CN107199239A - A kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology - Google Patents
A kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology Download PDFInfo
- Publication number
- CN107199239A CN107199239A CN201710471609.0A CN201710471609A CN107199239A CN 107199239 A CN107199239 A CN 107199239A CN 201710471609 A CN201710471609 A CN 201710471609A CN 107199239 A CN107199239 A CN 107199239A
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- Prior art keywords
- cylinder body
- percolate
- reacting cylinder
- contaminated soil
- processing unit
- Prior art date
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- 239000002689 soil Substances 0.000 title claims abstract description 42
- 239000000575 pesticide Substances 0.000 title claims abstract description 32
- 230000003647 oxidation Effects 0.000 title claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 14
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000696 magnetic material Substances 0.000 claims abstract description 32
- 239000002253 acid Substances 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000010992 reflux Methods 0.000 claims abstract description 15
- 230000008676 import Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 15
- 229910052719 titanium Inorganic materials 0.000 claims description 15
- 239000010936 titanium Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000002262 irrigation Effects 0.000 claims description 5
- 238000003973 irrigation Methods 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 17
- 239000003905 agrochemical Substances 0.000 description 14
- 238000003672 processing method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000006303 photolysis reaction Methods 0.000 description 3
- 230000015843 photosynthesis, light reaction Effects 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- RPAJSBKBKSSMLJ-DFWYDOINSA-N (2s)-2-aminopentanedioic acid;hydrochloride Chemical class Cl.OC(=O)[C@@H](N)CCC(O)=O RPAJSBKBKSSMLJ-DFWYDOINSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002068 microbial inoculum Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
Abstract
A kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology disclosed by the invention, including：Guide layer, mixed layer and nano magnetic material layer are disposed with one reacting cylinder body, reacting cylinder body from the bottom to top, is located in the bottom of reacting cylinder body below guide layer and offers a flow-guiding mouth；One leachate collection groove, the percolate import of leachate collection groove is connected with flow-guiding mouth；One reflux pump, the import of reflux pump is connected with the percolate outlet of leachate collection groove；One water-locator, water-locator is located at the top of reacting cylinder body, and the outlet of the water inlet and reflux pump of water-locator is connected；One ultraviolet lamp, ultraviolet lamp is located at the top of reacting cylinder body；One acid solution adds mechanism, and acid solution can be added on nano magnetic material layer by acid solution addition mechanism；And one hydrogen peroxide addition mechanism, hydrogen peroxide addition mechanism can by hydrogen peroxide solution added to nano magnetic material layer on.Process cycle of the present invention is short, and processing cost is low, high treating effect.
Description
Technical field
The present invention relates to pesticide contaminated soil processing unit technical field, more particularly to a kind of utilization high-level oxidation technology
Pesticide contaminated soil processing unit.
Background technology
With the development and the expansion of urbanization process of industrial or agricultural, waste water that a large amount of soil are discharged by agricultural chemicals or insecticide factory,
Solid waste pollution.At present, pesticide contaminated soil processing method mainly has Thermal desorption method and advanced oxidation processes, Thermal desorption method cost
Height, and atmosphere pollution is easily generated, the atmospheric environment to surrounding causes certain pollution.Advanced oxidation processes add substantial amounts of
Chemical agent, easy contaminated soil.Current microbial method is increasingly paid close attention to, for example, Application No. 201610442960.2
Chinese patent application disclose the processing method that a kind of bioanalysis repairs pesticide contaminated soil, the processing method is although ecological
Preferably, but reaction time is extremely long, this is due to that agricultural chemicals is difficult to be dissolved in water, it is difficult to by caused by biological obtain, while at this
Reason method needs to add expensive microbial inoculum and enzyme, and processing cost is higher.
Therefore, applicant carried out beneficial exploration and trial, have found result of the above problems, it will be detailed below being situated between
The technical scheme continued is produced under this background.
The content of the invention
The technical problems to be solved by the invention：The problem of existing for existing pesticide contaminated soil processing method and carry
For a kind of process cycle is short, processing cost is low, the pesticide contaminated soil of high treating effect utilization high-level oxidation technology processing dress
Put.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology, including：
Guide layer, mixed layer are disposed with one reacting cylinder body bottom of with, the reacting cylinder body from the bottom to top and is received
Rice magnetic material layer, the mixed layer is at least mixed by pesticide contaminated soil, alcohol and biogas residue, in the reacting cylinder body
Bottom be located at the guide layer below offer a flow-guiding mouth；
There is one leachate collection groove, the leachate collection groove percolate import and a percolate to export, described to ooze
The percolate import of filtrate collecting tank is connected by a percolate delivery line with the flow-guiding mouth of the reacting cylinder body；
One reflux pump, the import of the reflux pump is exported by the percolate of a connecting tube and the leachate collection groove to be connected
Connect；
One water-locator, the water-locator is located at the top of the reacting cylinder body, and the water inlet of the water-locator passes through one time
Flow tube is connected with the outlet of the reflux pump；
One ultraviolet lamp, the ultraviolet lamp is located at the top of the reacting cylinder body and can be to receiving in the reacting cylinder body
Rice magnetic material layer is irradiated；
One acid solution adds mechanism, and the acid solution addition mechanism internal memory is placed with acid solution and can be by the acidity
Solution is added as needed on the nano magnetic material layer in the reacting cylinder body；And
One hydrogen peroxide adds mechanism, and the hydrogen peroxide addition mechanism internal memory is placed with hydrogen peroxide solution and can be by the hydrogen peroxide
Solution is added as needed on the nano magnetic material layer in the reacting cylinder body.
In a preferred embodiment of the invention, pesticide contaminated soil, alcohol and the biogas residue in the mixed layer it
Between mixed proportion be 1：0.1~0.5：0.1~0.5.
In a preferred embodiment of the invention, uniformly spray a certain amount of on the surface of nano magnetic material layer
Nano titanium material.
In a preferred embodiment of the invention, the nano titanium material is titanium dioxide.
In a preferred embodiment of the invention, the intensity of spray irrigation of the nano titanium material is per square meter 1g~1000g.
In a preferred embodiment of the invention, it is provided with a stop valve on the percolate delivery line.
The course of work of the pesticide contaminated soil processing unit of the present invention is as follows：
Guide layer first is placed in the bottom of reacting cylinder body, for percolate export；Then by alcohol and pollution by pesticides soil
Earth is mixed with certain proportion, after 0.1~20h of reaction so that the agricultural chemicals in soil is fully dissolved in alcohol, then addition
Biogas residue, the mixture of biogas residue, alcohol and pesticide contaminated soil is added in reacting cylinder body, forms mixed layer；In reacting cylinder body
One layer of nano magnetic material layer is laid on interior mixed layer top, and sprays a certain amount of nanometer on the surface of nano magnetic material layer
Titanium material.
During operation, the percolate of mixed layer is delivered to leachate collection by percolate delivery line every 1h~200h
Percolate, is then delivered in water-locator by groove by reflux pump, and percolate is sprayed to nano magnetic material layer by water-locator
It is dissolved on surface, in percolate and unreacted agricultural chemicals and other organic macromolecules is retained by nano magnetic material layer absorption,
Part is cooperateed with by uviol lamp and nano titanium material and degraded under the photolysis produced；Mechanism is then added and double by acid solution
Oxygen water addition mechanism imports acid solution and hydrogen peroxide solution, and acid solution assists the Fe dissolutions in the nano magnetic material of part
Fenton effect is produced with hydrogen peroxide solution, by organic pollutant degradation, percolate comes back to mixed layer.
As a result of technical scheme as above, the beneficial effects of the present invention are：
1st, pesticide contaminated soil processing unit of the invention is by high-level oxidation technology and the synergy of microorganism, rapidly
The organic agricultural chemicals contained in disposal soil, process cycle is short, and processing cost is low, high treating effect.
2nd, alcohol can play a part of organic agricultural chemicals in Fast Stripping soil, be easy to biogas residue microorganism to utilize and make agricultural chemicals
Into percolate, it is easy to later use, while also becoming the carbon source of biogas residue, kills two birds with one stone.
3rd, nano magnetic material serves the effect of organic macromolecule in adsorptive percolation liquid, while can be in acid and hydrogen peroxide
In the presence of produce Fenton effect, kill two birds with one stone.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1, what is provided in figure is a kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology, including anti-
Answer cylinder 100, leachate collection groove 200, reflux pump 300, water-locator 400, ultraviolet lamp 500, acid solution addition mechanism 600
And hydrogen peroxide addition mechanism 700.
Reacting cylinder body 100 is a band bottom cylinder, i.e. its bottom lock, and top is opened wide.In reacting cylinder body 100 from the bottom to top according to
It is secondary to be provided with guide layer 110, mixed layer 120 and nano magnetic material layer 130.It is located at water conservancy diversion in the bottom of reacting cylinder body 100
The lower section of layer 110 offers a flow-guiding mouth 101.
Mixed layer 120 is at least mixed by pesticide contaminated soil, alcohol and biogas residue, and the agricultural chemicals in mixed layer 120 is dirty
It is 1 to contaminate the mixed proportion between soil, alcohol and biogas residue：0.1~0.5：0.1~0.5.In nano magnetic material layer 130
A certain amount of nano titanium material is uniformly sprayed on surface, nano titanium material is titanium dioxide, and the intensity of spray irrigation of nano titanium material is
Per square meter 1g~1000g.
Leachate collection groove 200 has a percolate import 210 and percolate outlet 220, leachate collection groove 200
Percolate import 210 is connected by a percolate delivery line 810 with the flow-guiding mouth 101 of reacting cylinder body 100.In percolate delivery line
A stop valve 811 is provided with 810.
The import of reflux pump 300 is connected by a connecting tube 820 with the percolate outlet 220 of leachate collection groove 200.Cloth
Hydrophone 400 is located at the top of reacting cylinder body 100, and the water inlet 410 of water-locator 400 passes through a return duct 830 and reflux pump 300
Outlet connection.Ultraviolet lamp 500 is located at the top of reacting cylinder body 100 and can be to the layer of the nano magnetic material in reacting cylinder body 100
130 are irradiated.Acid solution addition mechanism 600 internal memory is placed with acid solution and can be added as needed to acid solution instead
Answer on the nano magnetic material layer 130 in cylinder 100.Hydrogen peroxide addition mechanism 700 internal memory be placed with hydrogen peroxide solution and can will pair
The oxygen aqueous solution is added as needed on the nano magnetic material layer 130 in reacting cylinder body 100.
Embodiment 1
Pesticide contaminated soil content in the present embodiment is 2048mg/kg.
Guide layer 110 is first placed in the bottom of reacting cylinder body 100, for percolate export；Then by alcohol and agricultural chemicals
Contaminated soil is with 0.3:1 is mixed, after reaction 2h so that the agricultural chemicals in soil is fully dissolved in alcohol, then adds natural pond
Slag, the mixture of biogas residue, alcohol and pesticide contaminated soil is added in reacting cylinder body, mixed proportion is 0.3:0.3:1, formed
Mixed layer 120；One layer of nano magnetic material layer is laid on mixed layer top in reacting cylinder body, and in nano magnetic material layer
A certain amount of nano titanium material is sprayed on surface, and intensity of spray irrigation is 100g per square meter.
During operation, the percolate of mixed layer 120 is delivered to percolate by percolate delivery line 810 every 24h and received
Collect groove 200, then percolate is delivered in water-locator 400 by reflux pump 300, percolate is sprayed to instead by water-locator 400
On the surface for answering the nano magnetic material layer 130 in cylinder 100, it is dissolved in percolate and unreacted agricultural chemicals and other organic
Macromolecular is retained by the absorption of nano magnetic material layer 130, and the photolysis produced is partly cooperateed with by uviol lamp and nano titanium material
Lower degraded；Mechanism 600 is then added by acid solution and hydrogen peroxide adds the importing acid solution of mechanism 700 and dioxygen is water-soluble
Liquid, acid solution is by the Fe dissolutions in the nano magnetic material of part, and collaboration hydrogen peroxide solution produces Fenton effect, by organic contamination
Thing is degraded, and percolate comes back to mixed layer.
After 15 days dispose, the pesticide concentration in soil is less than 1mg/kg.
Embodiment 2
Pesticide contaminated soil content in the present embodiment is 1023mg/kg.
Guide layer 110 is first placed in the bottom of reacting cylinder body 100, for percolate export；Then by alcohol and agricultural chemicals
Contaminated soil is with 0.2:1 is mixed, after reaction 1h so that the agricultural chemicals in soil is fully dissolved in alcohol, then adds natural pond
Slag, the mixture of biogas residue, alcohol and pesticide contaminated soil is added in reacting cylinder body, mixed proportion is 0.4:0.2:1, formed
Mixed layer 120；One layer of nano magnetic material layer is laid on mixed layer top in reacting cylinder body, and in nano magnetic material layer
A certain amount of nano titanium material is sprayed on surface, and intensity of spray irrigation is 300g per square meter.
During operation, the percolate of mixed layer 120 is delivered to percolate by percolate delivery line 810 every 12h and received
Collect groove 200, then percolate is delivered in water-locator 400 by reflux pump 300, percolate is sprayed to instead by water-locator 400
On the surface for answering the nano magnetic material layer 130 in cylinder 100, it is dissolved in percolate and unreacted agricultural chemicals and other organic
Macromolecular is retained by the absorption of nano magnetic material layer 130, and the photolysis produced is partly cooperateed with by uviol lamp and nano titanium material
Lower degraded；Mechanism 600 is then added by acid solution and hydrogen peroxide adds the importing acid solution of mechanism 700 and dioxygen is water-soluble
Liquid, acid solution is by the Fe dissolutions in the nano magnetic material of part, and collaboration hydrogen peroxide solution produces Fenton effect, by organic contamination
Thing is degraded, and percolate comes back to mixed layer.
After 8 days dispose, the pesticide concentration in soil is less than 1mg/kg.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology, it is characterised in that including：
Guide layer, mixed layer and nano magnetic are disposed with from the bottom to top in one reacting cylinder body bottom of with, the reacting cylinder body
Property material layer, the mixed layer is at least mixed by pesticide contaminated soil, alcohol and biogas residue, under the reacting cylinder body
Portion, which is located at below the guide layer, offers a flow-guiding mouth；
There is one leachate collection groove, the leachate collection groove percolate import and a percolate to export, the percolate
The percolate import of collecting tank is connected by a percolate delivery line with the flow-guiding mouth of the reacting cylinder body；
One reflux pump, the import of the reflux pump is connected by a connecting tube with the percolate outlet of the leachate collection groove；
One water-locator, the water-locator is located at the top of the reacting cylinder body, and the water inlet of the water-locator passes through a return duct
Outlet with the reflux pump is connected；
One ultraviolet lamp, the ultraviolet lamp is located at the top of the reacting cylinder body and can be to the nano magnetic in the reacting cylinder body
Property material layer is irradiated；
One acid solution adds mechanism, and the acid solution addition mechanism internal memory is placed with acid solution and can be by the acid solution
It is added as needed on the nano magnetic material layer in the reacting cylinder body；And
One hydrogen peroxide adds mechanism, and the hydrogen peroxide addition mechanism internal memory is placed with hydrogen peroxide solution and can be by the hydrogen peroxide solution
It is added as needed on the nano magnetic material layer in the reacting cylinder body.
2. the pesticide contaminated soil processing unit of high-level oxidation technology is utilized as claimed in claim 1, it is characterised in that described
The mixed proportion between pesticide contaminated soil, alcohol and biogas residue in mixed layer is 1：0.1~0.5：0.1~0.5.
3. the pesticide contaminated soil processing unit of high-level oxidation technology is utilized as claimed in claim 1, it is characterised in that in institute
A certain amount of nano titanium material is uniformly sprayed on the surface for stating nano magnetic material layer.
4. the pesticide contaminated soil processing unit of high-level oxidation technology is utilized as claimed in claim 3, it is characterised in that described
Nano titanium material is titanium dioxide.
5. the pesticide contaminated soil processing unit of high-level oxidation technology is utilized as claimed in claim 4, it is characterised in that described
The intensity of spray irrigation of nano titanium material is per square meter 1g~1000g.
6. the pesticide contaminated soil processing unit of high-level oxidation technology is utilized as claimed in claim 1, it is characterised in that in institute
State and a stop valve is provided with percolate delivery line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471609.0A CN107199239A (en) | 2017-06-20 | 2017-06-20 | A kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471609.0A CN107199239A (en) | 2017-06-20 | 2017-06-20 | A kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107199239A true CN107199239A (en) | 2017-09-26 |
Family
ID=59907105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710471609.0A Pending CN107199239A (en) | 2017-06-20 | 2017-06-20 | A kind of pesticide contaminated soil processing unit of utilization high-level oxidation technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN107199239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497849A (en) * | 2017-10-10 | 2017-12-22 | 吴洪生 | The in situ of pedo relict antibiotic/agricultural chemicals eliminates recovery technique and application |
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| CN107497849A (en) * | 2017-10-10 | 2017-12-22 | 吴洪生 | The in situ of pedo relict antibiotic/agricultural chemicals eliminates recovery technique and application |
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Application publication date: 20170926 |