Method for removing pollutants in water by film process catalytic ozonation

A pollutant and ozonation technology, applied in the field of water treatment, can solve the problems of nano-scale metal oxide loading, catalyst loss, etc., and achieve the effects of easy catalysis, increasing quantity, and improving ozone utilization.

Inactive Publication Date: 2013-04-24
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

Therefore, in recent years, the heterogeneous catalytic ozonation technology using solid metals, metal oxides, activated carbon or metals or metal oxides loaded on the carrier as catalysts has made up for the shortcomings of the individual ozone process technology. Compared with the individual ozone oxidation process, The heterogeneous catalytic ozonation technology has improved the remo

Method used

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Embodiment 1

[0013] Embodiment 1: a kind of membrane method catalytic ozonation method of removing pollutants in water of embodiment 1, described metal oxide is nanoscale titanium dioxide, the quality of nanoscale titanium dioxide is 0.05 kg, and the quality of polyvinylidene fluoride film is 10 kg, The ozone bubble point pressure is 50 kPa.

Embodiment 2

[0014] Embodiment 2: a kind of membrane method catalytic ozonation method for removing pollutants in water according to embodiment 2, the metal oxide is nano-scale ferric oxide, the quality of nano-scale ferric oxide is 0.07 kg, polyvinylidene fluoride The mass of the membrane is 10 kg; the ozone bubble point pressure is 30 kPa.

Embodiment 3

[0015] Embodiment 3: A kind of membrane method catalytic ozonation method of removing pollutants in water of embodiment 3, described metal oxide is nano-scale aluminum oxide, the quality of nano-scale aluminum oxide is 0.09 kg, polyvinylidene fluoride The mass of the membrane is 10 kg; the ozone bubble point pressure is 60 kPa.

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PUM

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Abstract

The invention discloses a method for removing pollutants in water by film process catalytic ozonation. The method is characterized by comprising the steps as follows: loading nanoscale metal oxide into a polyvinylidene fluoride film, wherein the mass ratio of the nanoscale metal oxide in the polyvinylidene fluoride film is 0.5-2%; and filling ozone into an inner cavity of the polyvinylidene fluoride film under the bubble point pressure of 10-60 kPa, separating gas phase fluid from liquid phase fluid through the polyvinylidene fluoride film of a catalyst loaded with the nanoscale metal oxide, and carrying out advanced oxidation reaction on generated strong oxygen free radicals and pollutants in a shell pass so as to remove the pollutants in the water. The nanoscale metal oxide is any one of nanoscale titanium dioxide, nanoscale iron sesquioxide, nanoscale aluminum sesquioxide, nanoscale manganese dioxide, nanoscale copper oxide, nanoscale nickel oxide and nanoscale tricobalt tetraoxide. The method is suitable for deep treatment of drinking water and has the advantages of good pollutant removal efficiency, high ozone utilization rate, low water treatment cost and the like.

Description

technical field [0001] The invention relates to the technical field of water treatment, and relates to a membrane-catalyzed ozonation method for removing pollutants in water. Background technique [0002] With the increasingly prominent problem of non-point source water pollution in my country, organic pollutants in water have a greater impact on human health. The traditional water treatment process cannot fundamentally remove the complex and stable organic matter in the water. Therefore, it is an urgent problem to be solved to find a cost-effective and environmentally friendly water treatment process. In recent years, with the development of advanced oxidation technology (AOP), ozone has attracted much attention due to its strong oxidation ability. However, there are problems such as low ozone utilization rate, insufficient oxidation capacity, low solubility in water, and selectivity to organic degradation when the ozone oxidation process is used alone. It has been report...

Claims

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Application Information

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IPC IPC(8): C02F1/78
Inventor 张兰河张海丰张万友
Owner NORTHEAST DIANLI UNIVERSITY
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