CN216639023U - Landfill leachate ozone catalytic oxidation advanced treatment unit - Google Patents
Landfill leachate ozone catalytic oxidation advanced treatment unit Download PDFInfo
- Publication number
- CN216639023U CN216639023U CN202220028355.1U CN202220028355U CN216639023U CN 216639023 U CN216639023 U CN 216639023U CN 202220028355 U CN202220028355 U CN 202220028355U CN 216639023 U CN216639023 U CN 216639023U
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- CN
- China
- Prior art keywords
- ozone
- oxidation
- catalytic
- advanced treatment
- landfill leachate
- 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.)
- Expired - Fee Related
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 45
- 230000003647 oxidation Effects 0.000 title claims abstract description 43
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 43
- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000008235 industrial water Substances 0.000 claims description 5
- 238000006385 ozonation reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 14
- 239000012528 membrane Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
- 238000001223 reverse osmosis Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000001728 nano-filtration Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
An advanced treatment device for landfill leachate through ozone catalytic oxidation comprises an ozone destructor, a circulating pump, an ozone oxidation catalytic unit and an ozone generating device; the ozone oxidation catalytic device is provided with a water inlet pipeline connected with the landfill leachate to be treated, two groups of circulating pumps are respectively arranged on two sides of the ozone oxidation catalytic device, and the circulating pumps are respectively communicated with the water inlet pipeline and an ozone conveying pipeline of the ozone generating device; the top of the ozonization catalytic device is provided with a tail gas discharge pipeline which is provided with a branch pipeline to communicate with the ozone destructor; the ozone destructor is provided with an exhaust pipe; the ozone oxidation catalytic device is also provided with a water outlet and a reserved interface. The leachate is treated by an ozone catalytic oxidation advanced treatment device, and the COD of the final effluent reaches below 150mg/L, thereby meeting the national discharge standard.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to an advanced treatment device for landfill leachate ozone catalytic oxidation.
Background
The leachate generated in the process of landfill of the municipal solid waste has the characteristics of high concentration of organic pollutants, high concentration of ammonia nitrogen, high concentration of heavy metal ions and the like, and the treatment difficulty is very high. The treatment of landfill leachate at home and abroad has the traditional methods such as biological method, membrane separation and combination thereof, wherein a membrane biochemical reactor and disc-tube reverse osmosis are the mainstream treatment process at present. In order to meet the discharge requirement of special limit value in GB16889-2008 new standard, a 'biochemistry + membrane' process is generally adopted in the percolate treatment process, nanofiltration and reverse osmosis in membrane separation are used as advanced treatment process units, and clear liquid of the advanced treatment process units reaches the standard and simultaneously generates landfill leachate membrane concentrated solution which accounts for 15-25% of the treatment scale. The MBR effluent of the percolate is generally treated by a nanofiltration/reverse osmosis advanced treatment process in China, but the membrane advanced treatment process has certain problems:
(1) in the process of membrane advanced treatment, a certain amount of membrane concentrated solution is generated, which is about 20% of the scale of water inlet, and the concentrated solution treatment is the main bottleneck existing in the process of percolate treatment at present.
(2) Due to poor water quality, membrane elements subjected to subsequent advanced treatment are seriously polluted and blocked, the water yield of a system is greatly reduced, and the quality of produced water is seriously deteriorated.
(3) Frequent membrane element replacement leads to further increase in operating costs.
In order to overcome the defects of the prior art and simultaneously ensure that the effluent reaches the discharge standard. Therefore, the MBR effluent of the leachate is treated in a full amount, so that the MBR effluent of the leachate can stably reach the standard in the pollution control standard (GB 16889 + 2008) of a domestic garbage landfill, and has important practical significance for reducing toxic and harmful pollutants and reducing regional source control and emission.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a landfill leachate ozone catalytic oxidation advanced treatment device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an advanced treatment device for landfill leachate ozone catalytic oxidation comprises an ozone destructor, a circulating pump, an ozone oxidation catalytic device and an ozone generating device;
the ozone oxidation catalytic device is provided with a water inlet pipeline connected with the landfill leachate to be treated, two groups of circulating pumps are arranged and respectively arranged on the left side and the right side of the ozone oxidation catalytic device, and pipelines arranged on the circulating pumps are respectively communicated with the water inlet pipeline and an ozone conveying pipeline of the ozone generating device;
the top of the ozonization catalytic device is provided with a tail gas discharge pipeline which is provided with a branch pipeline so as to be communicated with the ozone destructor;
the ozone destructor is provided with an exhaust pipe;
the ozone oxidation catalytic device is also provided with a water outlet and a reserved connector.
Preferably, the water inlet pipeline is provided with a one-way valve.
Preferably, the circulating pump is also provided with an aeration pump and an aeration pipe which are communicated with the circulating pump, and the aeration pipe is communicated with the ozone oxidation catalytic device.
Preferably, the ozone generating device comprises an air compressor, an oxygen generator, an ozone generator and an industrial water chiller which are communicated in sequence.
The utility model has the beneficial effects that: the full treatment of the percolate is realized, and the problem that the membrane concentrated solution is difficult to treat in the prior art is avoided; the high-efficiency utilization of ozone is realized through the oxidation catalysis of ozone; the tail gas after catalytic oxidation by ozone is treated by an ozone destructor, so that the environmental pollution is avoided, and meanwhile, the final effluent COD of the leachate after catalytic oxidation by ozone reaches below 150mg/L, thereby meeting the national emission standard.
Drawings
FIG. 1 is a schematic structural diagram of an advanced treatment device for landfill leachate ozone catalytic oxidation provided by the utility model.
In the figure: 1 ozone destroying device, 2 one-way valve, 3 circulating pump, 4 ozone oxidation catalytic unit, 5 reserved interface, 6 industrial water cooler, 7 ozone generator, 8 oxygen generator, 9 air compressor, 10 tail gas discharge pipeline, 11 tail gas discharge pipeline, 12 branch pipeline, 13 exhaust pipe, 14 water inlet pipeline, 15 aeration pipe, 16 aeration pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, the advanced treatment device for catalytic ozonation of landfill leachate comprises an ozone destructor 1, a circulating pump 3, an ozone oxidation catalytic device 4 and an ozone generating device which are arranged in sequence from left to right according to the attached drawing 1;
the ozone oxidation catalytic device 4 is provided with a water inlet pipeline 14 connected with the landfill leachate to be treated, the circulating pumps 3 are provided with two groups and arranged at the left side and the right side of the ozone oxidation catalytic device 4, and pipelines arranged on the circulating pumps 3 can be respectively communicated with the water inlet pipeline 2 and an ozone conveying pipeline 17 of the ozone generating device;
the top of the ozonization catalytic device 4 is provided with a tail gas discharge pipeline 11, and the tail gas discharge pipeline 11 is provided with a branch pipeline 12 which is communicated with the ozone destructor 1;
the ozone destructor is provided with an exhaust pipe 13;
the ozone oxidation catalysis device 4 is also provided with a water outlet 10 and a reserved interface 4.
Further, the water inlet pipeline 14 is provided with a one-way valve 2 to prevent sewage from flowing backwards.
Furthermore, the circulating pump 3 is also provided with an aeration pump 16 and an aeration pipe 15 which are communicated with the circulating pump, and the aeration pipe 15 is communicated with the ozone oxidation catalytic device 4, so that the ozone can be fully diffused and contacted in the liquid.
Further, the ozone generating device comprises an air compressor 9, an oxygen generator 8, an ozone generator 7 and an industrial water chiller 6 which are sequentially communicated from right to left, the air compressor compresses air and then transmits the air to the oxygen generator 8, the oxygen generator transmits oxygen to the ozone generator 7 to generate ozone, the ozone is transmitted to the ozone oxidation catalytic device 4 through an ozone transmission pipeline 17, and the industrial water chiller 6 can cool the oxygen generation process of the ozone generator 7.
The working principle is as follows: leachate to be treated is conveyed to an ozone oxidation catalytic device 4 through a water inlet pipeline 14 and a circulating pump 3, ozone is conveyed through an ozone conveying pipeline 17 and then is mixed with the leachate and then is conveyed into the ozone oxidation catalytic device 4 for ozone catalytic oxidation advanced treatment, ozone can be further fully diffused and contacted in leachate liquid under the action of an aeration pump 16 and an aeration pipe 15, the leachate liquid after the ozone catalytic oxidation advanced treatment meets the discharge standard and then is discharged through a water outlet 10, tail gas generated in the ozone catalytic oxidation process can be directly discharged through a tail gas discharge pipeline 11 when meeting the discharge standard, and the leachate liquid after the ozone catalytic oxidation process is conveyed to an ozone destructor 1 through a branch pipeline 12 for treatment and then is discharged through an exhaust pipe 13 if not meeting the discharge standard.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (4)
1. An advanced treatment device for landfill leachate ozone catalytic oxidation is characterized by comprising an ozone destructor, a circulating pump, an ozone oxidation catalytic device and an ozone generating device;
the ozone oxidation catalytic device is provided with a water inlet pipeline connected with the landfill leachate to be treated, the circulating pumps are provided with two groups and are respectively arranged on the left side and the right side of the ozone oxidation catalytic device, and pipelines arranged on the circulating pumps are respectively communicated with the water inlet pipeline and an ozone conveying pipeline of the ozone generating device;
the top of the ozone oxidation catalytic device is provided with a tail gas discharge pipeline which is provided with a branch pipeline so as to be communicated with the ozone destructor;
the ozone destructor is provided with an exhaust pipe;
the ozone oxidation catalytic device is also provided with a water outlet and a reserved interface.
2. The landfill leachate ozone catalytic oxidation advanced treatment unit of claim 1, wherein the inlet pipe is provided with a check valve.
3. The landfill leachate ozone catalytic oxidation advanced treatment unit as claimed in claim 1, wherein the circulating pump is further provided with an aeration pump and an aeration pipe communicated with the circulating pump, and the aeration pipe is communicated with the ozone oxidation catalytic device.
4. The landfill leachate ozone catalytic oxidation advanced treatment unit of claim 1, wherein the ozone generating device comprises an air compressor, an oxygen generator, an ozone generator and an industrial water chiller which are sequentially communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220028355.1U CN216639023U (en) | 2022-01-06 | 2022-01-06 | Landfill leachate ozone catalytic oxidation advanced treatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220028355.1U CN216639023U (en) | 2022-01-06 | 2022-01-06 | Landfill leachate ozone catalytic oxidation advanced treatment unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216639023U true CN216639023U (en) | 2022-05-31 |
Family
ID=81725013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220028355.1U Expired - Fee Related CN216639023U (en) | 2022-01-06 | 2022-01-06 | Landfill leachate ozone catalytic oxidation advanced treatment unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216639023U (en) |
-
2022
- 2022-01-06 CN CN202220028355.1U patent/CN216639023U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220531 |
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| CF01 | Termination of patent right due to non-payment of annual fee |