CN115594355A - Photoelectrocatalysis water purification treatment system and method for pollutant in-situ degradation - Google Patents

Abstract

Translated fromChinese

本发明属于城市黑臭水体以及湖库等水环境修复和富营养化防治、PPCPs(新兴污染物)原位降解领域，具体涉及一种污染物原位降解光电催化净水处理系统及方法。该系统由挺水植物、光催材料、复合微生物燃料电池工作原理以及生物电芬顿技术组成，包括浮板、光催化板、阴阳电极、外接电阻、铁碳微电解填料等部分组成。本发明在MFC工作原理的基础上引入挺水植物、光催化材料以及生物电芬顿技术，用于水体原位修复以及污染物去除同步产电。实现污染物去除同步产电、水处理零外部供能以及水环境原位修复三大效果。

The invention belongs to the field of urban black and odorous water bodies and lakes and other water environment restoration and eutrophication prevention and control, and in-situ degradation of PPCPs (emerging pollutants), and specifically relates to a photoelectric catalytic water purification treatment system and method for in-situ degradation of pollutants. The system consists of emergent plants, photocatalytic materials, the working principle of composite microbial fuel cells and bioelectric Fenton technology, including floating plates, photocatalytic plates, cathode and anode electrodes, external resistors, iron-carbon micro-electrolysis fillers and other components. The invention introduces emergent plants, photocatalytic materials and bioelectric Fenton technology on the basis of the working principle of the MFC, and is used for in-situ restoration of water bodies and synchronous power generation for pollutant removal. Realize the three major effects of simultaneous power generation for pollutant removal, zero external energy supply for water treatment, and in-situ restoration of the water environment.

Description

Translated fromChinese

一种污染物原位降解光电催化净水处理系统及方法Photoelectric catalytic water purification treatment system and method for in-situ degradation of pollutants

技术领域technical field

本发明是属于城市黑臭水体以及湖库等水环境修复和富营养化防治、PPCPs(新兴污染物)原位降解领域，具体涉及一种污染物原位降解光电催化净水处理系统及方法。The invention belongs to the fields of urban black and odorous water bodies and lakes and other water environment restoration and eutrophication prevention and control, and in-situ degradation of PPCPs (emerging pollutants), and specifically relates to a photoelectric catalytic water purification treatment system and method for in-situ degradation of pollutants.

背景技术Background technique

随着经济的发展、城市化进程的加快，大量生活污水与工业废水、农业面源污染等冲刷入河，导致越来越多的河湖库等地表水体完全丧失特有的生态功能，出现不同程度的城市黑臭和湖库水体富营养化，严重妨碍水体的资源利用，制约周边城镇经济发展及居民饮水安全，甚至导致水生生态系统的奔溃，对人类健康以及环境安全造成严重威胁。城市地表水体的污染物主要来源分为外源和内源污染，其中内源污染是外源污染长期排入，致使底泥中累积了大量氮磷有机物、重金属等有毒有害物质，成为了污染物质迁移转化的载体和蓄积库，此外，河道底泥与上覆水之间存在动态平衡关系，每时每刻进行物质和能量交换，内源治理不彻底，城市水体污染难以彻底去除。加上常规废水处理能耗高造成巨大的能源问题，现急需一种可以有效缓解水环境污染和能源危机双重困境的水处理技术。With the development of the economy and the acceleration of urbanization, a large amount of domestic sewage, industrial wastewater, and agricultural non-point source pollution have been washed into the river, causing more and more surface water bodies such as rivers, lakes, and reservoirs to completely lose their unique ecological functions. The black and odorous cities and the eutrophication of lakes and reservoirs seriously hinder the utilization of water resources, restrict the economic development of surrounding towns and the safety of drinking water for residents, and even lead to the collapse of aquatic ecosystems, posing a serious threat to human health and environmental safety. The main sources of pollutants in urban surface water are divided into exogenous and endogenous pollution. The endogenous pollution is the long-term discharge of exogenous pollution, resulting in the accumulation of a large amount of toxic and harmful substances such as nitrogen, phosphorus, organic matter, and heavy metals in the sediment, which have become pollutants. In addition, there is a dynamic equilibrium relationship between the river sediment and the overlying water, and material and energy are exchanged every moment. The internal source control is not thorough, and urban water pollution is difficult to completely remove. In addition, the high energy consumption of conventional wastewater treatment has caused huge energy problems. There is an urgent need for a water treatment technology that can effectively alleviate the dual dilemma of water pollution and energy crisis.

微生物燃料电池(MFC)技术是一种可以同步实现污染物原位降解和产电的水污染治理技术。以胞外产电菌为源动力，通过生物代谢过程氧化污染物中的有机物，将生物质能直接转化为电能，该技术在降解污染物的同时，实现了污染物中潜在能源的产电转化，符合污染物资源化利用的可持续发展理念。但目前单独的MFC在实际应用中受到低产电密度限制。将MFC与其他技术耦合，不仅可以克服MFC的不足，实现电量的原位应用，又可以提高耦合体系的水处理能力。但现有技术中对于MFC与其他技术耦合研究较少。Microbial fuel cell (MFC) technology is a water pollution control technology that can simultaneously realize in-situ degradation of pollutants and electricity generation. Using extracellular electrogenic bacteria as the source power, the organic matter in the pollutants is oxidized through the biological metabolic process, and the biomass energy is directly converted into electrical energy. This technology realizes the conversion of potential energy in the pollutants while degrading the pollutants. , in line with the concept of sustainable development of pollutant resource utilization. However, the current single MFC is limited by the low production density in practical applications. Coupling MFC with other technologies can not only overcome the shortcomings of MFC, realize the in-situ application of electricity, but also improve the water treatment capacity of the coupling system. However, there are few studies on the coupling of MFC and other technologies in the prior art.

发明内容Contents of the invention

本发明为解决上述问题，在MFC工作原理的基础上引入挺水植物、光催化材料以及生物电芬顿技术，用于水体原位修复以及污染物去除同步产电。实现污染物去除同步产电、水处理零外部供能以及水环境原位修复三大效果。具体技术方案如下：In order to solve the above problems, the present invention introduces emergent plants, photocatalytic materials and bioelectric Fenton technology on the basis of the working principle of MFC for in-situ restoration of water bodies and synchronous electricity generation for pollutant removal. Realize the three major effects of pollutant removal and simultaneous power generation, zero external energy supply for water treatment, and in-situ restoration of the water environment. The specific technical scheme is as follows:

一种污染物原位降解光电催化净水处理系统，包括浮板，所述浮板包括格栅以及载体种植槽，载体种植槽为可拆卸浮床种植篮，在浮床种植篮装有固定填料并种植挺水植物；在所述浮板外侧由导线连接设置光催化板，在所述光催化板下放设置阴极，阴极浸于受污染水体的液面表面处，通过导线及电阻连接至阳极，所述阳极通过连接线固定浸没在受污染水体底部的厌氧底泥中；在所述浮板下方悬挂设置有铁碳微电解镂空填料球，在填料球内装设铁碳微电解填料。A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants, including a floating plate, the floating plate includes a grid and a carrier planting tank, the carrier planting tank is a detachable floating bed planting basket, and the floating bed planting basket is equipped with fixed fillers and planted Emergent plants; a photocatalytic plate is connected by wires on the outside of the floating plate, and a cathode is placed under the photocatalytic plate. The cathode is immersed in the liquid surface of the polluted water body and connected to the anode through a wire and a resistor. The anode is fixed and submerged in the anaerobic sediment at the bottom of the polluted water body through the connecting wire; iron-carbon micro-electrolysis hollow filler balls are suspended below the floating plate, and iron-carbon micro-electrolysis fillers are installed in the filler balls.

进一步的，所述光催化板采用金属半导体材料、非金属半导体材料或复合半导体材料。Further, the photocatalytic plate adopts metal semiconductor material, non-metal semiconductor material or compound semiconductor material.

进一步的，所述光催化板为TiO2/Fe2O3复合光电极，TiO2光电极，In2TiO5光电极，g-C3N4光电极中的一种。Further, the photocatalytic plate is one of TiO2/Fe2O3 composite photoelectrode, TiO2 photoelectrode, In2TiO5 photoelectrode, and g-C3N4 photoelectrode.

进一步的，所述挺水植物为美人蕉、菖蒲或水蕹菜。Further, the emergent plants are canna, calamus or water spinach.

进一步的，所述铁碳微电解填料用不锈钢网包裹，置于铁碳微电解镂空填料球中。Further, the iron-carbon micro-electrolysis filler is wrapped with stainless steel mesh and placed in the iron-carbon micro-electrolysis hollow filler ball.

进一步的，所述阴极、阳极为石墨毡、碳毡或不锈钢丝网包裹活性炭颗粒中的一种或几种，厚度为5mm～20mm。Further, the cathode and the anode are one or more of activated carbon particles wrapped in graphite felt, carbon felt or stainless steel mesh, with a thickness of 5 mm to 20 mm.

进一步的，所述阴极、阳极、导线及外接电阻之间的连接均使用鳄鱼夹或金属连接器；连接阴极和阳极的导线将从阴阳极材料的中央穿过；所述导线为铜丝或钛丝；所述外接电阻的阻值为200Ω～1000Ω。Further, alligator clips or metal connectors are used for the connection between the cathode, anode, wire and external resistance; the wire connecting the cathode and the anode will pass through the center of the cathode and anode materials; the wire is copper wire or titanium wire; the resistance of the external resistor is 200Ω-1000Ω.

本发明还提采用前述净水处理系统的处理方法将所述系统至于受污染需修复水体中，将所述阳极置于受污染水体底部5cm～8cm处的厌氧底泥中。The present invention also proposes using the treatment method of the aforementioned water purification treatment system to place the system in the polluted water body to be repaired, and place the anode in the anaerobic sediment at the bottom 5cm-8cm of the polluted water body.

进一步的，所述挺水植物的种植密度为8株/平方米～15株/平方米。Further, the planting density of the emergent plants is 8 to 15 plants/square meter.

本发明通过利用挺水植物、光催化高分子材料、微生物燃料电池工作原理以及生物电芬顿技术对城市黑臭水体以及湖库等进行水环境修复，进一步降解水体中PPCPs的浓度，提高水质净化效率。挺水植物通过将氧气输送至根部，形成好氧环境，为微生物的生长提供适宜的环境，从而降解废水中的污染物；光催化材料在太阳光的激发下，产生电子与空穴，空穴与氢氧根结合生成羟基自由基，电子与氧气结合生成超氧自由基，同时，通过提高光催化材料的比表面积，可吸附大量污染物，将吸附在光催化材料表面的污染物氧化成二氧化碳，水等无机小分子，从而达到净化环境的目的；生物电芬顿技术利用微生物燃料电池系统阳极微生物氧化有机物产生电子，将生物质能直接转化为电能，形成水体生物微电芬顿环境，无需外部能量输入，去除废水中的污染物以及PPCPs等。最终实现水处理零外部供能以及提高水环境原位修复效果，通过生物代谢过程氧化污染物中的有机物。The present invention uses emergent plants, photocatalytic polymer materials, working principles of microbial fuel cells, and bioelectric Fenton technology to restore the water environment of urban black and odorous water bodies and lakes and reservoirs, further degrades the concentration of PPCPs in water bodies, and improves water quality purification. efficiency. Emergent plants form an aerobic environment by transporting oxygen to their roots, providing a suitable environment for the growth of microorganisms, thereby degrading pollutants in wastewater; photocatalytic materials are excited by sunlight to generate electrons and holes, holes Combine with hydroxide to generate hydroxyl radicals, and electrons combine with oxygen to generate superoxide radicals. At the same time, by increasing the specific surface area of the photocatalytic material, it can absorb a large amount of pollutants and oxidize the pollutants adsorbed on the surface of the photocatalytic material into carbon dioxide. , water and other inorganic small molecules, so as to achieve the purpose of purifying the environment; the bioelectric Fenton technology uses the anode microorganisms of the microbial fuel cell system to oxidize organic matter to generate electrons, and directly converts biomass energy into electrical energy to form a water bioelectric Fenton environment without the need External energy input to remove pollutants and PPCPs in wastewater, etc. Ultimately realize zero external energy supply for water treatment and improve the effect of in-situ restoration of the water environment, and oxidize organic matter in pollutants through biological metabolic processes.

与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:

1.构建一种污染物原位降解光电催化无动力净水技术，提高受损水体中污染物去除率。本发明相比于传统水处理技术，在MFC工作原理的基础上，通过挺水植物、光催化材料以及生物电芬顿原理的协同作用，胞外产电菌在无氧状态下氧化有机物产生电子同时降解有机污染物，挺水植物的根部分泌的酶可以促进污染物降解，同时通过引入铁碳微电解环境以及光催化高分子材料，实现持久性污染物的高效降解，最终实现协同净化功能。解决了水环境原位修复和治理能耗高的情况，有效降低水体中污染物浓度和PPCPs的含量，推动实现可再生能源利用和污水处理零能耗技术。1. Construct a photoelectric catalytic unpowered water purification technology for in-situ degradation of pollutants to improve the removal rate of pollutants in damaged water bodies. Compared with the traditional water treatment technology, the present invention, on the basis of the working principle of MFC, through the synergistic effect of emergent plants, photocatalytic materials and bioelectrical Fenton principle, extracellular electrogenic bacteria oxidize organic matter to generate electrons in anaerobic state At the same time, organic pollutants are degraded, and the enzymes secreted by the roots of emergent plants can promote the degradation of pollutants. At the same time, by introducing iron-carbon micro-electrolysis environment and photocatalytic polymer materials, the efficient degradation of persistent pollutants can be achieved, and finally the synergistic purification function can be realized. It solves the high energy consumption of in-situ restoration and treatment of the water environment, effectively reduces the concentration of pollutants and the content of PPCPs in the water body, and promotes the realization of renewable energy utilization and zero-energy consumption technologies for sewage treatment.

2.通过引入挺水植物、光催化材料以及生物电芬顿技术，有效改善的水质净化效率和能源利用率，提高太阳光利用率，强化降解能力。2. Through the introduction of emergent plants, photocatalytic materials and bioelectric Fenton technology, the water purification efficiency and energy utilization rate can be effectively improved, the utilization rate of sunlight can be improved, and the degradation ability can be strengthened.

3.利用挺水植物作为浮床植物，不仅可以协同净化水体，而且无二次污染，增加了景观效益，优化生态环境。实施过程和后续效果中，不仅对人体和生态环境无伤害，而且还可以美化水域景观，对水生生物也起到了促进作用。3. Utilizing emergent plants as floating bed plants can not only purify the water body synergistically, but also avoid secondary pollution, increase landscape benefits and optimize the ecological environment. During the implementation process and subsequent effects, not only is there no harm to the human body and the ecological environment, but it can also beautify the water landscape and promote aquatic organisms.

附图说明Description of drawings

图1本发明小试装置结构示意图；Fig. 1 small test device structural representation of the present invention;

图2本发明小试装置俯视图；Fig. 2 top view of small test device of the present invention;

附图标记：1、光催化板，2、阴极，3、铁碳微电解镂空填料球，4、定值电阻，5、导线，6、阳极，7、挺水植物，8、微生物，9、厌氧底泥。Reference signs: 1, photocatalytic plate, 2, cathode, 3, iron-carbon micro-electrolysis hollow filler ball, 4, fixed value resistor, 5, wire, 6, anode, 7, emergent plant, 8, microorganism, 9, Anaerobic sediment.

具体实施方式detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

如图1-2所示，一种污染物原位降解光电催化净水处理系统，其特征在于：包括浮板，所述浮板包括格栅以及载体种植槽，载体种植槽为可拆卸浮床种植篮，在浮床种植篮装有固定填料并种植挺水植物7；在所述浮板外侧由导线连接设置光催化板1，在所述光催化板下放设置阴极2，阴极浸于受污染水体的液面表面处，通过导线5及电阻4连接至阳极6，所述阳极通过连接线固定浸没在受污染水体底部的厌氧底泥9中；在所述浮板下方悬挂设置有铁碳微电解镂空填料球3，在填料球内装设铁碳微电解填料。As shown in Figure 1-2, a photoelectric catalytic water purification treatment system for in-situ degradation of pollutants is characterized in that it includes a floating plate, the floating plate includes a grid and a carrier planting tank, and the carrier planting tank is a detachable floating bed planting Basket, the floating bed planting basket is equipped with fixed fillers and planted emergent plants 7; aphotocatalytic plate 1 is connected by a wire outside the floating plate, and acathode 2 is placed under the photocatalytic plate, and the cathode is immersed in the polluted water body. At the surface of the liquid surface, it is connected to theanode 6 through thewire 5 and theresistance 4, and the anode is fixed and immersed in theanaerobic sediment 9 at the bottom of the polluted water body through the connecting wire; an iron-carbon micro-electrolysis device is suspended below the floating plate Hollowfiller ball 3, iron-carbon micro-electrolytic filler is installed in the filler ball.

采用小试试验进行，设置试验装置(长方体，长40，宽20，高50cm)，试验装置运行的平均温度为30±5℃，采样孔建立在距离反应器底部5、10、20和30厘米的高度，整个容器体积为40L，用黑色塑料包裹整个试验装置，以防止藻类生长。Adopt small-scale test to carry out, set up test device (cuboid, length 40, width 20, height 50cm), the average temperature of test device operation is 30 ± 5 ℃, sampling hole is set up atdistance reactor bottom 5, 10, 20 and 30 centimeters The height of the whole container is 40L, and the whole test device is wrapped with black plastic to prevent the growth of algae.

实施例一Embodiment one

在小试反应试验装置的底部中装入10cm的污泥，向其中加入废水进行模拟，在上覆水表面放置格栅以及载体种植槽，载体种植槽内装有石英砂，再将挺水种植在漂浮载体种植槽中，在挺水植物周围设置高分子光催化材料，通过连接线将其连接，搁置在阴极表面，在底泥5cm处设置阳极，以便于污染物富集，导线穿过阳极，经过外接电阻连接到阴极实现闭环电路，同时在阴极下悬挂铁碳微电解格栅以及铁碳微电解填料，构建铁碳微电解环境，其中铁碳微电解填料用不锈钢包裹，置于铁碳微电解格栅中。挺水植物主要为美人蕉、菖蒲以2∶1的比例种植在漂浮载体种植槽上。底泥为猪场厌氧硝化污泥，将底泥采集回来之后均匀混合，对污泥进行杂草、石子等去除，进行自然沉降24小时后密闭遮光储存在小试反应器内。废水为猪场进行沼气池厌氧处理后的污水。光催化材料选用复合半导体材料(TiO₂/Fe₂O₃复合材料)。阴、阳极选用为碳毡。外接导线为钛丝。外接电阻为1000Ω的定值电阻。Put 10cm of sludge into the bottom of the small-scale reaction test device, add wastewater to it for simulation, place grids and carrier planting tanks on the surface of the overlying water, and the carrier planting tanks are filled with quartz sand, and then plant the emerging water on the floating In the carrier planting tank, set polymer photocatalytic materials around the emergent plants, connect them through connecting wires, place them on the surface of the cathode, and set the anode at 5 cm from the bottom mud to facilitate the enrichment of pollutants. The wire passes through the anode, passes through An external resistor is connected to the cathode to realize a closed-loop circuit. At the same time, an iron-carbon micro-electrolysis grid and an iron-carbon micro-electrolysis filler are suspended under the cathode to build an iron-carbon micro-electrolysis environment. The iron-carbon micro-electrolysis filler is wrapped in stainless steel and placed in the iron-carbon micro-electrolysis in the grille. Emergent plants are mainly canna and calamus planted on the floating carrier planting tank at a ratio of 2:1. The bottom sludge is anaerobic nitrification sludge from pig farms. The bottom sludge is collected and mixed evenly. Weeds and stones are removed from the sludge. After natural settlement for 24 hours, it is sealed and stored in a small test reactor. The waste water is the sewage after anaerobic treatment in the biogas tank of the pig farm. The photocatalytic material is a composite semiconductor material (TiO₂ /Fe₂ O₃ composite material). The cathode and anode are selected as carbon felt. The external wire is titanium wire. The external resistance is a fixed value resistance of 1000Ω.

采用该种小试进行水质修复，对废水中的COD、氨氮、TP、PPCPs(选用土霉素以及四环素作为代表污染物)浓度进行研究，废水中COD的初始浓度在324-708mg L^-1之间变化，氨氮的初始浓度在158-284mg L^-1，TP的初始浓度在24-35mg L^-1，土霉素的初始浓度在86-221mg L^-1，四环素的初始浓度约为21-33.2mg L^-1，为了减少日变化对去除效率的影响，在当地时间10:00，每两天采集一次样品，同时记录系统运行、环境温度和天气。通过每日测量COD、氨氮、TP、土霉素以及四环素浓度来测定废水处理性能。实验结果表明，采用该小试装置后，经过两天稳定处理，平均出水浓度中，COD的浓度为102.7mg L^-1，氨氮的浓度为56.8mgL^-1，TP的浓度为1.73mg L^-1，该项技术针对于COD的平均去除效果为80％，氨氮去除率约为74％，TP去除率高达94％，土霉素的去除效果约为97.3％，四环素去除率约为98.3％。This kind of small test is used for water quality restoration, and the concentration of COD, ammonia nitrogen, TP, PPCPs (oxytetracycline and tetracycline are selected as representative pollutants) in the wastewater is studied. The initial concentration of COD in the wastewater is between 324-708mg L^-1 The initial concentration of ammonia nitrogen is 158-284mg L^-1 , the initial concentration of TP is 24-35mg L^-1 , the initial concentration of oxytetracycline is 86-221mg L^-1 , the initial concentration of tetracycline is about 21-33.2 mg L^-1 , in order to reduce the influence of diurnal variation on the removal efficiency, samples were collected every two days at 10:00 local time, and the system operation, ambient temperature and weather were recorded at the same time. Wastewater treatment performance was determined by daily measurements of COD, ammonia nitrogen, TP, oxytetracycline, and tetracycline concentrations. The experimental results show that after two days of stable treatment with this small test device, the average effluent concentration includes COD concentration of 102.7mg L^-1 , ammonia nitrogen concentration of 56.8mgL^-1 , and TP concentration of 1.73mg L^-1 , The average removal effect of this technology for COD is 80%, the removal rate of ammonia nitrogen is about 74%, the removal rate of TP is as high as 94%, the removal effect of oxytetracycline is about 97.3%, and the removal rate of tetracycline is about 98.3%.

实施例二Embodiment two

在小试反应试验装置的底部中装入15cm的污泥，污泥取自去除杂草、石子后河道底泥，进行自然沉降24小时后密闭遮光储存在小试反应器内。向装置中加入生活废水进行模拟，在水体表面放置浮板(包含载体种植槽以及格栅)，并在浮板中种植菖蒲，将金属半导体材料(TiO₂)作为高分子光催化材料富集在阴极表面，将阳极设置于距底泥上端5cm处，石墨毡作为阴阳极材料，钛丝作为导线穿过阳极，经过外接电阻(500Ω的定值电阻)连接到阴极，实现稳定产电，同时在阴极下构建铁碳微电解环境(构建方式如实施例一所述)。Put 15cm of sludge into the bottom of the small-scale reaction test device. The sludge is taken from the river bottom mud after removing weeds and stones. After natural settlement for 24 hours, it is sealed and stored in the small-scale reactor. Add domestic wastewater to the device for simulation, place a floating plate (including carrier planting tanks and grids) on the surface of the water body, and plant calamus in the floating plate, and enrich the metal semiconductor material (TiO₂ ) as a polymer photocatalytic material in the On the surface of the cathode, the anode is placed 5cm away from the upper end of the bottom mud, graphite felt is used as the cathode and anode material, titanium wire is used as a wire to pass through the anode, and connected to the cathode through an external resistor (500Ω fixed value resistor) to achieve stable electricity production. An iron-carbon micro-electrolysis environment is constructed under the cathode (the construction method is as described in Example 1).

采用该种方案模拟生活污水直排河道形成黑臭水体水质修复，对废水中的典型污染物浓度进行研究，PPCPs(新兴污染物)中主要测定磺胺类抗生素以及四环素浓度，污水中COD的浓度在142-350mg L^-1之间变化，氨氮的初始浓度在23-48mg L^-1，TP的初始浓度在3-6mg L^-1，磺胺类抗生素的初始浓度在120-520ng L^-1，四环素的初始浓度约为180-600ng L^-1，为了减少日变化对去除效率的影响，在当地时间8:00，每两天采集一次样品，同时记录系统运行、环境温度和天气。通过每日测量各种物质的浓度来测定废水处理性能。实验结果表明，采用该技术后，经过两天稳定处理，结果表明，COD的平均去除效果为89.67％，氨氮去除率约为78％，TP去除率高达97％，磺胺类抗生素的去除效果约为96％以及四环素去除率约为97％。This scheme is used to simulate the black and odorous water quality restoration of domestic sewage directly discharged into the river, and the concentration of typical pollutants in wastewater is studied. The concentration of sulfonamide antibiotics and tetracycline in PPCPs (emerging pollutants) is mainly determined. The concentration of COD in sewage is in 142-350mg L^-1 , the initial concentration of ammonia nitrogen is 23-48mg L^-1 , the initial concentration of TP is 3-6mg L^{-1 , the initial concentration of sulfa antibiotics is 120-520ng L -1,} the initial concentration of tetracycline The initial concentration is about 180-600ng L^-1 , in order to reduce the influence of diurnal variation on the removal efficiency, samples are collected every two days at 8:00 local time, and the system operation, ambient temperature and weather are recorded at the same time. Wastewater treatment performance was determined by daily measurement of the concentration of various substances. The experimental results show that after using this technology, after two days of stable treatment, the results show that the average removal effect of COD is 89.67%, the removal rate of ammonia nitrogen is about 78%, the removal rate of TP is as high as 97%, and the removal effect of sulfa antibiotics is about 96% and about 97% removal of tetracycline.

上面对本专利的较佳实施方式作了详细说明，但是本专利并不限于上述实施方式，在本领域的普通技术人员所具备的知识范围内，还可以在不脱离本专利宗旨的前提下作出各种变化。The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation. Within the scope of knowledge of those of ordinary skill in the art, various implementations can be made without departing from the purpose of this patent. kind of change.

Claims (9)

Translated fromChinese

1.一种污染物原位降解光电催化净水处理系统，其特征在于：包括浮板，所述浮板包括格栅以及载体种植槽，载体种植槽为可拆卸浮床种植篮，在浮床种植篮装有固定填料并种植挺水植物；在所述浮板外侧由导线连接设置光催化板，在所述光催化板下放设置阴极，阴极浸于受污染水体的液面表面处，通过导线及电阻连接至阳极，所述阳极通过连接线固定浸没在受污染水体底部的厌氧底泥中；在所述浮板下方悬挂设置有铁碳微电解镂空填料球，在填料球内装设铁碳微电解填料。1. A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants, characterized in that: it includes a floating plate, the floating plate includes a grid and a carrier planting tank, the carrier planting tank is a detachable floating bed planting basket, and the floating bed planting basket Equipped with fixed fillers and planted with emergent plants; a photocatalytic plate is connected by wires on the outside of the floating plate, and a cathode is placed under the photocatalytic plate, and the cathode is immersed in the liquid surface of the polluted water body. Connected to the anode, the anode is fixed and submerged in the anaerobic sediment at the bottom of the polluted water body through a connecting line; an iron-carbon micro-electrolysis hollow filler ball is suspended under the floating plate, and an iron-carbon micro-electrolysis filler ball is installed in the filler ball. filler.2.根据权利要求1所述的一种污染物原位降解光电催化净水处理系统，其特征在于：所述光催化板采用金属半导体材料、非金属半导体材料或复合半导体材料。2. A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants according to claim 1, wherein the photocatalytic plate is made of metal semiconductor material, non-metal semiconductor material or compound semiconductor material.3.根据权利要求2所述的一种污染物原位降解光电催化净水处理系统，其特征在于：所述光催化板为TiO₂/Fe₂O₃复合光电极，TiO₂光电极，In₂TiO₅光电极，g-C₃N₄光电极中的一种。3. A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants according to claim 2, characterized in that: the photocatalytic plate is a TiO₂ /Fe₂ O₃ composite photoelectrode, TiO₂ photoelectrode, In₂ TiO₅ photoelectrode, one of gC₃ N₄ photoelectrodes.4.根据权利要求1所述的一种污染物原位降解光电催化净水处理系统，其特征在于：所述挺水植物为美人蕉、菖蒲或水蕹菜。4. A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants according to claim 1, characterized in that: the emergent plants are canna, calamus or water spinach.5.根据权利要求1所述的一种污染物原位降解光电催化净水处理系统，其特征在于：所述铁碳微电解填料用不锈钢网包裹，置于铁碳微电解镂空填料球中。5. A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants according to claim 1, characterized in that: the iron-carbon micro-electrolysis filler is wrapped with a stainless steel mesh and placed in an iron-carbon micro-electrolysis hollow filler ball.6.根据权利要求1所述的一种污染物原位降解光电催化净水处理系统，其特征在于：所述阴极、阳极为石墨毡、碳毡或不锈钢丝网包裹活性炭颗粒中的一种或几种，厚度为5mm～20mm。6. A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants according to claim 1, characterized in that: the cathode and the anode are one of activated carbon particles wrapped in graphite felt, carbon felt or stainless steel wire mesh or Several kinds, the thickness is 5mm ~ 20mm.7.根据权利要求6所述的一种污染物原位降解光电催化净水处理系统，其特征在于：所述阴极、阳极、导线及外接电阻之间的连接均使用鳄鱼夹或金属连接器；连接阴极和阳极的导线将从阴阳极材料的中央穿过；所述导线为铜丝或钛丝；所述外接电阻的阻值为200Ω～1000Ω。7. A photoelectric catalytic water purification treatment system for in-situ degradation of pollutants according to claim 6, characterized in that: alligator clips or metal connectors are used for the connections between the cathode, anode, wires and external resistors; The wire connecting the cathode and the anode will pass through the center of the cathode and anode materials; the wire is copper wire or titanium wire; the resistance value of the external resistor is 200Ω-1000Ω.8.采用权利要求1-7任一净水处理系统的处理方法，其特征在于：将所述系统至于受污染需修复水体中，将所述阳极置于受污染水体底部5cm～8cm处的厌氧底泥中。8. The treatment method using any one of claims 1-7, characterized in that: the system is placed in the polluted water body to be repaired, and the anode is placed on the drain at the bottom of the polluted water body at 5cm to 8cm. Oxygen sediment.9.根据权利要求8的处理方法，其特征在于：所述挺水植物的种植密度为8株/平方米～15株/平方米。9. The treatment method according to claim 8, characterized in that: the planting density of the emergent plants is 8 to 15 plants/square meter.

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