Circulating spraying type ultraviolet Fenton oxidation organic waste gas treatment system and method

Abstract

The invention discloses a circulating spraying type ultraviolet Fenton oxidation organic waste gas treatment system and method. The treatment system comprises a spraying oxidation reaction chamber, an induced draught fan and a hydrogen peroxide adding device. An exhaust port is formed in the top of the spraying oxidation reaction chamber. A hydrogen peroxide inlet, a gas inlet and a Fenton reagent outlet are formed in the lower portion of the spraying oxidation reaction chamber. A Fenton reagent inlet is formed in the upper portion of the spraying oxidation reaction chamber. The induced draught fan is connected with the gas inlet. The hydrogen peroxide adding device is connected with the hydrogen peroxide inlet through a pressure pump. The Fenton reagent outlet is connected with the Fenton reagent inlet through a circulation pump. A Fenton reagent is contained in an inner cavity of the spraying oxidation reaction chamber. A spraying device is arranged on the upper portion in the inner cavity of the spraying oxidation reaction chamber and connected with the Fenton reagent inlet. A plurality of ultraviolet modulator tubes are arranged on the portion, above the liquid level of the Fenton reagent and below the spraying device, of the inner wall of the spraying oxidation reaction chamber. The ultraviolet modulator tubes are installed on the inner wall of the spraying oxidation reaction chamber in a parallel and crossed mode. The circulating spraying type ultraviolet Fenton oxidation organic waste gas treatment system and method are easy to operate, Fe2+ in the Fenton reagent is recycled, and the utilization rate of H2O2 is increased.

Description

technical field [0001] The invention relates to a circulating spray type ultraviolet Fenton oxidation organic waste gas treatment system and treatment method, which can remove various pollutants such as sulfur dioxide, nitrogen monoxide and volatile organic compounds, and is suitable for treating industrial waste gas, garbage and sewage odor. Background technique [0002] The traditional Fenton reagent method is to contain Fe 2+ Add H to the acidic solution 2 o 2 , at Fe 2+ Under the action of catalyst, H 2 o 2 It can generate highly active hydroxyl radicals (·OH), and then initiate and propagate a series of free radical chain reactions, accelerating the oxidation of organic and reducing substances. The principle of Fenton’s reagent method for treating organic waste gas is that the organic waste gas first transfers from the gas phase to the gas-liquid interface, and then passes through the phase interface into the liquid phase. The organic matter in the gas is finally o...

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Problems solved by technology

[0004] In order to overcome the low cycle efficiency of the existing Fenton reagent reaction, incomplete degradation of organic matter, Fe 2+ The dosage is large, and the generation of iron sludge is large, H 2 o 2 Due to the defects of low utilization rate and high cost, the present invention provides a circulating spray type ultraviolet Fenton oxidation organic waste gas treatment system and treatment method, which can significantly improve the gas-liquid mass transfer rate of organic waste gas, and at the same time in the spraying of Fenton reagent Adding ultraviolet light in the process not only improves the Fe 2+ and Fe 3+ cycle efficiency, and also improves the purification effect of organic waste gas

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