Ultrasonic coupling photoelectric Fenton activated persulfate water treatment system and water treatment method

A technology for activating persulfate and water treatment systems, which is applied in the field of water treatment and can solve problems such as no reports

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

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Problems solved by technology

[0005] However, there is no report on the organic combination of ultrasonic catalytic technology, photocatalytic technology, persulfate advanced oxidation technology and electro-Fenton technology.

Method used

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  • Ultrasonic coupling photoelectric Fenton activated persulfate water treatment system and water treatment method

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Experimental program
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Effect test

Embodiment 1

[0078] In this embodiment 1, the anode adopts a boron-doped diamond electrode (BDD electrode), and the cathode selects a graphite electrode, and the preparation method of the boron-doped diamond electrode is as follows:

[0079] 1.1 Substrate material pretreatment

[0080] Firstly, the foamed SiC ceramic sample was cut into a 5 mm thick sheet sample, and then the SiC substrate was immersed in acetone (CH 3 COCH 3 ), absolute ethanol (C 2 h 5 OH) for 10 minutes of ultrasonic oscillation; then place the SiC substrate in nano-diamond suspension and ultrasonically plant the seed crystal for 30 minutes to enhance the nucleation. Finally, rinse with deionized ultrapure water and dry for use.

[0081] 1.2BDD film deposition

[0082] The hot wire used in this paper is The straight tungsten wire is used to completely cover the straight wire directly above the substrate, and then the pretreated substrate is put into the cavity of the HFCVD equipment, and the distance between the ...

Embodiment 2

[0094] The above system is used to treat an actual chemical and pharmaceutical wastewater. The composition of the water is complex, including antibiotic residues, antibiotic intermediates, unreacted raw materials, organic solvents, etc. Treat 1 L of water samples, wherein the particle filter plate is selected from a PP cotton filter plate, control the water temperature in the degradation tank to be 25° C., set 3 groups of counter electrodes in the degradation tank, and wherein the anode adopts a commercially available boron-doped diamond electrode ( BDD electrode), the substrate of the boron-doped diamond electrode is a silicon wafer, and the cathode B is a graphite electrode; the distance between each group of electrodes is 10mm, and the current density is 50mA cm -2 , the concentration of ferrous sulfate in Fenton's solution is 5mM, the concentration of sodium persulfate is 5mM, the pH value is adjusted to 3.5 with sulfuric acid, and the intensity of ultraviolet light is 50MJ...

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Abstract

The invention discloses an ultrasonic coupling photoelectric Fenton activated persulfate water treatment system and a water treatment method. The water treatment system comprises a liquid storage tank, a particle filtering plate, a degradation tank, a pH adjusting module and a microbiological treatment module; the degradation tank comprises an electro-Fenton reactor, an ultraviolet lamp, a photocatalyst, an ultrasonic generator and a persulfate feeder; wherein the electro-Fenton reactor comprises an anode, a cathode and a ferrous salt, and the ultraviolet lamp directly irradiates the anode andthe cathode; the photocatalyst is loaded on the surface of the anode or the surface of a porous material and is distributed around the anode; and ultrasonic probes in the ultrasonic generator are arranged around the cathode and the anode. According to the invention, ultrasonic catalysis, photocatalysis, persulfate oxidation and electro-Fenton are organically combined, so that the disadvantages oflow current efficiency and slow degradation rate of the traditional electro-Fenton technology are solved, and the synergistic effect among various technologies is achieved.

Description

technical field [0001] The invention relates to an ultrasonic coupled photoelectric Fenton activated persulfate salt water treatment system and a water treatment method, belonging to the technical field of water treatment. Background technique [0002] The situation of water pollution is becoming more and more serious, which has brought a huge threat to the health of the ecosystem and the sustainable development of human society. According to the survey of the world authoritative organization, with the rapid development of modern social economy and the overall progress of science and technology, tens of thousands of tons of complex man-made organic chemicals are consumed and discharged into the water environment every year around the world to become environmental organic pollutants. . Some organic pollutants are highly toxic, difficult to biodegrade, and exhibit high toxicity characteristics even at trace levels, such as phenols, polycyclic aromatic hydrocarbons, anilines, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30C02F103/06C02F103/34
CPCC02F9/00C02F1/001C02F1/36C02F1/66C02F1/32C02F2305/10C02F3/34C02F1/46104C02F1/46109C02F1/725C02F1/4672C02F2001/46152C02F2001/46171C02F2001/46142C02F3/28C02F3/30C02F3/301C02F3/02C02F1/5281C02F2209/02C02F2209/06C02F2209/08C02F2209/22C02F1/722C02F1/56C02F1/54C02F1/5263C02F1/5236C02F2103/343C02F2103/06C02F2101/30Y02W10/37
Inventor 魏秋平马莉周科朝王立峰王宝峰施海平杨万林陈尹豪
Owner NANJING DAIMONTE TECH CO LTD
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