Control device for wastewater treatment system and wastewater treatment system

Abstract

The utility model provides a control device for a wastewater treatment system and the wastewater treatment system, the wastewater treatment system comprises a liquid transmission device and a gas transmission device, the liquid transmission device comprises a liquid transmission pipeline, and the gas transmission device is connected with the liquid transmission device; the control device comprises a first detection circuit coupled with the liquid transmission pipeline and configured to emit a detection signal into the liquid transmission pipeline and output first detection information based on the detection signal, and the first detection information is suitable for representing the content of the sediment in the liquid transmission pipeline; the second detection circuit is coupled with the liquid transmission pipeline and is configured to detect the water outlet flow of the liquid transmission pipeline and output second detection information; and the control circuit is respectively coupled with the first detection circuit and the second detection circuit, and is configured to output a control signal to control the gas transmission device to perform aeration on the liquid transmission pipeline based on the first detection information and / or the second detection information.

Description

Technical Field

[0001] This disclosure relates to the field of wastewater treatment technology, and in particular to a control device and a wastewater treatment system for a wastewater treatment system. Background Technology

[0002] The treatment of grinding wastewater is an important part of the semiconductor manufacturing process.

[0003] However, existing wastewater treatment systems are prone to clogging of liquid transfer devices when treating wastewater, especially fluoride-containing wastewater.

[0004] Therefore, reducing the probability of blockage in the liquid transfer device of a wastewater treatment system has become a challenge. Utility Model Content

[0005] This disclosure provides a control device and a wastewater treatment system for a wastewater treatment system, which can reduce the probability of blockage in the liquid transfer device of the wastewater treatment system.

[0006] In a first aspect, embodiments of this disclosure provide a control device for a wastewater treatment system, the wastewater treatment system including a liquid transfer device and a gas transfer device, the liquid transfer device including a liquid transfer pipeline, and the gas transfer device connected to the liquid transfer pipeline; the control device includes:

[0007] A first detection circuit, coupled to the liquid transport pipeline, is configured to transmit a detection signal into the liquid transport pipeline and output first detection information based on the detection signal, wherein the first detection information is suitable for characterizing the content of deposits inside the liquid transport pipeline.

[0008] The second detection circuit is coupled to the liquid transmission pipeline and configured to detect the outflow rate of the liquid transmission pipeline and output second detection information.

[0009] The control circuit is coupled to the first detection circuit and the second detection circuit respectively, and is configured to output a control signal based on the first detection information and / or the second detection information to control the gas transmission device to aerate the liquid transmission pipeline.

[0010] Optionally, the first detection circuit includes at least one detector, which is arranged at preset intervals along a first direction starting from the inlet end of the liquid transfer pipeline. The first direction is from the inlet end of the liquid transfer pipeline to the outlet end. The detector includes:

[0011] The transmitter is configured to emit an initial detection signal into the liquid delivery pipeline and then obtain a detection signal, wherein the transmission path of the initial detection signal passes through the sediment;

[0012] The receiver is configured to output first detection information based on the detection signal.

[0013] Optionally, the transmitter and the receiver are located on the same side of the liquid transfer pipeline;

[0014] The transmitter is configured to transmit a detection signal along a second direction;

[0015] The receiver is configured to receive the reflected signal of the detection signal reflected back by the deposits inside the liquid transmission pipeline, and to output first detection information based on the reflected signal.

[0016] Optionally, the transmitter and the receiver are disposed on opposite sides within the liquid transmission pipeline along a second direction, which is perpendicular to the liquid transmission pipeline.

[0017] The transmitter is configured to transmit a detection signal along the second direction;

[0018] The receiver is configured to receive a detection signal of sediment passing through the liquid transport pipeline and output first detection information based on the detection signal of sediment passing through the liquid transport pipeline.

[0019] Optionally, the liquid transmission pipeline includes deposits generated from fluoride-containing wastewater; the transmitter and the receiver are disposed on opposite sides of the liquid transmission pipeline along a second direction, which is perpendicular to the liquid transmission pipeline.

[0020] The transmitter is configured to transmit a detection signal along the second direction, wherein the transmittance of the detection signal through the sediment generated by the fluoride-containing wastewater is greater than a first preset threshold; and the intensity of the detection signal is greater than a second preset threshold.

[0021] The receiver is configured to receive a detection signal of sediment passing through the liquid transport pipeline and output first detection information based on the detection signal of sediment passing through the liquid transport pipeline.

[0022] Optionally, the second detection circuit includes a flow meter configured to detect the outflow rate of the liquid transfer device and output second detection information.

[0023] Optionally, the gas transmission device includes:

[0024] Gas storage devices;

[0025] Gas transmission pipelines are coupled to the gas storage device and the liquid transmission pipeline, respectively;

[0026] A first valve, coupled to the gas transmission pipeline, is configured to open or close in response to a control signal output by the control circuit;

[0027] In response to the opening of the first valve, the gas transmission device aerates the liquid transmission pipeline.

[0028] Optionally, the liquid transfer line further includes a second valve, coupled to the liquid transfer line, configured to open or close in response to a control signal output by the control circuit.

[0029] Optionally, in response to the first detection information being first information and / or the second detection information being first information, the control circuit outputs a control signal to control the first valve to open and simultaneously controls the second valve to close.

[0030] Secondly, embodiments of this disclosure provide a wastewater treatment system, comprising:

[0031] Liquid transfer device;

[0032] A gas transfer device, connected to the liquid transfer device;

[0033] The control device for a wastewater treatment system described in any of the above embodiments is coupled to the liquid transfer device and the gas transfer device, and is configured to control the gas transfer device to aerate the liquid transfer device.

[0034] The control device for a wastewater treatment system provided in this disclosure includes a first detection circuit, a second detection circuit, and a control circuit. The first detection circuit is coupled to the liquid transfer device of the wastewater treatment system and can transmit a detection signal into the liquid transfer pipeline of the liquid transfer device, and output first detection information based on the detection signal. The first detection information is suitable for characterizing the content of sediment inside the liquid transfer pipeline. The second detection circuit is coupled to the liquid transfer device and can detect the effluent flow rate of the liquid transfer pipeline, and output second detection information. The control device is coupled to both the first and second detection circuits and can output a control signal based on the first and / or second detection information to control the gas transfer device of the wastewater treatment system to aerate the liquid transfer pipeline. As can be seen, by detecting the content of sediment inside the liquid transfer pipeline and the effluent flow rate of the liquid transfer pipeline, the control device can output a control signal based on the first and second detection information to control the gas transfer device of the wastewater treatment system to aerate the liquid transfer pipeline, thereby dispersing the sediment inside the liquid transfer pipeline and effectively reducing the probability of blockage in the liquid transfer pipeline of the wastewater treatment system. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, 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 embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0036] Figure 1 A structural example diagram of a wastewater treatment system is shown.

[0037] Figure 2 A structural example diagram of a control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is shown.

[0038] Figure 3 An example diagram is shown illustrating the installation location of a control device for a wastewater treatment system, consistent with some embodiments of this disclosure, within the wastewater treatment system.

[0039] Figure 4 An example diagram of the installation location of another control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is shown.

[0040] Figure 5 An example diagram showing the installation location of another control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is provided.

[0041] Figure 6 A structural example diagram of another monitoring device for a wastewater treatment system, consistent with some embodiments of this disclosure, is shown. Detailed Implementation

[0042] As described in the background section, existing wastewater treatment systems are prone to clogging of liquid transfer devices when treating wastewater, especially fluoride-containing wastewater.

[0043] To facilitate understanding, the following example of a wastewater treatment system treating fluoride-containing wastewater will be used to briefly introduce the phenomenon of blockage of the liquid transmission device when the wastewater treatment system is treating fluoride-containing wastewater.

[0044] Figure 1 A structural example diagram of a wastewater treatment system is shown. (Refer to...) Figure 1 The wastewater treatment system may include an equalization tank T1, a first reaction tank T2, a second reaction tank T3, a coagulation tank T4, a flocculation tank T5, a sedimentation tank T6, a clarification tank T7, a neutralization tank T8, and a drainage pipe CH connecting the clarification tank T7 and the neutralization tank T8.

[0045] First, the fluoride-containing wastewater is treated in equalization tank T1. Specifically, the wastewater is pumped into the first reaction tank T2 via a lift pump (not shown) in equalization tank T1. In the first reaction tank T2, the pH of the wastewater is adjusted, and calcium chloride is added for reaction. Next, the wastewater is treated in the second reaction tank T3. Specifically, pH adjustment continues in the second reaction tank T3, and calcium chloride is added for further reaction. Next, the wastewater is treated in coagulation tank T4. Specifically, a coagulant is added for coagulation, for example, polyaluminum chloride (PAC). Next, the wastewater is treated in flocculation tank T5. Specifically, a flocculant is added for flocculation, for example, polyacrylamide (PAM). Next, sludge-water separation occurs in sedimentation tank T6. Finally, the liquid separated in sedimentation tank T6 is discharged into clarification tank T7. Finally, the liquid in clarifier T7 is discharged into neutralizer T8 through drain pipe CH. Because the reaction between fluoride-containing wastewater and calcium chloride produces calcium fluoride, which accumulates in drain pipe CH over time due to the continuous operation of the wastewater treatment system, it can cause blockage of drain pipe CH.

[0046] To address the aforementioned problems, embodiments of this disclosure provide control devices for wastewater treatment systems. These control devices include a first detection circuit, a second detection circuit, and a control circuit. The first detection circuit is coupled to a liquid transfer device of the wastewater treatment system, and can transmit a detection signal into the liquid transfer pipeline of the liquid transfer device, and output first detection information based on the detection signal. The first detection information is suitable for characterizing the content of sediments inside the liquid transfer pipeline. The second detection circuit is coupled to the liquid transfer device, and can detect the effluent flow rate of the liquid transfer pipeline, and output second detection information. The control device is coupled to both the first and second detection circuits, and can output a control signal based on the first detection information and / or the second detection information to control the gas transfer device of the wastewater treatment system to aerate the liquid transfer pipeline. As can be seen from the above, by detecting the content of sediment inside the liquid transmission pipeline and the outflow rate of the liquid transmission pipeline, the control device can output a control signal based on the first detection information and the second detection information to control the gas transmission device of the wastewater treatment system to aerate the liquid transmission pipeline, so as to disperse the sediment inside the liquid transmission pipeline, thereby effectively reducing the probability of blockage in the liquid transmission pipeline of the wastewater treatment system.

[0047] To enable those skilled in the art to better understand and implement the embodiments of this disclosure, the concepts, schemes, principles, and advantages of the embodiments of this disclosure are described in detail below with reference to the accompanying drawings and through specific application examples.

[0048] Figure 2 A structural example diagram of a control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is shown. In some embodiments, the wastewater treatment system may include a liquid transfer device and a gas transfer device, the liquid transfer device including a liquid transfer pipeline. In some embodiments, reference is made to... Figure 2 The control device A may include a first detection circuit A1, a second detection circuit A2, and a control device A0.

[0049] A first detection circuit A1 is coupled to the liquid transport pipeline and configured to transmit a detection signal into the liquid transport pipeline and output first detection information based on the detection signal. The first detection information is suitable for characterizing the content of deposits inside the liquid transport pipeline.

[0050] The second detection circuit A2 is coupled to the liquid transmission pipeline and configured to detect the outflow rate of the liquid transmission pipeline and output second detection information.

[0051] The control circuit A0 is coupled to the first detection circuit A1 and the second detection circuit A2 respectively, and is configured to output a control signal based on the first detection information and / or the second detection information to control the gas transmission device to aerate the liquid transmission pipeline.

[0052] In some embodiments, the control device A0 may include one or more processors.

[0053] Processors may include, but are not limited to, hardware circuits implemented with application-specific integrated circuits (ASICs), programmable logic devices (PLDs), microcontroller units (MCUs), microprocessor units (MPUs), digital signal processors (DSPs), or central processing units (CPUs). For example, hardware circuits implemented with PLDs may include field-programmable gate arrays (FPGAs). When control device A0 includes multiple processors, the types of processors may be the same or different. For example, control device A0 may include MCUs and FPGAs. Control device A0 may include MCUs, FPGAs, and CPUs. Control device A0 may include MCUs, DSPs, and FPGAs. Alternatively, control device A0 may include CPUs and FPGAs, and so on. When control device A0 includes multiple processors, these processors may be configured separately, partially integrated, or fully integrated. For example, control device A0 may be implemented as a system-on-chip (SoC) or an ASIC.

[0054] The control device employing the above embodiments includes a first detection circuit, a second detection circuit, and a control circuit. The first detection circuit is coupled to the liquid transfer device of the wastewater treatment system and can transmit a detection signal into the liquid transfer pipeline of the liquid transfer device, and output first detection information based on the detection signal. The first detection information is suitable for characterizing the content of sediment inside the liquid transfer pipeline. The second detection circuit is coupled to the liquid transfer device and can detect the effluent flow rate of the liquid transfer pipeline, and output second detection information. The control device is coupled to both the first and second detection circuits and can output a control signal based on the first and / or second detection information to control the gas transfer device of the wastewater treatment system to aerate the liquid transfer pipeline. As can be seen, by detecting the content of sediment inside the liquid transfer pipeline and the effluent flow rate of the liquid transfer pipeline, the control device can output a control signal based on the first and second detection information to control the gas transfer device of the wastewater treatment system to aerate the liquid transfer pipeline, thereby dispersing the sediment inside the liquid transfer pipeline and effectively reducing the probability of blockage in the liquid transfer pipeline of the wastewater treatment system.

[0055] Figure 3A diagram illustrating the installation location of a control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is shown. (Refer to...) Figure 3 In some embodiments of this disclosure, the wastewater treatment system may include a clarifier C1 and a neutralizer C2, and a liquid transfer device for discharging liquid from the clarifier C1 into the neutralizer C2. The liquid transfer device includes a liquid transfer pipeline CH, wherein the inlet end (not shown) of the liquid transfer pipeline CH is connected to the clarifier C1, and the outlet end (not shown) of the liquid transfer pipeline CH is connected to the neutralizer C2.

[0056] In some embodiments of this disclosure, reference continues to be made to Figure 3 The first detection circuit may include at least one detector A11, which is arranged at preset intervals along a first direction x from the water inlet of the liquid transmission pipeline CH, pointing from the water inlet to the water outlet of the liquid transmission pipeline CH.

[0057] For example, the first detection circuit may include a detector, which may be located near the inlet of the liquid transfer line CH.

[0058] For example, the first detection circuit may include two detectors, one of which may be located near the inlet of the liquid transfer line CH, and the other may be located near the outlet of the liquid transfer line CH.

[0059] For example, the first detection circuit may include three detectors, which may be evenly spaced along the first direction x within the liquid transfer pipeline CH.

[0060] In some embodiments of this disclosure, reference continues to be made to Figure 3 The detector A11 may include a transmitter A111 and a receiver A112.

[0061] Transmitter A111 is configured to transmit an initial detection signal into the liquid transport pipeline CH and then obtain a detection signal, wherein the transmission path of the initial detection signal passes through the sediment.

[0062] Receiver A112 is configured to output first detection information based on the detection signal.

[0063] In some embodiments of this disclosure, reference continues to be made to Figure 3The transmitter A111 and receiver A112 can be located on the same side within the liquid transport pipeline CH. The transmitter A111 emits an ultrasonic signal as an initial detection signal. When deposits form inside the liquid transport pipeline CH, the signal reflected by the deposits is received by the receiver A112 as the detection signal. As the deposits become thicker, they absorb and scatter more ultrasonic signals, resulting in a weaker intensity of the ultrasonic signal received by the receiver A112 after reflection. In other words, by measuring the intensity of the ultrasonic signal reflected by the deposits, the content of deposits inside the liquid transport pipeline can be characterized; the weaker the ultrasonic signal, the higher the deposit content. When the intensity of the ultrasonic signal received by receiver A112 is less than or equal to the first intensity threshold, receiver A112 can be controlled to output a high level as the first detection information, indicating that the gas transmission device needs to be controlled to aerate the liquid transmission pipeline; when the intensity of the ultrasonic signal received by receiver A112 is greater than the first intensity threshold, receiver A112 can be controlled to output a low level as the first detection information, indicating that the gas transmission device does not need to be controlled to aerate the liquid transmission device.

[0064] In some embodiments of this disclosure, before the wastewater treatment system performs wastewater treatment, the detector A11 can be turned on to perform background detection (i.e., when no sediment appears in the liquid transmission pipeline CH), and the intensity of the ultrasonic signal received by the receiver A112 can be used as a first standard intensity threshold. The first intensity threshold can be set according to the first standard intensity threshold.

[0065] For example, the first intensity threshold can be set to half of the first standard intensity threshold.

[0066] For example, the first intensity threshold can be set to one-third of the first standard intensity threshold.

[0067] In some embodiments of this disclosure, transmitter A111 can emit a visible light signal as an initial detection signal. When sediment is generated inside the liquid transport pipeline CH, the signal reflected by the sediment from the initial detection signal is received by receiver A112 as a detection signal. As the sediment becomes thicker, it absorbs and scatters more visible light signals, resulting in a weaker intensity of the visible light signal reflected by the sediment received by receiver A112. In other words, by obtaining the intensity of the visible light signal reflected by the sediment, the content of sediment inside the liquid transport device can be characterized; the weaker the intensity of the visible light signal, the higher the content of sediment. When the intensity of the visible light signal received by receiver A112 is less than or equal to a second intensity threshold, receiver A112 can be controlled to output a high level as first detection information, indicating that the gas transport device needs to be controlled to aerate the liquid transport device. When the intensity of the ultrasonic signal received by receiver A112 is greater than the second intensity threshold, receiver A112 can be controlled to output a low level as first detection information, indicating that the gas transport device does not need to be controlled to aerate the liquid transport device.

[0068] In some embodiments of this disclosure, before the wastewater treatment system performs wastewater treatment, the detector A11 can be turned on to perform background detection (i.e., when no sediment appears in the liquid transmission pipeline CH), and the intensity of the visible light signal received by the receiver A112 can be used as a second standard intensity threshold. The second intensity threshold can be set according to the second standard intensity threshold.

[0069] For example, the second intensity threshold can be set to half of the second standard intensity threshold.

[0070] For example, the second intensity threshold can be set to one-third of the second standard intensity threshold.

[0071] Figure 4 An example diagram showing the installation location of another control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is provided in the diagram. (Refer to...) Figure 4 In some embodiments of this disclosure, the transmitter A111 and the receiver A112 may be disposed on opposite sides of the liquid transmission pipeline CH along a second direction y, the second direction y being a direction perpendicular to the liquid transmission pipeline CH.

[0072] The transmitter A111 is configured to transmit a detection signal along the second direction y.

[0073] The receiver A112 is configured to receive a detection signal of sediment passing through the interior of the liquid transport pipeline, and to output first detection information based on the detection signal of sediment passing through the interior of the liquid transport pipeline.

[0074] In some embodiments of this disclosure, transmitter A111 can emit an ultrasonic signal as an initial detection signal. When sediment is generated inside the liquid transport pipeline CH, the signal after the initial detection signal penetrates the sediment is received by receiver A112 as a detection signal. As the sediment becomes thicker, it absorbs and scatters more ultrasonic signals, resulting in a weaker and weaker ultrasonic signal received by receiver A112 after penetrating the sediment. In other words, by obtaining the intensity of the ultrasonic signal after penetrating the sediment, the content of sediment inside the liquid transport device can be characterized; the weaker the ultrasonic signal, the higher the sediment content. When the intensity of the ultrasonic signal received by receiver A112 is less than or equal to a third intensity threshold, receiver A112 can be controlled to output a high level as first detection information, indicating that the gas transport device needs to be controlled to aerate the liquid transport device; when the intensity of the ultrasonic signal received by receiver A112 is greater than the third intensity threshold, receiver A112 can be controlled to output a low level as first detection information, indicating that the gas transport device does not need to be controlled to aerate the liquid transport device.

[0075] In some embodiments of this disclosure, before the wastewater treatment system performs wastewater treatment, the detector A11 can be turned on to perform background detection (i.e., when no sediment appears in the liquid transmission pipeline CH), and the intensity of the ultrasonic signal received by the receiver A112 can be used as a third standard intensity threshold. The third intensity threshold can be set according to the third standard intensity threshold.

[0076] For example, the third intensity threshold can be set to half of the third standard intensity threshold.

[0077] For example, the third intensity threshold can be set to one-third of the third standard intensity threshold.

[0078] In some embodiments of this disclosure, transmitter A111 can emit a visible light signal as an initial detection signal. When sediment is generated inside the liquid transport pipeline CH, the signal after the initial detection signal penetrates the sediment is received by receiver A112 as a detection signal. As the sediment becomes thicker, it absorbs and scatters more visible light signals, resulting in a weaker and weaker intensity of the visible light signal received by receiver A112 after penetrating the sediment. In other words, by obtaining the intensity of the visible light signal after penetrating the sediment, the content of sediment inside the liquid transport device can be characterized; the weaker the intensity of the visible light signal, the higher the content of sediment. When the intensity of the visible light signal received by receiver A112 is less than or equal to a fourth intensity threshold, receiver A112 can be controlled to output a high level as first detection information, indicating that it is necessary to control the gas transport device to aerate the liquid transport device; when the intensity of the visible light signal received by receiver A112 is greater than the fourth intensity threshold, receiver A112 can be controlled to output a low level as first detection information, indicating that it is not necessary to control the gas transport device to aerate the liquid transport device.

[0079] In some embodiments of this disclosure, before the wastewater treatment system performs wastewater treatment, the detector A11 can be turned on to perform background detection (i.e., when no sediment appears in the liquid transmission pipeline CH), and the intensity of the visible light signal received by the receiver A112 can be used as a fourth standard intensity threshold. The fourth intensity threshold can be set according to the fourth standard intensity threshold.

[0080] For example, the fourth intensity threshold can be set to half of the fourth standard intensity threshold.

[0081] For example, the fourth intensity threshold can be set to one-third of the fourth standard intensity threshold.

[0082] Figure 5 An example diagram showing the installation location of another control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is provided in the diagram. (Refer to...) Figure 5 In some embodiments of this disclosure, when the liquid transmission pipeline CH is made of transparent plastic, the transmitter A111 and the receiver A112 can be disposed outside the liquid transmission pipeline CH.

[0083] In some embodiments of this disclosure, the liquid transport pipeline contains deposits generated from fluoride-containing wastewater. For example, calcium fluoride is produced by reacting fluoride-containing wastewater with calcium chloride. The transmitter and the receiver may be disposed on opposite sides within the liquid transport pipeline along a second direction perpendicular to the liquid transport pipeline.

[0084] The transmitter is configured to transmit a detection signal along the second direction, wherein the transmittance of the detection signal through the sediment generated by the fluoride-containing wastewater is greater than a first preset threshold; and the intensity of the detection signal is greater than a second preset threshold.

[0085] In some embodiments of this disclosure, the first preset threshold may be set to 90%.

[0086] In some embodiments of this disclosure, the first preset threshold may be set to 80%.

[0087] It should be noted that the embodiments disclosed herein do not impose specific limitations on the first preset threshold.

[0088] In some embodiments of this disclosure, the detection signal may be a visible light signal, because calcium fluoride has high transmittance in the visible light range.

[0089] For example, the detection signal can be light in the red light band.

[0090] In some embodiments of this disclosure, the value of the second preset threshold can be set based on experimental verification. For example, an experiment can be designed to ensure that even when the deposit completely blocks the cross-section of the liquid transport pipeline along the y-direction, the receiver can still receive the detection signal of the deposit passing through the interior of the liquid transport pipeline.

[0091] The receiver is configured to receive a detection signal of sediment passing through the liquid transport pipeline and output first detection information based on the detection signal of sediment passing through the liquid transport pipeline.

[0092] Further embodiments of the transmitter and the receiver can be found in the foregoing related embodiments, and will not be repeated here.

[0093] In some embodiments of this disclosure, the second detection circuit A2 may include a flow meter configured to detect the outflow rate of the liquid transfer device and output second detection information.

[0094] For example, a flow meter can be installed at the outlet of the liquid transmission pipeline of the liquid transmission device. When the flow meter detects that the water flow rate at the outlet of the liquid transmission pipeline is less than or equal to the flow threshold, it can output a high level as a second detection information, indicating that the gas transmission device needs to be controlled to aerate the liquid transmission device. When the flow meter detects that the water flow rate at the outlet of the liquid transmission pipeline is greater than the flow threshold, it can output a low level as a second detection information, indicating that the gas transmission device does not need to be controlled to aerate the liquid transmission device.

[0095] In some embodiments of this disclosure, the second detection circuit A2 may include a liquid level detection device configured to detect the liquid level in the neutralization tank and output second detection information.

[0096] For example, when the liquid level detection device detects that the liquid level rise rate in the neutralization tank is less than or equal to the speed threshold, it can output a high level as a second detection information, indicating that it is necessary to control the gas transmission device to aerate the liquid transmission device; when the liquid level detection device detects that the liquid level rise rate in the neutralization tank is greater than the speed threshold, it can output a low level as a second detection information, indicating that it is not necessary to control the gas transmission device to aerate the liquid transmission device.

[0097] Figure 6 An example diagram illustrating the installation location of another control device for a wastewater treatment system, consistent with some embodiments of this disclosure, is shown. In some embodiments, the wastewater treatment system may include a liquid transfer device and a gas transfer device. The liquid transfer device may include a liquid transfer line CH and a second valve F2, the second valve F2 being coupled to the liquid transfer line CH and configured to open or close in response to a control signal output by the control circuit.

[0098] The gas transmission device may include:

[0099] Gas storage device C3.

[0100] The gas transmission line CX is coupled to the gas storage device C3 and the liquid transmission line CH, respectively.

[0101] A first valve F1, coupled to the gas transmission pipeline CX, is configured to open or close in response to a control signal output by the control circuit. Specifically, in response to the opening of the first valve F1, the gas transmission device aerates the liquid transmission device.

[0102] In some embodiments of this disclosure, in response to the first detection information being first information and / or the second detection information being first information, the control circuit outputs a control signal to control the first valve to open and simultaneously controls the second valve to close.

[0103] For example, continue to refer to Figure 6 In response to the first detection information being the first information, which can be a high level, the control circuit outputs a control signal to control the first valve F1 to open, and the gas transmission device to aerate the liquid transmission device. At the same time, it controls the second valve F2 to close to prevent gas from overflowing from the outlet of the liquid transmission pipeline CH, thereby improving the aeration effect.

[0104] For example, in response to the second detection information being the first information, where the first information can be at a high level, the control circuit outputs a control signal to control the first valve F1 to open, the gas transmission device to aerate the liquid transmission device, and simultaneously controls the second valve F2 to close.

[0105] For example, in response to the first detection information and the second detection information being simultaneously the first information, where the first information can be at a high level, the gas transmission device aerates the liquid transmission device while simultaneously controlling the second valve F2 to close.

[0106] This disclosure also provides a wastewater treatment system, including:

[0107] Liquid transfer device;

[0108] A gas transfer device, connected to the liquid transfer device;

[0109] The control device for a wastewater treatment system described in any of the above embodiments is coupled to the liquid transfer device and the gas transfer device, and is configured to control the gas transfer device to aerate the liquid transfer device.

[0110] By using the above-mentioned wastewater treatment system, since the control device can control the gas transmission device to aerate the liquid transmission device, the probability of blockage in the liquid transmission device of the wastewater treatment system can be reduced.

[0111] In the description of this disclosure, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0112] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0113] While the embodiments disclosed herein are as described above, this application is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this invention; therefore, the scope of protection of this application should be determined by the scope defined in the claims.

Claims

1. A control device for a wastewater treatment system, characterized in that, The wastewater treatment system includes a liquid transfer device and a gas transfer device. The liquid transfer device includes a liquid transfer pipeline, and the gas transfer device is connected to the liquid transfer pipeline. The control device includes: A first detection circuit, coupled to the liquid transport pipeline, is configured to transmit a detection signal into the liquid transport pipeline and output first detection information based on the detection signal, wherein the first detection information is suitable for characterizing the content of deposits inside the liquid transport pipeline. The second detection circuit is coupled to the liquid transmission pipeline and configured to detect the outflow rate of the liquid transmission pipeline and output second detection information. The control circuit is coupled to the first detection circuit and the second detection circuit respectively, and is configured to output a control signal based on the first detection information and / or the second detection information to control the gas transmission device to aerate the liquid transmission pipeline.

2. The control device according to claim 1, characterized in that, The first detection circuit includes at least one detector, which is arranged at preset intervals starting from the inlet end of the liquid transfer pipeline along a first direction, wherein the first direction is from the inlet end of the liquid transfer pipeline to the outlet end. The detector includes: The transmitter is configured to emit an initial detection signal into the liquid delivery pipeline and then obtain a detection signal, wherein the transmission path of the initial detection signal passes through the sediment; The receiver is configured to output first detection information based on the detection signal.

3. The control device according to claim 2, characterized in that, The transmitter and the receiver are located on the same side of the liquid transmission pipeline; The transmitter is configured to transmit a detection signal along a second direction; The receiver is configured to receive the reflected signal of the detection signal reflected back by the deposits inside the liquid transmission pipeline, and to output first detection information based on the reflected signal.

4. The control device according to claim 2, characterized in that, The transmitter and the receiver are disposed on opposite sides of the liquid transmission pipeline along a second direction, which is a direction perpendicular to the liquid transmission pipeline. The transmitter is configured to transmit a detection signal along the second direction; The receiver is configured to receive a detection signal of sediment passing through the interior of the liquid transport pipeline, and to output first detection information based on the detection signal of sediment passing through the interior of the liquid transport pipeline.

5. The control device according to claim 2, characterized in that, The liquid transport pipeline contains sediments generated from fluoride-containing wastewater; the transmitter and the receiver are disposed on opposite sides of the liquid transport pipeline along a second direction, which is perpendicular to the liquid transport pipeline. The transmitter is configured to transmit a detection signal along the second direction, wherein the transmittance of the detection signal through the sediment generated by the fluoride-containing wastewater is greater than a first preset threshold. The intensity of the detected signal is greater than the second preset threshold; The receiver is configured to receive a detection signal of sediment passing through the interior of the liquid transport pipeline, and to output first detection information based on the detection signal of sediment passing through the interior of the liquid transport pipeline.

6. The control device according to claim 1, characterized in that, The second detection circuit includes a flow meter configured to detect the outflow rate of the liquid transfer device and output second detection information.

7. The control device according to claim 2, characterized in that, The gas transmission device includes: Gas storage devices; Gas transmission pipelines are coupled to the gas storage device and the liquid transmission pipeline, respectively; A first valve, coupled to the gas transmission pipeline, is configured to open or close in response to a control signal output by the control circuit; In response to the opening of the first valve, the gas transmission device aerates the liquid transmission pipeline.

8. The control device according to claim 7, characterized in that, The liquid transmission pipeline further includes a second valve, coupled to the liquid transmission pipeline, configured to open or close in response to a control signal output by the control circuit.

9. The control device according to claim 8, characterized in that, In response to the first detection information being first information and / or the second detection information being first information, the control circuit outputs a control signal to control the first valve to open, and simultaneously controls the second valve to close.

10. A wastewater treatment system, characterized in that, include: Liquid transfer device; A gas transfer device, connected to the liquid transfer device; The control device for a wastewater treatment system according to any one of claims 1-9, coupled to the liquid transfer device and the gas transfer device, is configured to control the gas transfer device to aerate the liquid transfer device.

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