Modular solid-liquid separation system for sewage pretreatment

Abstract

The invention relates to the technical field of sewage separation, in particular to a sewage pretreatment modular solid-liquid separation system which comprises a plurality of separation modules, the separation tank is used for conveying the raw water to the collection ports corresponding to the separation modules respectively and controlling the liquid inlet amount of the raw water through channels between the gates and the collection ports; the liquid inlet is connected with the separation tank and is used for conveying raw water to the separation tank; the recycling tank is used for conveying recycled water to the liquid inlet or outputting purified water through the liquid outlet; a liquid outlet; and the waste material groove is connected with the tail end of each separation module and is used for outputting waste materials. The modularized separation module is arranged, the separation tank is used for distributing sewage, the detector is arranged on the separation tank and used for detecting the liquid level, the sewage is rapidly treated in a water quantity control mode, the treatment efficiency is effectively improved, the treatment effect is improved, meanwhile, the modularized mode is utilized, and the sewage treatment efficiency is improved. And the suitability of the system is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater separation technology, and in particular to a modular solid-liquid separation system for wastewater pretreatment. Background Technology

[0002] The core objective of solid-liquid separation technology in wastewater pretreatment is to efficiently remove suspended solids before biochemical treatment, thereby reducing the burden on subsequent processes. In existing technologies, sedimentation or membrane filtration is often used for solid-liquid separation.

[0003] Chinese Patent Publication No. CN116392871B discloses a wastewater solid-liquid separation device, relating to the field of sludge treatment technology. It includes a housing, a first filter plate, a first conveying assembly, and a resetting assembly. The housing is vertically arranged and has a top-opening structure. A first arc-shaped groove and a second arc-shaped groove are respectively formed on two opposite inner sidewalls of the housing. A water outlet pipe is provided on the housing and communicates with the interior of the housing. The first filter plate is horizontally arranged inside the housing and rotatably connected to the housing. Both ends of the first filter plate abut against the bottom of the first arc-shaped groove and the bottom of the second arc-shaped groove, respectively. The first filter plate has a plurality of first filter holes. The first conveying assembly is used to convey and discharge solid impurities accumulated on the first filter plate. The resetting assembly is used to reset the first filter plate. This application can improve the efficiency of wastewater solid-liquid separation.

[0004] Chinese Patent Publication No. CN118851497B discloses a wastewater solid-liquid separation device, belonging to the field of wastewater treatment technology. It includes a primary sedimentation tank, a first pipe, a separation tank assembly, a second pipe, an air collection assembly, a water replenishment / backwashing pipe, an oil discharge pipe, and a PLC control system. The first pipe is connected to the primary sedimentation tank and the separation tank assembly at both ends. The second pipe, the water replenishment / backwashing pipe, and the oil discharge pipe are all connected to the separation tank assembly. Wastewater containing solid impurities and oil first enters the primary sedimentation tank. After preliminary neutralization and sedimentation, it is pumped into the separation tank assembly. Under the continuous impact of airflow, the oil in the separation tank assembly floats to the surface of the wastewater, and the solid particles in the separation tank assembly become smaller. This invention improves the efficiency of air flotation by aerating different areas within the separation tank. Alternating aeration near the side walls of the separation tank accelerates the discharge of oil. The use of a cutter reduces the particle size of solids, thus reducing the difficulty of sludge treatment.

[0005] Membrane technology is expensive and cannot effectively maintain effluent efficiency, while sedimentation technology requires a large area and cannot effectively maintain treatment results.

[0006] Therefore, for wastewater with large volumes that require continuous treatment, existing technologies cannot maintain stable effluent volume while preserving effluent quality. Summary of the Invention

[0007] To address this issue, the present invention provides a modular solid-liquid separation system for wastewater pretreatment, which overcomes the problem that existing technologies cannot maintain stable effluent volume while preserving effluent quality.

[0008] To achieve the above objectives, the present invention provides a modular solid-liquid separation system for wastewater pretreatment, comprising: Several separate modules; Separation tanks are used to separately deliver raw water to collection ports corresponding to each separation module, and The amount of raw water entering the system is controlled by the channels between the gate and each collection port. The inlet is connected to the separation tank and is used to supply raw water to the separation tank; The recycling tank is used to send recycled water to the inlet, or to output clean water through the outlet. The liquid outlet; The waste trough is connected to the end of each separation module and is used to output waste.

[0009] Furthermore, a single separate module includes: The collection port; The separation chamber, connected to the collection port, is used to separate waste and purified water from the raw water; The first sorting chamber, connected to the separation chamber, is used to detect the separated purified water and to transport the purified water to the recycling tank. The second sorting chamber, connected to the separation chamber, is used to detect the separated intermediate water and to transport the intermediate water to the recycling tank. The waste bin, connected to the separation tank via the waste inlet, is used to determine whether the content of clean water and / or intermediate water in the remaining waste is lower than the separable content, and to transport them to the waste tank or the collection port respectively. The first sorting bin and the second sorting bin are connected to the recycling tank via recycling pipes, and the recycled water is a mixture of clean water and intermediate water.

[0010] Furthermore, the separation tank is equipped with a first liquid level detector at each liquid inlet, and different water volumes are set according to the amounts of purified water and intermediate water. When the water volume reaches the required level for water separation, the separation tank maintains the water volume, allowing the raw water to be separated into the first sorting chamber. When the water volume reaches the intermediate water separation volume, the separation tank maintains the water volume, the channel of the second sorting chamber is opened, and the intermediate water is separated into the second sorting chamber; If the response water volume reaches or does not reach the intermediate water separation volume, the first liquid level detector determines that it is impossible to separate clean water or intermediate water, closes the recovery tank, discharges intermediate water into the recovery tank, and adjusts the water volume at the inlet to the waste separation volume; When the waste material is detected to have accumulated to a preset position, the waste hopper determines that the clean water or intermediate water cannot be separated. The separation hopper closes the corresponding channels of the first and second sorting hoppers and opens the waste trough.

[0011] Furthermore, when the water level in each sub-testing chamber reaches the preset position, standard testing is initiated, and the results of the standard testing determine whether the clean water or intermediate water in the sub-testing chamber is qualified. If the response meets the water purification standard, the water in the first sorting compartment will be sent as purified water into the recycling tank. When the response reaches the intermediate water standard, the water from the first and / or second sorting bins is sent as intermediate water into the recycling tank.

[0012] Furthermore, if the intermediate water standard is not met, the first or second sorting compartment is determined to be contaminated, and a flushing strategy is implemented. In response to any separation module executing the flushing strategy, the separation tank closes the collection ports of each separation module and increases the water volume in the tank to the maximum water volume; When the response reaches the maximum water volume, the separation module opens the collection port and opens the connection between the separation chamber and the first and second sorting chambers for flushing.

[0013] Furthermore, the waste bin also detects the moisture content of the waste inside, compares the moisture content with the standard content, and transports the detected material to the waste collection port and recycling tank. The recycling tank is connected to the waste detection chamber and the separation tank respectively, and is used to store the materials transported from the waste silo and transport them to the separation tank. Waste inlet, used to collect purified water that has passed the initial inspection; The remaining material is the material remaining after separating the purified water, intermediate water, and recycled water; The separable content is the minimum content of the target material that the separation tank can separate.

[0014] Furthermore, the waste trough detects the moisture content of the remaining material and compares it with the separable content. If the moisture content of the remaining material is not greater than the separable content, the remaining material is determined to be waste and output. If the moisture content of the remaining material is greater than the separable content, it is determined that the waste bin is contaminated or the raw water in the separation tank has overflowed, and either separation module is controlled to stop outputting waste. If the waste bin is contaminated, a flushing strategy shall be implemented.

[0015] Furthermore, the separation tank is equipped with a second liquid level detector to determine the amount of water in the separation tank; If the second level detector determines that the raw water in the separation tank has reached the standard capacity, the raw water is added to the separation tank at the current rate. If the second level detector detects that the raw water in the separation tank has not reached the standard capacity, it closes all collection ports and adds raw water to the separation tank at the current rate.

[0016] Furthermore, the recovery tank includes a third level detector to determine the water level of the clean water or intermediate water in the recovery tank; When the third level detector detects that the water level in the recovery tank has reached the standard capacity... If the recovery tank contains clean water, the separation tank will stop supplying raw water and open the outlet to output clean water. If the water in the recycling tank is intermediate water, each separation module will stop outputting intermediate water.

[0017] Furthermore, the second and third level detectors are also provided with a minimum capacity, wherein, When the second liquid level detector detects that the water level in the separation tank is lower than the minimum capacity, all collection ports are closed. When the third liquid level detector detects that the water level in the recovery tank is lower than the minimum capacity, the liquid outlet is closed.

[0018] Compared with the prior art, the beneficial effects of the present invention are that by setting up a modular separation module, wastewater is distributed using a separation tank, and a detector is set on the separation tank to detect the liquid level. While ensuring treatment efficiency, the wastewater is quickly treated by controlling the amount of water to be treated. This effectively improves both treatment efficiency and treatment effect. At the same time, the modular approach effectively improves the adaptability of the system.

[0019] Furthermore, by using a mixture of intermediate water and raw water, substandard water can undergo secondary purification. This allows for the identification and return of near-compliant intermediate water and usable water remaining in waste materials to the upstream treatment process, thus forming a cycle and effectively improving the effluent quality.

[0020] Furthermore, by using multiple liquid level sensors, the operating status of the separation tank, recovery tank, and each sorting compartment is monitored in real time. The liquid level is used to control the valves and gates at each location. This avoids the decline in treatment effect caused by fluctuations in the raw water supply, and ensures that the entire system operates within the most suitable parameter range, thereby effectively improving the stability of the effluent quality and the reliability of the system operation.

[0021] Furthermore, by using water storage in the separation tank to flush the interior of any contaminated separation module, the problem of the equipment being unable to be repaired online is effectively avoided, while the continuity of equipment operation is improved. Moreover, the maintenance cycle of the separation module can be extended through flushing, thereby effectively improving the stability of the effluent water quality.

[0022] Furthermore, by using the capacity feedback of the monitoring and recovery tank to regulate the output of purified water and the return of intermediate water, and by controlling the supply of the separation tank to each separation module based on the analysis results of the waste bin, the separation modules can operate under normal operating conditions, thereby improving the stability of the effluent water quality.

[0023] Furthermore, the present invention has the following advantages: 1. Modular design enhances system flexibility and reliability; 2. Intelligent classification and recycling improve resource utilization and water recovery rates; 3. Intelligent closed-loop control based on multi-parameter sensing, with a high degree of automation and stable operation; 4. It has self-cleaning and fault-resistant capabilities, making maintenance convenient and highly reliable; 5. The system has a high degree of integration, with each unit working collaboratively, resulting in improved overall efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the modular solid-liquid separation system for wastewater pretreatment of the present invention; Figure 2 This is a schematic diagram of the external appearance of the modular solid-liquid separation system for wastewater pretreatment according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the separation tank and recovery tank according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the liquid inlet structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of liquid level detection according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the waste trough structure according to an embodiment of the present invention; The components include: 1. Water distribution system; 11. Separation tank; 12. Recovery tank; 13. Liquid inlet; 14. Water outlet; 15. Water inlet pipe of recovery tank; 16. Collection port; 161. Weir plate drive; 162. Drive shaft; 163. Adjusting weir plate; 164. First liquid level detector; 165. Second liquid level detector; 166. Electric gate; 167. Fine screen; 168. Drainage outlet; 2. Separation module; 3. Waste tank. Detailed Implementation

[0025] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0026] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0027] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0028] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Please see Figure 1 The diagram shown is a structural schematic of the modular solid-liquid separation system for wastewater pretreatment according to the present invention. The modular solid-liquid separation system for wastewater pretreatment includes: Several separate modules; Separation tanks are used to separately deliver raw water to collection ports corresponding to each separation module, and The amount of raw water entering the system is controlled by the channels between the gate and each collection port. The liquid inlet is connected to the separation tank and is used to supply raw water to the separation tank; The recycling tank is used to send recycled water to the inlet, or to output clean water through the outlet. liquid outlet; The waste trough is connected to the end of each separation module and is used to output waste.

[0030] By setting up modular separation modules and using separation tanks to distribute wastewater, and installing detectors on the separation tanks to monitor the liquid level, the wastewater is treated quickly while ensuring treatment efficiency. This effectively improves both treatment efficiency and treatment effect. At the same time, the modular approach effectively enhances the system's adaptability.

[0031] Specifically, a single separate module includes: Collection port; The separation chamber, connected to the collection port, is used to separate waste and purified water from the raw water. The first sorting chamber, connected to the separation chamber, is used to test the separated purified water and to transport the purified water to the recycling tank. The second sorting chamber, connected to the separation chamber, is used to detect the separated intermediate water and to transport the intermediate water to the recycling tank. The waste bin is connected to the separation tank through the waste inlet. It is used to determine whether the content of clean water and / or intermediate water in the remaining waste is lower than the separable content, and then transport them to the waste tank or collection port respectively. The first sorting bin and the second sorting bin are connected to the recycling tank via recycling pipes, and the recycled water is a mixture of clean water and intermediate water.

[0032] By using a mixture of intermediate water and raw water, substandard water can undergo secondary purification. This allows for the identification and return of near-compliant intermediate water and usable water remaining in waste materials to the upstream treatment process, creating a cycle that effectively improves the quality of the effluent.

[0033] Specifically, the separation tank is equipped with a first liquid level detector at each liquid inlet, and different water volumes are set according to the requirements for purified water and intermediate water. When the response water volume reaches the water volume for purification and separation, the separation tank maintains the water volume, allowing the raw water to be separated into the first sorting chamber; When the response water volume reaches the intermediate water separation volume, the separation tank maintains the water volume, the channel of the second sorting chamber is opened, and the intermediate water is separated into the second sorting chamber; If the response water volume reaches or does not reach the intermediate water separation volume, the first liquid level detector determines that it is impossible to separate clean water or intermediate water, closes the recovery tank, discharges the intermediate water into the recovery tank, and adjusts the water volume at the inlet to the waste separation volume. When the waste material accumulates to a preset position, the waste hopper determines that the clean water or intermediate water cannot be separated. The separation hopper closes the corresponding channels of the first and second sorting hoppers and opens the waste trough.

[0034] It should be noted that the first liquid level detector can be a float level switch or a hydrostatic level sensor, which can be configured together with the PLC or control system to enable automatic operation. In use, a float level switch or hydrostatic level sensor is vertically installed in the separation tank corresponding to the position of each collection port, and different action points are set as level thresholds.

[0035] When the liquid level is low, the float is at the bottom, and the magnet inside it is far from the reed switch inside the rod, putting the switch in the off state. This indicates insufficient water volume, and the PLC will determine that effective separation is not possible, and may perform operations such as closing the recovery tank channel or switching to waste separation mode.

[0036] When raw water is injected and the liquid level rises to the set height for the intermediate water separation volume, the float rises and triggers the magnetic switch at the first position on the trigger rod, closing it. This signal is transmitted to the PLC, which then instructs to maintain the current water volume and open the channel to the second sorting compartment.

[0037] When the liquid level continues to rise to the set height for the purified water separation volume, the float triggers the second magnetic switch at a higher position on the lever. Upon receiving this signal, the PLC controls the gate to maintain the current optimal water volume, ensuring that the separation process prioritizes the generation of purified water and directs it to the first sorting compartment.

[0038] Specifically, the separation tank is equipped with a second liquid level detector to determine the amount of water in the separation tank; If the second level detector determines that the raw water in the separation tank has reached the standard capacity, the raw water is added to the separation tank at the current rate. If the second level detector detects that the raw water in the separation tank has not reached the standard capacity, close all collection ports and add raw water to the separation tank at the current rate.

[0039] It should be noted that the second liquid level detector can be an ultrasonic liquid level sensor or a hydrostatic liquid level sensor, which can be set up together with the PLC or control system to enable it to operate automatically.

[0040] Specifically, the recovery tank includes a third level detector to determine the level of clean or intermediate water in the recovery tank; When the third level detector detects that the water level in the recovery tank has reached the standard capacity... If the recovery tank contains clean water, the separation tank will stop supplying raw water and open the outlet to output clean water. If the water in the recovery tank is intermediate water, each separation module will stop outputting intermediate water.

[0041] It should be noted that the third level detector can be a capacitive level switch or a radar level gauge, which can be set up together with the PLC or control system to enable it to operate automatically.

[0042] Specifically, the second and third level detectors also have a minimum capacity, wherein... When the second liquid level detector detects that the water level in the separation tank is lower than the minimum capacity, all collection ports are closed. When the third liquid level detector detects that the water level in the recovery tank is lower than the minimum capacity, the outlet is closed.

[0043] By using multiple liquid level sensors, the operating status of the separation tank, recovery tank, and each sorting compartment is monitored in real time. The liquid level is used to control the valves and gates at each location. This avoids the decline in treatment effect caused by fluctuations in the raw water supply, and ensures that the entire system operates within the most suitable parameter range, thereby effectively improving the stability of the effluent quality and the reliability of the system operation.

[0044] Specifically, when the water level in each sub-inspection chamber reaches the preset position, standard testing is initiated, and the results of the standard testing determine whether the clean water or intermediate water in the sub-inspection chamber is qualified. Among them, if the response meets the water purification standard, the water in the first sorting chamber will be sent to the recycling tank as purified water. If the response reaches the intermediate water standard, the water from the first and / or second sorting bins will be sent to the recycling tank as intermediate water.

[0045] Specifically, if the intermediate water standard is not met, the first or second sorting compartment is determined to be contaminated, and a flushing strategy is implemented. In response to any separation module executing the flushing strategy, the separation tank closes the collection ports of each separation module and increases the water volume in the tank to the maximum. When the response is increased to the maximum water volume, the separation module opens the collection port and opens the connection between the separation chamber and the first and second sorting chambers for flushing.

[0046] By using water storage in the separation tank to flush the interior of any contaminated separation module, the problem of the equipment being unable to be repaired online is effectively avoided, while the continuity of equipment operation is improved. Furthermore, the flushing method extends the maintenance cycle of the separation module, thereby effectively improving the stability of the effluent water quality.

[0047] Specifically, the waste bin also tests the moisture content of the waste inside, compares the moisture content with the standard content, and transports the tested material to the waste collection outlet and recycling tank. The recycling tank is connected to the waste detection chamber and the separation tank respectively, and is used to store the materials transported from the waste silo and transport them to the separation tank. Waste inlet, used to collect purified water that has passed the initial inspection; The remaining material is the material left after separating the purified water, intermediate water, and recycled water; Separable content is the minimum amount of target material that the separation tank can separate.

[0048] Specifically, the waste trough tests the moisture content of the remaining material and compares it with the separable content. If the moisture content of the remaining material is not greater than the separable content, the remaining material is determined to be waste and output. If the moisture content of the remaining material is greater than the separable content, it is determined that the waste bin is contaminated or the raw water in the separation tank has overflowed, and any separation module is controlled to stop outputting waste. If the waste bin is contaminated, a flushing strategy should be implemented.

[0049] By using the capacity feedback of the monitoring and recovery tank to regulate the output of purified water and the return of intermediate water, and by controlling the supply of the separation tank to each separation module based on the analysis results of the waste bin, the separation modules can operate under normal operating conditions, thereby improving the stability of the effluent water quality.

[0050] Please see Figure 2 As shown, it is a schematic diagram of the appearance of the modular solid-liquid separation system for wastewater pretreatment according to an embodiment of the present invention, which includes a water distribution system 1, a separation module 2, and a waste tank 3.

[0051] The water distribution system 1 can be an integrated steel structure with two layers, the upper and lower layers being two rectangular cavity structures stacked together. Please cooperate. Figure 2 See Figure 3 As shown, Figure 3 This is a schematic diagram of the separation tank and recovery tank according to an embodiment of the present invention. In the figure: The upper layer of the water distribution system is set as a separation tank 11, and the lower layer is set as a recovery tank 12. When the rectangular cavity structures of the upper and lower integrated steel structures are stacked, the width (i.e., the shorter direction parallel to the ground) is the same, and the width direction is aligned. The length and height directions of the upper and lower layers (i.e., the longer direction parallel to the ground and the direction perpendicular to the ground) can be aligned or staggered. The rectangular cavity structures can be the same or different, and the structure and size are set according to the actual water volume.

[0052] Please see Figure 4 As shown, this is a schematic diagram of the liquid inlet structure of an embodiment of the present invention. The separation tank 11 is equipped with a liquid inlet 13 at one end; the liquid inlet 13 is a standard steel flange, and the size of the flange is determined according to the amount of sewage; the liquid inlet 13 can be arbitrarily set at one end of the separation tank 11, either up, down, left, right or any side of the end face.

[0053] One end of the recycling tank 12 is equipped with an outlet 14; the outlet 14 is a standard steel flange, and the size of the flange is determined according to the amount of sewage; the recycling tank 12 is connected to the outlet of the separation module 2 through the recycling tank inlet pipe 15, so that the sewage treated by the separation module 2 flows into the recycling tank 12.

[0054] Please see Figure 5 As shown, this is a schematic diagram of liquid level detection according to an embodiment of the present invention. The separation tank 11 is also provided with several collection ports 16 corresponding to the separation module 2; the collection ports 16 are installed at the inlet of the separation module 2. Each collection port 16 consists of a weir plate drive 161, an adjusting weir plate 163, a first liquid level detector 164, a mounting frame, and a controller. The mounting frame is a rectangular frame structure matching the size of the inlet of the separation module 2. Connecting flanges are provided at both ends of the rectangular frame, which are bolted to the inlet of the separation module 2; the other end is bolted to the side wall of the separation tank 11. A drive shaft 162 extending through the length of the rectangular frame is provided at the bottom of the frame, and the adjusting weir plate 163 is welded and fixed to the drive shaft 162. The width of the adjusting weir plate 163 is consistent with the inner diameter of the mounting frame, and the adjusting weir plate 163 can rotate 0-90° around the drive shaft 162.

[0055] One end of the drive shaft 162 extends out of the mounting frame and connects to the weir plate drive 161. This connection can be achieved via a synchronous belt, worm gear, or direct servo motor connection. The output torque of the weir plate drive 161 causes the drive shaft 162 to rotate, thereby adjusting the synchronous opening and closing rotation of the weir plate 163. The first liquid level detector 164 monitors the liquid level changes in the separation module 2 in real time, and the second liquid level detector 165 monitors the liquid level changes in the separation tank 11 in real time and transmits the monitoring data to the controller.

[0056] The working principle of the collection port 16 is a non-submerged rectangular weir, and the flow rate calculation formula is Equation (1): (1) In the formula, Q is the total flow rate, b is the weir width, H is the head above the weir, g is the gravitational acceleration, and m is the flow coefficient.

[0057] P is the height of the weir plate, H1 is the liquid level in the separation tank 11, H0 is the liquid level behind the regulating weir plate 163, and Z is the head loss value of the inlet water of the separation module 2.

[0058] The vertical height of the regulating weir plate 163 is consistent with the height of the inner diameter of the mounting frame of the collection port 16. When the regulating weir plate 163 is rotated by a certain angle under the drive of the weir plate drive 161, the height of the weir plate is P, which can be calculated from the top of the regulating weir plate 163 to the bottom of the mounting frame of the collection port 16 according to the Pythagorean theorem. The first liquid level detector 165 can detect the liquid level height H1 in the collection port 16. At this time, the water head height on the weir is H=H1-P. Therefore, the real-time flow rate of the collection port 16 can be calculated by formula (1). Furthermore, the flow rate Q3 of the collection port 16 can be adjusted by changing the height of the regulating weir plate 163. The purpose of uniformly or quantitatively distributing sewage to the separation module 2 can be achieved through the adjustment function of the collection port 16.

[0059] An emergency treatment device is also provided at the other end of the separation tank 11. The emergency treatment device includes an electric gate 166, a fine screen 167, and a drain outlet 168. The drain outlet 168 is used for emergency drainage. When the separation module 2 malfunctions or its processing capacity is insufficient, the control system controls the gate to open and close, allowing some or all of the sewage to flow directly into the fine screen 167 for filtration without passing through the separation module 2, and then discharge it into the recovery tank 12 or the main sewage outlet pipeline through the drain outlet 168. The electric gate 166 is installed in the water channel of the separation tank 11. The fine screen 167 is installed behind the electric gate 166; when the electric gate 166 is opened, the sewage is coarsely filtered through the fine screen 167 and then discharged through the drain outlet 168.

[0060] The inlet, outlet, and slag discharge port of the separation module 2 are respectively connected to the separation tank 11, the recovery tank 12, and the feed port of the screenings conveying equipment.

[0061] Please see Figure 6 The diagram shows a schematic of the waste trough structure according to an embodiment of the present invention. The waste trough 3 is equipped with a screenings conveying device and a screenings pressing device. The screenings conveying device can have one or more inlets, the number corresponding to the number of separation modules 2. The discharge port of the separation module 2 is sealed to the inlet of the screenings conveying device via a screenings chute, ensuring no wastewater or harmful gases leak out during the conveying process. After all the screenings are conveyed to one end by the screenings conveying device, they are discharged into the screenings pressing device. The screenings conveying device and the screenings pressing device are also sealed together. The screenings pressing device further dewaters the screenings, reducing the moisture content to 60-90%, before a secondary transfer process.

[0062] The control system (not shown in the figure) includes an intelligent water distribution controller, a separation module controller, and a waste tank controller. The control system's various controllers are linked through algorithms: After the entire system starts up, the collection port monitors the liquid level through a level gauge and calculates the real-time water intake of each separation module using a formula; when the first level detector detects that the water level in the separation module rises above the preset height, it transmits a signal to the intelligent water distribution controller, which drives the regulating weir plate to rise, reducing the total water intake of the separation module and ensuring that the equipment does not operate under overload; when the second level detector detects that the liquid level in the separation tank rises above the set value, it transmits a signal to the fine screen and electric gate, which activate the fine screen and open the electric gate, thereby discharging excess sewage from the separation tank and ensuring that no sewage overflows; when the second level detector detects that the liquid level in the separation tank drops below the set value, it transmits a signal to close the fine screen and electric gate; when the collection port detects that the water intake of each separation module is low, it transmits a signal to the waste trough controller, which sends a signal to control the intermittent operation of the screenings conveying equipment and screenings pressing equipment, thereby reducing equipment energy consumption and wear.

[0063] The control system operates as follows: First, the wastewater pretreatment system starts the separation module 2 equipment according to the designed wastewater treatment capacity. The intelligent water distribution controller calculates the real-time water volume Q1 in the separation tank 11 through the second liquid level detector 165 installed in the separation tank 11. The Q1 data is transmitted to the separation module controller, which compares the real-time water volume Q1 with the processing capacity Q2 of the separation module 2. Since the total wastewater volume Q1 changes in real time, when Q1 / Q2 is less than or equal to 1, the system automatically adjusts and starts one separation module 2. When Q1 / Q2 is greater than 1, it rounds up to the nearest integer and starts the corresponding number of separation modules 2. When Q1 / Q2 is greater than the total number of existing separation modules 2, all separation modules 2 are started, and the electric gate 166 is opened simultaneously, allowing a portion of the wastewater to flow into the drain outlet 168 after being treated by the fine screen 167. During system operation, the water volume Q3 is adjusted through the collection port 16 to ensure that Q3 ≤ Q2, preventing the separation module 2 equipment from operating under overload. At the same time, the processing capacity data of each separation module 2 is fed back to the system in real time. The system intelligently allocates start-up time and water distribution volume by comparing the total processing capacity of each separation module 2 and statistically analyzing the continuous operating time of each separation module 2. This achieves the goal of intelligent rotation operation of the separation modules 2.

[0064] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention; various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular solid-liquid separation system for wastewater pretreatment, characterized in that, include: Several separate modules; Separation tanks are used to separately deliver raw water to collection ports corresponding to each separation module, and The amount of raw water entering the system is controlled by the channels between the gate and each collection port. The inlet is connected to the separation tank and is used to supply raw water to the separation tank; The recycling tank is used to send recycled water to the inlet, or to output clean water through the outlet. The liquid outlet; The waste trough is connected to the end of each separation module and is used to output waste.

2. The modular solid-liquid separation system for wastewater pretreatment according to claim 1, characterized in that, A single separate module includes: The collection port; The separation chamber, connected to the collection port, is used to separate waste and purified water from the raw water; The first sorting chamber, connected to the separation chamber, is used to detect the separated purified water and to transport the purified water to the recycling tank. The second sorting chamber, connected to the separation chamber, is used to detect the separated intermediate water and to transport the intermediate water to the recycling tank. The waste bin, connected to the separation tank via the waste inlet, is used to determine whether the content of clean water and / or intermediate water in the remaining waste is lower than the separable content, and to transport them to the waste tank or the collection port respectively. The first sorting bin and the second sorting bin are connected to the recycling tank via recycling pipes, and the recycled water is a mixture of clean water and intermediate water.

3. The modular solid-liquid separation system for wastewater pretreatment according to claim 2, characterized in that, The separation tank is equipped with a first liquid level detector at each liquid inlet, and different water volumes are set according to the requirements for purified water and intermediate water. When the water volume reaches the required level for water separation, the separation tank maintains the water volume, allowing the raw water to be separated into the first sorting chamber. When the water volume reaches the intermediate water separation volume, the separation tank maintains the water volume, the channel of the second sorting chamber is opened, and the intermediate water is separated into the second sorting chamber; If the response water volume reaches or does not reach the intermediate water separation volume, the first liquid level detector determines that it is impossible to separate clean water or intermediate water, closes the recovery tank, discharges intermediate water into the recovery tank, and adjusts the water volume at the inlet to the waste separation volume; When the waste material is detected to have accumulated to a preset position, the waste hopper determines that the clean water or intermediate water cannot be separated. The separation hopper closes the corresponding channels of the first and second sorting hoppers and opens the waste trough.

4. The modular solid-liquid separation system for wastewater pretreatment according to claim 2, characterized in that, When the water level in each sub-testing chamber reaches the preset position, standard testing is initiated, and the results of the standard testing are used to determine whether the clean water or intermediate water in the sub-testing chamber is qualified. If the response meets the water purification standard, the water in the first sorting compartment will be sent as purified water into the recycling tank. When the response reaches the intermediate water standard, the water from the first and / or second sorting bins is sent as intermediate water into the recycling tank.

5. A modular solid-liquid separation system for wastewater pretreatment according to claim 4, characterized in that, If the intermediate water standard is not met, the first or second sampling compartment is determined to be contaminated, and a flushing strategy is implemented. In response to any separation module executing the flushing strategy, the separation tank closes the collection ports of each separation module and increases the water volume in the tank to the maximum water volume; When the response reaches the maximum water volume, the separation module opens the collection port and opens the connection between the separation chamber and the first and second sorting chambers for flushing.

6. A modular solid-liquid separation system for wastewater pretreatment according to claim 3 or 5, characterized in that, The waste bin also detects the moisture content of the waste inside, compares the moisture content with the standard content, and transports the detected material to the waste collection port and recycling tank. The recycling tank is connected to the waste detection chamber and the separation tank respectively, and is used to store the materials transported from the waste silo and transport them to the separation tank. Waste inlet, used to collect purified water that has passed the initial inspection; The remaining material is the material remaining after separating the purified water, intermediate water, and recycled water; The separable content is the minimum content of the target material that the separation tank can separate.

7. A modular solid-liquid separation system for wastewater pretreatment according to claim 6, characterized in that, The waste trough detects the moisture content of the remaining material and compares it with the separable content. If the moisture content of the remaining material is not greater than the separable content, the remaining material is determined to be waste and output. If the moisture content of the remaining material is greater than the separable content, it is determined that the waste bin is contaminated or the raw water in the separation tank has overflowed, and either separation module is controlled to stop outputting waste. If the waste bin is contaminated, a flushing strategy shall be implemented.

8. A modular solid-liquid separation system for wastewater pretreatment according to claim 7, characterized in that, The separation tank is equipped with a second liquid level detector to determine the amount of water in the separation tank; If the second level detector determines that the raw water in the separation tank has reached the standard capacity, the raw water is added to the separation tank at the current rate. If the second level detector detects that the raw water in the separation tank has not reached the standard capacity, it closes all collection ports and adds raw water to the separation tank at the current rate.

9. A modular solid-liquid separation system for wastewater pretreatment according to claim 8, characterized in that, The recovery tank includes a third level detector to determine the water level of the clean water or intermediate water in the recovery tank; When the third level detector detects that the water level in the recovery tank has reached the standard capacity... If the recovery tank contains clean water, the separation tank will stop supplying raw water and open the outlet to output clean water. If the water in the recycling tank is intermediate water, each separation module will stop outputting intermediate water.

10. The modular solid-liquid separation system for wastewater pretreatment according to any one of claims 9, characterized in that, The second and third level detectors are also provided with a minimum capacity, wherein, When the second liquid level detector detects that the water level in the separation tank is lower than the minimum capacity, all collection ports are closed. When the third liquid level detector detects that the water level in the recovery tank is lower than the minimum capacity, the liquid outlet is closed.

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