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Method and device for enhanced ozone oxidation wastewater treatment of ozone tail gas

An ozone oxidation and treatment device technology, applied in the direction of oxidized water/sewage treatment, etc., can solve the problems of exhaust gas damage and poor effect, and achieve the effect of strengthening the treatment effect.

Active Publication Date: 2013-09-18
BEIJING CYCLE COLUMBUS ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of poor effect of existing simple ozone oxidation and the need for destruction treatment of tail gas, the present invention proposes a method and device for ozone tail gas enhanced ozone oxidation wastewater treatment

Method used

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  • Method and device for enhanced ozone oxidation wastewater treatment of ozone tail gas
  • Method and device for enhanced ozone oxidation wastewater treatment of ozone tail gas
  • Method and device for enhanced ozone oxidation wastewater treatment of ozone tail gas

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The object of advanced treatment is coking wastewater after biological treatment, and the COD is about 150mg / L.

[0047] The waste water 10 first enters the pre-electrolysis unit for electrolysis reaction, and the electrolysis voltage is controlled to be 2V. The ozone tail gas 12 generated by the subsequent ozone reaction is simultaneously passed into the electrocatalytic reactor. The anode 2 uses a titanium-based ruthenium dioxide plate, and the cathode 3 is graphite felt. The aeration device 4 is a pure titanium aeration head. The wastewater 11 (containing hydrogen peroxide) after the electrolysis reaction is pumped into the ozone oxidation unit, and the ozone 13 is passed into the ozone oxidation reactor for reaction. The ozone 13 is ozone generated by an oxygen source, and the amount of ozone added is 100mg / L. The ozone tail gas 12 produced by the ozone oxidation unit is connected to the aeration device 4 in the pre-electrolysis unit. Finally, the effluent 14 of th...

Embodiment 2

[0049] The object of advanced treatment is the biologically treated wastewater from the production of zimycin, with a COD of about 300mg / L.

[0050] Wastewater 10 first enters the pre-electrolysis unit for electrolysis reaction, and the electrolysis voltage is controlled to 7V. The ozone tail gas 12 generated by the subsequent ozone reaction is simultaneously passed into the electrocatalytic reactor. The anode 2 is made of titanium-based titanium dioxide plate, and the cathode 3 is activated carbon and polytetrafluoroethylene. The powder electrode formed by bonding and pressing ethylene emulsion, and the aeration device 4 is a pure titanium aeration head. The wastewater 11 (containing hydrogen peroxide) after the electrolysis reaction is pumped into the ozone oxidation unit, and the ozone 13 is passed into the ozone oxidation reactor for reaction. The ozone 13 is ozone generated by an oxygen source, and the amount of ozone added is 200mg / L. The ozone tail gas 12 produced by th...

Embodiment 3

[0052] The object of advanced treatment is printing and dyeing wastewater after biological treatment, and the COD is about 250mg / L.

[0053] Waste water 10 first enters the pre-electrolysis unit for electrolysis reaction, and the electrolysis voltage is controlled to 4V. The ozone tail gas 12 generated by the subsequent ozone reaction is simultaneously passed into the electrocatalytic reactor. The anode 2 is made of titanium-based titanium dioxide plate, and the cathode 3 is activated carbon fiber. Device 4 is a silica gel aeration head. The wastewater 11 (containing hydrogen peroxide) after the electrolysis reaction is pumped into the ozone oxidation unit, and the ozone 13 is passed into the ozone oxidation reactor for reaction. The ozone 13 is ozone generated by an oxygen source, and the amount of ozone added is 150mg / L. The ozone tail gas 12 produced by the ozone oxidation unit is connected to the aeration device 4 in the pre-electrolysis unit. Finally, the effluent 14 of ...

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Abstract

The invention relates to a method and a device for enhanced ozone oxidation wastewater treatment of ozone tail gas. According to the method, ozone and oxygen in ozone oxidation reaction tail gas are subjected to electrocatalytic reduction to obtain hydrogen peroxide; the hydrogen peroxide catalyzes the ozone to generate hydroxyl radicals; and organic matters in wastewater are mineralized and decomposed. The device comprises a pre-electrolysis unit and an ozone oxidation unit, wherein a tail gas outlet of the ozone oxidation unit is connected to the pre-electrolysis unit. According to the method and the device, oxygen and ozone resources in the tail gas are fully utilized; destroying treatment is not needed; and an ozone oxidation treatment effect is enhanced.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a method and a device for ozone tail gas enhanced ozone oxidation wastewater treatment. Background technique [0002] After biological treatment of wastewater, the remaining organic matter is usually difficult to biodegrade. These organic substances have the "three causes" of carcinogenicity, teratogenicity and mutagenicity, which are extremely harmful and must be removed deeply. For these low-concentration refractory organics, the available technologies are mainly adsorption and oxidation. The adsorption method usually uses activated carbon as the adsorbent. The adsorption capacity of activated carbon is limited, and the regeneration cost after saturation is very high. At the same time, the waste carbon adsorbed and saturated with refractory organic matter becomes hazardous solid waste and causes secondary pollution. Oxidation technology mainly adopts advanced o...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F1/72
Inventor 李玉平李海波刘晨明林琳刘永胜
Owner BEIJING CYCLE COLUMBUS ENVIRONMENTAL SCI & TECH
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