CN105329991A - Novel penetrating type electro-Fenton reactor and method for treating organic wastewater - Google Patents
Novel penetrating type electro-Fenton reactor and method for treating organic wastewater Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 12
- 239000010815 organic waste Substances 0.000 claims abstract description 6
- 238000005273 aeration Methods 0.000 claims abstract description 5
- 150000001721 carbon Chemical class 0.000 claims abstract description 5
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002957 persistent organic pollutant Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims 2
- 239000006229 carbon black Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 2
- 150000004706 metal oxides Chemical class 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 239000000975 dye Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- UJMBCXLDXJUMFB-GLCFPVLVSA-K tartrazine Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-GLCFPVLVSA-K 0.000 description 4
- 229960000943 tartrazine Drugs 0.000 description 4
- 235000012756 tartrazine Nutrition 0.000 description 4
- 239000004149 tartrazine Substances 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 244000248349 Citrus limon Species 0.000 description 2
- 235000005979 Citrus limon Nutrition 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4619—Supplying gas to the electrolyte
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Abstract
本发明提出了一种新型穿透式电芬顿反应器以及其对有机废水进行处理的方法。新型电芬顿反应器包括：一个反应壳体内多个孔状阴、阳极依次交替排列，将反应壳体分割成若干个小反应隔室，在每一个小反应隔室的下端设置曝气装置为电芬顿反应提供空气。反应壳体两端分别设置进水口和出水口，污染物以垂直电极板的方向流入反应器，依次穿透阴、阳极。阳极为孔状金属或金属氧化物电极，阴极为孔状改性碳毡。该穿透式电芬顿反应器较常规反应器传质效率高、处理效果好、能耗低，适合染料、化工、医药等难降解有机废水处理。The invention proposes a novel penetrating electric Fenton reactor and its method for treating organic waste water. The new electric Fenton reactor includes: a plurality of porous cathodes and anodes are arranged alternately in a reaction shell, the reaction shell is divided into several small reaction compartments, and an aeration device is installed at the lower end of each small reaction compartment. The electro-Fenton reaction provides air. The two ends of the reaction shell are respectively provided with a water inlet and a water outlet, and the pollutants flow into the reactor in a direction perpendicular to the electrode plate, and penetrate through the cathode and anode in turn. The anode is a porous metal or metal oxide electrode, and the cathode is a porous modified carbon felt. Compared with conventional reactors, the penetrating electric Fenton reactor has higher mass transfer efficiency, better treatment effect, and lower energy consumption, and is suitable for the treatment of refractory organic wastewater such as dyes, chemicals, and medicines.
Description
技术领域technical field
本发明属于环境工程技术领域，主要涉及一种新型穿透式电芬顿反应器的及其应用用于有机废水处理的方法。The invention belongs to the technical field of environmental engineering, and mainly relates to a novel penetrating electric Fenton reactor and a method for its application in organic waste water treatment.
背景技术Background technique
电芬顿技术是近年来在水处理技术领域发展起来的一种新型电化学高级氧化技术，其反应的基本原理是溶解氧在合适的阴极上通过发生两电子的还原产生H2O2，产生的双氧水和二价铁催化剂反应生成具有强氧化性的羟基自由基(·OH)，从而达到无选择性地氧化降解有机污染物，反应如下：Electro-Fenton technology is a new type of electrochemical advanced oxidation technology developed in the field of water treatment technology in recent years. The basic principle of the reaction is that dissolved oxygen generates H 2 O 2 through the reduction of two electrons on a suitable cathode, and produces Hydrogen peroxide reacts with ferrous iron catalyst to generate strong oxidizing hydroxyl radicals (OH), so as to achieve non-selective oxidation and degradation of organic pollutants. The reaction is as follows:
O2+2H++2e-→H2O2 O 2 +2H + +2e - →H 2 O 2
H2O2+Fe2+→Fe3++·OH+OH- H 2 O 2 +Fe 2+ →Fe 3+ + OH+OH -
由于电芬顿处理效率高，可原位产生过氧化氢，避免了运输和贮存药剂时可能产生的危险，因而被认为是一种环境友好的处理方法，在国内外受到了广泛重视、研究和应用。电芬顿作为一种新兴的废水处理技术，已被应用于处理酚类、芳胺类、芳烃类、农药以及垃圾渗滤液、反渗透浓水等难降解有机废水。Due to the high efficiency of electro-fenton treatment, hydrogen peroxide can be generated in situ, which avoids the possible danger of transportation and storage of chemicals, so it is considered as an environmentally friendly treatment method, and has received extensive attention, research and attention at home and abroad. application. As an emerging wastewater treatment technology, electro-fenton has been applied to treat refractory organic wastewater such as phenols, aromatic amines, aromatic hydrocarbons, pesticides, landfill leachate, and reverse osmosis concentrated water.
在电芬顿体系中，电芬顿反应器的合理设计是提高电流效率和降低成本一条重要途径。目前电芬顿体系反应器主要分为两大类：间歇流和连续流体系，通常该体系阴阳两电极平行放置，受制于有效反应面积，仍存在两大主要问题：(1)传质效率欠高，污染物处理效果不佳；(2)能耗较高，处理成本高。因此，设计一种新型高效的电芬顿反应器具有很大的应用前景。In the electro-Fenton system, the rational design of the electro-Fenton reactor is an important way to improve the current efficiency and reduce the cost. At present, electro-Fenton system reactors are mainly divided into two categories: intermittent flow and continuous flow systems. Usually, the cathode and anode electrodes of this system are placed in parallel, limited by the effective reaction area, there are still two major problems: (1) The mass transfer efficiency is insufficient. High, the pollutant treatment effect is not good; (2) The energy consumption is high, and the treatment cost is high. Therefore, designing a new type of high-efficiency electro-Fenton reactor has great application prospects.
发明内容Contents of the invention
本发明的目的是针对上述不足，设计提供一种传质效率高、处理效果好、能耗较低的穿透式电芬顿反应器并应用于有机废水的处理。The object of the present invention is to address the above-mentioned shortcomings, design and provide a penetrating electric Fenton reactor with high mass transfer efficiency, good treatment effect and low energy consumption, and apply it to the treatment of organic wastewater.
本发明的新型穿透式电芬顿反应器：阴极和阳极依次交替排列将反应器分割成若干个小反应隔室，电极板间距为0.5-5cm；以孔状金属氧化物电极为阳极、孔状改性碳毡为阴极；有机废水从进水口以垂直电极板的方向依次穿透过阴阳极，并从出水口排出；在每一个小反应隔室下端设置曝气装置，为电芬顿反应提供空气。The new penetrating electric Fenton reactor of the present invention: the cathode and the anode are alternately arranged in turn to divide the reactor into several small reaction compartments, and the distance between the electrode plates is 0.5-5cm; the porous metal oxide electrode is used as the anode, the hole The modified carbon felt is used as the cathode; the organic waste water passes through the cathode and anode sequentially from the water inlet in the direction perpendicular to the electrode plate, and is discharged from the water outlet; an aeration device is installed at the lower end of each small reaction compartment to form an electro-Fenton reaction. Provide air.
本发明处理有机废水的方法如下：在有机废水处理过程，进水废水pH调节为3-7，通过调节水力停留时间20-200min，Fe2+浓度0.2-1.0mmol/L，曝气量20-150ml/min，电压2-5.0V来控制废水处理效果，处理后的废水由出水口排出。The method for processing organic wastewater of the present invention is as follows: in the organic wastewater treatment process, the pH of the influent wastewater is adjusted to 3-7, by adjusting the hydraulic retention time of 20-200min, the concentration of Fe 2+ is 0.2-1.0mmol/L, and the aeration rate is 20-200min. 150ml/min, voltage 2-5.0V to control the wastewater treatment effect, the treated wastewater is discharged from the outlet.
本发明具有以下的突出特点和有益效果：The present invention has the following outstanding features and beneficial effects:
(1)该新型穿透式电芬顿反应器可以高效地处理有机废水。在电压为4.0V、pH为3，流速为20ml/min条件下，进水100mg/L的柠檬黄废水处理后出水矿化率稳定在80％左右。(1) The novel penetrating electro-Fenton reactor can efficiently treat organic wastewater. Under the condition of voltage of 4.0V, pH of 3, and flow rate of 20ml/min, the mineralization rate of the effluent after the treatment of 100mg/L lemon yellow wastewater is stable at about 80%.
(2)孔状改性碳毡产双氧水性能优良，对有机污染物有很好的降解效果且性能稳定。(2) Porous modified carbon felt has excellent hydrogen peroxide production performance, good degradation effect on organic pollutants and stable performance.
附图说明Description of drawings
图1为新型穿透式电芬顿反应器示意图。Fig. 1 is a schematic diagram of a novel penetrating electric Fenton reactor.
图中(1)为壳体，(2)为阳极，(3)为阴极，(4)为出水口，(5)曝气装置，(6)进水口。In the figure (1) is the shell, (2) is the anode, (3) is the cathode, (4) is the water outlet, (5) the aeration device, (6) the water inlet.
图2为不同电压条件下，体系对柠檬黄去除效果对比Figure 2 is a comparison of the removal effect of the system on tartrazine under different voltage conditions
图3为不同电压条件下，对TOC去除效果对比Figure 3 is a comparison of TOC removal effects under different voltage conditions
图4为相同条件下，电芬顿和电氧化对TOC去除效果对比Figure 4 is a comparison of TOC removal effects between electro-Fenton and electro-oxidation under the same conditions
具体实施方式detailed description
本发明通过以下实施例结合附图进一步详述。The present invention is further described in detail through the following embodiments in conjunction with the accompanying drawings.
以孔状二氧化铅电极为阳极，孔状改性碳毡为阴极建立电芬顿体系。废水为100mg/L的柠檬黄，初始pH为3.0，水力停留时间为100min。通过控制电压2-5.0V对废水进行处理。The electro-Fenton system was established with the porous lead dioxide electrode as the anode and the porous modified carbon felt as the cathode. The wastewater is 100mg/L tartrazine, the initial pH is 3.0, and the hydraulic retention time is 100min. The waste water is treated by controlling the voltage 2-5.0V.
该实例对比了不同电压条件下对柠檬黄的去除效果。如图2所示，当电压为3、3.5、4、5V时，出水稳定时，柠檬黄去除率都能达到98％以上。当电压为2.5V时，在出水稳定后，柠檬黄去除率能达到94％。This example compares the removal effect of tartrazine under different voltage conditions. As shown in Figure 2, when the voltage is 3, 3.5, 4, 5V, when the water outlet is stable, the removal rate of lemon yellow can reach more than 98%. When the voltage is 2.5V, the removal rate of tartrazine can reach 94% after the effluent is stable.
图3比了不同电压条件下TOC去除效果。从图中可以看出，电压条件对TOC的去除影响较大。电压为4.0V，出水稳定时，TOC去除率在80％左右。Figure 3 compares the TOC removal effect under different voltage conditions. It can be seen from the figure that the voltage condition has a great influence on the removal of TOC. When the voltage is 4.0V and the effluent is stable, the TOC removal rate is about 80%.
图4对比了相同条件下，电芬顿和电氧化对TOC去除效果对比。从图中可以看出，阳极氧化所起到的作用很小，电芬顿起着主要作用。Figure 4 compares the TOC removal effects of electro-Fenton and electro-oxidation under the same conditions. It can be seen from the figure that anodization plays a small role and electro-Fenton plays a major role.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517427A (en) * | 2016-10-21 | 2017-03-22 | 河海大学 | Wastewater treatment device and method |
| CN112958119A (en) * | 2021-02-09 | 2021-06-15 | 中国科学院生态环境研究中心 | Composite photocatalytic material and preparation method and application thereof |
| CN113880196A (en) * | 2021-10-22 | 2022-01-04 | 东莞理工学院 | A bipolar synergistic penetration electro-Fenton device and method for degrading florfenicol |
| CN114074971A (en) * | 2020-08-20 | 2022-02-22 | 中国石油化工股份有限公司 | electro-Fenton composite oxidation device and method for degrading organic pollutants in high-chlorine sewage |
| CN118183983A (en) * | 2024-04-28 | 2024-06-14 | 重庆大学 | Method for removing pollutants in water by continuous flow multipath activation of peracetic acid |
| EP4458778A4 (en) * | 2022-12-06 | 2025-01-08 | Dalian University Of Technology | SYNERGISTIC ELECTROCATALYTIC ANODE AND CATHODE SYSTEM FOR WASTE WATER TREATMENT AND APPLICATION |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517427A (en) * | 2016-10-21 | 2017-03-22 | 河海大学 | Wastewater treatment device and method |
| CN114074971A (en) * | 2020-08-20 | 2022-02-22 | 中国石油化工股份有限公司 | electro-Fenton composite oxidation device and method for degrading organic pollutants in high-chlorine sewage |
| CN114074971B (en) * | 2020-08-20 | 2023-05-23 | 中国石油化工股份有限公司 | electro-Fenton composite oxidation device and method for degrading organic pollutants in high-chlorine-content sewage |
| CN112958119A (en) * | 2021-02-09 | 2021-06-15 | 中国科学院生态环境研究中心 | Composite photocatalytic material and preparation method and application thereof |
| CN112958119B (en) * | 2021-02-09 | 2022-06-07 | 中国科学院生态环境研究中心 | A kind of composite photocatalytic material and its preparation method and application |
| CN113880196A (en) * | 2021-10-22 | 2022-01-04 | 东莞理工学院 | A bipolar synergistic penetration electro-Fenton device and method for degrading florfenicol |
| EP4458778A4 (en) * | 2022-12-06 | 2025-01-08 | Dalian University Of Technology | SYNERGISTIC ELECTROCATALYTIC ANODE AND CATHODE SYSTEM FOR WASTE WATER TREATMENT AND APPLICATION |
| CN118183983A (en) * | 2024-04-28 | 2024-06-14 | 重庆大学 | Method for removing pollutants in water by continuous flow multipath activation of peracetic acid |
| CN118183983B (en) * | 2024-04-28 | 2024-09-24 | 重庆大学 | A method for removing pollutants in water by continuous flow multi-path activation of peracetic acid |
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Application publication date: 20160217 |