Treatment device and treatment method for high-salt refractory wastewater

A treatment device, a refractory technology, applied in water/sewage treatment, special compound water treatment, illumination water/sewage treatment, etc., can solve the problem of inability to use high voltage, achieve non-selective degradation, improve catalytic degradation efficiency, Strong oxidizing power

Active Publication Date: 2021-01-08
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this invention, there is a current breakdown phenomenon in the photoelectrode, so high voltage cannot be used, which has limitations for the treatment of ultra-high concentration wastewater

Method used

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  • Treatment device and treatment method for high-salt refractory wastewater
  • Treatment device and treatment method for high-salt refractory wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Treatment of resin regeneration wastewater in a chemical water production workshop of a thermal power plant: the catalytic anode uses titanium-based IrO 2 Coated electrode, the cathode is made of stainless steel electrode, the distance between the plates is 5 cm, and the current density is 2.5mA / cm 2 , the ultraviolet lamp tube 7 is perpendicular to the horizontal plane, the distance between two adjacent ultraviolet lamps is 50 cm, the wavelength of ultraviolet light emitted by the ultraviolet lamp is 100 nm, the parallel and vertical distances of the ultrasonic transducers on each surface of the stainless steel cathode are equal, which is 20 cm, and the ultrasonic frequency is adjusted The range is 200KHZ; the ultrasonic sound intensity adjustment range is 10W / cm 2 ; The residence time of waste water in the oxidation reaction tank is 15 minutes.

[0066] The influent COD is 80mg / L, the conductivity is 25000μs / cm; the effluent COD is 28mg / L, the conductivity is 24800μs...

Embodiment 2

[0068] The treatment device and method provided by the present invention are used to treat the production wastewater of an aniline workshop in a chemical plant: wherein the catalytic anode adopts titanium-based PbO 2 Coated electrode, the cathode is made of stainless steel electrode, the distance between the plates is 5 cm, and the current density is 50mA / cm 2 , the ultraviolet lamp tube 7 is perpendicular to the horizontal plane, the distance between two adjacent ultraviolet lamps is 20 cm, the wavelength of ultraviolet light emitted by the ultraviolet lamp is 50 nm, the parallel and vertical distances of the ultrasonic transducers on each surface of the stainless steel cathode are equal, which is 10 cm, and the ultrasonic frequency is adjusted The range is 600KHZ; the ultrasonic sound intensity adjustment range is 100W / cm 2 ; The residence time of waste water in the oxidation reaction tank is 120 minutes.

[0069] The influent COD is 4800mg / L, the conductivity is 65000μs / cm...

Embodiment 3

[0071] The biochemical effluent of certain acrylic fiber wastewater is treated by using the treatment device and method provided by the present invention: wherein the catalytic anode adopts titanium-based PbO 2 Coated electrode, the cathode is made of stainless steel electrode, the distance between the plates is 10 cm, and the current density is 25mA / cm 2 , the ultraviolet lamp tube 7 is horizontal to the horizontal plane, the distance between two adjacent ultraviolet lamps is 25 cm, the wavelength of ultraviolet light emitted by the ultraviolet lamp is 200 nm, the parallel and vertical distances of the ultrasonic transducers on each surface of the stainless steel cathode are equal, which is 15 cm, and the ultrasonic frequency is adjusted The range is 800KHZ; the ultrasonic sound intensity adjustment range is 50W / cm 2 ; The residence time of waste water in the oxidation reaction tank is 60 minutes.

[0072]The influent COD is 320mg / L, the conductivity is 12800μs / cm; the efflu...

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Abstract

The invention relates to a device and method for treating high-salt refractory wastewater. The device comprises at least one group of a catalytic anode and a cathode. The catalytic anode and cathode are alternately arranged in parallel. A distance between the catalytic anode and cathode is 5-10cm. The catalytic anode is connected to a positive electrode of an electrolysis power source through a lead. The cathode is connected to a negative electrode of the electrolysis power source through a lead. At least two transducers are fixed to the surface of the cathode and each surface of the cathode is provided with at least one transducer. The transducers are connected to the power source through leads. An ultraviolet lamp is arranged in the middle of the catalytic anode and cathode and the direction of the ultraviolet lamp is parallel to or perpendicular to the plane. The device can produce the synergistic oxidation effect on the organic matter, clean the electrolysis cathode and ultraviolet lamp, guarantee smooth electrolytic catalytic oxidation and ultraviolet oxidation, promote the mass transfer and rate of .OH and organic matters, improve oxidation efficiency and reduce a treatment cost.

Description

technical field [0001] The invention relates to a treatment device and a treatment method for high-salt refractory wastewater, belonging to the technical field of wastewater treatment. [0002] technical background [0003] With the rapid development of modern industry, the industrial wastewater produced not only increases in water volume, but also develops towards the trend of complex composition and high content of inorganic salts. At present, most of the industrial wastewater treatment processes at home and abroad adopt economical biological methods for treatment. However, with the increasingly stringent discharge standards in various places, it is difficult to meet the discharge targets only by biochemical treatment, especially high-salt and refractory wastewater. Require. [0004] The treatment of high-salt and refractory wastewater is a hot research topic of domestic and foreign scholars in recent years. In order to achieve a higher treatment depth, physical adsorptio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/36C02F1/32C02F101/20
CPCC02F1/32C02F1/36C02F1/4672C02F2001/46142C02F2101/20C02F2201/32C02F2305/023C02F2305/10
Inventor 邹宗海李波刘婷婷潘咸峰
Owner CHINA PETROLEUM & CHEM CORP
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