Method for rapid, high-efficiency and selective degradation of trace benzopyrene in water

A benzopyrene and selective technology, applied in chemical instruments and methods, water pollutants, oxidized water/sewage treatment, etc., can solve problems such as selective removal of difficult targets, destruction of ozone tail gas, ozone escape, etc., to achieve The effect of increasing the effective contact area, speeding up the process of dissolving gas, and improving the update rate

Inactive Publication Date: 2014-10-22
TONGJI UNIV +1
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Problems solved by technology

However, there are still some problems in the practical application of ozone catalytic oxidation technology: (1) The traditional ozone catalytic oxidation reactor adopts the mode of "gas dispersed in water", and the gas diffuser is used to form small bubbles of ozone, which are dissolved in contact with the liquid phase
These solid catalyst products have the problems of low stability, and their active components are easy to flow away with the water flow, which leads to the reduction of ozone catalytic effect.
(3) The tail gas generated after the ozone catalytic oxidation reaction is not properly disposed of, causing ecological and environmental problems
(4) The catalytic oxidati

Method used

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  • Method for rapid, high-efficiency and selective degradation of trace benzopyrene in water
  • Method for rapid, high-efficiency and selective degradation of trace benzopyrene in water
  • Method for rapid, high-efficiency and selective degradation of trace benzopyrene in water

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[0031] See Figure 1-4 .

[0032] First construct the ozone catalytic oxidation reactor 1. The bottom of the ozone catalytic oxidation reactor 1 is supported by supporting legs 6. The shell of the ozone catalytic oxidation reactor 1 can be made of materials resistant to ozone corrosion such as stainless steel, glass fiber reinforced plastic, polyvinyl chloride board, or concrete structures and other materials with anti-ozone corrosion treatment on the inner surface. The front of the shell is provided with a manhole 17 and a filler discharge port 2, and the lower end of the shell (water storage layer 7) is provided with a level gauge 3 and an air inlet 8 for ozonated gas. A water inlet 15 is provided in the center of the top end of the shell, a tail gas outlet 13 is provided on the top side, and a water outlet 5 is provided in the center of the bottom end of the shell.

[0033] In the ozone catalytic oxidation reactor 1 of the present invention, three functional areas, a water di...

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Abstract

The invention relates to a method for rapid, high-efficiency and selective degradation of trace benzopyrene in water. The method comprises the following steps: cutting trace-benzopyrene-containing wastewater having undergone biochemical treatment into water films with a filling material in a catalytic ozonation reactor; allowing the water films to contact with ozone or ozonized air flowing along a reverse direction and to be dissolved; and selectively degrading trace benzopyrene in the wastewater under the preferential adsorption and catalytic oxidation coupling effects of a molecular imprinting filling material. According to the invention, molecular imprinting technology and catalytic ozonation technology are combined, and trace benzopyrene in the wastewater is rapidly, highly efficiently and selectively treated; the absorption rate of ozone is more than 90% in 10 min in the catalytic ozonation reactor, so the removal rate of trace benzopyrene is more than 99%. The method can be widely applied to deep and recycling treatment of a variety of sewage and wastewater containing benzopyrene.

Description

technical field [0001] The invention relates to a method for rapidly, efficiently and selectively degrading trace amounts of benzopyrene in water. The method can quickly, efficiently and selectively remove trace amounts of benzopyrene pollutants in water, and is applicable to the technical field of advanced and recycling treatment of coking, oil refining, asphalt, plastic and other industrial wastewater. Background technique [0002] In recent years, with the continuous development of coal chemical industry, petroleum, plastics, coking and other chemical industries, a large number of polycyclic, heterocyclic, long-chain and other refractory organic pollutants (such as polycyclic aromatic hydrocarbons) have also been produced. Among them, benzopyrene is the most toxic and strong carcinogen among polycyclic aromatic hydrocarbons, which can cause genotoxicity in prokaryotes and mammalian cells. It enters the human environment, especially the water environment, through differen...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F101/32
Inventor 赵宁华陈良才唐秀华倪磊魏宏斌刘学钦
Owner TONGJI UNIV
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