Double-frequency ultrasonic chemical reactor

Abstract

The invention discloses a double-frequency ultrasonic chemical reactor which is characterized by adopting a cylinder body structure and comprising an outer cylinder, an inner cylinder, a bottom plate, a lifting cylinder in the inner cylinder, a water inlet pipe and a water outlet arranged on the side wall of the outer cylinder, wherein a cover plate is arranged on the inner cylinder; two groups of ultrasonic transducers outside the cylinder body are respectively arranged on the cover plate and the bottom plate; one group of ultrasonic transducers consist of top high-frequency ultrasonic transducers and top low-frequency ultrasonic transducers, which are mutually spaced and uniformly distributed on the cover plate; and the other group of ultrasonic transducers consist of bottom high-frequency ultrasonic transducers and bottom low-frequency ultrasonic transducers, which are vertically and relatively arranged on the bottom plate. The invention effectively enhances the distribution uniformity of an ultrasonic acoustic field in the reactor, obviously increases the ultrasonic cavitation efficiency, prolongs the service life of equipment and can be applied to various industrial waste water, particularly to the degradation of high-concentrated organic waste water.

Description

technical field [0001] The invention relates to a wastewater treatment device, which belongs to the technical field of environmental protection equipment, in particular to a dual-frequency ultrasonic chemical reactor. Background technique [0002] With the acceleration of the industrialization process, more and more sewage is discharged from the production process of factories and mines in various industries, and urban water pollution is becoming more and more serious. In particular, the refractory high-concentration organic wastewater discharged from the chemical industry and printing and dyeing industry has complex components and high concentrations of organic matter, which puts forward higher requirements for treatment processes and equipment. As a physical means and tool, ultrasonic technology has unique advantages in the treatment of refractory organic polluted wastewater. Ultrasonic degradation of organic matter mainly utilizes acoustic cavitation. Acoustic cavitatio...

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Problems solved by technology

[0004] China's "Applied Acoustics" (2007, 26 (6) pages 362-366) used dual low-frequency ultrasonic waves to conduct experimental research on the simulated dye wastewater treatment, and achieved good results. The reactor used in the experiment was self-assembled For matching, an H66MC ultrasonic generator (frequency 26.5kHz, power 0-250W, ultrasonic probe diameter 4cm) is superimposed on the vertical surface of the HT-50 ultrasonic cleaning machine (frequency 40kHz, power 50W, ultrasonic probe diameter 5cm) , a simple combination of upper and lower parts, only two ultrasonic generators with different frequencies, the structure is too simple to meet the continuous and long-term requirements of actual wastewater treatment

[0005] The Chinese invention patent application with the application number 200410024548.6 proposes a "method for blowing off volatile pollutants in wastewater by dual-frequency ultrasonic waves", wherein the reactor used is an open container with two sets of ultrasonic transducers of different frequencies at the bottom of the vessel. But this is only a set of high-frequency transducers added to the bottom of the traditional single-frequency tank reactor, that is, two waves of ultrasonic waves of different frequencies are emitted upward from the bottom of the open container at the same level. The effect of dual-frequency ultrasound on the wastewater treatment effect does not involve the effect of dual-frequency ultrasonic coupling on the wastewater treatment effect, and the wastewater treatment effect of dual-frequency ultrasound cannot be maximized.

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