WO2022160770A1 - 一种雾化联合紫外催化氧化净水方法与装置 - Google Patents
一种雾化联合紫外催化氧化净水方法与装置 Download PDFInfo
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- WO2022160770A1 WO2022160770A1 PCT/CN2021/122274 CN2021122274W WO2022160770A1 WO 2022160770 A1 WO2022160770 A1 WO 2022160770A1 CN 2021122274 W CN2021122274 W CN 2021122274W WO 2022160770 A1 WO2022160770 A1 WO 2022160770A1
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- catalytic oxidation
- water purification
- ultraviolet
- atomization
- cooling
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000000889 atomisation Methods 0.000 title claims abstract description 29
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 26
- 230000003647 oxidation Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 21
- 238000000746 purification Methods 0.000 title claims abstract description 19
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 40
- 230000009471 action Effects 0.000 claims abstract description 16
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 230000005684 electric field Effects 0.000 claims abstract description 9
- 238000009833 condensation Methods 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 47
- 239000011229 interlayer Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 239000007800 oxidant agent Substances 0.000 abstract description 8
- 239000005416 organic matter Substances 0.000 abstract description 7
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 12
- 230000001590 oxidative effect Effects 0.000 description 8
- 239000005711 Benzoic acid Substances 0.000 description 6
- 235000010233 benzoic acid Nutrition 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000598 endocrine disruptor Substances 0.000 description 1
- 231100000049 endocrine disruptor Toxicity 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
Definitions
- the invention belongs to the technical field of water supply treatment, and in particular relates to a method and a device for water purification by atomization combined with ultraviolet catalytic oxidation.
- UV light and oxidants such as O 3 , H 2 O 2 , PDS, etc. catalyze reaction to generate highly active free radicals (HO , SO 4 - , etc.), which can efficiently degrade most organic pollutants in water, and even mineralize organic matter It is inorganic molecules such as CO 2 and H 2 O, and has good application effect in the field of drinking water purification.
- photocatalysis has been highly recognized in the field of water pollution treatment.
- ultraviolet rays can destroy DNA and RNA in microbial cells, causing growth and regenerative cell death, which can play a better role in sterilization and disinfection.
- the highly active free radicals generated in the ultraviolet catalytic oxidation system have obvious degradation effects on organic micro-pollutants, which can better improve the quality of drinking water.
- the oxidation effect of UV alone is poor, and an external oxidant is usually required to degrade the organic pollutants in the water by using the generated active components.
- an external oxidant is usually required to degrade the organic pollutants in the water by using the generated active components.
- the dosage of the oxidant is low, the degradation effect of the pollutants is not good.
- increasing the dosage of oxidant will easily lead to the increase of the cost of medicament dosage, excessive oxidant residue in the water body and other problems, which affects the application of UV in advanced treatment of drinking water.
- the purpose of the present invention is to provide a method and device for water purification by atomization combined with ultraviolet catalytic oxidation.
- the technical scheme of the present invention is:
- a method for purifying water by atomization combined with ultraviolet catalytic oxidation.
- heat is released, and then under the action of the microscopic electric field, the dispersed droplets react to generate hydrogen peroxide, and then under the condition of ultraviolet radiation, the hydrogen peroxide is decomposed to generate hydroxyl radicals, and the hydroxyl radicals and the dispersed droplets in the droplets.
- Organic pollutants react to decompose organic pollutants.
- an atomization combined ultraviolet catalytic oxidation water purification device includes an atomization device, an air intake pipe, a cooling device, and an ultraviolet irradiation device.
- the atomization device is connected to the intake pipe, the intake pipe is connected to the cooling device, and the ultraviolet irradiation device The device is arranged inside the cooling device.
- the atomization device is used to make the polluted water body form dispersed droplets.
- the dispersed droplets are in contact with the surface of the low-temperature contact plate, due to the local heat release during the condensation process of the dispersed droplets, the water-air interface is prompted to generate hydrogen peroxide under the action of the microscopic electric field. , no need to add other chemicals, and hydrogen peroxide will decompose under the action of ultraviolet catalysis to produce strong oxidizing HO, which can oxidize or even mineralize the organic pollutants dissolved in the dispersed droplets. After the droplets gather to form large droplets for confluence recovery, the water body containing organic pollutants is purified.
- the polluted water body Compared with the existing water purification device or method, the polluted water body generates hydrogen peroxide, and then the hydrogen peroxide generates hydroxyl radicals under the action of ultraviolet radiation.
- the treatment effect of sewage is improved, and the problems of adding oxidant to sewage treatment, increasing cost, poor degradation effect and residual oxidant are solved.
- the water body is atomized only by physical or chemical action, and the ultraviolet lamp is used to irradiate it, without adding external chemical agents, and without secondary pollution, which is a green water treatment process.
- Fig. 1 is the benzoic acid degradation effect under the effect of atomization combined ultraviolet in the embodiment of the present invention
- FIG. 2 is a schematic diagram of a device for realizing a method for purifying water by atomization combined with ultraviolet catalytic oxidation according to an embodiment of the present invention
- a method for purifying water by atomization combined with ultraviolet catalytic oxidation.
- heat is released, and then under the action of the microscopic electric field, the dispersed droplets react to generate hydrogen peroxide, and then under the condition of ultraviolet radiation, the hydrogen peroxide is decomposed to generate hydroxyl radicals, and the hydroxyl radicals and the dispersed droplets in the droplets.
- Organic pollutants react to decompose organic pollutants.
- micro-atomized water droplets generate hydrogen peroxide under the action of an exothermic reaction and a microscopic electric field. Hydrogen peroxide is catalyzed and decomposed under the action of ultraviolet radiation to generate hydroxyl radicals, and the hydroxyl radicals undergo an oxidation reaction with organic matter, so that the organic matter becomes small molecular organic matter or carbon dioxide and water.
- the particle size of the dispersed droplets is less than 10 microns. Atomizing the polluted water body into dispersed droplets is conducive to the generation of a microscopic electric field at the water-air interface to generate hydrogen peroxide. Conducive to the homogenization of dispersed droplets.
- the concentration of organic pollutants in the polluted water body is 1 ⁇ M-10 mM.
- the temperature of the cooling plate is 1-10°C; preferably 1-4°C.
- the temperature of the cooling water causes the dispersed droplets to condense and clump together.
- the dispersed droplets and air enter the cooling device together, and under the action of cooling in a suitable temperature range, condensation occurs, heat is released, and then hydrogen peroxide is generated under the action of a microscopic electric field.
- the light intensity of the UV radiation is 10-20W.
- the cooling plate is a stainless steel plate or a quartz plate or the like.
- an atomization combined ultraviolet catalytic oxidation water purification device includes an atomization device, an air intake pipe, a cooling device, and an ultraviolet irradiation device.
- the atomization device is connected to the intake pipe, the intake pipe is connected to the cooling device, and the ultraviolet irradiation device The device is arranged inside the cooling device.
- the cooling device is a box structure provided with an interlayer, and a cooling source is passed into the interlayer.
- a cooling source is passed into the interlayer, and the cooling source is the temperature reduction of the side wall of the cooling device. After the temperature is lowered, the dispersed droplets meet the inner wall of the cooled cooling device, and condense and release heat.
- the irradiation device is arranged on the inner wall of the cooling device, and then catalyzed and decomposed by ultraviolet radiation.
- annular wiper blade is provided at the air inlet of the cooling device, the annular wiper blade is arranged obliquely, one end of the wiper blade is connected to the inner side wall of the cooling device, and the other end is suspended in the air, and the annular wiper blade is arranged in the air.
- the function of setting the wiper is to remove the micro droplets formed on the condensing plate in time on the one hand, so as to prevent the increase of the droplet volume and affect the generation of hydrogen peroxide. On the other hand, the treated water body is effectively collected.
- one end of the cooling device is connected to the air intake pipe, and the other end is an outlet.
- the atomizing device is arranged at the inlet of the air intake pipe.
- An atomization combined ultraviolet catalytic oxidation water purification device comprising an atomization device, an air intake pipe, a cooling device, and an ultraviolet irradiation device. inside of the device.
- An annular wiper is arranged at the air inlet of the cooling device.
- the annular wiper 4 is arranged obliquely. One end of the wiper is connected to the inner side wall of the cooling device, and the other end is suspended.
- the small mouth end faces the side of the ultraviolet radiation device, and the large mouth end faces the air inlet side.
- One end of the cooling device is connected with the intake pipe, and the other end is the outlet.
- the atomizing device is arranged at the inlet of the air intake pipe.
- an air intake box is also included, the air intake pipe passes through the air intake box, the air intake pipe is set at a 90-degree corner, and the air inlet 3 of the air intake pipe is provided with an atomizing device 2, and the atomizing device 2 is arranged inside the air intake box, and the side wall of the air intake box is provided with a water inlet 1;
- the interlayer of the cooling device is provided with a cooling water inlet 8 and a cooling water outlet 9, and the cooling source is cooling water.
- the outlet 7 of the cooling device is arranged on the bottom side of the cooling device, the outlet is of a conical design, and the top of the conical outlet is a water collecting port 6 .
- the ultraviolet irradiation device is composed of several ultraviolet lamps, and the number of ultraviolet lamps is 5-10.
- the raw water (benzoic acid concentration of 10 mmol/L) is atomized into dispersed droplets after passing through the atomizer, and then contacted with the surface of the low-temperature cooling plate under the action of the air supply port, the temperature of the cooling plate
- the temperature is 1 °C
- Oxidation reaction occurs with benzoic acid, thereby oxidizing benzoic acid into small molecular organic substances or inorganic substances such as carbon dioxide and water, so as to achieve the purpose of removing benzoic acid in raw water.
- the effluent contained only 4.124 mmol/L benzoic acid, and the removal rate reached 58.76%.
- the temperature of the cooling plate was 4°C.
- Example 3 The effects of Example 3 were that the removal rate of organic matter was 55.35%.
- Example 2 Compared to Example 2, the cooling device does not pass into the cooling source.
- the removal rate of organic matter was 2%.
- Example 2 Compared with Example 2, the atomized droplets were passed into a cooling device, and ultraviolet irradiation was performed in an oxygen-free environment (without passing air). The organic removal rate is 15%.
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
本发明涉及一种雾化联合紫外催化氧化净水方法与装置。所述方法为：污染水体雾化后成为分散液滴，分散液滴在空气的作用下移动到低温板的表面，在低温板表面冷凝的过程中放出热量，然后在微观电场的作用下，分散液滴反应产生过氧化氢，然后在紫外辐射的条件下，过氧化氢分解产生羟基自由基，羟基自由基与分散液滴中的有机污染物反应，使有机污染物分解。雾化液滴产生过氧化氢，然后在紫外辐照的条件下使有机物分解，进行水体净化，净化效果好，不用外加氧化剂。
Description
本发明属于给水处理技术领域，具体涉及一种雾化联合紫外催化氧化净水方法与装置。
公开该背景技术部分的信息仅仅旨在增加对本发明的总体背景的理解，而不必然被视为承认或以任何形式暗示该信息构成已经成为本领域一般技术人员所公知的现有技术。
随着我国工农业的发展，新兴的有机污染物被广泛使用并不断释放到环境中，随着分析检测技术的进步，有机污染物如杀虫剂、内分泌干扰物和一些消毒副产物等在水中的检出频率越来越高)。水污染问题日益突出，水环境恶化威胁人民健康，严重阻碍了社会的绿色可持续发展，这对水处理技术提出了更高的要求，而加快环境科学与技术的创新和应用成为水环境污染治理的关键。
近些年，光催化氧化技术由于设备简便、反应条件温和、反应过程易于控制等优点，在水处理领域受到了越来越多的关注。紫外与氧化剂如O
3、H
2O
2、PDS等发生催化反应生成高活性自由基(HO·，SO
4
-·等)，能够高效降解水中绝大多数有机污染物质，甚至能够将有机物矿化为CO
2和H
2O等无机分子，在饮用水净化领域有较好的应用效果。目前光催化在水污染处理领域已经得到行业内较高的认可，一方面紫外线可以破坏微生物机体细胞中的DNA和RNA，造成生长性细胞死亡和再生性细胞死亡，能够起到较好的杀菌消毒效果；另一方面紫外催化氧化体系中产生的高活性自由基对有机微污染物降解作用明显，能够较好的提升饮用水品质。
但是在高级氧化体系中，单独紫外的氧化效果较差，通常需要外加氧化剂，从而 利用产生的活性成分降解水体中的有机污染物，一方面氧化剂投加量低时，污染物的降解效果不好；另一方面，加大氧化剂投加量，易导致药剂投加成本增高，水体中过量的氧化剂残留等问题，影响了紫外在饮用水深度处理中的应用。
发明内容
针对上述现有技术中存在的问题，本发明的目的是提供一种雾化联合紫外催化氧化净水方法与装置。
为了解决以上技术问题，本发明的技术方案为：
第一方面，一种雾化联合紫外催化氧化净水方法，所述方法为：污染水体雾化后成为分散液滴，分散液滴在空气的作用下移动到低温板的表面，在低温板表面冷凝的过程中放出热量，然后在微观电场的作用下，分散液滴反应产生过氧化氢，然后在紫外辐射的条件下，过氧化氢分解产生羟基自由基，羟基自由基与分散液滴中的有机污染物反应，使有机污染物分解。
第二方面，一种雾化联合紫外催化氧化净水装置，包括雾化装置、进气管、冷却装置、紫外辐照装置，雾化装置与进气管连接，进气管与冷却装置连接，紫外辐照装置设置在冷却装置的内部。
通过雾化装置实现使污染水体形成分散液滴的作用，分散液滴与低温接触板表面接触时，由于分散液滴冷凝过程中局部放热，促使水-空气界面在微观电场作用产生过氧化氢，无需加入其他化学药剂，而过氧化氢在紫外催化作用下会分解产生强氧化型的HO·，对溶于分散液滴中的有机污染物质进行氧化甚至矿化，经氧化处理后的分散液滴汇集形成大液滴进行汇流回收后，即对含有机污染物水体进行了净化。
相比于现有的净水装置或方法，使污染水体自身产生了过氧化氢，然后过氧化氢在紫外辐照的作用下，产生羟基自由基。提高了污水的处理效果，解决了污水处理需要加入氧化剂，增加成本，降解效果不好、氧化剂残留的问题。
本发明一个或多个技术方案具有以下有益效果：
受污染水被雾化后，分散液滴气-液、液-固界面产生过氧化氢，在紫外催化作用下产生活性自由基，增加了单位面积上自由基的稳态浓度，能够高效降解水体中污染物质。
本发明中仅依靠物理或化学作用将水体雾化，利用紫外灯进行照射，无需增加外部化学药剂，无二次污染，是一种绿色水处理工艺。
构成本发明的一部分的说明书附图用来提供对本申请的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。
图1为本发明实施例雾化联合紫外作用下的苯甲酸降解效果；
图2为本发明实施例实现雾化联合紫外催化氧化净水方法的装置示意图；
其中，1、进水口，2、雾化器，3、进风口，4、刮水板，5、紫外灯，6、汇水口，7、出水口，8、冷却水入口，9、冷却水出口。
应该指出，以下详细说明都是例示性的，旨在对本发明提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本发明所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
第一方面，一种雾化联合紫外催化氧化净水方法，所述方法为：污染水体雾化后成为分散液滴，分散液滴在空气的作用下移动到低温板的表面，在低温板表面冷凝的 过程中放出热量，然后在微观电场的作用下，分散液滴反应产生过氧化氢，然后在紫外辐射的条件下，过氧化氢分解产生羟基自由基，羟基自由基与分散液滴中的有机污染物反应，使有机污染物分解。
微型雾化水滴在放热反应和微观电场作用下生成过氧化氢。过氧化氢在紫外辐照的作用下催化分解产生羟基自由基，羟基自由基与有机物发生氧化反应，使有机物成为小分子有机物或者二氧化碳和水。
在本发明的一些实施方式中，分散液滴的粒径为小于10微米。将污染水体雾化为分散液滴，有利于在水-空气界面产生微观电场，产生过氧化氢。有利于分散液滴均匀化。
在本发明的一些实施方式中，污染水体中有机污染物的浓度为1μM-10mM。
在本发明的一些实施方式中，冷却板的温度为1-10℃；优选为1-4℃。冷却水的温度促使分散液滴发生冷凝作用，而聚集在一起。分散液滴和空气一起进入到冷却装置中，在合适的温度范围内冷却的作用下，发生冷凝，放出热量，然后在微观电场的作用下产生过氧化氢。
在本发明的一些实施方式中，紫外辐射的光强为10-20W。
在本发明的一些实施方式中，冷却板为不锈钢板或石英板等。
第二方面，一种雾化联合紫外催化氧化净水装置，包括雾化装置、进气管、冷却装置、紫外辐照装置，雾化装置与进气管连接，进气管与冷却装置连接，紫外辐照装置设置在冷却装置的内部。
在本发明的一些实施方式中，冷却装置为设置有夹层的箱体结构，夹层内通入冷却源。夹层内通入冷却源，冷却源是冷却装置的侧壁温度降低。温度降低后，分散液滴遇到冷却的冷却装置内壁，进行冷凝放热，辐照装置设置在冷却装置的内侧壁，然后进行紫外辐照催化分解。
在本发明的一些实施方式中，冷却装置的进气口处设置环形刮水板，环形刮水板倾斜设置，刮水板的一端与冷却装置的内侧壁连接，另一端悬空设置，环形刮水板形成的锥型结构，小口端朝向紫外辐射装置一侧，大口端朝向进气口一侧。
设置刮水板的作用为一方面及时去除冷凝板上形成的微型液滴，以防液滴体积增大而影响过氧化氢生成。另一方面有效汇集处理后水体。
在本发明的一些实施方式中，冷却装置的一端与进气管连接，另一端为出口。
在本发明的一些实施方式中，雾化装置设置在进气管的入口处。
下面结合实施例对本发明进一步说明
实施例1
一种雾化联合紫外催化氧化净水装置，包括雾化装置、进气管、冷却装置、紫外辐照装置，雾化装置与进气管连接，进气管与冷却装置连接，紫外辐照装置设置在冷却装置的内部。冷却装置的进气口处设置环形刮水板，环形刮水板4倾斜设置，刮水板的一端与冷却装置的内侧壁连接，另一端悬空设置，环形刮水板4形成的锥型结构，小口端朝向紫外辐射装置一侧，大口端朝向进气口一侧。冷却装置的一端与进气管连接，另一端为出口。雾化装置设置在进气管的入口处。
如图2所示，在一种实施方式中，还包括进气箱，进气管穿过进气箱，进气管设置90度拐角，进气管的进风口3处设置雾化装置2，雾化装置2设置在进气箱的内部，进气箱的侧壁设置进水口1；
冷却装置的夹层设置冷却水进口8、冷却水出口9，冷却源为冷却水。
冷却装置的出口7设置在冷却装置的底部一侧，出口为锥型设计，锥型出口的顶部为汇水口6。
紫外辐照装置由若干紫外灯组成，紫外灯的数量为5-10个。
实施例2
利用实施1的装置进行污水处理，原水(苯甲酸浓度为10mmol/L)经过雾化器后被雾化成为分散液滴，后在送风口的作用下与低温冷却板表面接触，冷却板的温度为1℃，在其冷凝过程中发生局部放热反应，促使水-空气界面在微观电场作用下产生过氧化氢，过氧化氢在紫外灯辐照催化下分解产生羟基自由基，羟基自由基迅速与苯甲酸发生氧化反应，从而将苯甲酸氧化成为小分子有机物或者二氧化碳和水等无机物，从而达到去除原水中苯甲酸的目的。
如图1所示，出水中仅含有4.124mmol/L苯甲酸，去除率达到了58.76％。
实施例3
相比于实施例2，冷却板的温度为4℃。
实施例3的效果分别为有机物去除率为55.35％。
对比例1
相比于实施例2，冷却装置不通入冷却源。有机物去除率为2％。
对比例2
相比于实施例2，将雾化后的液滴通入冷却装置中，在无氧环境(不通入空气)中进行紫外辐照。有机物去除率为15％。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (10)
- 一种雾化联合紫外催化氧化净水方法，其特征在于：所述方法为：污染水体雾化后成为分散液滴，分散液滴在空气的作用下移动到低温板的表面，在低温板表面冷凝的过程中放出热量，然后在微观电场的作用下，分散液滴反应产生过氧化氢，然后在紫外辐射的条件下，过氧化氢分解产生羟基自由基，羟基自由基与分散液滴中的有机污染物反应，使有机污染物分解。
- 如权利要求1所述的雾化联合紫外催化氧化净水方法，其特征在于：分散液滴的粒径为小于10微米。
- 如权利要求1所述的雾化联合紫外催化氧化净水方法，其特征在于：污染水体中有机污染物的浓度为1μM-10mM。
- 如权利要求1所述的雾化联合紫外催化氧化净水方法，其特征在于：冷却板的温度为1-10℃；优选为1-4℃。
- 如权利要求1所述的雾化联合紫外催化氧化净水方法，其特征在于：紫外辐射的光强为10-20W。
- 如权利要求1所述的雾化联合紫外催化氧化净水方法，其特征在于：冷却板为不锈钢板或石英板
- 一种雾化联合紫外催化氧化净水装置，其特征在于：包括雾化装置、进气管、冷却装置、紫外辐照装置，雾化装置与进气管连接，进气管与冷却装置连接，紫外辐照装置设置在冷却装置的内部。
- 如权利要求7所述的雾化联合紫外催化氧化净水装置，其特征在于：，冷却装置为设置有夹层的箱体结构，夹层内通入冷却源。夹层内通入冷却源，冷却源是冷却装置的侧壁温度降低。
- 如权利要求7所述的雾化联合紫外催化氧化净水装置，其特征在于：冷却装置的进气口处设置环形刮水板，环形刮水板倾斜设置，刮水板的一端与冷却装置的内侧壁连接，另一端悬空设置，环形刮水板形成的锥型结构，小口端朝向紫外辐射装置一侧，大口端朝向进气口一侧。
- 如权利要求7所述的雾化联合紫外催化氧化净水装置，其特征在于：冷却装置的一端与进气管连接，另一端为出口；或，雾化装置设置在进气管的入口处。
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