CN111115820A - Changeable sewage treatment system of pond volume - Google Patents
Changeable sewage treatment system of pond volume Download PDFInfo
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- CN111115820A CN111115820A CN202010065054.1A CN202010065054A CN111115820A CN 111115820 A CN111115820 A CN 111115820A CN 202010065054 A CN202010065054 A CN 202010065054A CN 111115820 A CN111115820 A CN 111115820A
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- 239000010865 sewage Substances 0.000 title claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- 238000003756 stirring Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005273 aeration Methods 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims abstract description 21
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 16
- 230000008569 process Effects 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 8
- 230000001546 nitrifying effect Effects 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- -1 chlorine ions Chemical class 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a sewage treatment system with a variable tank volume, and relates to the technical field of sewage treatment equipment. The device comprises a reaction tank, a stirring device, an aeration device and a partition plate, wherein the reaction tank comprises a first reaction tank and a second reaction tank which are arranged side by side, two sliding rails are arranged at the tops of the first reaction tank and the second reaction tank, and the two sliding rails are parallel to each other; the division board includes the division board main part, is provided with the gyro wheel with slide rail matched with at the top of division board main part, and the division board that slides through the gyro wheel and drive on the slide rail slides and changes the pond and hold in the reaction tank. The invention changes the proportion of the tank capacity of different functional areas of the system by adjusting the isolation plate, thereby controlling the retention time of each functional area and meeting the requirement that the outlet water stably reaches the standard under different inlet water and environmental conditions. The invention has the advantages of simple control, stable operation, stable water outlet and the like.
Description
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to a sewage treatment system with a variable tank volume.
Background
The nitrification and denitrification are one of the most mature sewage biochemical treatment processes at present and are widely applied to the sewage treatment industry, and the corresponding AO denitrification process has numerous advantages; secondly, carbon-containing organic matters and endogenous metabolites in the raw sewage are used as carbon sources, so that the external cost of the carbon sources is saved; thirdly, the pool A is in the first place, so that part of raw water carbon source is consumed by denitrification, and the load of the aerobic pool can be reduced; after the O tank, organic matters can be further removed, and the effluent is ensured to reach the standard; finally, the alkalinity generated by denitrification of the tank A can compensate the alkalinity consumption in the nitrification process. However, because the AO denitrification process is based on nitrification and denitrification, the related functional microorganisms are autotrophic nitrifying bacteria and heterotrophic denitrifying bacteria, and the generation periods of the two microorganisms are different, so that the environmental requirements are also different.
The conventional sewage treatment plant is complex in water quality of inlet water, large in difference season water temperature difference, and capable of selectively inhibiting nitrifying bacteria or denitrifying bacteria, further causing the proportion imbalance of nitrifying and denitrifying functions, when the growth of nitrifying bacteria is inhibited, the nitrification effect of the system is reduced, the HRT of the aerobic tank is insufficient, the ammonia nitrogen in the outlet water rises, further the total nitrogen exceeds the standard, and when the denitrifying bacteria are inhibited, the HRT of the anoxic tank is too low, so that the incomplete denitrification of the system is easily caused, and the outlet water exceeds the standard. In addition. The influence effect of temperature on nitrification and denitrification is different, and the conventional sewage treatment plant is influenced by low temperature in winter, so that the effluent exceeds the standard due to the reduction of nitrification effect. The basic reason for the over-standard water quality is the imbalance of the proportion of the AO section tank volume, the selective inhibition of the system on the nitrification and denitrification can be realized, and if the tank volumes of the AO section tank volume and the denitrification tank volume can be flexibly adjusted, the over-standard water quality problem can be fundamentally solved.
The research reports of the related aspects of the prior art mainly include:
handsome (handsome. winter A)2Summary of operating experience of O Process in municipal Sewage treatment plants [ J]China Water supply and drainage, 2018,34(18):114-2The treatment effect of the fourth stage of the sewage treatment plant of a certain city in Suzhou city of the O process is that the effluent quality of the sewage treatment plant executes the discharge standard of pollutants for municipal sewage treatment plant (GB 18918)2002). When the water temperature is less than 12 ℃ in winter, the total nitrogen removal effect is not ideal, and the good nitrogen and phosphorus removal effect is achieved by adjusting DO at the aeration tail end, the reflux ratio, the multi-point water inlet point and the internal reflux point, and the effluent is stably discharged up to the standard. In order to ensure the treatment effect in winter in low-temperature seasons, various complex regulation measures are adopted, and the adjustment of the reflux ratio and the multipoint water inflow may increase the energy consumption of the sewage plant, which is inconsistent with the operation strategy of the sewage plant aiming at energy conservation and consumption reduction.
Ma shunjun et al (Ma shunjun, Tang Shi Cheng, etc., cause and countermeasure [ J ] of poor denitrification effect in winter in sewage plants, China water supply and drainage, 2013,29(9):96-99.) aim at the problem of greatly reduced ammonia nitrogen removal rate in winter during the debugging period of upgrading and modifying engineering of Shanghai, south China Hui Zhou Pu Water purification Limited company, and adjust DO concentration in aerobic section. The aerobic section is divided into 5 parts, the dissolved oxygen amount of each section is adjusted by controlling an air pipe valve, the treatment effect of the aerobic section is optimized, and the oxygen demand in the nitration process is met. In addition, the water inlet load is reduced, the HRT of the aerobic section is improved, the sludge age of the system is prolonged, and finally the effluent is guaranteed to reach the standard.
Application number 201710427488X discloses a variable volume integration sewage treatment system of container formula, it includes box sewage treatment plant and the equipment room that is connected with box sewage treatment plant, be provided with two piece at least adjustable baffles in this box sewage treatment plant, and two adjustable baffles separate into the box sewage treatment plant and become the anaerobism pond that can adjust the pool capacity size, good oxygen pond and membrane pool, utilize adjustable baffle to separate into the box sewage treatment plant and become the anaerobism pond of adjustable capacity size, good oxygen pond and membrane pool, thereby reach the dwell time of regulation sewage in each pond, in order to reach the organic load that changes sewage treatment according to handling the quality of water condition, the active sludge concentration of quick control. The volume of the sewage treatment system is changed through the movable baffle, however, the baffle only changes the tank volume after moving, but all tank volume equipment is not changed, if the original aerobic zone is changed into the anoxic zone, the equipment in the current anoxic zone is still the aeration device in the original aerobic zone, and the aeration device is closed after the anoxic operation, so that the fluidization of microorganisms in the tank cannot be ensured, and the sewage treatment system does not have practical feasibility.
Disclosure of Invention
The invention aims to provide a sewage treatment system with a variable tank volume, which can ensure that all core indexes of sewage reach the standard while changing the tank volume.
The technical scheme is as follows:
a sewage treatment system with a variable tank volume comprises a reaction tank, a stirring device, an aeration device and a partition plate, wherein the reaction tank comprises a first reaction tank and a second reaction tank which are arranged side by side, two slide rails are arranged at the tops of the first reaction tank and the second reaction tank and are parallel to each other, and the first reaction tank and the second reaction tank share the two slide rails;
the isolation plate comprises an isolation plate main body, the top of the isolation plate main body is provided with a roller matched with the two slide rails, and the roller slides on the slide rails to drive the isolation plate to slide in the reaction tank and change the tank volume;
a water passing port is formed in the partition plate main body, and an intercepting screen is arranged at the water passing port;
an aeration device is fixedly connected to one side of the partition board main body, and a stirring device is fixedly connected to the other side of the partition board main body; when the partition board main body is installed, one side with the aeration device is positioned in the aerobic tank, and the other side with the stirring device is positioned in the anoxic tank;
the edge that division board main part and pool wall contact all be provided with soft baffle, soft baffle be used for with first reaction tank, second reaction tank keep apart.
In a preferred embodiment of the present invention, a guide bar is disposed near the main body of the isolation plate, the stirring device is disposed on the guide bar, the stirring device includes a motor, a stirring shaft, and a stirring blade, the stirring blade is mounted on the stirring shaft, and the stirring shaft is connected to the guide bar.
In another preferred embodiment of the present invention, the first reaction tank is an anoxic tank, the second reaction tank is an aerobic tank, the aeration device is located at the bottom of the aerobic tank, the stirring device is a submersible stirrer fixedly connected to the guide rod and located in the anoxic tank, and the intercepting screen is disposed at one side of the aerobic tank.
The working principle of the sewage treatment system with the variable tank volume is as follows:
the anaerobic pool and the aerobic pool are provided with the separation plate, the separation plate is provided with the stirring device at one end of the anaerobic pool, one end of the aerobic pool is provided with the aeration device, the separation plate is provided with the roller, the roller can move in a roller track on the upper part of the AO pool (the anaerobic pool and the aerobic pool), the AO pool capacity proportion can be flexibly adjusted by utilizing the separation plate between the AO pools, for example, when the temperature is lower, the activity of aerobic nitrifying bacteria is limited, the HRT of the aerobic pool is not enough to meet the required nitrification effect of the system, so the movable separation plate can increase the A/O pool capacity proportion to meet the required nitrification pool capacity.
Compared with the prior art, the invention has the following beneficial technical effects:
1) the operation is convenient, the isolation plate is provided with the interception screen, and the method can flexibly adapt to an activated sludge process and an MBBR-based sludge membrane combination process (IFAS);
2) the operation stability is strong, the partition plate is provided with a stirring device at the anoxic end and an aeration device at the aerobic end, and the operation state of the AO pool cannot be changed in the moving process of the roller;
3) the effluent has high guarantee, the division plate is provided with the roller, the proportion of the AO pool can be flexibly adjusted through the sliding of the roller, and the effluent is guaranteed to reach the standard;
4) an anaerobic tank can be flexibly added in front of the tank A, and the biological phosphorus removal effect is increased on the basis of nitrogen removal.
The invention has the advantages of simple control, stable operation, stable water outlet and the like.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of a sewage treatment system with a variable tank volume according to the present invention;
FIG. 2 is a side view of a variable volume sewage treatment system of the present invention;
FIG. 3 is a front view of a variable tank volume wastewater treatment system of the present invention;
in the figure: 1. the anaerobic tank, 2, the aerobic tank, B, a partition board, D, a soft baffle, G, a guide rod, S, an interception screen, M, a stirring device, P, an aeration pipe, W, a roller, T and a slide rail.
Detailed Description
The invention provides a sewage treatment system with variable tank volume, and in order to make the advantages and technical scheme of the invention clearer and clearer, the invention is described in detail with reference to specific embodiments.
The structure of the stirring device and the aeration device and the use method thereof can be realized by referring to the prior art.
Referring to fig. 1 to 3, the sewage treatment system with a variable tank volume of the present invention comprises a reaction tank, a stirring device M, an aeration device and a partition plate B, wherein the reaction tank comprises a first reaction tank and a second reaction tank which are arranged side by side, wherein the first reaction tank is an anoxic tank 1, the second reaction tank is an aerobic tank 2, and the tank tops of the first reaction tank and the second reaction tank share two mutually parallel slide rails T which are mutually parallel;
the anoxic tank 1 and the aerobic tank 2 are cuboid, and the partition plate B is arranged between the anoxic tank 1 and the aerobic tank 2, and the partition plate B not only can change the tank capacity, but also can not change the running state of the AO tank.
The main structure of the separator will be described in detail below.
The isolation plate comprises an isolation plate main body, the top of the isolation plate main body is provided with a roller W matched with the slide rail, and the roller W slides on the slide rail to drive the isolation plate to slide in the reaction tank and change the tank volume;
more importantly, one side of the partition plate main body is fixedly connected with an aeration device, and the other side of the partition plate main body is fixedly connected with a stirring device;
the invention has another main innovation point that the aeration device is fixedly connected with the main body of the isolation plate, and the operation state of the AO pool can not be changed when the pool volume is changed.
A water passing port is formed in the partition plate main body, and a plurality of intercepting screens S are arranged at the water passing port, as shown in FIG. 2;
the bottom of foretell division board main part has one section gap apart from the bottom of the pool, sets up at the division board main part department at above-mentioned gap both ends to be curved soft baffle D, and soft baffle D is used for keeping apart first reaction tank, second reaction tank. In order to ensure better isolation of the two reaction tanks, the height of the gap is less than or equal to 1cm, and the width difference between the roller and the sliding rail is less than or equal to 1 cm.
The baffle plate comprises a baffle plate main body, wherein a guide rod G parallel to the baffle plate main body is arranged near the baffle plate main body, a stirring device is arranged on the guide rod and comprises a motor, a stirring shaft and stirring blades, the stirring blades are arranged on the stirring shaft, the stirring shaft is connected to the guide rod, and the using method of the stirring device can be realized by referring to the prior art.
In another preferred embodiment of the present invention, the height of the gap is less than or equal to 1cm, and the difference between the widths of the roller and the width of the slide rail is less than or equal to 1 cm.
The aeration devices such as the aeration pipes P can be arranged in parallel or only laid at the bottom of the aerobic tank, the aeration device is positioned at the bottom of the aerobic tank, and the stirring device is arranged at one side of the anoxic tank.
To facilitate an understanding of the subject innovation of the present application, the present invention is further described below with reference to specific embodiments.
Example 1:
the designed water quantity of a certain sewage treatment plant is 100000m3D, COD, BOD of the influent water5、NH3The TN design value is respectively 1000, 500, 80 and 125mg/L, an AAO process is adopted, the tank volume ratio is 1:4:5, wherein a suspension carrier is added into an aerobic section to form an IFAS (anaerobic baffled Filter) sludge membrane process, and the total residence time of the system is 23.8 h; because the sewage plant is close to the seaside and is influenced by the reverse flow of seawater, the fluctuation of the chlorine ions in the inlet water is large, and the denitrification of an anoxic zone is inhibited when the chlorine ions are high, so that the TN of the outlet water is increased; after the partition plate is arranged between the anoxic tank and the aerobic tank, the partition plate is moved to adjust the AO tank volume ratio to be 5:4 when the chloride ions are higher, the denitrification tank volume is increased, the HRT of the anoxic zone is prolonged, the denitrification effect of the system is ensured, and the COD and the BOD of effluent are ensured5、NH3And TN mean values of 21.4, 9.7, 0.24 and 7.62mg/L, respectively.
Example 2:
design water quantity of 300m for certain integrated equipment3D, COD, BOD of the influent water5、NH3TN and TP design values are respectively 410, 220, 31, 39 and 5.5mg/L, an AAO process based on an activated sludge method is adopted, the ratio of the tank volume is 1:4:6, the sum of the total residence time is 8.0h, the activity of nitrifying bacteria is reduced under the influence of low temperature in winter in the operation process, so that the HRT of an aerobic zone is insufficient, the ammonia nitrogen and TN of effluent exceed standards, after a partition plate is arranged between an anoxic tank and the aerobic tank, the ratio of the anoxic/aerobic tank volume is adjusted to be 3:7 in winter, the capacity of the nitrification tank is increased, the HRT of the aerobic zone is prolonged, the nitrification effect of the system is ensured, and the average values of effluent, COD, BOD5, NH3 and TN are respectively 32.6, 14.1, 1.25, 7.88 and 0.59 mg/L.
The above-mentioned non-listed parts can be obviously realized under the guidance of the above-mentioned examples 1-2.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (3)
1. The utility model provides a changeable sewage treatment system of pond volume, its includes reaction tank, agitating unit, aeration equipment and division board, its characterized in that: the reaction tank comprises a first reaction tank and a second reaction tank which are arranged side by side, two sliding rails are arranged at the tops of the first reaction tank and the second reaction tank, the two sliding rails are parallel to each other, and the first reaction tank and the second reaction tank share the two sliding rails;
the isolation plate comprises an isolation plate main body, the top of the isolation plate main body is provided with a roller matched with the two slide rails, and the roller slides on the slide rails to drive the isolation plate to slide in the reaction tank and change the tank volume;
a water passing port is formed in the partition plate main body, and an intercepting screen is arranged at the water passing port;
an aeration device is fixedly connected to one side of the partition board main body, and a stirring device is fixedly connected to the other side of the partition board main body; when the partition board main body is installed, one side with the aeration device is positioned in the aerobic tank, and the other side with the stirring device is positioned in the anoxic tank;
the edge that division board main part and pool wall contact all be provided with soft baffle, soft baffle be used for with first reaction tank, second reaction tank keep apart.
2. The sewage treatment system with the variable tank volume according to claim 1, wherein: the stirring device comprises a motor, a stirring shaft and stirring blades, wherein the stirring blades are arranged on the stirring shaft, and the stirring shaft is connected to the guide rod.
3. The sewage treatment system with the variable tank volume according to claim 2, wherein: the first reaction tank is an anoxic tank, the second reaction tank is an aerobic tank, the aeration device is positioned at the bottom of the aerobic tank, the stirring device is fixedly connected to the guide rod and is positioned on a submersible stirrer of the anoxic tank, and the intercepting screen is arranged on one side of the aerobic tank.
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Cited By (3)
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| CN111592105A (en) * | 2020-05-27 | 2020-08-28 | 安徽泓济环境科技有限公司 | Tank capacity adjustable AO sewage treatment system |
| CN111847552A (en) * | 2020-08-24 | 2020-10-30 | 合肥安能智控技术有限公司 | Sewage treatment pond in many sewage treatment zone of adjustable type of volume |
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| CN111847552A (en) * | 2020-08-24 | 2020-10-30 | 合肥安能智控技术有限公司 | Sewage treatment pond in many sewage treatment zone of adjustable type of volume |
| CN115806347A (en) * | 2022-12-16 | 2023-03-17 | 无锡马盛环境能源科技有限公司 | Biological denitrification integrated equipment |
| CN115806347B (en) * | 2022-12-16 | 2025-02-11 | 江苏马盛生物科技股份有限公司 | A biological denitrification integrated equipment |
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