CN105905988A - Method for degrading sewage COD (chemical oxygen demand) on basis of visible light catalytic-electrocatalytic air oxidation - Google Patents
Method for degrading sewage COD (chemical oxygen demand) on basis of visible light catalytic-electrocatalytic air oxidation Download PDFInfo
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- CN105905988A CN105905988A CN201610350686.6A CN201610350686A CN105905988A CN 105905988 A CN105905988 A CN 105905988A CN 201610350686 A CN201610350686 A CN 201610350686A CN 105905988 A CN105905988 A CN 105905988A
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- Prior art keywords
- sewage
- visible light
- light catalytic
- air oxidation
- electrocatalytic
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- 239000010865 sewage Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 19
- 230000003647 oxidation Effects 0.000 title claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 2
- 230000000593 degrading effect Effects 0.000 title abstract 2
- 229910052760 oxygen Inorganic materials 0.000 title abstract 2
- 239000001301 oxygen Substances 0.000 title abstract 2
- 239000000126 substance Substances 0.000 title abstract 2
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 8
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 8
- 238000005273 aeration Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000009303 advanced oxidation process reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 230000005264 electron capture Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydroxyl radical free radical Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 1
- 229940012189 methyl orange Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Catalysts (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a method for degrading sewage COD (chemical oxygen demand) on the basis of visible light catalytic-electrocatalytic air oxidation. The method comprises the following steps: A. adding 0.1g of Ruth-2 ruthenium catalyst into every liter of sewage, and mechanically stirring so that all the phases in the sewage can be uniformly dispersed; B. sucking the uniformly stirred sewage in the step A into an electrolytic bath provided with a graphene electrode, electrifying to perform electrolysis, and meanwhile, introducing air from the bottom of the electrolytic bath by using an air pump to react for 3 hours; and C. after the reaction finishes, stopping electrifying and aeration, standing the degraded sewage, and filtering through a filter material device. Compared with the prior art, the treated sewage can be directly discharged or subjected to biological purification; and the residual Ruth-2 ruthenium catalyst can be used cyclically after being recovered.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to a kind of method based on visible light catalytic-electro-catalysis air oxidation degraded COD of sewage.
Background technology
Along with modernization industrial expansion; the discharge capacity of all kinds of sewage is increasing; the color of sewage is more and more deeper; the poisonous organic component of difficult degradation contained therein also gets more and more; and there is more defect in traditional organic wastewater treatment; it is difficult to rhodamine B degradation, this kind of material of methyl orange, it is impossible to adapt to the requirement of environmental protection and sustainable development.And advanced oxidation processes (Advanced Oxidation
Processes, AOPs), especially photochemical catalytic oxidation and electro-catalytic oxidation technology is increasingly subject to people's attention, and becomes poisonous and harmful organic pollution and processes the study hotspot of new technology.
Illumination TiO is found from Fujishima in 1972 etc.2After semi-conductor electricity has the function of decomposition water, nano-TiO2Photocatalysis oxidation technique causes as a kind of method that water processes to be paid attention to widely.TiO2Photochemical catalyst has cheap, nontoxic, high activity and steady performance, and the research in terms of degradation of contaminant is the most active.But titanium dioxide optical catalyst self also exists suspended phase, photochemical catalytic oxidation is easily condensed, difficult separations, easy in inactivation, recovery are difficult and light induced electron and the compound of hole cause quantum efficiency the lowest, reduces the defects such as its catalytic efficiency.Along with going deep into of photocatalysis research, people gradually recognize that depending merely on Photocatalytic Oxidation for Treating Organic Pollutants in Water is difficult to obtain technically breakthrough.Due to nano-TiO2One of subject matter of photocatalysis oxidation technique is that quantum efficiency is the lowest, has scholar's research to pass through extra electric field in recent years and stops light induced electron and hole to occur simple composite to improve quantum efficiency.Experiment shows: use TiO2Optoelectronic pole is remarkably improved the quantum efficiency of process, has the formation efficiency increasing semiconductor surface OH with cancelling simultaneously and blasts electron capture agent O in system2Two big advantages.
Electrocatalysis high-grade oxidized technology (Advanced Electrocatalysis Oxidation Processes, AEOP) is new A OPs that latest developments are got up, because it is easy and simple to handle and the advantage such as environmental compatible causes the extensive attention of researcher.It directly or indirectly produces hydrogen-based free radical by electrode reaction, thus the effectively difficult biochemical pollutant of degraded, but the organic current efficiency of this process degradation is low, and energy consumption is high, it is difficult to realize industrialization.
The features such as photo-electrocatalytic technology is efficient with it, harmless, environmental friendliness have come into the sight line of people, and have huge potentiality in terms of the depollution of environment and new energy development.The core of photo-electrocatalytic technology is to prepare highly active photochemical catalyst.Therefore, using applicable catalyst that sewage carries out photoelectrocatalysioxidization oxidization is the problem that currently need solve.
Summary of the invention
The invention aims to overcome the deficiencies in the prior art, it is provided that a kind of method based on visible light catalytic-electro-catalysis air oxidation degraded COD of sewage solves the problems referred to above.
For solving above-mentioned technical problem, the technical scheme is that
A kind of method based on visible light catalytic-electro-catalysis air oxidation degraded COD of sewage, comprises the following steps:
A. according to every liter of sewage adds the Ruth-2 ruthenium catalyst of 0.1g, make sewage is respectively uniformly dispersed mutually by mechanical agitation；
B. the sewage suction stirred in step A is equipped with the electrolytic cell of Graphene electrodes, energising electrolysis, uses air pump from being passed through air at the bottom of electrolytic cell simultaneously, react 3 hours；
C. stopping energising and aeration after reaction terminates, the sewage after degraded is filtered by filtering device after standing.
Preferably, described Graphene electrodes is Graph-proA electrode.
Compared with prior art, the invention have the benefit that 1) process after sewage can be in line or carry out biological cleaning；2) can be recycled after the recycling of remaining Ruth-2 ruthenium catalyst.
Detailed description of the invention
By making the architectural feature to the present invention and effect of being reached have a better understanding and awareness, describe in detail in order to preferred embodiment, be described as follows:
A kind of method based on visible light catalytic-electro-catalysis air oxidation degraded COD of sewage, comprises the following steps: A., according to adding the Ruth-2 ruthenium catalyst of 0.1g in every liter of sewage, makes respectively to be uniformly dispersed mutually in sewage by mechanical agitation；B. the sewage suction stirred in step A is equipped with the electrolytic cell of Graphene electrodes, energising electrolysis, uses air pump from being passed through air at the bottom of electrolytic cell simultaneously, react 3 hours；C. stopping energising and aeration after reaction terminates, the sewage after degraded is filtered by filtering device after standing.Described Graphene electrodes is Graph-proA electrode.Use Graphene electrodes Graph-proA electrochemical oxidation and under aeration, the organic matter in sewage carried out oxidation Decomposition based on Ruth-2 ruthenium catalyst, the introducing of Ruth-2 ruthenium catalyst improves the efficiency of electrolysis, the contour oxidizing intermediates of hydroxyl radical free radical that is changed into of Efficient air can be promoted the efficiency of reaction further in the case of aeration.The method based on visible light catalytic-electro-catalysis air oxidation degraded COD of sewage of the present invention can quickly reduce the COD numerical value of sewage, and low cost is effective, is with a wide range of applications.
The general principle of the present invention, principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle of the simply present invention described in above-described embodiment and specification; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements both fall within the range of claimed invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (2)
1. a method based on visible light catalytic-electro-catalysis air oxidation degraded COD of sewage, it is characterised in that comprise the following steps:
A. according to every liter of sewage adds the Ruth-2 ruthenium catalyst of 0.1g, make sewage is respectively uniformly dispersed mutually by mechanical agitation；
B. the sewage suction stirred in step A is equipped with the electrolytic cell of Graphene electrodes, energising electrolysis, uses air pump from being passed through air at the bottom of electrolytic cell simultaneously, react 3 hours；
C. stopping energising and aeration after reaction terminates, the sewage after degraded is filtered by filtering device after standing.
A kind of method based on visible light catalytic-electro-catalysis air oxidation degraded COD of sewage the most according to claim 1, it is characterised in that described Graphene electrodes is Graph-proA electrode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350686.6A CN105905988B (en) | 2016-05-25 | 2016-05-25 | A method of based on visible light catalytic-electro-catalysis air oxidation degradation COD of sewage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350686.6A CN105905988B (en) | 2016-05-25 | 2016-05-25 | A method of based on visible light catalytic-electro-catalysis air oxidation degradation COD of sewage |
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| Publication Number | Publication Date |
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| CN105905988A true CN105905988A (en) | 2016-08-31 |
| CN105905988B CN105905988B (en) | 2018-11-30 |
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| CN201610350686.6A Active CN105905988B (en) | 2016-05-25 | 2016-05-25 | A method of based on visible light catalytic-electro-catalysis air oxidation degradation COD of sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529489A (en) * | 2018-11-25 | 2019-03-29 | 四川蕊康环保科技有限公司 | A kind of graphene-based air cleaning system |
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|---|---|---|---|---|
| JP2004035908A (en) * | 2002-06-28 | 2004-02-05 | Kobe Steel Ltd | Electrode for electrochemical treatment, and electrochemical treatment apparatus |
| CN1695784A (en) * | 2005-03-30 | 2005-11-16 | 福州大学 | Composite photocatalytic reaction system for eliminating environmental pollutants in air or water efficiently |
| CN101693560A (en) * | 2009-10-21 | 2010-04-14 | 华北水利水电学院 | Integral solar energy photoelectricity water-treatment device |
| CN102092820A (en) * | 2011-01-04 | 2011-06-15 | 华中师范大学 | Method and device for removing organic matters from water by using double-pool double-effect visible light in response to photo-electro-Fenton reaction |
| WO2011072213A2 (en) * | 2009-12-10 | 2011-06-16 | Virginia Commonwealth University | Production of graphene and nanoparticle catalysts supported on graphene using laser radiation |
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2016
- 2016-05-25 CN CN201610350686.6A patent/CN105905988B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004035908A (en) * | 2002-06-28 | 2004-02-05 | Kobe Steel Ltd | Electrode for electrochemical treatment, and electrochemical treatment apparatus |
| CN1695784A (en) * | 2005-03-30 | 2005-11-16 | 福州大学 | Composite photocatalytic reaction system for eliminating environmental pollutants in air or water efficiently |
| CN101693560A (en) * | 2009-10-21 | 2010-04-14 | 华北水利水电学院 | Integral solar energy photoelectricity water-treatment device |
| WO2011072213A2 (en) * | 2009-12-10 | 2011-06-16 | Virginia Commonwealth University | Production of graphene and nanoparticle catalysts supported on graphene using laser radiation |
| CN102092820A (en) * | 2011-01-04 | 2011-06-15 | 华中师范大学 | Method and device for removing organic matters from water by using double-pool double-effect visible light in response to photo-electro-Fenton reaction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109529489A (en) * | 2018-11-25 | 2019-03-29 | 四川蕊康环保科技有限公司 | A kind of graphene-based air cleaning system |
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| CN105905988B (en) | 2018-11-30 |
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Application publication date: 20160831 Assignee: Anhui Xingtai Financial Leasing Co.,Ltd. Assignor: ANHUI PUSHI ECOLOGICAL ENVIRONMENT ENGINEERING Co.,Ltd. Contract record no.: X2022980005644 Denomination of invention: A method for COD degradation of wastewater based on visible light catalysis electrocatalysis air oxidation Granted publication date: 20181130 License type: Exclusive License Record date: 20220517 |
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Denomination of invention: A method for COD degradation of wastewater based on visible light catalysis electrocatalysis air oxidation Effective date of registration: 20220519 Granted publication date: 20181130 Pledgee: Anhui Xingtai Financial Leasing Co.,Ltd. Pledgor: ANHUI PUSHI ECOLOGICAL ENVIRONMENT ENGINEERING Co.,Ltd. Registration number: Y2022980005867 |
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Address after: J2C-1701, Phase II, Innovation Industrial Park, High-tech Zone, Hefei City, Anhui Province, 230088 Patentee after: Anhui Platts Ecological Environment Co.,Ltd. Address before: 230000 phase two of Innovation Industrial Park, hi tech Zone, Hefei, Anhui, F5 1105-1106 Patentee before: ANHUI PUSHI ECOLOGICAL ENVIRONMENT ENGINEERING Co.,Ltd. |
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