Device and method for treating nitrobenzene pollution of underground water

Abstract

The invention relates to a device and method for treating nitrobenzene pollution of underground water. The device is characterized by comprising a main body reaction chamber, a power supply, a mercury lamp, an electrode positive pole, an electrode negative pole, a stirrer, an aeration oxygen filling device, a liquid storage tank and a reflux pump, wherein a feeding hole is formed near the electrode positive pole; the bottom of the main body reaction chamber is provided with a reflux inlet; the upper end of the side wall of the main body reaction chamber is provided with a water inlet hole, and the lower end of the side wall of the main body reaction chamber is provided with a water outlet hole; the stirrer is inserted in the center of the interior of the main body reaction chamber; the electrode positive pole and the electrode negative pole are inserted in the main body reaction chamber in parallel; the aeration oxygen filling device is inserted near the electrode negative pole; the power supply and the mercury lamp are arranged above the exterior of the main body reaction chamber; one ends of the electrode positive pole and the mercury lamp are respectively connected with a positive pole of the power supply, and the other ends of the electrode negative pole and the mercury lamp are respectively connected with a negative pole of the power supply; the liquid storage tank is arranged outside the main body reaction chamber; one end of the liquid storage tank is connected with the water outlet hole of the main body reaction chamber, and the other end of the liquid storage tank is connected with the reflux inlet of the main body reaction chamber by the reflux pump. The device and the method can be widely used for treating the nitrobenzene-containing underground water.

Description

technical field [0001] The invention relates to a device and method for treating groundwater, in particular to a device and method for treating nitrobenzene pollution in groundwater. Background technique [0002] Nitrobenzene is a colorless or yellowish oily liquid with a bitter almond flavor, which has bioaccumulation, carcinogenicity, teratogenicity, and mutagenicity. It is listed in the world's "Environmental Priority Control of Toxic Organic Pollutants" At the top of the list, it is also one of the 52 priority toxic chemicals determined by our country. It is a common and widely used highly toxic chemical raw material, mainly used in synthetic dyes, medicines, herbicides, insecticides, detergents, explosives, rubber and plastic additives, etc. Due to the rapid increase of wastewater discharge due to the development of my country's social economy and industry, coupled with the leakage of wastewater treatment, accident discharge and leachate leakage in the process of sludg...

AI Technical Summary

Problems solved by technology

Compared with the electric Fenton, the outstanding advantage of the photoelectric Fenton is that the introduction of ultraviolet light can induce H 2 o 2 Generates a large amount of OH, UV light and Fe 2+ to H 2 o 2 The catalytic decomposition of has a synergistic effect, making H 2 o 2 The decomposition rate is much higher than that of pure Fe 2+ or a simple summation of UV-photocatalytic decomposition rates, maintaining the H 2 o 2 High utilization rate and improved current utilization efficiency, so the treatment effect is better than the electric Fenton oxidation method, but only the photoelectric Fenton oxidation method is used to degrade nitrobenzene, and the degradation efficiency is still low

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