Drainage system for coal processing plant

Abstract

The utility model relates to the technical field of drainage systems, in particular to a drainage system for a coal processing plant. Comprising a wastewater treatment unit, and further comprises a final treatment water outlet pool, a sampling detection unit, a diversion execution mechanism and a controller, the sampling detection unit comprises a sampling module and a water quality detection unit, and the final treatment pool is communicated with the wastewater treatment unit and used for storing treated coal processing wastewater; the sampling module is used for collecting a coal processing wastewater sample from a final treatment water outlet pool, the water quality detection unit is used for detecting water quality parameters in the coal processing wastewater sample, the shunting execution mechanism comprises a drainage electromagnetic valve and a reflux pump, a channel where the drainage electromagnetic valve is located is communicated with a drainage port, and a channel where the reflux pump is located is communicated with the wastewater treatment unit. The output end of the water quality detection unit is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the input ends of the drainage electromagnetic valve and the reflux pump.

Description

A drainage system for a coal processing plant Technical Field

[0001] This utility model relates to the field of drainage system technology, and specifically to a drainage system for a coal processing plant. Background Technology

[0002] Coal chemical wastewater is industrial wastewater containing various pollutants generated during coal processing and conversion. Coal chemical processes mainly include coal gasification, liquefaction, and coking, which use large amounts of water and generate significant amounts of wastewater. If this wastewater is discharged directly without effective treatment, it will cause serious environmental pollution.

[0003] The main sources of wastewater in coal chemical industry include coal gasification, coal liquefaction, and coal coking. Coal gasification is the process of converting coal into syngas. During coal gasification, a large amount of wastewater is generated, primarily from gas washing, condensation, and purification processes. This wastewater contains high levels of pollutants such as phenols, ammonia nitrogen, cyanides, and sulfides. Coal liquefaction is the process of converting coal into liquid fuel. During coal liquefaction, wastewater containing high concentrations of organic matter, heavy metal ions, and suspended solids is generated. The organic matter in this wastewater mainly includes aromatics, alkanes, and phenols, while the heavy metal ions mainly include iron, nickel, and copper. Coking is the process of heating and decomposing coal into coke, coal gas, and chemical products under anaerobic conditions. Coking wastewater mainly comes from high-temperature coal dry distillation, coal gas purification, and chemical product recovery processes. This wastewater contains high levels of pollutants such as phenols, cyanides, ammonia nitrogen, sulfides, and petroleum hydrocarbons.

[0004] In general, coal chemical wastewater contains a variety of pollutants, including organic matter, inorganic matter, and heavy metal ions, making its composition complex. Phenolic compounds, ammonia nitrogen, cyanide, and sulfides are the main pollutants, and the types and concentrations of these pollutants vary depending on the specific coal chemical process. Furthermore, some pollutants in coal chemical wastewater, such as phenols and cyanide, are highly toxic, posing potential hazards to aquatic life and human health. Direct discharge without treatment would cause serious environmental pollution. Secondly, the high levels of organic matter and suspended solids in coal chemical wastewater result in high color, which not only affects the aesthetics of the environment but also impacts the survival of aquatic organisms.

[0005] Therefore, wastewater from coal processing plants undergoes several treatment processes before being discharged, including slag removal by bar screens, homogenization in equalization tanks, oil separation and sedimentation, air flotation, biological treatment, advanced oxidation treatment, filtration treatment, and reverse osmosis treatment. However, existing wastewater is usually discharged directly after treatment without testing, making it impossible to determine whether the treated wastewater is safe to discharge. Summary of the Invention

[0006] The technical problem solved by this utility model is to provide a drainage system for coal processing plants that can detect whether the treated wastewater meets the discharge standards.

[0007] The basic solution provided by this utility model is as follows: A drainage system for a coal processing plant includes a wastewater treatment unit, a final treated effluent tank, a sampling and detection unit, a diversion actuator, and a controller. The sampling and detection unit includes a sampling module and a water quality detection unit. The final treated tank is connected to the wastewater treatment unit and is used to store the treated coal processing wastewater. The sampling module is used to collect coal processing wastewater samples from the final treated effluent tank. The water quality detection unit is used to detect water quality parameters in the coal processing wastewater samples, including COD, ammonia nitrogen, cyanide, heavy metals, suspended solids, and pH value. The diversion actuator includes a drainage solenoid valve and a return pump. The passage of the drainage solenoid valve is connected to the drain outlet, and the passage of the return pump is connected to the wastewater treatment unit. The output end of the water quality detection unit is electrically connected to the input end of the controller. The output end of the controller is electrically connected to the input ends of the drainage solenoid valve and the return pump, respectively. The controller is used to control the opening and closing of the drainage solenoid valve and the return pump according to the water quality parameters of the unprocessed wastewater.

[0008] The principle and advantages of this utility model are as follows: the sampling and detection unit is responsible for collecting water samples from the final treated water tank and detecting the water quality parameters therein. When the detected water quality parameters meet the standards, the solenoid valve is opened to discharge the treated wastewater. If any water quality parameters are found to be substandard, the return pump is opened to return the wastewater to the treatment unit for further treatment.

[0009] By sampling and testing, the quality of treated water can be quickly understood, and drainage or recirculation can be automatically adjusted according to water quality parameters to ensure that wastewater meets discharge standards or is retreated, thereby reducing the direct discharge of substandard wastewater and lowering the environmental pollution rate.

[0010] Furthermore, it also includes a liquid level sensor, the output of which is electrically connected to the input of the controller, for detecting the liquid level height in the final treated effluent tank. The output of the controller is also electrically connected to the input of the sampling module, and the controller is also used to control the opening and closing of the sampling module according to the liquid level height in the final treated effluent tank.

[0011] A level sensor detects the liquid level in the final treated water tank and transmits this information to the controller. The controller then controls the activation and deactivation of the sampling module based on the liquid level, preventing invalid sampling when the liquid level is too low or there is no water. Liquid level monitoring ensures that the sampling module operates at the appropriate time, reducing resource waste and preventing system misjudgments or malfunctions caused by invalid sampling.

[0012] Furthermore, the wastewater treatment unit includes an advanced oxidation treatment unit, a chemical precipitation unit, a biological treatment unit, and an air flotation treatment unit. The passage of the advanced oxidation treatment unit is equipped with a first reflux solenoid valve, the passage of the chemical precipitation unit is equipped with a second reflux solenoid valve, the passage of the biological treatment unit is equipped with a third reflux solenoid valve, and the passage of the advanced oxidation treatment unit is equipped with a fourth reflux solenoid valve. The output terminal of the controller is also electrically connected to the output terminals of the first, second, third, and fourth reflux solenoid valves, respectively. The controller is also used to control the opening and closing of the first, second, third, and fourth reflux solenoid valves according to water quality parameters.

[0013] The wastewater treatment unit is subdivided into advanced oxidation treatment, chemical precipitation, biological treatment, and flotation treatment units. Each unit's pathway is equipped with reflux solenoid valves (first, second, third, and fourth reflux solenoid valves). The controller regulates the opening and closing of these valves based on water quality parameters to achieve wastewater reflux and retreatment. Through subdivided treatment units and reflux control, more precise treatment of specific pollutants can be achieved, ensuring the effective removal of various pollutants from the wastewater and improving effluent quality.

[0014] Furthermore, it also includes an alarm module, the output of which is electrically connected to the input of the alarm module, and the controller is also used to control the alarm module to issue an early warning based on water quality parameters.

[0015] When water quality parameters exceed preset ranges, the controller activates the alarm module to issue a warning signal. This alarm module enables timely detection and response to water quality anomalies, preventing potential environmental risks and improving the safety and reliability of the wastewater treatment process.

[0016] Furthermore, it also includes a storage module, the output of which is electrically connected to the input of the storage module, which is used to store the measured water quality parameters and the detection time.

[0017] The storage module records the water quality parameters and testing time for each test, facilitating subsequent analysis and traceability. It provides a complete historical record of water quality testing, aiding in the analysis and evaluation of wastewater treatment effectiveness. In the event of a problem, it enables rapid location and tracing of the cause.

[0018] Furthermore, it also includes a communication module and a user terminal. The controller is connected to the user terminal network through the communication module. The controller is also used to send the water quality parameters measured by the lyrics and the detection time to the user terminal through the communication module.

[0019] The controller connects to the user terminal network via a communication module, transmitting measured water quality parameters and detection times to the user terminal in real time. Users can remotely monitor the wastewater treatment process through the terminal, improving management efficiency. Data sharing is also facilitated, enabling multi-party collaboration and decision support. Attached Figure Description

[0020] Figure 1 is a logic block diagram of an embodiment of a drainage system for a coal processing plant according to the present invention, including a wastewater treatment unit.

[0021] Figure 2 is a structural block diagram of an embodiment of a drainage system for a coal processing plant according to the present invention, including a wastewater treatment unit. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method:

[0023] The basic implementation method is shown in Figure 1:

[0024] A drainage system for a coal processing plant includes a wastewater treatment unit, a final treated effluent tank, a sampling and detection unit, a diversion actuator, and a controller. The sampling and detection unit includes a sampling module and a water quality detection unit. The final treated effluent tank is connected to the wastewater treatment unit and is used to store the treated coal processing wastewater. The sampling module is used to collect coal processing wastewater samples from the final treated effluent tank. The water quality detection unit is used to detect water quality parameters in the coal processing wastewater samples, including COD, ammonia nitrogen, cyanide, heavy metals, suspended solids, and pH value. The diversion actuator includes a drain solenoid valve and a return pump. The drain solenoid valve is connected to a drain outlet, and the return pump is connected to the wastewater treatment unit. The output of the water quality detection unit is electrically connected to the input of the controller. The output of the controller is electrically connected to the inputs of the drain solenoid valve and the return pump, respectively. The controller is used to control the opening and closing of the drain solenoid valve and the return pump according to the water quality parameters of the unprocessed wastewater. In this embodiment, the controller is specifically a PLC controller, the sampling module is specifically a sampling pump, and the water quality detection unit includes a Hach COD analyzer for detecting COD; an Amtax SC200 ammonia nitrogen analyzer for detecting ammonia nitrogen; an HD-TCN cyanide analyzer for detecting cyanide; a Hach XOS heavy metal analyzer for detecting heavy metals; a CUS71D suspended solids sensor for detecting suspended solids; and a pH sensor for detecting pH value. All solenoid valves in this embodiment are ASCO 327 series corrosion-resistant solenoid valves.

[0025] The sampling and detection unit is responsible for collecting water samples from the final treated effluent pool and detecting the water quality parameters. When the detected water quality parameters meet the standards, the solenoid valve is opened to discharge the treated wastewater. If any water quality parameters are found to be substandard, the return pump is turned on to return the wastewater to the treatment unit for further treatment.

[0026] By sampling and testing, the quality of treated water can be quickly understood, and drainage or recirculation can be automatically adjusted according to water quality parameters to ensure that wastewater meets discharge standards or is retreated, thereby reducing the direct discharge of substandard wastewater and lowering the environmental pollution rate.

[0027] It also includes a liquid level sensor, the output of which is electrically connected to the input of the controller, for detecting the liquid level in the final treated effluent tank. The output of the controller is also electrically connected to the input of the sampling module, and the controller is also used to control the opening and closing of the sampling module according to the liquid level in the final treated effluent tank.

[0028] A level sensor detects the liquid level in the final treated water tank and transmits this information to the controller. The controller then controls the activation and deactivation of the sampling module based on the liquid level, preventing invalid sampling when the liquid level is too low or there is no water. Liquid level monitoring ensures that the sampling module operates at the appropriate time, reducing resource waste and preventing system misjudgments or malfunctions caused by invalid sampling.

[0029] The wastewater treatment unit includes an advanced oxidation treatment unit, a chemical precipitation unit, a biological treatment unit, and an air flotation treatment unit. The passage of the advanced oxidation treatment unit is equipped with a first reflux solenoid valve, the passage of the chemical precipitation unit is equipped with a second reflux solenoid valve, the passage of the biological treatment unit is equipped with a third reflux solenoid valve, and the passage of the advanced oxidation treatment unit is equipped with a fourth reflux solenoid valve. The output terminal of the controller is also electrically connected to the output terminals of the first, second, third, and fourth reflux solenoid valves, respectively. The controller is also used to control the opening and closing of the first, second, third, and fourth reflux solenoid valves according to water quality parameters.

[0030] The wastewater treatment unit is subdivided into advanced oxidation treatment, chemical precipitation, biological treatment, and flotation treatment units. Each unit's pathway is equipped with reflux solenoid valves (first, second, third, and fourth reflux solenoid valves). The controller regulates the opening and closing of these valves based on water quality parameters to achieve wastewater reflux and retreatment. Through subdivided treatment units and reflux control, more precise treatment of specific pollutants can be achieved, ensuring the effective removal of various pollutants from the wastewater and improving effluent quality.

[0031] It also includes an alarm module, the output of which is electrically connected to the input of the alarm module. The controller is also used to control the alarm module to issue an early warning based on water quality parameters. In this embodiment, the alarm module is specifically a buzzer.

[0032] When water quality parameters exceed preset ranges, the controller activates the alarm module to issue a warning signal. This alarm module enables timely detection and response to water quality anomalies, preventing potential environmental risks and improving the safety and reliability of the wastewater treatment process.

[0033] It also includes a storage module, the output of which is electrically connected to the input of the storage module. The storage module is used to store the measured water quality parameters and the detection time. In this example, the storage module is a ROM read-only memory.

[0034] The storage module records the water quality parameters and testing time for each test, facilitating subsequent analysis and traceability. It provides a complete historical record of water quality testing, aiding in the analysis and evaluation of wastewater treatment effectiveness. In the event of a problem, it enables rapid location and tracing of the cause.

[0035] It also includes a communication module and a user terminal. The controller is connected to the user terminal network through the communication module. The controller is also used to send the water quality parameters measured by the lyrics and the detection time to the user terminal through the communication module.

[0036] The controller connects to the user terminal network via a communication module, transmitting measured water quality parameters and detection times to the user terminal in real time. Users can remotely monitor the wastewater treatment process through the terminal, improving management efficiency. Data sharing is also facilitated, enabling multi-party collaboration and decision support.

[0037] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A drainage system for a coal processing plant, comprising a wastewater treatment unit, characterized in that: It also includes a final treated effluent tank, a sampling and detection unit, a diversion actuator, and a controller. The sampling and detection unit includes a sampling module and a water quality detection unit. The final treated effluent tank is connected to the wastewater treatment unit and is used to store the treated coal processing wastewater. The sampling module is used to collect coal processing wastewater samples from the final treated effluent tank. The water quality detection unit is used to detect water quality parameters in the coal processing wastewater samples, including COD, ammonia nitrogen, cyanide, heavy metals, suspended solids, and pH value. The diversion actuator includes a drain solenoid valve and a return pump. The drain solenoid valve is connected to the drain outlet, and the return pump is connected to the wastewater treatment unit. The output of the water quality detection unit is electrically connected to the input of the controller. The output of the controller is electrically connected to the input of the drain solenoid valve and the return pump, respectively. The controller is used to control the opening and closing of the drain solenoid valve and the return pump according to the water quality parameters of the coal processing wastewater.

2. The drainage system for a coal processing plant according to claim 1, characterized in that: It also includes a liquid level sensor, the output of which is electrically connected to the input of the controller, for detecting the liquid level in the final treated effluent tank. The output of the controller is also electrically connected to the input of the sampling module, and the controller is also used to control the opening and closing of the sampling module according to the liquid level in the final treated effluent tank.

3. A drainage system for a coal processing plant according to claim 1, characterized in that: The wastewater treatment unit includes an advanced oxidation treatment unit, a chemical precipitation unit, a biological treatment unit, and an air flotation treatment unit. The passage of the advanced oxidation treatment unit is equipped with a first reflux solenoid valve, the passage of the chemical precipitation unit is equipped with a second reflux solenoid valve, the passage of the biological treatment unit is equipped with a third reflux solenoid valve, and the passage of the advanced oxidation treatment unit is equipped with a fourth reflux solenoid valve. The output terminal of the controller is also electrically connected to the output terminals of the first, second, third, and fourth reflux solenoid valves, respectively. The controller is also used to control the opening and closing of the first, second, third, and fourth reflux solenoid valves according to water quality parameters.

4. A drainage system for a coal processing plant according to claim 1, characterized in that: It also includes an alarm module, the output of which is electrically connected to the input of the alarm module. The controller is also used to control the alarm module to issue an early warning based on water quality parameters.

5. A drainage system for a coal processing plant according to claim 1, characterized in that: It also includes a storage module, the output of which is electrically connected to the input of the storage module. The storage module is used to store the measured water quality parameters and the detection time.

6. A drainage system for a coal processing plant according to claim 1, characterized in that: It also includes a communication module and a user terminal. The controller is connected to the user terminal network through the communication module. The controller is also used to send the water quality parameters measured by the lyrics and the detection time to the user terminal through the communication module.

Images