CN117105393A - Waste water treatment device based on photoelectric biological Fenton reaction - Google Patents

Waste water treatment device based on photoelectric biological Fenton reaction Download PDF

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Publication number
CN117105393A
CN117105393A CN202311276857.1A CN202311276857A CN117105393A CN 117105393 A CN117105393 A CN 117105393A CN 202311276857 A CN202311276857 A CN 202311276857A CN 117105393 A CN117105393 A CN 117105393A
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China
Prior art keywords
fenton reaction
cathode
anode
wastewater
chamber
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CN202311276857.1A
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Chinese (zh)
Inventor
吴义诚
赵冉
翟骁驭
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Xiamen University of Technology
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Xiamen University of Technology
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Priority to CN202311276857.1A priority Critical patent/CN117105393A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/005Combined electrochemical biological processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/722Oxidation by peroxides
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Molecular Biology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The application provides a wastewater processor based on photoelectric biological Fenton reaction, which can generate electricity in situ through electricity-generating microorganisms, reduces dependence on external power supply, improves conversion efficiency and meets the requirements of multi-scene wastewater treatment, and immobilized microalgae in a cathode chamber provide oxygen of free radicals under photosynthesis so as to promote catalytic reaction to replace an aerator; the pH of the wastewater can be automatically adjusted through the control unit and the drug delivery device, and the resistance of the cathode and the anode can be adjusted, so that the wastewater treatment efficiency is improved. The application of organisms in an electrochemical system replaces the use of external energy and instruments, has environmental friendliness, and simultaneously generates Fe in the wastewater treatment process 2+ Reduction to Fe in the reaction 3+ While Fe 3+ The catalyst is used as a catalyst in Fenton reaction for recycling, so that the generation of iron mud is reduced; the reduction of iron mud and the recycling of iron ions not only improve Fenton reactionEfficiency, and reduces the need for new iron ions and the consumption of medicines.

Description

Waste water treatment device based on photoelectric biological Fenton reaction
Technical Field
The application relates to the technical field of wastewater treatment devices, in particular to a wastewater treatment device based on photoelectric biological Fenton reaction.
Background
Oseltamivir is used as one of the most commonly used antiviral drugs, and is widely used in the treatment of influenza a and b. The large-scale use of oseltamivir-containing medicaments leads to a great increase in the concentration of oseltamivir in wastewater, and oseltamivir can also enter a drinking water source through water circulation to form a potential risk for human health.
The traditional organic wastewater treatment technology mostly adopts common methods such as air floatation, adsorption, filtration, ozone oxidation, chlorination method, micro-electrolysis and the like, while oseltamivir belongs to a class of organic matters which are difficult to degrade, and the treatment efficiency is low by adopting the technologies. While the existing Fenton reactor can improve the treatment efficiency, the existing Fenton reactor has the following defects:
1. additional power and equipment are required to operate the entire reactor, such as an aerator or the like;
2. iron mud is continuously generated in the reaction process, so that the Fenton reaction efficiency is greatly reduced;
3. the pH value in the wastewater cannot be automatically adjusted so as to improve the wastewater treatment efficiency.
Disclosure of Invention
In view of the above, the present application aims to provide a wastewater treatment device based on electro-optical biological Fenton reaction.
The application adopts the following scheme:
the application provides a wastewater processor based on photoelectric biological Fenton reaction, which comprises an anode chamber, a cathode chamber, an adjusting tank, a control unit and a medicine throwing device, wherein the adjusting tank is arranged on the anode chamber;
the control unit is used for adjusting the resistances of the cathode and the anode in the cathode chamber and the anode chamber and controlling the medicine delivery device to deliver medicines to the adjusting tank and the cathode chamber; the conditioning tank is configured to: unidirectional delivery of wastewater to the cathode chamber;
the anode chamber and the cathode chamber are separated by a proton exchange membrane; carbon brushes are adopted as anodes in the anode chambers, and electricity-generating microorganisms are placed in the anode chambers; a graphite rod is adopted as a cathode in the cathode chamber, and the surface of the graphite rod is coated with a mixture formed by uniformly stirring a magnetic iron-based composite photocatalyst and conductive adhesive; the cathode chamber is provided with immobilized microalgae; the anode and the cathode are connected by a wire.
Further, the magnetic iron-based composite photocatalyst is prepared by compositing magnetic ferroferric oxide, nitrogen-doped titanium dioxide and reduced graphene oxide through a hydrothermal method.
Further, the anode chamber is a closed chamber.
Further, the drug delivery device stores Na2S2O3, H2SO4 and FeSO4.
Further, a stirrer and a PH meter which are electrically connected with the control unit are also arranged in the regulating tank.
Further, a metering pump electrically connected with the control unit is also arranged in the regulating tank.
Further, a valve switch electrically connected with the control unit is arranged between the regulating tank and the cathode chamber, and a one-way valve is arranged at the downstream of the valve switch.
Further, the regulating tank and the communicating channel form a height difference, and the valve switch is arranged at the bottom of the regulating tank.
By adopting the technical scheme, the application can obtain the following technical effects:
1. the device can generate electricity in situ through the electricity-generating microorganism, so that dependence on external power sources is reduced, conversion efficiency is improved, and meanwhile, the requirements of multi-scene wastewater treatment are met.
2. The device can automatically adjust the pH value of the wastewater and adjust the resistance values of the cathode and the anode through the control unit and the drug delivery device, thereby improving the wastewater treatment efficiency.
3. The device is environment-friendly, fe2+ generated in the wastewater treatment process is reduced into Fe3+ in the reaction, and the Fe3+ is used as a catalyst in the Fenton reaction for recycling, and meanwhile, the generation of iron mud is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a wastewater treatment apparatus based on electro-optical biological Fenton reaction according to an embodiment of the present application;
fig. 2 is a schematic cross-sectional structure of a wastewater treatment apparatus based on electro-optical bio-Fenton reaction according to an embodiment of the present application.
Icon: cathode chamber 1, anode chamber 2, regulating tank 3, control unit 4, medicine feeding device 5, cathode 6, anode 7, proton exchange membrane 8, PH meter 9, valve switch 10, and stirrer 11.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
Examples
Referring to fig. 1 and 2, the present embodiment provides a wastewater treatment device based on electro-optical bio-Fenton reaction, which comprises an anode chamber 2, a cathode chamber 1, an adjusting tank 3, a control unit 4 and a drug delivery device 5;
the control unit 4 is used for adjusting the resistances of the cathode 6 and the anode 7 in the cathode chamber 1 and the anode chamber 2 and controlling the medicine feeding device 5 to feed medicines into the regulating tank 3 and the cathode chamber 1; the conditioning tank 3 is configured to: unidirectional delivery of wastewater to the cathode chamber 1;
the anode chamber 2 and the cathode chamber 1 are separated by a proton exchange membrane 8; a carbon brush is adopted in the anode chamber 2 as an anode 7, and electricity-generating microorganisms are put in the anode chamber 2; a graphite rod is adopted as a cathode 6 in the cathode chamber 1, and the surface of the graphite rod is coated with a mixture formed by uniformly stirring a magnetic iron-based composite photocatalyst and conductive adhesive; immobilized microalgae are put in the cathode chamber 1; the anode 7 and the cathode 6 are connected by a wire.
Specifically, in this embodiment, the magnetic iron-based composite photocatalyst is prepared by compositing magnetic ferroferric oxide, nitrogen-doped titanium dioxide and reduced graphene oxide through a hydrothermal method. The anode chamber 2 is a closed chamber, so that the electrogenic microorganisms can generate electrons and H by utilizing organic matters in the wastewater in an anaerobic environment + . The magnetic iron-based composite photocatalyst catalyzes O under natural light condition 2 Generates active oxygen, and the active oxygen and H of the anode chamber 2 + Reaction to produce H 2 O 2 Simultaneously providing oxygen for photocatalysis; the immobilized microalgae put in replaces the aerator, thereby protecting the microalgae from oxidation damage of active oxygen and generating O 2 The method comprises the steps of carrying out a first treatment on the surface of the The medicine delivery device 5 is provided with Na 2 S 2 O 3 、H 2 SO 4 And FeSO 4 . In the present embodiment, a valve switch 10 electrically connected to the control unit 4 is provided between the regulating reservoir 3 and the cathode chamber 1, and a check valve (not shown in the drawings) is provided downstream of the valve switch 10; the regulating tank 3 and the communicating channel form a height difference, and the valve switch 10 is arranged at the bottom of the regulating tank 3 so that wastewater can enter the cathode chamber 1 through the communicating channel by gravitational potential energy; the regulating tank 3 is also provided with a stirrer 11 and a PH meter 9 which are electrically connected with the control unit 4. Of course, in other embodiments, a metering pump may be added between the regulating tank 3 and the cathode chamber 1 on the basis of the valve switch 10 and the check valve, or the metering pump may be separately providedAnd the pump is used for providing power for the wastewater to flow to the cathode chamber 1, and metering the wastewater at the same time, so that the wastewater is prevented from overflowing the cathode chamber 1.
The process of the device for treating wastewater is described in detail as follows:
oseltamium Wei Feishui enters the regulating tank 3 through the water inlet of the regulating tank 3, the pH meter 9 works to detect the pH value of the wastewater at the moment, and the control unit 4 controls the drug delivery device 5 to deliver 0.5 mol/L of H 2 SO 4 Regulating pH value of the wastewater to about 3, and adding Na of 0.5 mol/L 2 SO 4 As an electrolyte of the photo-bioelectric Fenton reaction to improve the conductivity of oseltamium Wei Feishui; turning on the stirrer 11 to fully and uniformly dissolve the medicines in the wastewater, and then turning on the valve switch 10 to enable the wastewater to flow into the cathode chamber 1 in one way to perform Fenton reaction; the magnetic iron-based composite photocatalyst in the cathode chamber 1 catalyzes O under natural light conditions 2 Generating active oxygen; the electrogenerated microorganisms in the anode 7 generate electrons and generate H+ by utilizing organic matters in the wastewater in an anaerobic environment, the generated electrons are effectively transmitted to the electrode, and the H+ enters the cathode chamber 1 through the proton exchange membrane 8; reactive oxygen species react with H+ to form H 2 O 2 Simultaneously providing oxygen for photocatalysis; the immobilized microalgae put in can protect the microalgae from being damaged by oxidation of active oxygen and can generate O 2 To promote catalytic reactions; fe in cathode chamber 1 2+ And H is 2 O 2 The oxidation-reduction potential of the generated OH is higher, and the generated OH has very strong electron affinity, so that the oseltamium Wei Feishui can be degraded into small molecular metabolites or directly into carbon dioxide and water; fe (Fe) 2+ The medicine dispensing device 5 can dispense FeSO at any time in the cathode chamber 1 as a consumable by the control unit 4 4 To supplement Fe 2+
The carbon brush in the anode chamber 2 is connected with the graphite rod in the cathode chamber 1 through a wire, and electrons generated by the anode 7 are transmitted to the cathode 6 through the wire, so that the chemical reaction of the cathode 6 is ensured; an adjustable resistor can be arranged between the cathode 6 and the anode 7, and the resistance value is controlled by the control unit 4 so as to ensure the current of the optimal Fenton reaction; meanwhile, the shell of the processor can be made of transparent materials so as to ensure photosynthesis of microalgae.
The application provides a wastewater processor based on photoelectric biological Fenton reaction, which can generate electricity in situ through electricity-generating microorganisms, reduces dependence on external power supply, improves conversion efficiency and meets the requirements of multi-scene wastewater treatment, and immobilized microalgae in a cathode chamber provide oxygen of free radicals under photosynthesis to promote catalytic reaction and replace an aerator; the pH of the wastewater can be automatically adjusted through the control unit 4 and the drug delivery device 5, and the resistance of the cathode 6 and the anode 7 can be adjusted, so that the wastewater treatment efficiency is improved. The wastewater treatment device replaces the use of external energy and instruments by the application of organisms in an electrochemical system, has environmental friendliness, and simultaneously generates Fe in the wastewater treatment process 2+ Reduction to Fe in the reaction 3+ While Fe 3+ The catalyst is used as a catalyst in Fenton reaction for recycling, so that the generation of iron mud is reduced; the reduction of iron mud and the recycling of iron ions not only improve the Fenton reaction efficiency, but also reduce the requirement for new iron ions and the consumption of medicines.
The above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and all technical solutions belonging to the concept of the present application belong to the protection scope of the present application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Claims (8)

1. The wastewater processor based on the photoelectric biological Fenton reaction comprises an anode chamber and a cathode chamber and is characterized by also comprising an adjusting tank, a control unit and a medicine throwing device;
the control unit is used for adjusting the resistances of the cathode and the anode in the cathode chamber and the anode chamber and controlling the medicine delivery device to deliver medicines to the adjusting tank and the cathode chamber; the conditioning tank is configured to: unidirectional delivery of wastewater to the cathode chamber;
the anode chamber and the cathode chamber are separated by a proton exchange membrane; carbon brushes are adopted as anodes in the anode chambers, and electricity-generating microorganisms are placed in the anode chambers; a graphite rod is adopted as a cathode in the cathode chamber, and the surface of the graphite rod is coated with a mixture formed by uniformly stirring a magnetic iron-based composite photocatalyst and conductive adhesive; the cathode chamber is provided with immobilized microalgae; the anode and the cathode are connected by a wire.
2. The wastewater processor based on the photoelectric biological Fenton reaction according to claim 1, wherein the magnetic iron-based composite photocatalyst is prepared by compositing magnetic ferroferric oxide, nitrogen-doped titanium dioxide and reduced graphene oxide through a hydrothermal method.
3. The electro-optic bio-Fenton reaction based wastewater treatment processor of claim 1, wherein the anode chamber is a closed chamber.
4. The electro-optic bio-Fenton reaction based wastewater treatment facility of claim 1, wherein the drug delivery device stores Na 2 S 2 O 3 、H 2 SO 4 And FeSO 4
5. The electro-optical bio-Fenton reaction-based wastewater processor according to claim 1, wherein a stirrer and a PH meter electrically connected with the control unit are further provided in the regulating tank.
6. The photoelectric biological Fenton reaction-based wastewater processor according to claim 1, wherein a metering pump electrically connected with the control unit is further arranged in the regulating tank.
7. The electro-optical bio-Fenton reaction-based wastewater processor according to claim 1, wherein a valve switch electrically connected to the control unit is provided between the regulating reservoir and the cathode chamber, and a one-way valve is provided downstream of the valve switch.
8. The electro-optical bio-Fenton reaction-based wastewater treatment apparatus according to claim 7, wherein the regulating tank is formed with a height difference from the communication channel, and the valve switch is disposed at the bottom of the regulating tank.
CN202311276857.1A 2023-09-28 2023-09-28 Waste water treatment device based on photoelectric biological Fenton reaction Pending CN117105393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311276857.1A CN117105393A (en) 2023-09-28 2023-09-28 Waste water treatment device based on photoelectric biological Fenton reaction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311276857.1A CN117105393A (en) 2023-09-28 2023-09-28 Waste water treatment device based on photoelectric biological Fenton reaction

Publications (1)

Publication Number Publication Date
CN117105393A true CN117105393A (en) 2023-11-24

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Country Status (1)

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