Instrument Automation in Petrochemical Wastewater Treatment Process
Time:2022-11-22 Read:731
Reading guide: If the wastewater from petrochemical production is not treated, it will inevitably pollute the environment and affect the safety and environmental protection of petrochemical enterprises. The instrument automation of the petrochemical wastewater treatment process is studied to ensure the effect of wastewater treatment. The wastewater treatment process is monitored and managed to achieve the goal of automatic control and management.

In the process of petrochemical wastewater treatment, the application of automation instrument can monitor various liquid levels, pressure, flow, dissolved oxygen, sludge content, and other data in real-time to provide reliable data information for improving the quality of wastewater treatment. 

Instrument series in petrochemical wastewater treatment

In the wastewater treatment of petrochemical production, the automatic instrument system is optimized to meet the needs of petrochemical production. The application of various thermal instruments and component analysis instruments can monitor the process of wastewater treatment in real time, improve the standard of wastewater purification and treatment, and create favorable conditions for the reuse of petrochemical wastewater.

The thermal instrument series mainly consists of various temperature transmitters, pressure transmitters, and flow transmitters. The temperature, pressure, liquid level, flow, and other parameters are displayed by the terminal equipment through the on-site measuring elements and the transmission medium in the middle to provide basic data for analyzing the status of the petrochemical wastewater treatment process.

The composition analysis instrument mainly uses online analysis to determine the water quality composition of sewage. The application of dissolved oxygen analyzer, COD analyzer, BOD analyzer, etc. is limited to the composition analysis of certain media. To provide a basis for petrochemical wastewater treatment, and ensure that the water quality of wastewater purification reaches the standard, online analytical instruments are used to timely analyze the water quality characteristics of the treated wastewater, so as to provide the most direct data information to improve the efficiency of petrochemical wastewater treatment.

The application of a PLC automatic control module ensures the real-time measurement of production and operation parameters of the petrochemical wastewater treatment process and improves the intelligent management level of petrochemical wastewater treatment through the application of various electronic components. The automatic control instrument system can automatically control the process of sewage treatment. Once a link fails, the automatic control instrument will automatically switch the process flow to avoid tank overflow, leakage, and other accidents, and ensure the safety of petrochemical sewage treatment production.

petrochemical wastewater treatment

Instrument automation in the petrochemical wastewater treatment process

Automate various instruments in petrochemical wastewater treatment, establish a perfect automatic control system, improve the intelligent management level of petrochemical wastewater treatment, continuously improve the efficiency of petrochemical wastewater treatment, reduce the cost of petrochemical wastewater treatment, and greatly improve the safety factor of petrochemical wastewater treatment, so as to achieve the effect of waste utilization.

Significance of instrument automation in petrochemical wastewater treatment

In order to reasonably control the operation of various equipment in petrochemical wastewater treatment, the data obtained by various automatic instrument systems are interpreted and analyzed, the relationship between various production processes is coordinated, and various equipment and facilities are reasonably utilized. The operation parameters of the equipment are automatically adjusted through the detection value of the automatic control instrument to ensure the smooth operation of the sewage treatment process and achieve the desired treatment effect.

The automatic instrument system can implement an automatic alarm design to achieve the effect of early warning. Ensure the safety of the petrochemical wastewater treatment process, avoid serious safety accidents, and affect the benefits of petrochemical production. There are safety risks in petrochemical production. Various automatic control instrument systems are used to monitor and manage safety risk sources and improve the safety and environmental protection of petrochemical wastewater treatment. Instrument automation plays a very important role in the petrochemical wastewater treatment process. 

Combined with the application of computer technology, it can gradually realize the intellectualization of petrochemical production, improve the automation degree of petrochemical production, reduce the failure rate of petrochemical production, continuously improve the economic benefits of petrochemical production, and meet the economic requirements of petrochemical enterprises.

Instrument Automation in Petrochemical Wastewater Treatment Process

Automation of temperature measuring instruments

In the petrochemical wastewater treatment process, the temperature test of wastewater requires the application of various temperature-measuring instruments. The thermal resistance temperature measuring instruments and thermocouple temperature measuring instruments are preferred to obtain the temperature data of each link in the wastewater treatment process, providing a basis for reasonable control of the temperature data in the production process. Temperature determines the quality of sewage treatment. If the sewage in petrochemical production is discharged at will, it will inevitably lead to serious environmental pollution accidents. It is the best choice for petrochemical wastewater treatment to strengthen the treatment of petrochemical wastewater to make its water quality meet the quality standard of reuse or discharge and be reused.

The temperature transmitter shall be used to remotely transmit the temperature data measured on-site, so as to convert the thermal signal into an electrical signal. The secondary instrument shall be used to display and output, and the automatic instrument system of petrochemical production shall be combined to implement the automatic control function. Automatically adjust the temperature of sewage to meet the needs of the sewage treatment process. 

The automation of temperature measuring instruments can sense the temperature of sewage in real-time, providing the best data information for removing toxic and harmful components in sewage. If the water temperature is too high, it will lead to a waste of heat energy. If the water temperature is too low, it cannot achieve the treatment effect. Through the application of temperature transmitters, various automatic control instrument systems are interlocked to reasonably adjust the temperature of each process of sewage treatment and improve the effect of sewage treatment.

The collection and processing of temperature data, through the automatic instrument system of petrochemical wastewater treatment, analyzes the temperature changes in each process link, realizes remote regulation and management, and avoids affecting the effect of wastewater treatment due to temperature rise or fall. According to the automation of temperature measuring instruments, the petrochemical wastewater treatment process is optimized, and heat exchange treatment measures are implemented to reduce the loss of heat energy and utilize the residual heat, so as to reduce the cost of petrochemical production and continuously improve the economic benefits of petrochemical production.

Automation of pressure measuring instruments

Pressure data is the key data of petrochemical wastewater treatment. The precision of pressure measurement directly affects the safety of the petrochemical wastewater treatment process. Therefore, it is necessary to detect the pressure of each treatment device to prevent accidents of pressure vessels and ensure the smooth operation of the treatment process. For example, the application of a pressure filter tank can maintain a sufficient filtering effect and avoid high pressure in the tank, which will affect the separation and treatment effect of mechanical impurities in sewage.

Various pressure-measuring instruments shall be optimized. Combined with the measurement of the pressure gauge, a pressure transmitter shall be selected and applied to improve the accuracy of pressure measurement and meet the pressure requirements of the petrochemical wastewater treatment process. The pressure measurement is combined with the petrochemical wastewater production process. When the pressure exceeds the design pressure data, the emergency treatment program is started immediately, and the pressure relief treatment is implemented by opening the outlet valve. If the pressure of the container is too low, turn down the outlet valve or turn up the inlet valve to maintain sufficient pressure on the container so that it can operate efficiently and continuously improve the efficiency of sewage treatment.

Instrument Automation

Automation of flow measuring instruments

The flow detection can determine the quantity of water at the inlet and outlet of the sewage treatment plant and the return flow of sewage, improve the accuracy of flow detection instruments, ensure the flow measurement in petrochemical sewage treatment, such as the application of ultrasonic flowmeter and differential pressure flowmeter, and meet the needs of sewage treatment. Give full play to the advantages of various sewage treatment equipment, improve the safe operation efficiency of the equipment, and ensure that the efficiency of sewage treatment reaches the ideal state.

In order to better control the flow of sewage, promote the improvement of sewage treatment effect, ensure the sewage treatment capacity, and provide the most reliable sewage treatment program for petrochemical production, the sewage treatment capacity shall be increased as much as possible according to the treatment capacity of the equipment. Prevent the occurrence of poor water treatment effects caused by excessive flow, which will affect the smooth implementation of the petrochemical wastewater treatment process.

Automation of liquid-level measuring instruments

The detection and control of the liquid level is a measure to ensure the safe operation of the vessel. The liquid level gauge and the float level controller are used to timely reflect the liquid level of the pressure vessel, and the petrochemical wastewater treatment process is reasonably adjusted to ensure the optimal treatment capacity. Research and apply liquid level transmitters to monitor the change of liquid level in real-time. If the liquid level is too high and exceeds the set value, automatically discharge the fluid, keep the liquid level of the container at the best position, and promote the progress of the sewage treatment process. The high and low liquid levels shall be treated in real time to prevent tank-blowing accidents during petrochemical wastewater treatment, which will affect the safety of petrochemical wastewater treatment.

Automation of online analyzer

The application of various online analytical instruments can solve the detection problems of oxygen content, BOD, and COD indicators in petrochemical wastewater treatment. The chemical oxygen demand is analyzed, and the composition of the treated sewage is analyzed online to ensure that the quality of sewage reaches the standard. For example, the wastewater from the oil refining and catalytic cracking process is treated, reused, used as circulating water, and heat energy is exchanged through the heat exchanger to reduce the wastewater heat energy consumption.

For example, the adoption of aerobic or anaerobic microbial treatment technology measures and optimization of the automation of online analytical instruments can ensure the effect of microbial treatment and achieve the best standard. Analyze the change of oxygen content in sewage, and define the standard of sewage treatment. Set the online analyzer, design and use the automatic instrument system according to the standard production process design, ensure various online instrument metering, obtain real-time data, and provide the best technical support for improving the petrochemical wastewater treatment measures.

Conclusion

Through the research of instrument automation in the petrochemical wastewater treatment process, the effect of petrochemical wastewater treatment can be improved and the environmental pollution accidents caused by petrochemical production can be avoided. Continuously improve the efficiency of petrochemical production, purify and treat production wastewater to make it reach the standard of reuse, so as to reduce the cost of petrochemical production, achieve green production and operation conditions, and promote the progress of petrochemical production.