Water treatment method combining ozone catalytic oxidation with ultra-filtration membrane

An ozone catalytic oxidation and ultrafiltration membrane technology, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. Efficiency, easy operation and management effect

Inactive Publication Date: 2011-04-06
HEILONGJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the removal rate of nitrogen, phosphorus, COD, BOD and SS is not up to standard in the treatment of the water quality of the existing urban water supply plant, the water quality of the secondary effluent of the urban sewage plant, and the reuse of industrial wastewater. And provide a kind of water treatment method of ozone catalytic oxidation combined with ultrafiltration membrane

Method used

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specific Embodiment approach 1

[0009] Specific embodiment one: the water treatment method of this embodiment ozone catalytic oxidation combined with ultrafiltration membrane is carried out according to the following steps: one, ozone is added to the water to be treated, and the contact time of ozone and water is 5~100min, and ozone is added The water flow rate is 0.2-9.0mg / L, and the water flow rate is 1-20m / h; 2. After the effluent in step 1 is treated with an ultrafiltration membrane with a rated pore size of 0.001-0.02μm, the combination of ozone catalytic oxidation and ultrafiltration membrane is completed. water treatment; the method of ozone dosing in step 1 is instantaneous single-point dosing, multi-point dosing or continuous dosing; the operating pressure difference used for ultrafiltration membrane treatment in step 2 is 0.1-0.8MPa, and the applicable pH value 1 to 13.

[0010] In step 1 of this embodiment, after ozone contacts water, pollutants in the water are oxidized by ozone, so that pollutan...

specific Embodiment approach 2

[0012] Embodiment 2: This embodiment differs from Embodiment 1 in that in step 1, a homogeneous catalyst for homogeneously catalyzing the ozonation reaction or a heterogeneous catalyst for heterogeneously catalyzing the ozonation reaction can also be added. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0013] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the amount of the homogeneous catalyst for the homogeneous catalytic ozonation reaction added in step 1 is added according to the equivalent ratio ozone:catalyst=1:0.01~0.5. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention provides a water treatment method combining ozone catalytic oxidation with an ultra-filtration membrane, which relates to a water treatment method and solves the problem that the removing rate of nitrogen, phosphor, COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and SS (Standard Specification) cannot reach the standards in the treatment of the water quality of the traditional urban water supply plants, the water quality of secondary discharge water of the urban sewage plants and the water recycling of industrial wastewater. The method comprises the following steps of: firstly, adding ozone to water to be treated; and secondly, treating the discharge water in the first step with the ultra-filtration membrane to complete. The water treatment method for combining ozone catalytic oxidation with the ultra-filtration membrane can effectively eliminate organic pollutant in water, odor, dull color and other pollutants, such as bacteria, virus, heavy metal, and the like, has very high depollution efficiency and can improve the treated water quality in an all-round way; the method is simple for running and easy for operation and management and can be applied to the process courses, such as the standard upgrading modification of the water quality of the urban water supply plant, the upgrading modification of the urban sewage plant, the recycling of the industrial wastewater, and the like.

Description

technical field [0001] The invention relates to a water treatment method. Background technique [0002] The application of ozone in drinking water treatment has a history of more than 100 years, and has now become the core technology of deep purification of drinking water. Ozone catalytic oxidation technology belongs to the category of advanced oxidation technology. It pursues the generation of more intermediate products with strong oxidation ability (such as hydroxyl radicals, OH) under the action of ozone under the action of catalyst, so as to achieve the purpose of improving ozone oxidation ability. The ultrafiltration membrane is one of the earliest developed polymer separation membranes. The industrial application of the ultrafiltration membrane is very extensive, and it has become one of the new chemical unit operations; it is a Aperture Consistent specifications, microporous filter membrane with a rated pore size of 0.001-0.02 μm, and pressure Difference Membrane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/78C02F1/44
Inventor 韩帮军韩雅红马玉新马军王群
Owner HEILONGJIANG UNIV
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