Method for cracking sludge through ultrasonic coupling Fenton oxidation

The invention relates to a method for cracking sludge through ultrasonic coupling Fenton oxidation. Firstly, the pH value of a sludge system is regulated to 2.5 to 3.5 by diluted hydrochloric acid, then, ultrasonic waves and Fenton oxidation are adopted for simultaneously cracking a sludge system, the ultrasonic wave frequency is 20 to 40 kHz, and the ultrasonic sound energy density is 50 to 125 W/L; the simultaneous cracking time of the ultrasonic waves and Fenton oxidation on the sludge system is 0.25 to 1 hour, the sludge cracking effect is improved, and compared with non-enhanced Fenton oxidation treatment, the ultrasonic coupling Fenton oxidation has the advantages that the specific resistance of the sludge and the capillary water absorption time are greatly reduced. The method for cracking sludge through ultrasonic coupling Fenton oxidation has the advantages that the fetor control effect is obvious, and the Fe addition quantity and the H2O2 addition quantity are greatly reduced, so the treatment co