Ultrasonic air floatation system

Abstract

The invention relates to an ultrasonic air floatation system, comprising an air floatation pool, an oil scraper and an ultrasonic generator, wherein an ultrasonic reaction zone is arranged at one side in the air floatation pool, a water outlet zone is arranged at the other side in the air floatation pool, a separation zone is arranged between the ultrasonic reaction zone and the water outlet zone, separators are fixedly mounted between the ultrasonic reaction zone and the separation zone, and between the separation zone and the water outlet zone, a water inlet is mounted on the air floatation pool at the lower part of the ultrasonic reaction zone, the oil scraper is mounted above the separation zone, a water outlet is mounted on the air floatation pool at the lower bottom part of the water outlet zone, an energy conversion plate is horizontally mounted in the ultrasonic reaction zone, multiple energy converters are mounted and uniformly distributed at the lower bottom surface of the energy conversion plate at intervals, the energy converters are connected with the ultrasonic generator arranged outside the air floatation pool through cables, a water inlet is arranged above the energy conversion plate, and a reinforced blending layer is arranged above the energy conversion plate. According to the ultrasonic air floatation system, an air dissolving system for dissolved air floatation is omitted, the disadvantages of traditional dissolved air floatation are overcome, the air floatation effect is good, and the controllability is strong; and with the specific ultrasonic demulsification effect, the ultrasonic air floatation system can be applicable to the separation of emulsion. The ultrasonic air floatation system is a novel technological integrated device which is compact in structure and efficient.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to an air flotation process for water treatment, in particular to an ultrasonic air flotation system. Background technique [0002] The air flotation process is a new technology of water treatment that is being deeply researched and promoted at home and abroad. Its basic principle is to generate a large number of tiny air bubbles by a certain method, so that it can adhere to the pollutant particles in the sewage and form a water with a density lower than that of water. Under the action of buoyancy, the gas-bearing flocs float up to the water surface to complete solid-liquid or liquid-liquid separation. The air flotation process is mainly used to remove fine suspended particles with a small specific gravity from sewage, such as emulsified oil, lanolin, fine fibers, pulp, microorganisms and other low-density solid (liquid) bodies, etc., and can be used for the concentration of sludge. ...

AI Technical Summary

Problems solved by technology

[0004] 1) Dissolved air method: the pump suction type directly sucks air from the water suction pipe, its suction volume is difficult to control, the water pump runs unstable with air, and the work efficiency is low; while the air compressor air supply method produces noise and oil pollution In addition, the requirements for self-control are also higher

[0005] 2) In terms of air dissolution equipment: filling the air dissolution tank with packing can increase the rate of dissolved air, but the packing is easy to block, especially for wastewater with a high concentration of suspended solids

[0006] 3) In terms of air release equipment: the size of the air bubbles released by the pressure reducing valve is large and uneven. When the pipeline is long, the air bubbles will be large and the phenomenon will be serious, which will affect the air flotation effect

[0008] At present, there are many studies on the demulsification of ultrasonic waves in the treatment of emulsion wastewater, but there is no research on the application of bubbles generated by ultrasonic cavitation.

Images