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All-weather titanium dioxide nanowire photocatalysis sewage disinfecting and purifying device

A technology of titanium dioxide and purification device, which is applied in the field of all-weather titanium dioxide nanosilk photocatalytic sewage disinfection and purification device, which can solve the problems of difficult separation of photocatalyst, poor sewage purification ability, and low bactericidal ability, and achieve easy separation, convenient management, and strong bactericidal ability Effect

Inactive Publication Date: 2010-07-28
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the shortcomings of the above-mentioned prior art and the problems of low sterilization ability of traditional disinfection equipment, easy to produce secondary pollution, poor sewage purification ability, difficult separation and fixation of photocatalysts, etc., the present invention provides an all-weather disinfection device with convenient operation, high efficiency and low consumption. Titanium dioxide nano silk photocatalytic sewage disinfection and purification device

Method used

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  • All-weather titanium dioxide nanowire photocatalysis sewage disinfecting and purifying device

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Embodiment 1

[0028] Embodiment 1: An all-weather titanium dioxide nano silk photocatalytic sewage disinfection and purification device, comprising a quartz outer cylinder 6 and an ultraviolet lamp 9, such as figure 1 As shown, wherein, the two ends of the quartz outer cylinder 6 are sealed by reflectors 7, and the quartz outer cylinder 6 is provided with a layer of aluminum mesh sleeve 4; the gap between the aluminum mesh sleeve 4 is filled with titanium dioxide nanowires 5; the ultraviolet lamp 9 is located at The quartz outer cylinder 6 is surrounded by a quartz sleeve 3; the quartz outer cylinder 6 is provided with a water inlet 11 and a water outlet 12.

[0029] The titanium dioxide nanowires are prepared by the following method:

[0030] (1) Add 78ml tetrabutyl titanate to a mixed solution of 11.6ml ethyl acetoacetate and 167ml isopropanol (the molar ratio of tetrabutyl titanate, ethyl acetoacetate and isopropanol is 1: 0.4:9), refluxed for 1.5h under nitrogen atmosphere to prepare s...

Embodiment 2

[0040] Embodiment 2: An all-weather titanium dioxide nanowire photocatalytic sewage disinfection and purification device, the structure is the same as that of embodiment 1, the difference is that the preparation method of titanium dioxide nanowire is as follows:

[0041] (1) Add 78ml tetrabutyl titanate to a mixed solution of 17.4ml ethyl acetoacetate and 111ml isopropanol (the molar ratio of tetrabutyl titanate, ethyl acetoacetate and isopropanol is 1: 0.6:6), refluxed for 1h under nitrogen atmosphere to prepare solution A;

[0042](2) 4.2ml of water and 46.5ml of isopropanol are mixed to prepare solution B (the molar ratio of water and isopropanol is 1:3);

[0043] (3) Under the protection of nitrogen, solution B was added dropwise to solution A, and then the by-produced isopropanol was discarded by distillation to obtain the intermediate polymerized titanium, which was dried at 140°C to obtain a yellow-brown powder;

[0044] (4) Dissolve 30 g of the yellow-brown powder obt...

Embodiment 3

[0046] Embodiment 3: An all-weather titanium dioxide nanowire photocatalytic sewage disinfection and purification device, the structure is the same as in Example 1, the difference is that the preparation method of titanium dioxide nanowire is as follows:

[0047] (1) Add 78ml tetrabutyl titanate to a mixed solution of 5.8ml ethyl acetoacetate and 222ml isopropanol (the molar ratio of tetrabutyl titanate, ethyl acetoacetate and isopropanol is 1: 0.2:12), refluxed for 1h under nitrogen atmosphere to prepare solution A;

[0048] (2) 4.2ml of water and 111ml of isopropanol are mixed to prepare solution B (the molar ratio of water and isopropanol is 1:7);

[0049] (3) Under the protection of nitrogen, solution B was added dropwise to solution A, and then the by-produced isopropanol was discarded by distillation to obtain intermediate polymerized titanium, which was dried at 150°C to obtain a yellow-brown powder;

[0050] (4) Dissolve 30 g of the yellow-brown powder obtained above ...

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Abstract

The invention discloses an all-weather titanium dioxide nanowire photocatalysis sewage disinfecting and purifying device which comprises a quartz outer tube and an ultraviolet lamp, wherein two ends of the quartz outer tube are sealed by reflectors; at least one layer of aluminum mesh sleeve is arranged in the quartz outer tube; titanium dioxide nanowires are filled in the gaps of the aluminum mesh sleeve; the ultraviolet lamp is arranged in the quartz outer tube and is coated by a quartz sleeve; and the quartz outer tube is provided with a water inlet and a water outlet. The all-weather titanium dioxide nanowire photocatalysis sewage disinfecting and purifying device has the advantages that: 1, the device takes titanium dioxide nanowires as the packing medium, which are easy to fix, separate and recycle, are resistant to water impact, can bear heavy load, and the like; 2, the photocatalysis can kill the pathogenic bacteria and the toxins therein, has strong sterilization capability, can totally kill the bacteria and at the same time can mineralize the organic contaminants in the water; 3, the nanowires, serving as the photochemical catalyst, can be used repeatedly and are simple to operate and convenient to manage; 4, the device makes comprehensive use of the sunlight and the ultraviolet light, realizes all-weather sterilization and saves energy; and 5, the device has the double effects of disinfecting and deeply purifying the sewage.

Description

technical field [0001] The invention relates to an all-weather titanium dioxide nano-silk photocatalytic sewage disinfection and purification device, which belongs to the field of domestic sewage disinfection and purification. Background technique [0002] Domestic sewage often contains pathogenic microorganisms such as bacteria and pathogens, and sewage disinfection is an important procedure to ensure the sanitary safety of sewage treatment. At present, the more common disinfection methods are liquid chlorine disinfection, chlorine dioxide disinfection, and ultraviolet disinfection. Chlorine has strong reactivity, and it is easy to undergo substitution and oxidation reactions with organic matter in water, producing halogenated hydrocarbons and other "three-caused" by-products that are teratogenic, carcinogenic, and mutagenic, and reduce disinfection efficiency. Chlorine disinfection will also produce chlorine odor and chlorophenol odor, which also has a certain corrosive e...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/30
CPCY02W10/37
Inventor 包南李远尹光斌张成禄魏振涛刘颖
Owner SHANDONG UNIV
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