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Ultrasonic ozone coupled photoelectrocatalysis water treatment system and water treatment method

A water treatment system, photoelectric catalysis technology, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, special compound water treatment, etc.

Active Publication Date: 2020-09-11
NANJING DAIMONTE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the device emphasizes the deposition of heavy metal ions, and does not specifically treat organic molecules in the water, so that the water after the system's circulation treatment still needs to be treated twice to meet the sewage discharge standard.

Method used

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  • Ultrasonic ozone coupled photoelectrocatalysis water treatment system and water treatment method

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Experimental program
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Effect test

Embodiment 1

[0065] Treatment of Zn using the above system 2+ 1L of water with a content of 3000mg / L, wherein the particle filter plate is selected from a quartz sand filter plate, and the temperature of the water in the degradation tank is controlled at 40-60°C; the pH of the water is maintained at about 4; the electrochemical degradation module uses a processing unit , the anode and the cathode are composed of hollow porous cylindrical electrodes that are coaxial in the center but not in contact with each other. The stainless steel is used as the cathode, the boron-doped diamond electrode is used as the anode, the distance between the plates is 10mm, and the energizing voltage is 4V. The ultrasonic emission head is built in the hollow of the anode to provide ultrasonic waves that propagate outward from the porous part of the anode, and the ozone that is controlled to pass through is mainly around the anode, with g-C 3 N 4 The photocatalyst catalyst size is 0.1-1μm; after 120min, Zn 2+...

Embodiment 2

[0073] The anode is a gradient boron-doped electrode, and its preparation method is as follows:

[0074] In this embodiment 1, both electrode A and electrode B are boron-doped diamond electrodes (BDD electrodes), and the preparation method of boron-doped diamond electrodes is:

[0075] 1.1 Substrate material pretreatment

[0076] First, the cylindrical foam Ti is used as the substrate, and it is polished with 600#, 800#, and 1000# metallographic sandpaper; then the polished foam Ti substrate is immersed in acetone (CH 3 COCH 3 ), absolute ethanol (C 2 h 5 OH) in ultrasonic oscillation for 10 min; then the foamed Ti substrate was placed in the nano-diamond suspension and seed crystals were ultrasonically planted for 30 min to enhance nucleation. Finally, rinse with deionized ultrapure water and dry for use.

[0077] 1.2BDD film deposition

[0078] (1) The hot wire used in this paper is The straight tungsten wire is used to completely cover the straight wire directly abo...

Embodiment 3

[0089] Treat Ni with the above system 2+ 1L of water with a content of 2800mg / L, wherein the particle filter plate is selected from microporous Al with a porosity greater than 35PPI 2 o 3 Foam ceramic plate, control the water temperature in the degradation tank to be 50-60°C; the pH of the water is maintained at about 4; the electrochemical degradation module adopts a processing unit, the anode and the cathode are formed by a hollow porous cylinder with the center coaxial but not in contact with each other. The electrodes are composed of stainless steel as the cathode, boron-doped diamond electrodes as the anode, the distance between the plates is 12mm, and the energizing voltage is 6V. The ultrasonic emission head is built in the hollow of the anode to provide ultrasonic waves that propagate outward from the porous part of the anode, and the ozone that is controlled to pass through is mainly formed around the anode as TiO 2 / g -C 3 N 4 The size of the photocatalyst cataly...

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Abstract

The invention discloses an ultrasonic ozone coupled photoelectrocatalysis water treatment system and a water treatment method. The water treatment system comprises a liquid storage tank and a degradation tank; a particle filter plate is arranged at a water outlet of the liquid storage tank and the water outlet is connected to the degradation tank through a circulating pipeline, and the degradationtank comprises an electrochemical degradation module, an ultrasonic generation module, a photocatalytic degradation module and a gas control module; wherein the electrochemical degradation module iscomposed of a plurality of treatment units, any one treatment unit comprises an anode and a cathode, the anode is cylindrical or columned, the ultrasonic generation module comprises an ultrasonic emission head internally arranged in a hollow part of the anode, and the photocatalytic degradation module comprises a photocatalyst dispersed between the anode and the cathode; and the gas control modulecomprises a gas injection unit for injecting ozone into the degradation tank. According to the invention, efficient degradation of water is realized through cooperation of electrochemical catalysis,photocatalysis, ozone and ultrasound.

Description

technical field [0001] The invention relates to an ultrasonic ozone coupled electrocatalytic water treatment system and a water treatment method, belonging to the technical field of environmental protection water treatment. Background technique [0002] Heavy metal pollution has the characteristics of high toxicity and non-degradability. The organic water containing heavy metals produced in industrial production poses a great threat to the human living environment. In the traditional treatment of heavy metal sewage, the water is stored off-line first, and then treated step by step, which makes the heavy metal water treatment cost a lot, the treatment cycle is long, and the effect is often not ideal. At present, there are few systems using electrocatalysis to treat organic water containing heavy metal ions. [0003] Chinese invention patent CN201620358044.6 discloses a heavy metal hydroelectrodeposition circulation treatment system. The water treatment system of the inventi...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F1/30C02F1/36C02F1/461C02F1/467C02F1/50C02F1/78C02F1/72C02F101/30
CPCC02F9/00C02F1/4672C02F1/46109C02F1/36C02F1/78C02F1/725C02F1/30C02F1/50C02F1/001C02F1/66C02F2001/46152C02F2001/46142C02F2305/10C02F2305/02C02F2209/08C02F2101/30C02F2209/02Y02W10/37
Inventor 魏秋平周科朝马莉王宝峰王立峰施海平刘芳牡
Owner NANJING DAIMONTE TECH CO LTD
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