CN105582792B - A kind of synchronous apparatus and method for for removing odorant and microbial aerosol - Google Patents

A kind of synchronous apparatus and method for for removing odorant and microbial aerosol Download PDF

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CN105582792B
CN105582792B CN201410460781.2A CN201410460781A CN105582792B CN 105582792 B CN105582792 B CN 105582792B CN 201410460781 A CN201410460781 A CN 201410460781A CN 105582792 B CN105582792 B CN 105582792B
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刘建伟
夏雪峰
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Beijing University of Civil Engineering and Architecture
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Abstract

本发明属于废气处理技术领域,涉及一种同步去除恶臭物质和微生物气溶胶的设备与方法。本发明设备由湿式洗涤区、生物过滤区、干燥区和紫外光触媒反应区组成。含恶臭和微生物气溶胶的废气首先经过湿式洗涤区,气体得到加湿,同时部分水溶性好的恶臭物质得以去除,然后进入生物过滤区,生物过滤区与干燥区连接,干燥区与紫外光触媒反应区连接,光触媒滤网层中的TiO2在紫外灯的照射下,产生出氧化能力极强的氢氧基(·OH)与活性氧(·O),与恶臭物质发生反应,同时去除在生物过滤区未被去除的微生物气溶胶,净化后的无臭、无菌气体从排气口排出。本发明设备可同步去除恶臭物质和微生物气溶胶污染,去除效率高,效果稳定,无二次污染。

The invention belongs to the technical field of waste gas treatment, and relates to a device and a method for synchronously removing malodorous substances and microbial aerosols. The equipment of the present invention is composed of a wet washing area, a biological filtering area, a drying area and an ultraviolet photocatalyst reaction area. The waste gas containing malodorous and microbial aerosol first passes through the wet scrubbing area, the gas is humidified, and part of the odorous substances with good water solubility is removed, and then enters the biological filtration area, which is connected to the drying area, and the drying area is connected to the ultraviolet photocatalyst reaction area Connected, the TiO 2 in the photocatalyst filter layer is irradiated by the ultraviolet lamp to produce hydroxyl groups (·OH) and active oxygen (·O) with strong oxidizing ability, which react with the odorous substances and remove them in the biological filter. The microbial aerosol that has not been removed in the area, the purified odorless and sterile gas is discharged from the exhaust port. The device of the invention can simultaneously remove foul smelling substances and microbial aerosol pollution, has high removal efficiency, stable effect and no secondary pollution.

Description

一种同步去除恶臭物质和微生物气溶胶的设备与方法A device and method for synchronously removing malodorous substances and microbial aerosols

技术领域technical field

本发明属于废气处理领域,特别涉及一种同步去除恶臭物质和微生物气溶胶的设备与方法。The invention belongs to the field of waste gas treatment, in particular to a device and method for synchronously removing malodorous substances and microbial aerosols.

背景技术Background technique

近年来,随着城市化进程的加快,越来越多的城市污水处理厂、生活垃圾处理厂和生活垃圾中转站等市政设施相继投产运行,在改善城市环境方面发挥着越来越重要的作用。但由于城市污水或生活垃圾处理过程中,污水或生活垃圾中的含硫、氮物质和大量微生物很可能在搅动或曝气作用下以气体形式逸散到大气中,从而造成同时含恶臭物质和微生物气溶胶废气的污染。随着社会经济的发展、生活水平的提高和公众环境意识的日益增强,城市污水处理厂、生活垃圾处理厂、生活垃圾中转站等市政设施产生的恶臭物质和微生物气溶胶污染已成为亟待解决的首要问题。In recent years, with the acceleration of urbanization, more and more municipal facilities such as urban sewage treatment plants, domestic waste treatment plants and domestic waste transfer stations have been put into operation one after another, playing an increasingly important role in improving the urban environment . However, due to the process of urban sewage or domestic waste treatment, sulfur and nitrogen substances and a large number of microorganisms in sewage or domestic waste are likely to escape into the atmosphere in the form of gas under the action of agitation or aeration, resulting in both odorous substances and Microbial aerosol exhaust pollution. With the development of social economy, the improvement of living standards and the increasing awareness of the public environment, the pollution of odorous substances and microbial aerosols produced by municipal facilities such as urban sewage treatment plants, domestic waste treatment plants, and domestic waste transfer stations has become an urgent problem to be solved. primary issue.

生物处理技术是近几十年发展起来的一种用于废气处理、特别是恶臭气体处理的新技术。与常规的物化处理技术,如吸收、吸附、催化、焚烧等相比,生物处理技术具有处理效果好、无二次污染、投资和运行费用低、易于管理等优点,尤其在处理大流量、低浓度的废气时更能显示其优越性。生物处理技术的原理是利用微生物的代谢过程将废气中的污染物质降解或转化为无害或低害类物质。对于气量大、浓度低的废气,生物处理技术更为经济。研究资料表明,生物技术的投资和运行费用仅为物化处理技术的1/4~1/20。生物处理技术,特别是生物过滤技术,已经广泛应用于城市污水处理厂、生活垃圾处理厂和生活垃圾中转站等市政设施产生的恶臭物质和微生物气溶胶的处理。Biological treatment technology is a new technology developed in recent decades for waste gas treatment, especially malodorous gas treatment. Compared with conventional physical and chemical treatment technologies, such as absorption, adsorption, catalysis, incineration, etc., biological treatment technology has the advantages of good treatment effect, no secondary pollution, low investment and operation costs, easy management, etc., especially in the treatment of large flow, low It can show its superiority when the concentration of exhaust gas is high. The principle of biological treatment technology is to use the metabolic process of microorganisms to degrade or convert the pollutants in the exhaust gas into harmless or low-harm substances. For waste gas with large gas volume and low concentration, biological treatment technology is more economical. Research data show that the investment and operating costs of biotechnology are only 1/4 to 1/20 of that of physicochemical treatment technology. Biological treatment technology, especially biological filtration technology, has been widely used in the treatment of odorous substances and microbial aerosols produced by municipal facilities such as urban sewage treatment plants, domestic waste treatment plants and domestic waste transfer stations.

然而,生物过滤技术处理废气存在截留微生物气溶胶和逸散微生物气溶胶的双重作用,这是因为生物过滤设备是一种微生物固定化生长的系统,其中填充的高密度和高比表面积的填料可能截留进气中的微生物。而填料上附着生长有相当多的微生物,在气流的作用下,这些微生物有可能以气溶胶的形式逸出滤池而重新造成大气污染。However, there are dual functions of intercepting microbial aerosols and escaping microbial aerosols in the treatment of waste gas by biological filtration technology. Retains microorganisms in the intake air. There are quite a lot of microorganisms attached to the filler, and under the action of the airflow, these microorganisms may escape the filter in the form of aerosols and cause air pollution again.

紫外光催化氧化技术是一种将紫外光辐射(UV)和催化剂(如TiO2等)结合用以废气处理的方法。紫外光催化氧化技术以催化剂作为紫外光的吸收剂,产生电子/空穴对,诱发产生氧化活性基团,即在紫外光的激发下,催化剂光分解产生氧化能力更强的自由基(如·OH)与活性氧(·O),可以氧化许多微生物和单用氧化剂无法分解的难降解废气污染物。紫外光催化氧化技术在常温常压下即可进行氧化,不产生二次污染,能使多数不能或难以降解的有机污染物完全矿化,而且具有很强的杀灭微生物的能力。Ultraviolet photocatalytic oxidation technology is a method that combines ultraviolet radiation (UV) and catalysts (such as TiO 2 , etc.) for exhaust gas treatment. The ultraviolet photocatalytic oxidation technology uses the catalyst as the absorber of ultraviolet light to generate electron/hole pairs and induce the generation of oxidative active groups, that is, under the excitation of ultraviolet light, the catalyst photodecomposes to generate free radicals with stronger oxidation ability (such as OH) and active oxygen (·O), which can oxidize many microorganisms and refractory exhaust gas pollutants that cannot be decomposed by a single oxidant. Ultraviolet photocatalytic oxidation technology can be oxidized at normal temperature and pressure without secondary pollution, can completely mineralize most organic pollutants that cannot or are difficult to degrade, and has a strong ability to kill microorganisms.

城市污水处理厂、生活垃圾处理厂和生活垃圾中转站等市政设施产生的恶臭物质和微生物气溶胶污染影响范围广,处理难度大。虽然各种处理技术多种多样,但大部分技术尚未成熟和完善,存在着适应范围小,处理效果低,占地面积大等问题,或投资和运行费用高,管理操作复杂,易于产生二次污染等问题。因此,现今特别缺乏恶臭物质和微生物气溶胶同时去除的设备和技术。The malodorous substances and microbial aerosol pollution produced by municipal facilities such as urban sewage treatment plants, domestic waste treatment plants and domestic waste transfer stations have a wide range of influences and are difficult to deal with. Although there are various treatment technologies, most of them are not yet mature and perfect, and there are problems such as small adaptability, low treatment effect, large floor area, etc., or high investment and operation costs, complicated management and operation, and easy to produce secondary problems. pollution etc. Therefore, there is a special lack of equipment and technology for the simultaneous removal of malodorous substances and microbial aerosols.

发明内容Contents of the invention

考虑到以往的城市污水处理厂、生活垃圾处理厂和生活垃圾中转站等市政设施产生的恶臭和微生物气溶胶处理设备的不足和生物过滤、紫外光催化技术各自的优缺点,本发明提出一种同步去除恶臭物质和微生物气溶胶的设备,提高含恶臭物质和微生物气溶胶废气的处理效果,节省占地面积,节省投资和处理费用。Considering the stench produced by municipal facilities such as urban sewage treatment plants, domestic waste treatment plants and domestic waste transfer stations in the past, the shortage of microbial aerosol treatment equipment and the respective advantages and disadvantages of biological filtration and ultraviolet photocatalysis technology, the present invention proposes a The equipment for synchronous removal of malodorous substances and microbial aerosols can improve the treatment effect of waste gas containing malodorous substances and microbial aerosols, save floor space, save investment and treatment costs.

本发明的另一目的是提供本发明提出一种同步去除恶臭物质和微生物气溶胶的方法。Another object of the present invention is to provide a method for synchronously removing malodorous substances and microbial aerosols proposed by the present invention.

本发明的本发咀提出一种同步去除恶臭物质和微生物气溶胶的设备,由湿式洗涤区、生物过滤区、干燥区和紫外光催化反应区依次连接组成,含恶臭物质和微生物气溶胶的废气依次经过这四个区域,最后净化后的气体从紫外光催化反应区底部的出气口流出。其中:The hair nozzle of the present invention proposes a device for synchronously removing malodorous substances and microbial aerosols, which is composed of a wet washing area, a biological filtration area, a drying area, and an ultraviolet photocatalytic reaction area, and the waste gas containing malodorous substances and microbial aerosols After passing through these four areas in sequence, the finally purified gas flows out from the gas outlet at the bottom of the ultraviolet photocatalytic reaction area. in:

湿式洗涤区下部的侧壁上开有一进气口,在进气口处安装有穿孔管,在湿式洗涤区装有悬浮填料,湿式洗涤区上部的侧壁上开有一排水口。An air inlet is opened on the side wall of the lower part of the wet washing area, and a perforated pipe is installed at the air inlet, suspended filler is installed in the wet washing area, and a drain is opened on the side wall of the upper part of the wet washing area.

在生物过滤区内填充粒径小、孔隙率大的轻质活性聚氨酯生物填料,生物过滤区侧壁上开有营养液喷淋进口,在该营养液喷淋进口处安装有一连接营养液喷淋器的管路,该营养液喷淋器在生物过滤区填料的上方,营养液喷淋器通过管路定期喷淋营养液,营养液循环使用,底部支撑填料的是气体分布板,填料中的微生物以异养细菌和真菌为主。The biofiltration area is filled with light-weight active polyurethane biofillers with small particle size and large porosity. There is a nutrient solution spray inlet on the side wall of the biofiltration area, and a connecting nutrient solution spray is installed at the nutrient solution spray inlet. The pipeline of the nutrient solution sprayer is above the filler in the biofiltration area. The nutrient solution sprayer regularly sprays the nutrient solution through the pipeline, and the nutrient solution is recycled. The bottom supports the filler is a gas distribution plate, and the filler in the filler Microorganisms are dominated by heterotrophic bacteria and fungi.

干燥区内部装有干燥剂,干燥区与紫外光催化反应区相连。A desiccant is installed inside the drying area, and the drying area is connected with the ultraviolet photocatalytic reaction area.

紫外光触媒反应区由若干个紫外灯管组成,反应区内填充锐钛型纳米二氧化钛光触媒及涂层材料,形成光触媒过滤网层。The ultraviolet photocatalyst reaction area is composed of several ultraviolet lamp tubes, and the reaction area is filled with anatase nano-titanium dioxide photocatalyst and coating materials to form a photocatalyst filter layer.

本发明的本发明提出一种同步去除恶臭物质和微生物气溶胶的方法,含恶臭物质和微生物气溶胶的废气首先经过湿式洗涤区,气体得到加湿,同时部分水溶性好的恶臭物质得以去除,然后进入生物过滤区,生物过滤区内填充粒径小、孔隙率大的轻质活性生物填料,生物过滤区上部侧壁设管式营养液喷淋器,上部另一侧壁设出气管,出气管与干燥区连接;干燥区与紫外光触媒反应区连接,光触媒中的TiO2在紫外灯的照射下,产生出氧化力极强的氢氧基(·OH)与活性氧(·O),与恶臭物质发生反应,同时去除在生物过滤区未被去除的微生物气溶胶,净化后的无臭、无菌气体从出气口排出。The present invention proposes a method for synchronously removing malodorous substances and microbial aerosols. The waste gas containing malodorous substances and microbial aerosols first passes through the wet scrubbing area, the gas is humidified, and part of the malodorous substances with good water solubility is removed, and then Entering the biofiltration area, the biofiltration area is filled with light active biological fillers with small particle size and large porosity. The upper side wall of the biofiltration area is equipped with a tubular nutrient solution sprayer, and the other side wall of the upper part is equipped with an air outlet pipe. It is connected to the drying area; the drying area is connected to the ultraviolet photocatalyst reaction area, and the TiO 2 in the photocatalyst is irradiated by the ultraviolet lamp to produce highly oxidizing hydroxyl groups (·OH) and active oxygen (·O), and odor The substance reacts, and at the same time removes the microbial aerosol that has not been removed in the biofiltration area, and the purified odorless and sterile gas is discharged from the gas outlet.

本发明的设备具有如下优点:The equipment of the present invention has the following advantages:

1.将生物过滤和紫外光催化处理技术的优势结合,研制成一种联合生物过滤、紫外光催化技术同时去除城市市政设施产生的含恶臭和微生物气溶胶废气的设备。该设备结构紧凑,构造简洁,占地面积小,运行操作与维护简单,无二次污染。1. Combining the advantages of biological filtration and ultraviolet photocatalytic treatment technology, a device that combines biological filtration and ultraviolet photocatalytic technology to simultaneously remove odor and microbial aerosol waste gas generated by urban municipal facilities is developed. The equipment has compact structure, simple structure, small footprint, simple operation and maintenance, and no secondary pollution.

2.湿式洗涤区可以去除部分恶臭和微生物气溶胶,同时起到预加湿作用,减少了生物过滤区的加湿频率和负荷。2. The wet washing area can remove part of the odor and microbial aerosol, and at the same time play a role of pre-humidification, reducing the humidification frequency and load of the biological filtration area.

3.生物过滤一紫外光催化设备无需循环水,营养液为定期提供,能耗低,管理方便。3. Biological filtration-ultraviolet photocatalysis equipment does not need circulating water, and the nutrient solution is provided regularly, with low energy consumption and convenient management.

附图说明Description of drawings

图1.本发明设备的结构示意图。Fig. 1. Schematic diagram of the structure of the device of the present invention.

附图标记reference sign

1.进气口 2.穿孔管1. Air inlet 2. Perforated tube

3.湿式洗涤区 4.排水口3. Wet washing area 4. Outlet

5.气体分布板 6.生物过滤区5. Gas distribution plate 6. Biological filter area

7.生物过滤区填料 8.营养液喷淋进口7. Filling in biological filtration area 8. Nutrient solution spray inlet

9.营养液喷淋器 10.干燥区9. Nutrient solution sprayer 10. Drying area

11.紫外灯 12.光触媒滤网层11. Ultraviolet lamp 12. Photocatalyst filter layer

13.出气口13. Air outlet

具体实施方式Detailed ways

实施例1.Example 1.

请参见图1。有机玻璃制成的联合利用生物过滤、紫外光催化反应进行城市污水处理厂、生活垃圾处理厂和生活垃圾中转站等市政设施产生的含恶臭和微生物气溶胶废气处理的设备,其基本结构为圆柱体型,主要由湿式洗涤区3、生物过滤区6、干燥区10和紫外光催化反应区四个部分组成;See Figure 1. The equipment made of plexiglass combined with biological filtration and ultraviolet photocatalytic reaction is used to treat the malodorous and microbial aerosol waste gas produced by municipal facilities such as urban sewage treatment plants, domestic waste treatment plants and domestic waste transfer stations. Its basic structure is a cylinder Body shape, mainly composed of four parts: wet washing area 3, biological filtration area 6, drying area 10 and ultraviolet photocatalytic reaction area;

在湿式洗涤区3下部的侧壁上开有一进气口1,在进气口1处安装有穿孔管2,在湿式洗涤区3上部的侧壁上开有一排水口4;An air inlet 1 is opened on the side wall of the lower part of the wet washing area 3, and a perforated pipe 2 is installed at the air inlet 1, and a drain port 4 is opened on the side wall of the upper part of the wet washing area 3;

在生物过滤区6内装有轻质聚氨酯生物填料7,在生物过滤区的侧壁上开有喷淋营养液液进口8,在该营养液喷淋进口处安装有一连接营养液喷淋器9的管路,该营养液喷淋器9在生物过滤区填料的上方;填料中的微生物以异养细菌和真菌为主;营养液喷淋器9通过管路定期喷淋营养液;Lightweight polyurethane biofiller 7 is housed in biofiltration area 6, has spray nutrient solution liquid inlet 8 on the side wall of biofiltration area, and a connection nutrient solution sprayer 9 is installed at this nutrient solution spray inlet Pipeline, the nutrient solution sprayer 9 is above the filler in the biofiltration area; the microorganisms in the filler are mainly heterotrophic bacteria and fungi; the nutrient solution sprayer 9 regularly sprays the nutrient solution through the pipeline;

在紫外光催化反应区内设若干只紫外灯管11,填充锐钛型纳米二氧化钛光触媒及涂层材料,形成光触媒过滤网层12。Several ultraviolet lamp tubes 11 are arranged in the ultraviolet photocatalytic reaction area, filled with anatase nano-titanium dioxide photocatalyst and coating materials to form a photocatalyst filter net layer 12 .

城市污水处理厂、生活垃圾处理厂和生活垃圾中转站等市政设施产生的含恶臭和微生物气溶胶的废气从气体加湿区3下部的进气口1经由气体穿孔管2进入湿式洗涤区3,气体得到加湿,同时部分水溶性好的恶臭物质得以去除,然后进入生物过滤区6,生物过滤区6内填充高密度、孔径小的活性生物填料7,易于微生物挂膜、生长,同时易于截留进气中的微生物气溶胶,之后经干燥区10的干燥剂干燥后进入紫外光催化反应区,在紫外线的作用下与恶臭气体发生反应,同时去除生物过滤区6未被去除的微生物气溶胶,净化后的无臭、无菌气体从出气口13排出,多余的加湿液从底部的排水口4排出。The waste gas containing malodorous and microbial aerosols produced by municipal facilities such as urban sewage treatment plants, domestic waste treatment plants and domestic waste transfer stations enters the wet scrubbing area 3 through the gas perforated pipe 2 through the air inlet 1 at the lower part of the gas humidification area 3, and the gas Humidification is obtained, and part of the odorous substances with good water solubility is removed, and then enters the biofiltration area 6, which is filled with high-density, small-pore active biological filler 7, which is easy for microorganisms to form films and grow, and at the same time, it is easy to intercept air intake The microbial aerosol in the drying zone 10 is then dried by the desiccant in the drying zone 10 and then enters the ultraviolet photocatalytic reaction zone, reacts with the malodorous gas under the action of ultraviolet rays, and simultaneously removes the microbial aerosol that has not been removed in the biological filter zone 6, and after purification The odorless and sterile gas is discharged from the air outlet 13, and the excess humidifying liquid is discharged from the drain 4 at the bottom.

根据本方法建立了处理量为5000m3/h的城市污水厂污泥脱水间的含恶臭和微生物气溶胶的废气处理设备,进气硫化氢、氨、异养细菌和真菌气溶胶浓度分别为4.3mg/m3,10.5mg/m3,9000~11000mg/m3和5000~6000mg/m3的城市污水厂气体,停留时间为40s,室温条件下操作时,出气口的硫化氢和氨分别为0mg/m3和0.02mg/m3,去除率分别为100%和99.8%,出气中的异养细菌和真菌未检出,去除率均为100%。According to this method, waste gas treatment equipment containing stench and microbial aerosol in the sludge dehydration room of urban sewage plant with a treatment capacity of 5000m 3 /h was established. The concentrations of hydrogen sulfide, ammonia, heterotrophic bacteria and fungal aerosol in the intake air were 4.3 mg/m 3 , 10.5mg/m 3 , 9000-11000mg/m 3 and 5000-6000mg/m 3 urban sewage plant gas, the residence time is 40s, when operating at room temperature, the hydrogen sulfide and ammonia at the gas outlet are respectively 0mg/m 3 and 0.02mg/m 3 , the removal rates were 100% and 99.8% respectively, and the heterotrophic bacteria and fungi in the outgas were not detected, and the removal rates were 100%.

Claims (2)

1.一种同步去除恶臭物质和微生物气溶胶的方法,其特征在于:同步去除恶臭物质和微生物气溶胶的设备由湿式洗涤区、生物过滤区、干燥区和紫外光触媒反应区依次连接组成,其中湿式洗涤区下部的侧壁上开有一进气口,在进气口处安装有穿孔管,在湿式洗涤区上部的侧壁上开有一排水口,生物过滤区内填充粒径小、孔隙率大的轻质活性生物填料,侧壁上开有喷淋液进口,在该喷淋液进口处安装有一连接营养液喷淋器的管路,该营养液喷淋器在生物过滤区填料的上方,所述的干燥区内部装有干燥剂,干燥区与紫外光触媒反应区相连接,所述的紫外光触媒反应区由若干个紫外灯管组成,同时填充锐钛型纳米二氧化钛光触媒及涂层材料,形成光触媒过滤网层,风机设置在整套设备的最后面;1. A method for synchronously removing malodorous substances and microbial aerosols, characterized in that: the equipment for synchronously removing malodorous substances and microbial aerosols is composed of wet washing areas, biological filter areas, drying areas and ultraviolet photocatalyst reaction areas, wherein There is an air inlet on the side wall of the lower part of the wet washing area, and a perforated pipe is installed at the air inlet, and a drain is opened on the side wall of the upper part of the wet washing area. The filling particle size in the biological filtration area is small and the porosity is large. There is a spray liquid inlet on the side wall, and a pipeline connected to the nutrient solution sprayer is installed at the spray liquid inlet. The nutrient solution sprayer is above the filler in the biological filter area. The inside of the drying area is equipped with a desiccant, and the drying area is connected with the ultraviolet photocatalyst reaction area. The ultraviolet photocatalyst reaction area is composed of several ultraviolet lamp tubes, and is filled with anatase nano-titanium dioxide photocatalyst and coating materials at the same time, forming The photocatalyst filter layer, the fan is set at the end of the whole set of equipment; 所述的湿式洗涤区内填充填料,内设液体液面指示计,保证液面高度高于气体进气口,低于排水口;The wet washing area is filled with fillers, and a liquid level indicator is installed inside to ensure that the liquid level is higher than the gas inlet and lower than the drain; 所述的生物过滤区内填充的填料为轻质聚氨酯活性生物填料,填料粒径为2~3cm,孔隙率为96%~98%,利于废气处理微生物挂膜、废气处理和进气微生物气溶胶的吸附和截留,生物过滤区底部为多孔的填料支撑板,孔径为3~5mm,兼有布气功能;The filler filled in the biological filter area is a light polyurethane active biological filler, the filler particle size is 2-3cm, and the porosity is 96%-98%, which is beneficial to waste gas treatment of microbial film formation, waste gas treatment and intake microbial aerosol The bottom of the biological filtration area is a porous packing support plate with a pore size of 3-5mm, which also has the function of air distribution; 同步去除恶臭物质和微生物气溶胶的方法步骤在于:含有恶臭和微生物气溶胶的城市污水厂气体首先经过湿式洗涤区,气体得到加湿,同时部分水溶性好的恶臭物质和微生物气溶胶得以去除,然后进入生物过滤区,生物过滤区内填充的活性生物填料,易于微生物挂膜、生长,同时易于截留进气中的微生物气溶胶,之后经干燥区干燥后进入紫外光触媒反应区内,光触媒中的TiO2在紫外线的照射下,产生出氧化力极强的氢氧基(·OH)与活性氧(·O),恶臭气体发生反应,同时去除生物过滤区未被去除的微生物气溶胶,净化后的气体从排气口排出,风机置于设备后面,保证设备处于负压状态,避免含恶臭和微生物气溶胶的气体泄漏;The steps of the method for synchronously removing malodorous substances and microbial aerosols are as follows: firstly, the gas from the urban sewage plant containing malodorous and microbial aerosols passes through the wet scrubbing area, the gas is humidified, and at the same time, part of the malodorous substances and microbial aerosols with good water solubility are removed, and then Entering the biofiltration area, the active biological filler filled in the biofiltration area is easy for microorganisms to form a film and grow, and at the same time it is easy to intercept the microbial aerosol in the intake air, and then enter the ultraviolet photocatalyst reaction area after being dried in the drying area, where the TiO in the photocatalyst 2 Under the irradiation of ultraviolet rays, hydroxyl groups (·OH) with strong oxidizing power are produced to react with active oxygen (·O), and odorous gases are reacted, and microbial aerosols that have not been removed in the biological filter area are removed at the same time, and the purified The gas is discharged from the exhaust port, and the fan is placed behind the equipment to ensure that the equipment is in a negative pressure state and avoid the leakage of gas containing stench and microbial aerosol; 所述的生物过滤区顶部安装营养液喷淋器,通过管路定期喷淋营养液,过量的营养液进入湿式洗涤区,高于液面指示计设定液面的多余营养液由排水口排出,生物过滤区内设置在线pH和湿含量监测探头,并与喷淋设备形成反馈控制,保证填料pH和湿含量分别在6~9和40~60%。A nutrient solution sprayer is installed on the top of the biological filtration area, and the nutrient solution is regularly sprayed through the pipeline, and the excess nutrient solution enters the wet washing area, and the excess nutrient solution that is higher than the liquid level set by the liquid level indicator is discharged from the drain , Set online pH and moisture content monitoring probes in the biological filtration area, and form feedback control with spray equipment to ensure that the pH and moisture content of the filler are 6-9 and 40-60% respectively. 2.根据权利要求1所述的方法,其特征是:经过干燥区干燥后的气体进入紫外光触媒反应区,紫外灯产生的紫外线波长为253nm,辐射强度为1200μm/cm2,反应温度为0~50℃,反应压力为常压,反应时间5~10s,能有效去除微生物气溶胶及前一阶段未去除的恶臭物质。2. The method according to claim 1, characterized in that: the gas dried in the drying zone enters the ultraviolet photocatalyst reaction zone, the wavelength of ultraviolet light generated by the ultraviolet lamp is 253nm, the radiation intensity is 1200μm/cm 2 , and the reaction temperature is 0~ 50°C, the reaction pressure is normal pressure, and the reaction time is 5-10s, which can effectively remove microbial aerosols and odorous substances that were not removed in the previous stage.
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