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...

Examples

Embodiment 1

[0032] Circulating flow-type electro-assisted ozone water treatment equipment, see figure 1 , including a homogeneous reactor 1 and an electrochemical reaction device 3 connected to each other to form a circulation path, and an ozone generator 8; the electrochemical reaction device 3 is internally provided with parallel cathodes 4 and anodes that are all capable of permeating water and gas 5. Divide its internal space into a lower chamber 3-1 located below the cathode 4, an upper chamber 3-2 located above the anode 5, and an intermediate chamber 3-3 located between the two electrodes, and the two electrodes The edge is sealed with the inner wall of the electrochemical reaction device 3, the water inlet of the lower chamber 3-1 is connected with the water outlet of the homogeneous reactor 1, and the water outlet of the upper chamber 3-2 is connected with the outlet of the homogeneous reactor 1. The water inlet is connected, and the lower chamber 3-1 is provided with a gas dispe...

Embodiment 2

[0037] Circulating flow-type electro-assisted ozone water treatment equipment, see figure 2 , is basically the same as that of Embodiment 1, the only difference is that: a gas-liquid mixing device 9 and a water distributor 13 are also included. The water inlet / gas end of the tubular gas-liquid mixing device 9 is connected with the water outlet / gas end of the electrochemical reaction device 3; The water inlet and the gas end are connected; the water distributor 13 is placed in the lower chamber 3-1 of the electrochemical reaction device 3, below the gas dispersion device 7, so that the fluid energy entering the electrochemical reaction device 3 can be evenly distributed.

[0038] In the tubular gas-liquid mixing device 9, the gas-liquid mixture flowing out of the electrochemical reaction device 3 can be further mixed, so that the residual ozone gas can be fully absorbed and utilized, and the reaction system can be made uniform and the mass transfer of the reaction system can b...

Embodiment 3

[0040] Circulating flow-type electro-assisted ozone water treatment equipment, see image 3 , is basically the same as Embodiment 2, the only difference is that it also includes a liquid flow meter 14, a gas phase ozone concentration monitor 15, a gas flow meter 16, a check valve 17, a liquid phase ozone concentration sensor 18, and a dissolved oxygen concentration sensor 19 , the automatic control unit 20. The liquid flowmeter 14 is placed after the water outlet of the water pump 2, before the electrochemical reaction device 3; the gas phase ozone concentration monitor 15, the gas flowmeter 16, and the check valve 17 are connected successively after the ozone generator 8; The liquid phase ozone concentration sensor 18 and the dissolved oxygen concentration sensor 19 are placed on the side wall of the homogeneous reactor 1 . The automatic control unit 20 can receive the signals of the connected components, and then output the control signals, so as to control the circulating ...

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...

Examples

Embodiment 1

[0032] Circulating flow-type electro-assisted ozone water treatment equipment, see figure 1 , including a homogeneous reactor 1 and an electrochemical reaction device 3 connected to each other to form a circulation path, and an ozone generator 8; the electrochemical reaction device 3 is internally provided with parallel cathodes 4 and anodes that are all capable of permeating water and gas 5. Divide its internal space into a lower chamber 3-1 located below the cathode 4, an upper chamber 3-2 located above the anode 5, and an intermediate chamber 3-3 located between the two electrodes, and the two electrodes The edge is sealed with the inner wall of the electrochemical reaction device 3, the water inlet of the lower chamber 3-1 is connected with the water outlet of the homogeneous reactor 1, and the water outlet of the upper chamber 3-2 is connected with the outlet of the homogeneous reactor 1. The water inlet is connected, and the lower chamber 3-1 is provided with a gas dispe...

Embodiment 2

[0037] Circulating flow-type electro-assisted ozone water treatment equipment, see figure 2 , is basically the same as that of Embodiment 1, the only difference is that: a gas-liquid mixing device 9 and a water distributor 13 are also included. The water inlet / gas end of the tubular gas-liquid mixing device 9 is connected with the water outlet / gas end of the electrochemical reaction device 3; The water inlet and the gas end are connected; the water distributor 13 is placed in the lower chamber 3-1 of the electrochemical reaction device 3, below the gas dispersion device 7, so that the fluid energy entering the electrochemical reaction device 3 can be evenly distributed.

[0038] In the tubular gas-liquid mixing device 9, the gas-liquid mixture flowing out of the electrochemical reaction device 3 can be further mixed, so that the residual ozone gas can be fully absorbed and utilized, and the reaction system can be made uniform and the mass transfer of the reaction system can b...

Embodiment 3

[0040] Circulating flow-type electro-assisted ozone water treatment equipment, see image 3 , is basically the same as Embodiment 2, the only difference is that it also includes a liquid flow meter 14, a gas phase ozone concentration monitor 15, a gas flow meter 16, a check valve 17, a liquid phase ozone concentration sensor 18, and a dissolved oxygen concentration sensor 19 , the automatic control unit 20. The liquid flowmeter 14 is placed after the water outlet of the water pump 2, before the electrochemical reaction device 3; the gas phase ozone concentration monitor 15, the gas flowmeter 16, and the check valve 17 are connected successively after the ozone generator 8; The liquid phase ozone concentration sensor 18 and the dissolved oxygen concentration sensor 19 are placed on the side wall of the homogeneous reactor 1 . The automatic control unit 20 can receive the signals of the connected components, and then output the control signals, so as to control the circulating ...

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