Circulating overflow type electric assisted ozone water treatment equipment as well as method for treating water thereby

Abstract

The invention provides circulating overflow type electric assisted ozone water treatment equipment as well as a method for treating water thereby. The equipment comprises a homogenous reactor, an electrochemical reaction device and an ozone generator, wherein the homogenous reactor and the electrochemical reaction device are mutually connected and form a circulating path; a cathode and an anode which are parallel with each other and are water-permeable and air-permeable are arranged in the electrochemical reaction device, and divide the internal space into a lower chamber positioned below thecathode, an upper chamber positioned above the anode and a middle chamber positioned between the two electrodes; the edges of the two electrodes and the inner wall of the electrochemical reaction device are in a sealed state; the water inlet end of the lower chamber is connected with the water outlet end of the homogenous reactor; the water outlet end of the upper chamber is connected with the water inlet end of the homogenous reactor; and a gas dispersing device is arranged in the lower chamber and is connected with the ozone generator outside. The equipment provided by the invention improvesreaction system mass transfer, reduces pollution of ozone tail gas, enables a homogeneous reaction system and an electrode interface reaction system to obtain favorable conditions respectively, and is efficient and environmentally-friendly.

Description

technical field [0001] The invention belongs to the field of water treatment equipment, and in particular relates to a circulation-overflow electric-assisted ozone water treatment equipment, and also relates to a water treatment method using the equipment. Background technique [0002] Advanced oxidation is widely used in water treatment because the strong oxidizing free radicals generated during the reaction can easily degrade water pollutants. The coupling of electrochemical and ozone oxidation is a novel advanced oxidation water treatment technology with excellent treatment effect, simple operation, and low operating cost. It has potential advantages in the degradation and removal of organic pollutants in water. The cathode and anode reactions (or products) in the electrochemical reaction process are often the initiating reaction of the free radical reaction process of ozone-based technology, and the coupling of the two can often achieve the effect of synergistic degradat...

AI Technical Summary

Problems solved by technology

However, the traditional electrochemical reaction is often limited by the conductivity of the water body and the mass transfer of the system, and the treatment system is prone to dead angles and low efficiency.

In addition, the reaction rate of pollutants and ozonated gas on the surface of the electrode is limited by the effective area of ​​the electrode. It is difficult and costly to prepare a large-area high-performance electrode, and the size of the reactor will also increase.

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