Research On Ultrasonic Assisting Online Back Flush Technology In Cartridge Filter

Aimed at the problems of regeneration of sintering wire filter element in cartridge filter, the research demonstrates the feasibility and advantage of the ultrasonic assisting back flush. The regeneration of sintering wire filter element in cartridge filter is studied and analyzed in the process of filter slurry through the established laboratory small flush filter device.Based on the analysis of a lot of experimental data from the laboratory experiment, determine he initial permeable pressure of filter cores , the property of filter and appropriate backwashing medium, and optimize operation parameters'range of backwashing experiment. But it is not ideal for the regenerative effect of the filter cores for repetitious cycles of filter and back flush in continuously running cartridge filter. Appending ultrasonic aggrandizes the effect of back flush. Ultrasonic cleaning can improve the effect of back flush through offline ultrasonic cleaning. The experiment determines: the time of appending ultrasonic is 15 min; chance of appending ultrasonic is in the middle of pulse back flush. Through the orthogonal experiment, the optimum operation parameter of ultrasonic assisting pulse back flush is: pulse number is 12, backwashing pressure is 0.6 MPa, and the time of appending ultrasonic is 15 min, ultrasonic frequency is 30kHz, ultrasonic power is 0.5kW. It is the ideal for the regenerative effect of the filter cores for repetitious cycles of filter and back flush in continuously running cartridge filter. Ultrasonic assisting pulse back flush has better regenerative effect than pulse back flush and can guarantee cartridge filter continuously runs. It is very significative to enhance the utilization efficiency of the filter and save the energy consumption.Finally carry on ultrasonic cleaning auxiliary online flush the theoretical research. Mechanism and types of filter cores contaminated is ascertained through comprehensive analysis. Based on the experimental study and comprehensive analysis on the water shearing theory, Shearing force is calculated. At last, through analyzing principle of ultrasonic cavitations, mechanism of ultrasonic cleaning and complexion of filter cores contaminated. The ultrasonic assisting pulse for industrial application provides a theoretical guidance.