To solve the problem of inaccurate liquid level in high salt wastewater evaporators, we can start from the following aspects:

      1. Check the automatic liquid level control system

      one System check:

      Firstly, check if there are any faults or errors in the automatic liquid level control system.

      If there is a problem with the system, it can be changed to manual control mode for more accurate observation and adjustment of the liquid level.

      two Calibration and Debugging:

      Calibrate the liquid level gauge to ensure its measurement accuracy.

      Select the appropriate type of liquid level gauge based on process conditions and parameters to improve measurement accuracy.

    II. Optimize evaporator operating conditions

      one Control heat load:

      The change in heat load inside the evaporator will affect the fluctuation of liquid level. Therefore, the heat load should be strictly controlled to maintain stability.

      The heat load can be controlled by adjusting the heat transfer area, heat transfer coefficient, or evaporation rate.

      two Stable liquid intake:

      The instability of liquid intake can also lead to fluctuations in liquid level. Therefore, the stability of the liquid intake should be ensured.

      The liquid inlet can be stabilized by adjusting the performance of the feed pump, pipeline flow rate, and other methods.

      three Monitoring liquid properties:

      Changes in liquid concentration and temperature can also affect the liquid level. Therefore, changes in liquid properties should be strictly monitored.

      Real time monitoring of changes in liquid concentration and temperature can be achieved by installing monitoring devices such as online concentration meters and thermometers, in order to adjust operating conditions in a timely manner.

      III. Solve the problem of evaporator scaling and foam

      one Preventing scaling:

      High salt wastewater often contains salts with low solubility, which are prone to scaling after evaporation and concentration. Therefore, measures should be taken to prevent scaling.

      Pre treatment can be used to remove some insoluble salts, add seed crystals to reduce solution supersaturation, optimize evaporator structure, and other methods to prevent scaling.

      two Eliminating foam:

      The evaporator may have foam problems during operation, which may affect the liquid level display and observation. Therefore, measures should be taken to eliminate foam.

      Defoamers and optimization of operating conditions (such as reducing evaporation temperature, increasing circulation, etc.) can be used to eliminate foam.

      Fourth, strengthen equipment maintenance and management

      one Regular inspection and maintenance:

      Regularly inspect and maintain the evaporator, including cleaning, tightening bolts, replacing seals, etc.

      Through regular inspection and maintenance, equipment failures and hidden dangers can be detected and dealt with in a timely manner, ensuring stable operation of the equipment.

      two Establish management system:

      Establish a comprehensive equipment management system and operating procedures, clarify the requirements for equipment use, maintenance, and upkeep.

      Through institutionalized management, the management level and efficiency of equipment can be improved, and the occurrence of failures and accidents can be reduced.

      To solve the problem of inaccurate liquid level in the evaporator of high salt wastewater, it is necessary to start with automatic liquid level control system, evaporator operating conditions, scaling and foam problems, equipment maintenance and management, etc. Through comprehensive measures, the stable operation of the evaporator and accurate measurement of liquid level can be ensured.