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Water treatment method for catalytic ozonation of refractory organics in water by ceramic membrane

A technology of refractory organic matter and ozone oxidation, which is used in oxidation water/sewage treatment, osmosis/dialysis water/sewage treatment, etc. to prolong the operation period, reduce the generation of toxic and harmful substances, and increase the degradation efficiency and mineralization degree.

Inactive Publication Date: 2014-07-30
BEIJING FORESTRY UNIVERSITY
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  • Abstract
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Problems solved by technology

[0010] The object of the present invention is to aim at the deficiencies and defects in the ozone oxidation technology and ceramic membrane filtration technology, and effectively combine the above two technologies after improvement. The technology and device can realize the treatment of suspended particles, colloids and difficult The system can obtain good effluent water quality while degrading organic matter, etc., and the device structure is relatively simple. In the case of low ozone supply, it can effectively control the development of membrane fouling and obtain higher membrane flux.

Method used

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  • Water treatment method for catalytic ozonation of refractory organics in water by ceramic membrane

Examples

Experimental program
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Embodiment 1

[0033] Connect the test device according to the drawings, use an ozone generator to control the ozone ventilation rate to 1-6mg / L; the specific specifications of the tubular ceramic membrane are length 25.0cm, channel number 4-19, outer diameter 30mm, membrane area 0.12-0.20m 2 , the membrane pore size is 20.0~50.0nm; the compressive strength of the membrane module is 1.0Mpa, the applicable pH is 0~14, and the applicable temperature is -10℃~150℃. Use oxygen bottle (17) to provide oxygen to ozone generator, after passing through drier (11), flow meter (12), be connected with the oxygen input port of ozone generator by silicone flexible pipe, the output port of ozone generator is then used The ozone-resistant silicone tube is connected to the lower end of the ceramic membrane element through a valve. During the use of the ozone generator, the air outlet does not need to be connected, and the air pump switch does not need to be turned on. After the ozone generator runs stably, t...

Embodiment 2

[0035] The difference between this embodiment and Example 1 is that the ceramic membrane is modified by using nanometer FeOOH particles, and other steps and parameters are the same as those in Example 1.

Embodiment 3

[0037] The difference between this embodiment and Example 1 is the use of nano-Co 3 o 4 The particles modify the ceramic membrane, and the other steps and parameters are the same as those in the first example.

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Abstract

The invention relates to water deep treatment technology of heterogeneous catalytic ozonation depollution. With the combination of catalytic ozonation depollution technology with membrane filtration technology, a novel, high-efficient, and economical catalytic ozonation water deep treatment technology is provided, which combines the advantages of the two technologies, overcomes their disadvantages, effectively improves the ozone utilization rate and the ozone oxidation capability, reduces some toxic and harmful substances generated due to incomplete oxidation, alleviates the problem of ceramic membrane contamination, and prolongs the system operation period. An experiment device mainly comprises three parts: an ozone generation device, a ceramic membrane device, and a computer data acquisition and analysis system; an ozone outlet of the ozone generation device is connected with a water inlet valve of the ceramic membrane assembly through a silicone flexible pipe to realize the coupling of the two system. The method of the invention can improve the purifying effect of routine water treatment technology, and provides novel, high-efficient and cheap water deep treatment technology for enhanced removal of low-concentration high-toxicity refractory organic pollutants in water.

Description

technical field [0001] The invention relates to a heterogeneous catalytic ozone oxidation decontamination or membrane filtration water advanced treatment technology. Background technique [0002] In recent years, with the extensive application of chemical synthetic products in people's daily life and industrial and agricultural production, the types and contents of refractory organic pollutants and new pollutants in the water environment have increased significantly. The increasingly complex water pollution situation poses new challenges to my country's water quality safety assurance technology. Since conventional water treatment and sewage treatment processes are mainly to remove suspended, colloidal pollutants and nutritional pollutants in water, the ability to remove organic pollutants in water, especially refractory organic pollutants, is very limited or even powerless. Therefore, advanced treatment technology must be used to further ensure water quality safety. Among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78C02F1/44
Inventor 齐飞郭杨徐冰冰
Owner BEIJING FORESTRY UNIVERSITY
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