CN113149128A - Process for treating industrial wastewater by using waste plate-type denitration catalyst - Google Patents
Process for treating industrial wastewater by using waste plate-type denitration catalyst Download PDFInfo
- Publication number
- CN113149128A CN113149128A CN202110289318.6A CN202110289318A CN113149128A CN 113149128 A CN113149128 A CN 113149128A CN 202110289318 A CN202110289318 A CN 202110289318A CN 113149128 A CN113149128 A CN 113149128A
- Authority
- CN
- China
- Prior art keywords
- photocatalytic reaction
- plate
- wastewater
- type denitration
- waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 21
- 238000013032 photocatalytic reaction Methods 0.000 claims abstract description 38
- 239000002351 wastewater Substances 0.000 claims abstract description 19
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 18
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 7
- 231100000719 pollutant Toxicity 0.000 claims abstract description 6
- 238000007664 blowing Methods 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract description 5
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 5
- 238000000746 purification Methods 0.000 claims abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 claims description 2
- 230000016615 flocculation Effects 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 239000004071 soot Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003933 environmental pollution control Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/04—Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
Abstract
The invention discloses a process for treating industrial wastewater by using a waste plate-type denitration catalyst, and belongs to the technical field of denitration catalysts and wastewater treatment. The process comprises the steps of carrying out physical soot blowing and flushing pretreatment on the waste plate-type catalyst in the denitration reactor; the wastewater flows through a photocatalytic reaction device, and pollutants in the wastewater are removed through oxidation under the irradiation of ultraviolet light; the effluent of the reaction device enters an original industrial wastewater treatment system for secondary purification treatment, and finally the wastewater is discharged or recycled after reaching the standard. The method has the advantages of simple process flow, available local materials, low investment and operation cost and strong operability by depending on the existing wastewater treatment process, has applicability to various thermal power generation enterprises and industrial wastewater treatment enterprises, can effectively treat wastewater, has good environmental protection benefit and economic benefit, and has wide application prospect.
Description
Technical Field
The invention belongs to the technical field of denitration catalysts and wastewater treatment, and particularly relates to a process for treating industrial wastewater by using a waste plate-type denitration catalyst.
Background
With the continuous development of modern industry, wastewater containing a large amount of toxic and harmful pollutants which are difficult to degrade biologically is discharged into the environment, so that serious environmental pollution is caused, and the conventional water treatment methods, such as a physical chemical method and a biological treatment method, cannot meet the requirements of purification treatment on technology and economy. Using the semiconductor material TiO2The technology for degrading environmental pollutants by photocatalytic oxidation as a catalyst has an important position in various environmental pollution control and treatment technologies due to the advantages of low cost, high efficiency, cleanness, no toxicity and the like. The technical principle is TiO2Absorbing ultraviolet light with a band gap of more than 3-3.2 eV can form electrons on a conduction band and holes on a valence band, and the electrons and the holes are respectively diffused to the surface of titanium dioxide to generate strong oxidizing OH (free radical) and O in solution2 -(free radical) is effective in removing pollutants (organic and inorganic substances) from wastewater. At present, the main control of the emission of nitrogen oxides in flue gas is Selective Catalytic Reduction (SCR), and most of the used catalysts are TiO2As a carrier, V2O5/WO3Is a porous medium of active components, and also provides a medium material for treating wastewater by photocatalytic reaction. The invention fully considers the reutilization of the waste denitration catalyst and TiO2Of (2) a lightThe catalytic performance is combined with the technical characteristics of the denitration catalyst and the wastewater treatment, and a new wastewater treatment process system is developed.
In the prior art, CN203877938U discloses a novel high-efficiency energy-saving wastewater treatment device, and the patent technology provides a device for catalytic degradation of industrial wastewater by using titanium dioxide as a photocatalyst and ultraviolet visible light as a light source to drive reaction, but the problems of the form of the titanium dioxide photocatalyst in the wastewater, the arrangement in the treatment device and the like are not clear.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a process for treating industrial wastewater by using a waste plate-type denitration catalyst, which has the advantages of simple process flow, convenient operation and locally available materials.
The technical scheme adopted by the invention for solving the problems is as follows: a process for treating industrial wastewater by using a waste plate-type denitration catalyst is characterized by comprising three procedures of waste catalyst pretreatment, photocatalytic reaction and industrial wastewater treatment.
The waste catalyst is a waste plate-type denitration catalyst of an SCR denitration device, and the main component of the waste catalyst is TiO2The crystal structure is anatase type, and is fixed on a stainless steel metal sieve plate net in an extruding way.
The waste catalyst pretreatment adopts physical blowing and high-pressure water washing processes to remove attachments on the surface of the plate-type denitration catalyst.
Photocatalytic reaction adopts photocatalytic reaction device, airtight glass device has been arranged at photocatalytic reaction device's inside middle part, airtight glass device is flat cuboid structure, the ultraviolet lamp has been arranged to airtight glass device's inside, as photocatalytic reaction's light source, plate-type denitration catalyst is arranged perpendicularly to photocatalytic reaction device's both sides inner wall, photocatalytic reaction device's one end is establishedPut the water inlet, the other end of photocatalytic reaction device sets up the delivery port, and waste water rivers flow through along the passageway between board-like denitration catalyst and the ultraviolet lamp, and the ultraviolet ray passes airtight glass device and waste water irradiation on board-like denitration catalyst, and under the irradiation of ultraviolet ray, the pollutant in the waste water is by the oxidation and is got rid of, and photocatalytic reaction device's top is provided with the air-blast device, carries air to the surface of board-like denitration catalyst in succession for provide the O that the photocatalytic reaction needs2。
The industrial wastewater treatment adopts the existing industrial wastewater treatment device to carry out secondary purification treatment on the effluent of the photocatalytic reaction device, and finally realizes the standard discharge or recycling of the wastewater.
Compared with the prior art, the invention has the following advantages and effects: the method has the advantages of simple process flow, available local materials, low investment and operation cost and strong operability by depending on the existing wastewater treatment process, has applicability to various thermal power generation enterprises and wastewater treatment enterprises, can effectively treat wastewater, has good environmental protection benefit and economic benefit, and has wide application prospect.
Drawings
FIG. 1 is a schematic view of the structure of a photocatalytic reaction apparatus according to the present invention.
In the figure: the device comprises a photocatalytic reaction device 1, a plate-type denitration catalyst 2, a closed glass device 3, an ultraviolet lamp 4, a water inlet 5, a water outlet 6 and a blower device 7.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
A process for treating industrial wastewater by using a waste plate-type denitration catalyst is characterized by comprising three procedures of waste catalyst pretreatment, photocatalytic reaction and industrial wastewater treatment.
The waste catalyst is a waste plate-type denitration catalyst 2 of an SCR denitration device and comprises the main componentIs TiO2The crystal structure is anatase type, and is fixed on a stainless steel metal sieve plate net in an extruding way.
The waste catalyst is pretreated by adopting physical blowing and high-pressure water washing processes to remove attachments on the surface of the plate-type denitration catalyst 2.
Referring to fig. 1, a photocatalytic reaction device 1 is adopted, a closed glass device 3 is arranged in the middle of the inside of the photocatalytic reaction device 1, the closed glass device 3 is in a flat cuboid structure, an ultraviolet lamp 4 is arranged inside the closed glass device 3 and serves as a light source of the photocatalytic reaction, plate-type denitration catalysts 2 are vertically arranged on the inner walls of two sides of the photocatalytic reaction device 1, a water inlet 5 is arranged at one end of the photocatalytic reaction device 1, a water outlet 6 is arranged at the other end of the photocatalytic reaction device 1, wastewater water flows through a channel between the plate-type denitration catalysts 2 and the ultraviolet lamp 4, ultraviolet light penetrates through the closed glass device 3 and irradiates on the plate-type denitration catalysts 2, pollutants in the wastewater are removed by oxidation under the irradiation of the ultraviolet light, a blowing device 7 is arranged at the top of the photocatalytic reaction device 1 and continuously conveys air to the surface of the plate-type denitration catalysts 2, o required for providing photocatalytic reaction2。
The industrial wastewater treatment adopts the existing industrial wastewater treatment device to carry out secondary purification treatment on the effluent of the photocatalytic reaction device 1, and finally realizes the standard discharge or recycling of the wastewater, and the main process is that the effluent of the photocatalytic reaction device 1 → alkali neutralization → flocculation → precipitation → acid neutralization → standard discharge.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (3)
1. A process for treating industrial wastewater by using a waste plate-type denitration catalyst is characterized by comprising three procedures of waste catalyst pretreatment, photocatalytic reaction and industrial wastewater treatment;
the waste catalyst pretreatment adopts physical blowing and high-pressure water washing processes to remove attachments on the surface of the plate-type denitration catalyst (2);
the photocatalytic reaction adopts a photocatalytic reaction device (1), a closed glass device (3) is arranged in the middle of the inside of the photocatalytic reaction device (1), an ultraviolet lamp (4) is arranged in the closed glass device (3) and serves as a light source of the photocatalytic reaction, plate-type denitration catalysts (2) are vertically arranged on the inner walls of the two sides of the photocatalytic reaction device (1), a water inlet (5) is formed in one end of the photocatalytic reaction device (1), a water outlet (6) is formed in the other end of the photocatalytic reaction device (1), wastewater flows through a channel between the plate-type denitration catalysts (2) and the ultraviolet lamp (4), ultraviolet light penetrates through the closed glass device (3) and irradiates on the plate-type denitration catalysts (2), pollutants in the wastewater are removed by oxidation under the irradiation of the ultraviolet light, and a blast device (7) is arranged at the top of the photocatalytic reaction device (1), continuously supplying air to the surface of the plate-type denitration catalyst (2) for providing O required by the photocatalytic reaction2；
The industrial wastewater treatment is used for carrying out secondary purification treatment on the effluent of the photocatalytic reaction device (1) to finally realize standard discharge or recycling of the wastewater, and the main process is that the effluent of the photocatalytic reaction device (1) is treated → alkali addition neutralization → flocculation → precipitation → acid addition neutralization → standard discharge.
2. The process for treating industrial wastewater by using the waste plate-type denitration catalyst according to claim 1, wherein the waste catalyst is a waste plate-type denitration catalyst (2) of an SCR denitration device, and the main component of the waste plate-type denitration catalyst is TiO2The crystal structure is anatase type, and the crystal structure is fixed on a stainless steel metal sieve plate net in an extruding way.
3. The process for treating industrial wastewater by using the waste plate-type denitration catalyst according to claim 1, wherein the closed glass device (3) has a flat rectangular parallelepiped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289318.6A CN113149128A (en) | 2021-03-18 | 2021-03-18 | Process for treating industrial wastewater by using waste plate-type denitration catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289318.6A CN113149128A (en) | 2021-03-18 | 2021-03-18 | Process for treating industrial wastewater by using waste plate-type denitration catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113149128A true CN113149128A (en) | 2021-07-23 |
Family
ID=76887627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110289318.6A Pending CN113149128A (en) | 2021-03-18 | 2021-03-18 | Process for treating industrial wastewater by using waste plate-type denitration catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113149128A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202766327U (en) * | 2012-07-19 | 2013-03-06 | 湖南先科环保有限公司 | High-efficiency recyclable photocatalysis industrial wastewater treatment device |
| CN107021587A (en) * | 2017-06-16 | 2017-08-08 | 云南大学 | The technique that a kind of utilization skid-mounted type light-catalyzed reaction processing system handles waste water |
| CN110075842A (en) * | 2019-05-22 | 2019-08-02 | 国电科学技术研究院有限公司 | Using waste and old manganese based denitration catalyst as the treatment catalyst of raw material and preparation method |
-
2021
- 2021-03-18 CN CN202110289318.6A patent/CN113149128A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202766327U (en) * | 2012-07-19 | 2013-03-06 | 湖南先科环保有限公司 | High-efficiency recyclable photocatalysis industrial wastewater treatment device |
| CN107021587A (en) * | 2017-06-16 | 2017-08-08 | 云南大学 | The technique that a kind of utilization skid-mounted type light-catalyzed reaction processing system handles waste water |
| CN110075842A (en) * | 2019-05-22 | 2019-08-02 | 国电科学技术研究院有限公司 | Using waste and old manganese based denitration catalyst as the treatment catalyst of raw material and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206082175U (en) | Industrial waste gas treatment column | |
| CN208482261U (en) | A kind of microwave electrodeless ultraviolet light catalysis purification and synchronous ozone decomposition device | |
| CN108911023B (en) | Circulation type heterogeneous photocatalytic oxidation treatment system and treatment method | |
| WO2016115790A1 (en) | Ozone-photocatalysis reactor and water treatment method | |
| CN204293566U (en) | A kind of waste gas treatment equipment adopting ultraviolet catalytic technology | |
| CN111514723A (en) | Ultralow-emission treatment method for heat source waste gas of waste tire pyrolysis furnace | |
| WO2020098574A1 (en) | Method and apparatus for purifying waste incineration flue gas | |
| CN206965478U (en) | A kind of photoelectricity ion deodorizing device | |
| CN209917632U (en) | Low concentration VOCs organic waste gas purifying equipment | |
| CN105056721A (en) | Novel waste rubber desulphurization waste gas three-stage energy-saving green treatment process method | |
| CN105498482A (en) | Waste gas treatment device | |
| CN110559827B (en) | Treatment process of papermaking waste gas | |
| CN206082107U (en) | Industry organic waste gas purification device | |
| CN210251748U (en) | Waste gas purifying equipment | |
| CN113149128A (en) | Process for treating industrial wastewater by using waste plate-type denitration catalyst | |
| CN215288073U (en) | System for utilize old and useless board-like denitration catalyst to handle industrial waste water | |
| CN207507263U (en) | A kind of VOCs treatment catalytic unit | |
| CN203139901U (en) | Multifunction integrated photocatalytic reactor for treating organic waste gas in industries with stink pollution | |
| CN108926975A (en) | A kind of microwave plasma exhaust gas purifying method | |
| CN215027556U (en) | Waste gas deodorizing device | |
| CN210631923U (en) | UV light catalytic oxidation tower | |
| CN213433847U (en) | Industrial waste gas photocatalysis treatment equipment | |
| CN211636015U (en) | Integrated processing apparatus of useless warehouse waste gas of danger | |
| WO2020098576A1 (en) | Integrated device employing low-temperature plasma to treat waste incinerator flue gas | |
| CN210448740U (en) | Low-temperature plasma UV photo-oxygen catalysis all-in-one machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210723 |
|
| RJ01 | Rejection of invention patent application after publication |