wastewater in the raw slurry tank 10.

[0101] In some embodiments, the method further includes: detecting the wastewater concentration in the mixing tank; if the wastewater concentration in the mixing tank is lower than a set standard concentration, then the wastewater in the thickening tank is transported to the mixing tank by a second water pump in the thickening tank until the wastewater concentration in the mixing tank reaches the set standard concentration, thereby utilizing the high-concentration wastewater in the thickening tank 20 to achieve zero wastewater discharge.

[0102] In some embodiments, the method further includes: detecting the wastewater level in the thickening tank; if the wastewater level in the thickening tank is higher than a second set level, then connecting the inlet of the hydrocyclone to the second water pump and the overflow port of the hydrocyclone to the mixing tank, so that low-concentration wastewater discharged from the wastewater in the thickening tank via the overflow port of the hydrocyclone is transported to the mixing tank; and / or, detecting the wastewater level in the raw slurry tank; if the wastewater level in the thickening tank is higher than a second set level and the wastewater level in the raw slurry tank is lower than a first set level, then connecting the inlet of the hydrocyclone to the second water pump and the overflow port of the hydrocyclone to the raw slurry tank, so that low-concentration wastewater discharged from the wastewater in the thickening tank via the overflow port of the hydrocyclone is transported to the raw slurry tank.

[0103] In some embodiments, the method further includes: detecting the concentration of wastewater in the mixing tank; if the concentration in the mixing tank is higher than a preset standard concentration, then connecting a third water pump in the mixing tank to the inlet of the hydrocyclone, and connecting the overflow port of the hydrocyclone to the raw slurry tank and / or the mixing tank, so that the low-concentration wastewater discharged from the mixing tank via the overflow port of the hydrocyclone is transported to the raw slurry tank and / or the mixing tank.

[0104] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0105] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0106] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0107] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0108] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A sewage conditioning apparatus, characterised in that, include: puree pool; Mixing tank; Concentrated slurry tank; A wastewater monitoring device, connected to the mixing tank, is used to detect the wastewater concentration in the mixing tank in real time; A separation device is located above the slurry tank, the inlet of the separation device is selectively connected to the raw slurry tank, the first outlet of the separation device is selectively connected to the raw slurry tank; and / or the first outlet of the separation device is selectively connected to the blending tank. When the wastewater concentration in the raw slurry tank is lower than a first set concentration, the wastewater in the raw slurry tank is transported to the blending tank. The raw slurry tank is selectively connected to the wastewater monitoring device, which is also used to detect the wastewater concentration in the raw slurry tank. When the wastewater concentration in the raw slurry tank is higher than or equal to the first set concentration, the inlet of the separation device is connected to the raw slurry tank, and the first outlet of the separation device is connected to the raw slurry tank and / or the blending tank. Wastewater from the raw slurry tank is transported to the separation device, so that low-concentration wastewater from the raw slurry tank discharged through the first outlet of the separation device is transported to the raw slurry tank and / or the blending tank, and high-concentration wastewater from the raw slurry tank separated by the separation device is discharged from the separation device. The second outlet of the device flows into the thickening tank, which is also selectively connected to the wastewater monitoring device, which is also used to detect the wastewater concentration in the thickening tank. The thickening tank is selectively connected to the inlet of the separation device. When the wastewater concentration in the thickening tank is lower than a second set concentration, the thickening tank is connected to the inlet of the separation device. The first outlet of the separation device is connected to the mixing tank and / or the raw slurry tank. The wastewater in the thickening tank is transported to the separation device so that the low-concentration wastewater from the thickening tank is transported to the mixing tank and / or the raw slurry tank via the first outlet of the separation device, and the high-concentration wastewater from the thickening tank is separated by the separation device and flows from the second outlet of the separation device to the thickening tank.

2. The wastewater mixing device according to claim 1, characterized in that, The mixing tank is equipped with a third liquid level detection device for detecting the sewage liquid level in the mixing tank; When the wastewater concentration in the raw slurry tank is higher than or equal to the first set concentration, and the wastewater level in the mixing tank is higher than the third set level, the inlet of the separation device is connected to the first water pump in the raw slurry tank, and the first outlet of the separation device is connected to the raw slurry tank. The wastewater in the raw slurry tank is transported to the separation device by the first water pump, so that the low-concentration wastewater discharged from the wastewater in the raw slurry tank through the first outlet of the separation device is transported to the raw slurry tank. When the wastewater concentration in the raw slurry tank is higher than or equal to the first set concentration, and the wastewater level in the mixing tank is lower than the third set level, the inlet of the separation device is connected to the first water pump in the raw slurry tank, and the first outlet of the separation device is connected to the mixing tank. The wastewater in the raw slurry tank is transported to the separation device by the first water pump, so that the low-concentration wastewater discharged from the wastewater in the raw slurry tank through the first outlet of the separation device is transported to the mixing tank.

3. The wastewater mixing device according to claim 1, characterized in that, The thickening tank and the blending tank can be selectively connected; When the wastewater monitoring device detects that the wastewater concentration in the mixing tank is lower than the set standard concentration, the wastewater in the thickening tank is transported to the mixing tank.

4. The wastewater mixing device according to claim 1, characterized in that, The mixing tank and the inlet of the separation device can be selectively connected; When the concentration in the mixing tank is higher than the preset standard concentration, the mixing tank is connected to the inlet of the separation device, and the first outlet of the separation device is connected to the raw slurry tank and / or the mixing tank, so that the low-concentration wastewater discharged from the mixing tank through the first outlet of the separation device is transported to the raw slurry tank and / or the mixing tank.

5. The wastewater mixing device according to any one of claims 1-3, characterized in that, Also includes: A settling container, the settling container being provided with a top inlet, a bottom outlet, and a discharge port located between the top inlet and the bottom outlet; The first outlet of the separation device is connected to the top inlet, the bottom outlet is connected to the thickening tank, and the discharge outlet is connected to the raw slurry tank and / or the blending tank.

6. A wastewater preparation method, characterized in that, The method, applied to the wastewater mixing apparatus as described in any one of claims 1-5, comprises: The concentration of wastewater in the raw slurry tank was measured; If the concentration of wastewater in the raw slurry tank is lower than the first set concentration, the wastewater in the raw slurry tank is transported to the mixing tank. If the wastewater concentration in the raw slurry tank is higher than the first set concentration, the raw slurry tank is connected to the inlet of the separation device, and the first outlet of the separation device is connected to the raw slurry tank and / or the thick slurry tank. The wastewater in the raw slurry tank is transported to the separation device, so that the low-concentration wastewater discharged from the wastewater in the raw slurry tank through the first outlet of the separation device is transported to the raw slurry tank and / or the blending tank, and the high-concentration wastewater separated by the separation device from the wastewater in the raw slurry tank flows from the second outlet of the separation device to the thick slurry tank.

7. The wastewater preparation method according to claim 6, characterized in that, The method further includes: The concentration of wastewater in the mixing tank was detected; If the wastewater concentration in the mixing tank is lower than the set standard concentration, the wastewater in the thickening tank is transported to the mixing tank until the wastewater concentration in the mixing tank reaches the set standard concentration.

8. The wastewater preparation method according to claim 6, characterized in that, The method further includes: The concentration of wastewater in the mixing tank was detected; If the concentration in the mixing tank is higher than the preset standard concentration, the mixing tank is connected to the inlet of the separation device, and the first outlet of the separation device is connected to the raw slurry tank and / or the mixing tank, so that the low-concentration wastewater discharged from the mixing tank through the first outlet of the separation device is transported to the raw slurry tank and / or the mixing tank.

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