Water treatment device and system and water treatment method

Abstract

The invention relates to a water treatment device and system and a water treatment method. The device comprises an ultrasonic transducer and a thin-layer treatment chamber, wherein the thin-layer treatment chamber is provided with a first cover plate, a second cover plate and a tapered and gradually-enlarged flow channel; the tapered and gradually-enlarged flow channel is provided with one or morevalves; liquid is remained between the first cover plate and the second cover plate; a radiation surface of the ultrasonic transducer is fixed on the first cover plate; the ultrasonic transducer is used for emitting ultrasonic waves; the thin-layer treatment chamber is used for receiving the ultrasonic waves and generating ultrasonic cavitation; the tapered and gradually-enlarged flow channel isused for generating hydraulic cavitation; the hydraulic cavitation and the ultrasonic cavitation are coupled to grenade coupling cavitation; the coupling cavitation is used for treating water. According to the water treatment device provided by the invention, the washing groove type ultrasonic transducer is adopted and the diameter of the radiation surface is greater than that of a piezoelectric sheet, so that the device has the advantages of low price, stability in working and strong adaptability; a large radiation area covers a coupling region and an external region with an independent ultrasonic effect, so that wastes of ultrasonic energy are avoided.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a water treatment device, system and water treatment method. Background technique [0002] Contemporary China is facing enormous pressure of environmental degradation while its economy is developing rapidly, among which the problem of water pollution is particularly serious, and the current situation is worrying. Traditional chemical sewage treatment technology will bring secondary pollution, and some organic substances that are difficult to degrade cannot be degraded by traditional methods, or even if they can be degraded, the cost is very high. The physical method of sewage treatment will not produce secondary pollution, and it is a green water treatment technology. Cavitation sewage treatment technology is a physical method of sewage treatment technology. It uses the cavitation effect to generate high temperature and high pressure inside the cavity, and the hydroxyl radicals ge...

AI Technical Summary

Problems solved by technology

In the prior art, although there is a structure similar to the Venturi tube, the coupling of ultrasonic cavitation and hydraulic cavitation inside the Venturi tube cannot be realized. Generally, the hydraulic cavitation that occurs inside the Venturi tube-shaped flow channel generally occurs in the However, because the Venturi tube is generally a circular tubular structure, the hydraulic cavitation cloud formed is a ring structure. It is difficult to achieve the coupling of ultrasonic cavitation and hydraulic cavitation by traditional methods. We use thin-layer Venturi The inner pipe and the control of the water flow rate through the valve can solve this problem very well

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