CN219885882U - Treatment device for fraction wastewater containing low-concentration hydrogen peroxide - Google Patents
Treatment device for fraction wastewater containing low-concentration hydrogen peroxide Download PDFInfo
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- CN219885882U CN219885882U CN202321251135.6U CN202321251135U CN219885882U CN 219885882 U CN219885882 U CN 219885882U CN 202321251135 U CN202321251135 U CN 202321251135U CN 219885882 U CN219885882 U CN 219885882U
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- tank
- hydrogen peroxide
- fraction
- wastewater
- pretreatment tank
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 239000002351 wastewater Substances 0.000 title claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 14
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000011550 stock solution Substances 0.000 abstract description 2
- 239000003814 drug Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 7
- 238000004821 distillation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a treatment device for low-concentration hydrogen peroxide fraction wastewater, which comprises a pretreatment tank, wherein the top of the pretreatment tank is provided with a plurality of feed inlets, one feed inlet is connected with the discharge end of a stock solution tank through a first pipe group, the other feed inlet is connected with the discharge end of a liquid alkali tank through a second pipe group, the pretreatment tank is connected with the feed end of a reaction tank through a third pipe group, the side wall of the reaction tank is provided with a second discharge outlet, a liquid outlet pipeline is arranged in the second discharge outlet in a matched manner, one end of the liquid outlet pipeline is bent downwards, and the other end of the liquid outlet pipeline extends out of the reaction tank and is connected with an RO membrane group through a fourth pipe group; the tops of the pretreatment tank and the reaction tank are respectively provided with a conductivity meter and a stirring pump in a matching way, and the top of the pretreatment tank is also provided with a PH meter in a matching way. By arranging the pretreatment tank and the reaction tank, the hydrogen peroxide component in the wastewater can be removed and the wastewater can reach the recycling standard, so that the influence of the hydrogen peroxide fraction in the wastewater on the strain of the wastewater treatment station and the COD measured value of the wastewater is avoided.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment containing low-concentration hydrogen peroxide, in particular to a device for treating wastewater containing low-concentration hydrogen peroxide fractions.
Background
Hydrogen peroxide has a strong oxidizing property and is often used as a cleaning agent, an etchant and a photoresist remover for a silicon wafer of a conductor in the electronic semiconductor industry. When hydrogen peroxide is used as an etchant, the hydrogen peroxide needs to be mixed with an electronic grade sulfuric acid solution for use, and a distillation concentration method is adopted for wastewater recovery after the use is finished.
The mixed solution of low-concentration acid and low-concentration hydrogen peroxide generated in the distillation concentration process is not generally used for treating wastewater containing low-concentration hydrogen peroxide fraction in the prior art because the hydrogen peroxide can be automatically decomposed into water and oxygen in the recovery process and the discharge concentration of the hydrogen peroxide is not regulated in the wastewater discharge standard. However, the presence of hydrogen peroxide can cause the strain of the wastewater treatment station to be affected to some extent and can interfere with the wastewater COD measurement; meanwhile, if the low-concentration hydrogen peroxide fraction is treated by adopting a conventional MVR distillation method, the hydrogen peroxide can cause the problem of flushing in the distillation process, so that a distillation system cannot work normally, and the distillation cost is high.
Disclosure of Invention
The inventor aims at the defects in the prior art, and provides a treatment device for wastewater containing low-concentration hydrogen peroxide fraction, and the pretreatment tank and the reaction tank are arranged to remove hydrogen peroxide components in the wastewater and enable the wastewater to reach the recycling standard, so that the influence of the hydrogen peroxide fraction in the wastewater on the strain of a wastewater treatment station and the COD measured value of the wastewater is avoided; meanwhile, the treatment device has low input cost in the early stage, and can effectively treat the hydrogen peroxide fraction in the wastewater, thereby reducing the total cost of wastewater treatment.
The technical scheme adopted by the utility model is as follows:
the utility model provides a contain low concentration hydrogen peroxide solution fraction effluent treatment plant, includes the pretreatment tank, the top of pretreatment tank is provided with several pan feeding mouth, and a pan feeding mouth is connected with the discharge end of former fluid reservoir through first nest of tubes, and another pan feeding mouth is connected with the discharge end of liquid alkali jar through the second nest of tubes, and the bottom center department of pretreatment tank is provided with first discharge gate, first discharge gate is connected with the pan feeding end of retort through the third nest of tubes, is provided with the second discharge gate on the lateral wall of retort, the liquid pipeline is installed to the cooperation in the second discharge gate, the one end of liquid pipeline is bent downwards, and the other end of liquid pipeline stretches out to the outside of retort and is connected with RO membrane group through the fourth nest of tubes simultaneously;
the top of pretreatment tank and retort all cooperates and installs conductivity meter and stirring pump, the agitator is connected to the output of stirring pump, and stirring pump drive agitator stirs the solution in pretreatment tank or the retort, and the PH meter is still installed in the cooperation of the top of pretreatment tank.
As a further improvement of the above technical scheme:
the end of the liquid outlet pipeline positioned in the reaction tank is matched with a stainless steel wire filter screen with 100 meshes.
The liquid outlet pipeline is connected with the fourth pipe group through a Y-shaped filter.
And a bag filter is arranged on the first pipe group between the pretreatment tank and the raw liquid tank in a matched manner.
And the discharge end of the liquid alkali tank is connected with the second pipe group through a metering pump.
The feed inlet of the pretreatment tank is connected with the second pipe group through an electromagnetic valve.
And the first pipe group, the third pipe group and the fourth pipe group are respectively provided with a lifting pump in a matched manner.
Exhaust mechanisms are arranged on the side walls of the pretreatment tank and the reaction tank in a matched mode.
The beneficial effects of the utility model are as follows:
the utility model has compact and reasonable structure and convenient operation, and can effectively treat the wastewater containing the low-concentration hydrogen peroxide fraction by arranging the pretreatment tank and the reaction tank, thereby effectively avoiding the influence of the hydrogen peroxide fraction in the wastewater on the strain of the wastewater treatment station and the COD measured value of the wastewater; meanwhile, the post-maintenance cost of the treatment device is low, and the total cost of wastewater treatment can be effectively reduced.
The utility model also has the following advantages:
(1) According to the utility model, the downward bent liquid outlet pipeline, the stainless steel wire filter screen and the Y-shaped filter are arranged, so that the medicament in the reaction tank can be recycled in the reaction tank all the time after being added once, the medicament consumption is extremely low, the medicament adding time in the wastewater treatment process is greatly reduced, and the secondary generation is effectively avoided.
(2) According to the utility model, the RO membrane group is arranged, so that the wastewater treated by the treatment device can meet the fresh water recycling standard, and the aims of zero wastewater discharge, environmental protection and energy saving are achieved.
(3) According to the utility model, the metering pump and the electromagnetic valve are arranged, so that automatic dosing of the pretreatment tank can be completed, the operation is convenient, and the control is simple and effective.
(4) According to the utility model, by arranging the conductivity meter and the PH meter, the treatment device can judge whether the wastewater is qualified or not according to the property of the solution in the tank, so that the manual workload is reduced, the labor cost can be effectively reduced, and the wastewater treatment efficiency is improved.
(5) The treatment time of the reaction tank and the pretreatment tank is 0.5-1 h, the reaction time is short, and the wastewater treatment time is effectively saved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic diagram of the structure of the raw liquid tank, the liquid caustic tank and the pretreatment tank according to the present utility model.
FIG. 3 is a schematic structural view of a reaction tank in the present utility model.
Wherein: 1. a stock solution tank; 2. a bag filter; 3. a liquid alkali tank; 4. a pretreatment tank; 5. a reaction tank; 6. RO membrane group; 7. a lift pump; 8. a metering pump; 9. a stirring pump; 10. a first tube group; 11. a second tube group; 12. a third tube group; 13. a fourth tube group; 14. a liquid outlet pipe; 15. an electromagnetic valve; 16. a PH meter; 17. conductivity meter.
Detailed Description
The following describes specific embodiments of the present utility model with reference to the drawings.
The structure and the function of the utility model are as follows:
as shown in fig. 1-3, a treatment device for wastewater containing low-concentration hydrogen peroxide fraction comprises a pretreatment tank 4, wherein the top of the pretreatment tank 4 is provided with a plurality of feed inlets, one feed inlet is connected with the discharge end of a raw liquid tank 1 through a first pipe group 10, the other feed inlet is connected with the discharge end of a liquid alkali tank 3 through a second pipe group 11, the center of the bottom of the pretreatment tank 4 is provided with a first discharge outlet, the first discharge outlet is connected with the feed end of a reaction tank 5 through a third pipe group 12, the side wall of the reaction tank 5 is provided with a second discharge outlet, a liquid outlet pipeline 14 is matched and installed in the second discharge outlet, one end of the liquid outlet pipeline 14 is bent downwards, and the other end of the liquid outlet pipeline 14 extends out of the reaction tank 5 and is connected with an RO membrane group 6 through a fourth pipe group 13; the conductivity meter 17 and the stirring pump 9 are installed at the top of the pretreatment tank 4 and the reaction tank 5, the output end of the stirring pump 9 is connected with a stirrer, the stirring pump 9 drives the stirrer to stir the solution in the pretreatment tank 4 or the reaction tank 5, and the PH meter 16 is also installed at the top of the pretreatment tank 4 in a matched mode. The treatment device comprises a raw liquid tank 1, a liquid alkali tank 3, a pretreatment tank 4, a reaction tank 5 and corresponding pump and pipeline components, wherein a PH meter 16 and a conductivity meter 17 are arranged at the top of the pretreatment tank 4, the conductivity meter 17 is arranged at the top of the reaction tank 5, and a detection instrument is matched with a lifting pump 7, a metering pump 8 and an electromagnetic valve 15 to finish automatic wastewater treatment.
The hydrogen peroxide can corrode and destroy RO membranes in the RO membrane group 6, and the wastewater treated by the treatment device can be connected with the RO membrane group 6 for further treatment.
A cylindrical solid chemical for removing the hydrogen peroxide fraction is added in advance to the inside of the reaction tank 5, and the particle size of the chemical is 3mm x 6mm.
The end of the liquid outlet pipeline 14 in the reaction tank 5 is provided with a stainless steel wire filter screen with 100 meshes in a matching way; the liquid outlet pipe 14 is connected to the fourth pipe group 13 through a Y-filter. The section of the liquid outlet pipeline 14 positioned in the reaction tank 5 is bent downwards, and a 100-mesh stainless steel wire filter screen is arranged at the end; the other end is connected with the fourth pipe set 13 through the Y-shaped filter, so that solid medicaments are prevented from being discharged from the reaction tank 5, and therefore the medicaments are enabled to be circulated in the reaction tank 5 all the time after being added once, the medicaments are not reduced theoretically, the medicament adding time in the treatment process is greatly reduced, the wastewater treatment efficiency is effectively improved, and secondary pollution can be avoided.
The main body of the treatment device is composed of a pretreatment tank 4 and a reaction tank 5, the treatment time of the pretreatment tank 4 and the reaction tank 5 is 0.5h-1h, the reaction time is short, and the wastewater treatment efficiency is high.
A bag filter 2 is mounted on the first tube group 10 between the pretreatment tank 4 and the raw liquid tank 1 in a matched manner. The bag filter 2 is used for preliminarily filtering impurities in the wastewater.
The discharge end of the liquid alkali tank 3 is connected with a second pipe group 11 through a metering pump 8; the feed inlet of the pretreatment tank 4 is connected with the second tube group 11 through an electromagnetic valve 15. The metering pump 8 and the electromagnetic valve 15 are communicated with an external control system, and can be used for automatically adding medicines into the pretreatment tank 4, so that the PH value of the solution in the pretreatment tank 4 is kept at about 8, the decomposition rate of the hydrogen peroxide fraction is reduced, and the hydrogen peroxide fraction in the solution in the pretreatment tank 4 is kept stable, so that the subsequent full reaction in the reaction tank 5 is realized.
The first tube group 10, the third tube group 12 and the fourth tube group 13 are provided with a lift pump 7 in a matched manner. The lift pump 7 is used for transporting waste water.
Exhaust mechanisms are arranged on the side walls of the pretreatment tank 4 and the reaction tank 5 in a matched mode. The exhaust mechanism is respectively and hermetically installed with the pretreatment tank 4 and the reaction tank 5, and is used for exhausting the reacted gas in the tank so as to ensure the stability of the pressure in the tank.
The working process of the utility model is as follows:
the wastewater containing the low-concentration hydrogen peroxide fraction is collected by a raw liquid tank 1, a lifting pump 7 on a first pipe group 10 pumps the wastewater in the raw liquid tank 1 into a pretreatment tank 4, and a bag filter 2 on the first pipe group 10 performs preliminary filtration on the wastewater raw liquid;
the metering pump 8 and the electromagnetic valve 15 are opened, the alkaline solution in the liquid alkali tank 3 is added into the pretreatment tank 4 to adjust the PH value of the wastewater in the pretreatment tank 4, and the property of the wastewater in the pretreatment tank 4 is monitored through the PH meter 16 and the conductivity meter 17 at the top of the pretreatment tank 4;
simultaneously, a stirring pump 9 at the top of the pretreatment tank 4 is started to stir and mix the wastewater and the alkaline solution in the pretreatment tank 4;
after the parameters displayed by the PH meter 16 and the conductivity meter 17 at the top of the pretreatment tank 4 are qualified, pumping the wastewater solution in the pretreatment tank 4 into the reaction tank 5 through the lifting pump 7 on the third pipe group 12;
the inside of the reaction tank 5 is pre-provided with a solid medicament for treating the hydrogen peroxide fraction, and the solid medicament is deposited at the bottom of the reaction tank 5;
starting a stirring pump 9 at the top of the reaction tank 5 to fully react the wastewater solution in the reaction tank 5 with the solid medicament;
after a period of reaction, if the value displayed by the conductivity meter 17 at the top of the reaction tank 5 is qualified, the wastewater solution in the reaction tank 5 is pumped into the RO membrane group 6 by the lifting pump 7 on the fourth pipe group 13, and the solid medicament in the reaction tank 5 can be prevented from being discharged from the reaction tank 5 by the Y-shaped filter and the 100-mesh stainless steel wire filter screen at the end head of the liquid outlet pipe 14;
after passing through the RO membrane group 6, the obtained fresh water can be recycled, thereby achieving the purpose of zero discharge of wastewater.
The PH value of the wastewater is regulated by arranging the pretreatment tank 4, so that the wastewater is ensured to be alkalescent, and the decomposition of the hydrogen peroxide fraction in the solution in the pretreatment tank 4 is inhibited; through setting up retort 5 to throw the solid medicament in retort 5 in advance, make the hydrogen peroxide solution fraction in the solution in retort 5 fully decompose, thereby accomplish the processing to the hydrogen peroxide solution fraction in the waste water with high efficiency clean, low cost, energy-concerving and environment-protective, waste water treatment efficiency is high.
The above description is intended to illustrate the utility model and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the utility model.
Claims (8)
1. A treatment device for fraction wastewater containing low-concentration hydrogen peroxide is characterized in that: the pretreatment device comprises a pretreatment tank (4), wherein a plurality of feed inlets are formed in the top of the pretreatment tank (4), one feed inlet is connected with the discharge end of a raw liquid tank (1) through a first pipe group (10), the other feed inlet is connected with the discharge end of a liquid alkali tank (3) through a second pipe group (11), a first discharge outlet is formed in the center of the bottom of the pretreatment tank (4), the first discharge outlet is connected with the feed end of a reaction tank (5) through a third pipe group (12), a second discharge outlet is formed in the side wall of the reaction tank (5), a liquid outlet pipeline (14) is installed in the second discharge outlet in a matched mode, one end of the liquid outlet pipeline (14) is bent downwards, and the other end of the liquid outlet pipeline (14) extends out of the reaction tank (5) and is connected with an RO membrane group (6) through a fourth pipe group (13);
the top of pretreatment tank (4) and retort (5) all cooperates and installs conductivity meter (17) and stirring pump (9), the agitator is connected to the output of stirring pump (9), and stirring pump (9) drive agitator stirs the solution in pretreatment tank (4) or retort (5), and PH meter (16) are still installed in the top cooperation of pretreatment tank (4).
2. The treatment device for the fraction wastewater containing the low-concentration hydrogen peroxide as claimed in claim 1, wherein: the end of the liquid outlet pipeline (14) positioned in the reaction tank (5) is provided with a stainless steel wire filter screen with 100 meshes in a matching way.
3. The treatment device for the fraction wastewater containing the low-concentration hydrogen peroxide as claimed in claim 1, wherein: the liquid outlet pipeline (14) is connected with the fourth pipe group (13) through a Y-shaped filter.
4. The treatment device for the fraction wastewater containing the low-concentration hydrogen peroxide as claimed in claim 1, wherein: the first pipe group (10) between the pretreatment tank (4) and the raw liquid tank (1) is provided with a bag filter (2) in a matching way.
5. The treatment device for the fraction wastewater containing the low-concentration hydrogen peroxide as claimed in claim 1, wherein: the discharge end of the liquid alkali tank (3) is connected with a second pipe group (11) through a metering pump (8).
6. The treatment device for the fraction wastewater containing the low-concentration hydrogen peroxide as claimed in claim 1, wherein: the feed inlet of the pretreatment tank (4) is connected with the second pipe group (11) through an electromagnetic valve (15).
7. The treatment device for the fraction wastewater containing the low-concentration hydrogen peroxide as claimed in claim 1, wherein: the first tube group (10), the third tube group (12) and the fourth tube group (13) are all provided with a lifting pump (7) in a matched mode.
8. The treatment device for the fraction wastewater containing the low-concentration hydrogen peroxide as claimed in claim 1, wherein: exhaust mechanisms are arranged on the side walls of the pretreatment tank (4) and the reaction tank (5) in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321251135.6U CN219885882U (en) | 2023-05-23 | 2023-05-23 | Treatment device for fraction wastewater containing low-concentration hydrogen peroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321251135.6U CN219885882U (en) | 2023-05-23 | 2023-05-23 | Treatment device for fraction wastewater containing low-concentration hydrogen peroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219885882U true CN219885882U (en) | 2023-10-24 |
Family
ID=88395884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321251135.6U Active CN219885882U (en) | 2023-05-23 | 2023-05-23 | Treatment device for fraction wastewater containing low-concentration hydrogen peroxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219885882U (en) |
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2023
- 2023-05-23 CN CN202321251135.6U patent/CN219885882U/en active Active
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