CN105300749B - Pretreatment device and method for detecting chemical oxygen demand of wastewater - Google Patents
Pretreatment device and method for detecting chemical oxygen demand of wastewater Download PDFInfo
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- CN105300749B CN105300749B CN201410253044.5A CN201410253044A CN105300749B CN 105300749 B CN105300749 B CN 105300749B CN 201410253044 A CN201410253044 A CN 201410253044A CN 105300749 B CN105300749 B CN 105300749B
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- aeration
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- waste water
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- 239000002351 wastewater Substances 0.000 title claims abstract description 41
- 239000000126 substance Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000001301 oxygen Substances 0.000 title claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000005273 aeration Methods 0.000 claims abstract description 57
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 239000007800 oxidant agent Substances 0.000 claims abstract description 16
- 230000001590 oxidative effect Effects 0.000 claims abstract description 15
- 238000003760 magnetic stirring Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000003647 oxidation Effects 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 14
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 208000006735 Periostitis Diseases 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 210000003460 periosteum Anatomy 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000010865 sewage Substances 0.000 abstract description 2
- 238000002203 pretreatment Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 15
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- FMMSEFNIWDFLKK-UHFFFAOYSA-N [O].OO Chemical compound [O].OO FMMSEFNIWDFLKK-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002894 chemical waste Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 235000020995 raw meat Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention provides a pretreatment device and a pretreatment method for detecting chemical oxygen demand of wastewaterThe method comprises a reactor, a bubble-free aeration membrane component, an aeration pipe, a nitric oxide air inlet system, a magnetic rotor and a magnetic stirring device, wherein an exhaust port is arranged at the top of the reactor, the built-in bubble-free aeration membrane component is connected with the nitric oxide air inlet system through the aeration pipe, the magnetic rotor is arranged at the center of the inner bottom of the reactor, and the magnetic stirring device is arranged at the outer bottom of the reactor. Injecting wastewater into a reactor, starting a magnetic stirring device and a nitric oxide gas inlet system, controlling the amount of nitric oxide in aeration per minute to be 2-5 times of the amount of hydrogen peroxide before Fenton oxidation, controlling the aeration pressure to be 85-95% of the bubble point pressure, and controlling the aeration time to last for 3-6h, and after the reaction is finished, continuously maintaining the stirring state for 10-30 min, namely sampling and measuring COD (chemical oxygen demand)cr. The invention can eliminate the interference of the oxidant on the COD detection result of the wastewater after Fenton treatment and improve the CODcrThe accuracy of the detection result objectively and truly reflects the actual effect of sewage treatment.
Description
Technical field
The invention belongs to water-treatment technology field, the waste water after more particularly to a kind of processing to Fenton carries out COD
(COD) pretreatment unit and preprocess method before detecting.
Background technology
COD (COD) refers to the amount for consuming oxidant when handling water sample with strong oxidizer under certain condition,
As a result it is converted to the content of oxygen (in terms of mg/l).It is an important indicator for characterizing contaminated wastewater degree, and characterizes water body
The composite target of middle reducing substances pollution, generally use potassium dichromate method COD (CODcr) measure.
Hydrogen peroxide (H2O2) it is a kind of oxidizing species, in the depth of waste water in the form of Fenton (Fenton) oxidation system
It is used widely in the field such as degree processing and high concentration hard-degraded organic waste water processing.Although H2O2There is powerful oxidability,
But stronger oxidation material potassium permanganate or potassium bichromate are such as run into the reaction, it can then serve as reducing substances and be oxidized.
So in National Standard Method, the potassium bichromate as oxidant can react with remnants hydrogen peroxide, have a strong impact on its measurement result
Accuracy.
At present, effective processing of used water difficult to degradate is the problem of field of waste water treatment, using Fenton oxidation technique depth
It is more and more to manage the research of waste water, but uses existing measurement standard detection COD, what remaining hydrogen peroxide can be extra in waste water
Consume potassium bichromate so that measurement result is more than actual value, can not reflect the effect of Fenton processing.Therefore, eliminate the effects of the act waste water
The interference factor of COD detections, the true COD numerical value of waste discharge is detected, operation and protection week for waste water treatment process
The ecological environment enclosed, has important practical significance.
The content of the invention
The present invention provides a kind of chemical oxygen demand of waste water detection pretreatment unit and method, and its object is to utilize an oxidation
Nitrogen aeration, the remaining hydrogen peroxide in waste water to be detected is reduced, eliminate the shadow that oxidant detects to COD in Fenton processed waste water
Ring, so as to improve CODcrThe accuracy of testing result, truly reflects water treatment effect.
Therefore, this invention takes following technical solution：
A kind of chemical oxygen demand of waste water detects pretreatment unit, it is characterised in that including reactor, bubble-free aeration film group
Part, aeration tube, nitric oxide gas handling system, magnetic rotor and magnetic stirring apparatus, exhaust is provided with the reactor head of closing
Mouthful, the grid section formula bubble-free aeration membrane module that reactor connects built with pipe in length and breadth, the air inlet that bubble-free aeration membrane module passes through side
Pipe is connected with the aeration tube outside reactor, aeration tube other end connection nitric oxide gas handling system, at reactor inner bottom part center
Position is provided with vane type magnetic rotor, and reactor outer bottom is installed on magnetic stirring apparatus on position corresponding with magnetic rotor.
The bubble-free aeration membrane module is using organic high molecular compound tunica fibrosa, inorganic ceramic membrane, DIC periosteum, nothing
Machine metal film is made.
A kind of chemical oxygen demand of waste water detects preprocess method, and its specific processing method and process are：
Waste water water sample after Fenton is handled is injected in reactor by exhaust outlet, opens magnetic stirring apparatus driving
Magnetic rotor rotates, and waste water water sample is in the state of stirring；Nitric oxide gas handling system is opened simultaneously, nitric oxide passes through
Aeration tube enters bubble-free aeration membrane module, and it is fragrant in waste water water sample to control the nitric oxide amount of substance contained by aeration quantity per minute
2-5 times of hydrogen peroxide amount of substance before processing of pausing aoxidizes, regulation aeration pressure is the 85~95% of bubble point pressure, and aeration time is lasting
3-6h, nitric oxide is set fully to be reacted with the oxidant in waste water；After reaction terminates, 10~30min of stirring is continued to,
Drain residual gas, make in reactor both without remaining hydrogen peroxide oxidant and nitric oxide reduction agent after, you can sampling carries out weight
Potassium chromate method COD is CODcrMeasure.
Beneficial effects of the present invention are：
The present invention can effectively reduce the oxidants such as hydrogen peroxide remaining in coking chemical waste water in reaction chamber, eliminate oxidant pair
The interference of Fenton processed waste water COD testing results, and the noresidue in water, outer waste discharge tolerance is few, does not change original organic
The quantity and property of class material, so as to improve CODcrThe accuracy of testing result, reflect sewage treatment plant objective reality
Actual processing effect.
Brief description of the drawings
Fig. 1 is pretreatment unit structural representation.
In figure：Reactor 1, exhaust outlet 2, magnetic stirring apparatus 3, magnetic rotor 4, bubble-free aeration membrane module 5, nitric oxide
Gas handling system 6, aeration tube 7.
Embodiment
The present invention is primarily directed to the wastewater characteristics after Fenton oxidation PROCESS FOR TREATMENT and using potassium dichromate method measurement COD's
Technical characteristic, remnants oxidant is eliminated in the form of nitric oxide aeration, and be extremely easy in decomposition in itself using gas
Characteristic, under conditions of the organic component in not changing waste water, the final extra consumption for eliminating potassium dichromate method.
As seen from Figure 1, chemical oxygen demand of waste water of the present invention detects pretreatment unit by reactor 1, magnetic stirring apparatus
3rd, magnetic rotor 4, bubble-free aeration membrane module 5, nitric oxide gas handling system 6 and aeration tube 7 are formed.Reactor 1 is a closing
Box type container, exhaust outlet 2 is provided with the top of reactor 1, exhaust outlet 2 can be collected to a small amount of gas discharged, just
In effective recovery and disposal.Reactor 1 built with a grid section formula bubble-free aeration membrane module 5 formed by the pipe in length and breadth connected,
The system of bubble-free aeration membrane module 5 is using organic high molecular compound tunica fibrosa, inorganic ceramic membrane, DIC periosteum, inorganic metal film
It is made, has the characteristics that specific surface area is big, voidage is uniform, micro-pore diameter is small, when aeration pressure is less than bubble point pressure, can produces
The sightless bubble of raw meat eye.The right side of bubble-free aeration membrane module 5 is provided with an air inlet pipe, outside air inlet pipe and reactor 1
Aeration tube 7 connect, the other end of aeration tube 7 is connected in nitric oxide gas handling system 6, passes through nitric oxide gas handling system 6
Control the pressure and the aeration quantity amount of feeding of aeration.Vane type magnetic rotor 4 is provided with the center of the inner bottom part of reactor 1,
Simultaneously magnetic stirring apparatus 3, magnetic agitation are installed at the center of the outer bottom of reactor 1 with 4 corresponding position of magnetic rotor
Device 3 can drive magnetic rotor 4 to be rotated, and rotating speed can be adjusted, and the gas and water inside reactor 1 can be made fully to connect
Touch.
Chemical oxygen demand of waste water of the present invention detects the specific method of pretreatment and process is：
Waste water water sample after Fenton is handled is injected in reactor 1 by exhaust outlet 2, opens magnetic stirring apparatus 3
Driving magnetic rotor 4 rotates, and makes waste water water sample all the time in the state of stirring.Meanwhile nitric oxide gas handling system 6 is opened,
Nitric oxide is entered in bubble-free aeration membrane module 5 by aeration tube 7, controls the nitric oxide material contained by aeration quantity per minute
Measure as 2-5 times of hydrogen peroxide amount of substance before Fenton processing oxidation in waste water water sample, and it is the 85 of bubble point pressure to adjust aeration pressure
~95%, aeration time continues 3-6h, nitric oxide is fully reacted with the oxidant in waste water.After reaction terminates, continue to stir
After mixing 10~30min, residual gas is drained, makes to give up both without remaining hydrogen peroxide oxidant and nitric oxide reduction agent in reactor 1
Original organic species material in water does not change, and the presence of nitric acid is for CODcrDetection have no effect, you can
It is COD that sampling, which carries out potassium dichromate method COD,crMeasure.
Preprocess method of the present invention is described further with reference to embodiment.
Embodiment 1
First, the waste water water sample injected by exhaust outlet 2 into reactor 1 after the processing of 2000mL Fentons, according to Fenton oxygen
Hydrogen peroxide concentration is 10mmol/L before change, and dioxygen water inventory is 20mmol before calculating volume water sample reaction.Afterwards, magnetic force is opened
Agitating device 3, waste water is set to be in the state of stirring by magnetic rotor 4.
Then, nitric oxide gas handling system 6 is opened, the nitric oxide amount of substance contained by aeration quantity per minute is in water sample
2 times of hydrogen peroxide amount of substance before oxidation, aeration pressure are the 85% of bubble point pressure, and aeration time continues 3h.
Nitric oxide gas handling system 6 is finally closed, is continuously maintained at 10min in the state of stirring.Residual gas is drained, is made
Both without remaining hydrogen peroxide oxidant and nitric oxide reduction agent in reactor 1, you can sampling carries out potassium dichromate method chemical oxygen demand
Amount is CODcrMeasure.
Embodiment 2
First, the waste water water sample after the processing of 2000mL Fentons is injected to the inside of reactor 1, Fenton oxygen by exhaust outlet 2
Hydrogen peroxide concentration is 10mmol/L before change, and dioxygen water inventory is 20mmol before calculating volume water sample reaction.Secondly, magnetic force is opened
Agitating device 3 causes waste water to be in the state of stirring.Nitric oxide gas handling system 6 is then turned on, by aeration quantity per minute
Contained nitric oxide amount of substance is 3.5 times of hydrogen peroxide amount of substance before being aoxidized in water sample, and aeration pressure is bubble point pressure
90%, aeration time continues 4h.Finally, nitric oxide gas handling system 6 is closed, is continued after stirring 20min, you can sampling carries out weight
Potassium chromate method COD is CODcrMeasure.
Embodiment 3
First, the waste water water sample after the processing of 2000mL Fentons is injected to the inside of reactor 1, Fenton oxygen by exhaust outlet 2
Hydrogen peroxide concentration is 10mmol/L before change, and dioxygen water inventory is 20mmol before calculating volume water sample reaction.Secondly, magnetic force is opened
Agitating device 3 causes waste water to be in the state of stirring.Then, nitric oxide gas handling system 6, aeration quantity per minute institute are opened
The nitric oxide amount of substance contained is 5 times of hydrogen peroxide amount of substance before being aoxidized in water sample, and aeration pressure is the 95% of bubble point pressure, is exposed
The gas time continues 6h.Finally, nitric oxide gas handling system 6 is closed, is continuously maintained in the state of stirring after 30min, you can take
It is COD that sample, which carries out potassium dichromate method COD,crMeasure.
COD is carried out to the water sample after above-mentioned processingcrAnalysis detection, occurrence is as shown in table 1.
The testing result of 1 each embodiment of table and contrast
As a result show oxidant that the present invention can be remained effectively in shield water for CODcrInfluence during detection, make pre-
Waste water COD after processingcrIt is worth closer to actual COD value.
Claims (1)
1. a kind of chemical oxygen demand of waste water detects preprocess method, it is characterised in that including pretreatment unit, described pretreatment
Device includes reactor, bubble-free aeration membrane module, aeration tube, nitric oxide gas handling system, magnetic rotor and magnetic stirring apparatus,
Exhaust outlet is provided with the reactor head of closing, reactor is still built with the grid section formula bubble-free aeration membrane module connected in length and breadth
Aeration tube connection outside the air inlet pipe and reactor that aeration membrane module passes through side, the connection nitric oxide air inlet of the aeration tube other end
System, vane type magnetic rotor, reactor outer bottom position corresponding with magnetic rotor are provided with reactor inner bottom part center
Put and be installed on magnetic stirring apparatus, bubble-free aeration membrane module is using organic high molecular compound tunica fibrosa, inorganic ceramic membrane, nothing
Machine carbon periosteum, inorganic metal film are made, to the specific method and mistake pre-processed before Fenton processed waste water chemical oxygen demand detection
Cheng Wei：Waste water water sample after Fenton is handled is injected in reactor by exhaust outlet, opens magnetic stirring apparatus driving magnetic
Power rotor rotates, and waste water water sample is in the state of stirring；Nitric oxide gas handling system is opened simultaneously, nitric oxide passes through exposure
Tracheae enters bubble-free aeration membrane module, and it is Fenton in waste water water sample to control the nitric oxide amount of substance contained by aeration quantity per minute
2-5 times of hydrogen peroxide amount of substance before processing oxidation, regulation aeration pressure is the 85~95% of bubble point pressure, and aeration time continues 3-
6h, nitric oxide is set fully to be reacted with the oxidant in waste water；After reaction terminates, 10~30min of stirring is continued to, is arranged
Residual gas to the greatest extent, make in reactor both without remaining hydrogen peroxide oxidant and nitric oxide reduction agent after, you can sampling carries out weight chromium
Sour potassium forensic chemistry oxygen demand is CODcrMeasure.
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| CN201410253044.5A CN105300749B (en) | 2014-06-09 | 2014-06-09 | Pretreatment device and method for detecting chemical oxygen demand of wastewater |
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| CN105300749A CN105300749A (en) | 2016-02-03 |
| CN105300749B true CN105300749B (en) | 2018-02-27 |
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| CN108776057B (en) * | 2018-07-10 | 2021-01-05 | 南京工业大学 | COD (chemical oxygen demand) determination method for eliminating hydrogen peroxide interference based on efficient ultrasonic catalysis |
| CN115508425A (en) * | 2021-06-07 | 2022-12-23 | 中国科学院大连化学物理研究所 | Electrochemical in-situ Raman spectrum reaction tank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201128697Y (en) * | 2007-11-12 | 2008-10-08 | 姜化雨 | Membrane method bubble-free aeration machine |
| CN101691264A (en) * | 2009-09-28 | 2010-04-07 | 南京林业大学 | Sewage treatment method of bamboo charcoal cylindrical sludge quality modifier and cylindrical quality modifier thereof |
| CN102531153A (en) * | 2011-12-21 | 2012-07-04 | 大连大学 | Integrated bubbleless aeration membrane bioreactor |
| CN103508640A (en) * | 2013-10-25 | 2014-01-15 | 环境保护部南京环境科学研究所 | Device for wastewater treatment and sludge reduction and stabilization and wastewater treatment method thereof |
| CN203929472U (en) * | 2014-06-09 | 2014-11-05 | 鞍钢股份有限公司 | Waste water chemical oxygen demand detects preprocessing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4519836B2 (en) * | 2004-03-30 | 2010-08-04 | 財団法人くまもとテクノ産業財団 | Ammonia-containing wastewater treatment method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201128697Y (en) * | 2007-11-12 | 2008-10-08 | 姜化雨 | Membrane method bubble-free aeration machine |
| CN101691264A (en) * | 2009-09-28 | 2010-04-07 | 南京林业大学 | Sewage treatment method of bamboo charcoal cylindrical sludge quality modifier and cylindrical quality modifier thereof |
| CN102531153A (en) * | 2011-12-21 | 2012-07-04 | 大连大学 | Integrated bubbleless aeration membrane bioreactor |
| CN103508640A (en) * | 2013-10-25 | 2014-01-15 | 环境保护部南京环境科学研究所 | Device for wastewater treatment and sludge reduction and stabilization and wastewater treatment method thereof |
| CN203929472U (en) * | 2014-06-09 | 2014-11-05 | 鞍钢股份有限公司 | Waste water chemical oxygen demand detects preprocessing device |
Non-Patent Citations (1)
| Title |
|---|
| 无泡曝气膜生物反应器去除生活污水有机物的研究;李保安 等;《膜科学与技术》;20091231;第29卷(第6期);56-60 * |
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