CN220412992U - Industrial wastewater pretreatment tank - Google Patents
Industrial wastewater pretreatment tank Download PDFInfo
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- CN220412992U CN220412992U CN202321599320.4U CN202321599320U CN220412992U CN 220412992 U CN220412992 U CN 220412992U CN 202321599320 U CN202321599320 U CN 202321599320U CN 220412992 U CN220412992 U CN 220412992U
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- industrial wastewater
- pretreatment tank
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- wastewater
- wastewater pretreatment
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002351 wastewater Substances 0.000 claims abstract description 27
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 17
- 238000005188 flotation Methods 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 10
- 238000004065 wastewater treatment Methods 0.000 abstract description 7
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 5
- 150000002500 ions Chemical class 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 12
- 239000003921 oil Substances 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 238000005868 electrolysis reaction Methods 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000001590 oxidative effect Effects 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 hydroxyl free radical Chemical class 0.000 description 2
- 238000005949 ozonolysis reaction Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Abstract
The utility model belongs to the field of ecological environment, and particularly relates to an industrial wastewater pretreatment tank. Industrial wastewater is intercepted by a grid and deposited in a grit chamber, flows into an electrolytic air floatation area of a pretreatment tank through a pipeline, and is electrolyzed by an electrode plate to generate H 2 And O 2 And air bubbles are used for separating suspended matters and oil matters in water through air flotation, so that the SS content is reduced, and meanwhile, part of dissolved organic matters and heavy metal ions are electrolyzed, oxidized and reduced. Ozone aeration area and hydrogen peroxide agent are combined to promoteAnd (3) generating hydroxyl free radicals with non-selectivity and strong oxidability, removing refractory organic matters, reducing biotoxicity and improving biodegradability of wastewater. In-pool O 3 Can sterilize and disinfect, and increase the content of dissolved oxygen. The gas in the collecting tank can be used for subsequent wastewater treatment through the fan and the gas collecting pipe. Finally, the slag remover is used for removing dirt on the water surface, and the treated water flows out through the water outlet. The utility model can improve the biodegradability of industrial wastewater, reduce the subsequent biological treatment load, and simultaneously recover gas resources with lower influence on environment.
Description
Technical Field
The utility model belongs to the field of ecological environment, and in particular relates to an industrial wastewater pretreatment tank which consists of an electrolysis air floatation area and an ozone aeration area and adopts electric floatation combined with advanced ozone/hydrogen peroxide oxidation.
Background
The current domestic industry is relatively different from the production process, so that the industrial wastewater has complex components, relatively high chromaticity, relatively heavy peculiar smell, relatively high toxicity and a large amount of organic pollutants which are difficult to biodegrade. If only single biochemical treatment is adopted in the wastewater treatment process, the COD content in the wastewater is difficult to reduce, and the expected treatment effect and the national emission standard cannot be achieved. Therefore, the pretreatment of the industrial wastewater is needed before the biochemical treatment, the biodegradability of the industrial wastewater is improved, and the biochemical treatment load is reduced, so that the effluent quality is ensured to reach the standard.
Common industrial wastewater pretreatment technologies mainly include an air flotation method, a coagulating sedimentation method, an advanced oxidation method (AOPs) and the like. Wherein, AOPs can effectively remove benzene ring organic matters, aromatic compounds and long-chain organic matters with large molecular weight which are organic pollutants with high stability and difficult degradability in the wastewater, reduce the load of the pollutants, further reduce the toxicity of the wastewater and improve the biodegradability of the wastewater. Ozone (O) 3 ) The strong oxidant has high reaction speed with organic matters, does not produce secondary pollution, can be used for effectively sterilizing, decoloring, deodorizing, reducing COD and the like in sewage treatment, has selectivity in oxidation reaction, and has poor oxidation effect on certain halogenated hydrocarbon, pesticides and the like. Hydrogen peroxide (H) 2 O 2 ) Can be combined with O 3 Catalytic reaction to generate hydroxyl free radical (OH) with stronger oxidability and lower reaction selectivity, solving the problem of independent O 3 Problem of selectivity of oxidation, increase of O 3 Oxidation efficiency. The electrolysis air floatation method mainly utilizes the electrolysis of water, under the action of direct current electric field, a series of electrochemical reactions are produced on the electrode, and a large quantity of H can be produced on the surfaces of cathode and anode 2 And O 2 Bubbles of air, theseThe micro-bubbles can be used for floating a large amount of suspended substances and oil substances in water in the ascending process.
Disclosure of Invention
Aiming at the main water quality characteristics of the current industrial wastewater, the utility model aims to design a pretreatment tank combining electric flotation and ozone/hydrogen peroxide advanced oxidation, wherein the electrolysis wastewater directly oxidizes and reduces part of heavy metal ions and soluble organic matters, and simultaneously generates bubbles to separate suspended matters and oil matters in the water through air flotation. O (O) 3 And H is 2 O 2 Reaction to form OH, in the presence of O 3 The method can remove the organic matters difficult to degrade in the water while realizing the sterilization, disinfection, decoloration and deodorization of the wastewater, improve the biodegradability of the wastewater and ensure the quality of the subsequent effluent.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an industrial wastewater pretreatment tank comprises an electrolysis air flotation area, an ozone aeration area, a water inlet 1, an electrode plate 2, an electrode plate circuit 3, an overflow port 4, a dosing pipe 5, an ozone distribution pipeline 6, an aeration port 7, a gas collecting pipe, a fan, a slag discharge port 10, a slag remover 11, a ventilation pedal, a water outlet 13, an outer tank wall 14 and an inner tank wall 15;
the gas collecting tube comprises a first gas collecting tube 8a and a second gas collecting tube 8b; the fans comprise a first fan 9a and a second fan 9b; the ventilation pedals comprise a first ventilation pedal 12a and a second ventilation pedal 12b;
the water inlet 1 is arranged at one end of the outer tank wall 14, and industrial wastewater which is intercepted by the grating and precipitated by the grit chamber flows into the pretreatment tank;
the electrode plates 2 are arranged one by one along the bottom of the inner tank wall 15, are connected end to end in sequence through the electrode plate circuit 3, and form an electrolysis air floatation area at one side in the tank for electrolyzing industrial wastewater to generate H 2 And O 2 And (5) air bubbles. Because the generated bubbles have stronger adsorption capacity and larger specific surface area, suspended matters, oils and other substances in the water can be separated by air floatation, so that the suspended matters, the oils and other substances float to the water surface to become scum and oil float which are easier to remove, and part of heavy metal ions and soluble organic matters are directly electrolyzed, oxidized and reduced at the same time, extractedThe biodegradability of the wastewater is high, and the treatment load of a subsequent biochemical reaction unit is reduced;
the overflow port 4 is arranged at the other end of the outer tank wall 14 and is used for coping with overflow discharge of redundant industrial wastewater when the wastewater treatment amount is too large;
the administration tube 5 passes through the outer tank wall 14 and is close to the ozone distribution pipeline 6 for H 2 O 2 Adding the medicament to make it and O 3 OH with no selectivity and strong oxidability is generated by the reaction, so that the removal of refractory organic matters in industrial wastewater is realized;
the ozone distribution pipeline 6 passes through the outer tank wall 14 and is continuously arranged along the center of the bottom of an aisle in the tank, an aeration port 7 is arranged on the pipeline, and an ozone aeration area is formed at the other side in the tank and is used for aerating industrial wastewater to realize decolorization, deodorization, sterilization and disinfection and direct degradation of part of organic matters and H 2 O 2 The reaction produces OH. CO produced by degrading organic matter 2 And O produced by ozonolysis 2 The suspended matters in the wastewater can be adsorbed and float up to the surface of the wastewater, and finally the suspended matters are removed by a slag remover 11, so that the SS content of the wastewater is reduced;
the first fan 9a is arranged on the first gas collecting pipe 8a, the second fan 9b is arranged on the second gas collecting pipe 8b, and the first fan 9a and the second fan are used for recovering gas resources generated in the pretreatment pool and used for subsequent wastewater treatment, and meanwhile, the influence on the environment is reduced;
the slag remover 11 is arranged above the center of the pretreatment tank, is close to the surface of the wastewater, is used for removing scum on the surface of the wastewater, and is discharged through the slag discharge port 10;
the first ventilation pedal 12a and the second ventilation pedal 12b are arranged at the top of the pretreatment tank and are used for ventilating the tank and manually inspecting the treatment condition of wastewater in the tank;
the water outlet 13 is arranged at the bottom of the center of the pretreatment tank, industrial wastewater flows along the passageway in the tank, and flows out from the water outlet 13 after being subjected to 'electrolysis air flotation-ozone advanced oxidation-electrolysis air flotation-ozone advanced oxidation' alternate pretreatment;
further, the reaction principle of the electrolytic wastewater of the electrode plate 2 is shown in reaction formulas 1.1 and 1.2:
further, when the excessive industrial wastewater overflows through the overflow port 4, the excessive industrial wastewater can directly flow into the biochemical treatment unit;
further, the reaction principle of the ozone aeration zone for removing the refractory organic matters is shown in reaction formulas 2.1 and 2.2:
further, the gas collected by the gas collecting pipe and the fan is mainly H 2 、O 2 、CO 2 And O 3 (unstable conversion to O) 2 ）；
Compared with the traditional industrial wastewater pretreatment facility, the utility model has the following advantages:
(1) Electric floatation and advanced oxidation of ozone/hydrogen peroxide cooperate to purify. The electrolytic industrial wastewater can directly oxidize and reduce part of soluble organic matters and heavy metal ions in the water, and can also generate H 2 And O 2 The suspended matters and the oil substances in the water are separated by the air bubble air flotation, and are removed from the water by matching with a slag remover, so that the SS content and the COD content are reduced. At the same time, ozone is introduced to sterilize, disinfect, decolor and deodorize, and the ozone can also be added with added H 2 O 2 And the reaction is generated, refractory organic matters and toxic substances in the water are removed, the biodegradability of the wastewater is improved, and the COD content is reduced.
(2) And (3) recycling gas resources. H produced in wastewater treatment 2 、O 2 、CO 2 And O 3 (unstable conversion to O) 2 ) Can be recycled to subsequent lifeThe chemical treatment unit is used for increasing the utilization rate of gas resources and reducing the influence on the environment.
Drawings
FIG. 1 is a top view of the exterior of an industrial wastewater pretreatment tank.
FIG. 2 is a top view of the interior of an industrial wastewater pretreatment tank.
FIG. 3 is a block diagram A of a planing surface of an industrial wastewater pretreatment tank.
FIG. 4 is a block diagram B of a planing surface of an industrial wastewater pretreatment tank.
FIG. 5 is a flow chart of industrial wastewater treatment.
In the figure: 1 water inlet, 2 electrode plates, 3 electrode plate lines, 4 overflow ports, 5 administration pipes, 6 ozone distribution lines, 7 aeration ports, 8a first gas collecting pipes, 8b second gas collecting pipes, 9a first fans, 9b second fans, 10 slag discharging ports, 11 slag removers, 12a first ventilation pedals, 12b second ventilation pedals, 13 water outlets, 14 outer pool walls and 15 inner pool walls.
Detailed Description
The figure shows an internal top view of the industrial wastewater pretreatment tank, and the figure shows that the industrial wastewater pretreatment tank mainly comprises an electrolytic air floatation area and an ozone aeration area.
The electrolytic air floatation area comprises an electrode plate 2 and an electrode plate line 3.
The ozone aeration area comprises a dosing pipe 5, an ozone distribution management 6 and an aeration port 7.
Industrial wastewater is firstly intercepted by a grating, deposited in a grit chamber and then flows into a pretreatment chamber through a water inlet 1. The wastewater is electrolyzed on a cathode plate and an anode plate of the electrode plate 2 to separate out H with stronger adsorption capacity and larger specific surface area 2 And O 2 The air bubbles, the air flotation separates suspended matters and oil substances in the water to form scum and oil, the scum and the oil substances are removed by matching with a slag remover 11, and meanwhile, part of heavy metal ions and soluble organic matters are directly electrolyzed, oxidized and reduced, so that the biodegradability of the wastewater is improved, and the treatment load of a subsequent biochemical reaction unit is reduced.
The wastewater then continues along the aisle into the ozone aeration zone. O (O) 3 Distribution of ozone through the outer cell wall 14Pipeline 6 is used for conveying, mixing with wastewater in the tank through an aeration port 7, oxidizing and degrading partial organic matters in the water, and sterilizing, disinfecting, decoloring and deodorizing. At the same time H 2 O 2 Is added into an ozone aeration zone through a dosing pipe 5 to be mixed with O in water 3 The reaction is catalyzed to generate OH with strong oxidizing property and no selectivity, and most of organic matters (including refractory organic matters) are oxidized into CO 2 And other salt substances, and does not produce secondary pollution, thereby further reducing the COD content of the wastewater. CO formed during the treatment by degradation of organics and ozonolysis, respectively 2 And O 2 Can absorb suspended matters and oil substances in the floating wastewater to the water surface to form scum and floating oil, and finally is removed by the slag remover 11.
And then the wastewater flows into the electrolytic air floatation area again along the tank wall, and the steps are repeated. Industrial wastewater circularly flows back and forth in the electrolysis air flotation area and the ozone aeration area to perform alternating pretreatment of electric flotation-ozone advanced oxidation-electric flotation-ozone advanced oxidation, thereby effectively reducing the SS content and COD content of the wastewater and improving the biodegradability of the wastewater.
An operator can observe the wastewater treatment condition in the pond through the first ventilation pedal 12a and the first ventilation pedal 12 b.
Most of the gas resources generated in the pretreatment process can be recovered through the first gas collecting pipe 8a and the second gas collecting pipe 8b under the working of the first fan 9a and the second fan 9b, so that the influence on the environment is reduced while the secondary utilization of the gas resources is realized.
Finally, the treated industrial wastewater is discharged from a water outlet 13 arranged at the center bottom of the pretreatment tank and flows into a subsequent treatment unit. If the water quantity of the treated industrial wastewater is too large, the redundant industrial wastewater can directly overflow through the overflow port 4 and directly flow into a subsequent treatment unit.
Claims (10)
1. The industrial wastewater pretreatment tank is characterized by comprising an electrolytic air flotation area, an ozone aeration area, a water inlet (1), an electrode plate (2), an electrode plate circuit (3), an overflow port (4), a dosing pipe (5), an ozone distribution pipeline (6), an aeration port (7), a gas collecting pipe, a fan, a slag discharge port (10), a slag remover (11), a ventilation pedal, a water outlet (13), an outer tank wall (14) and an inner tank wall (15);
the gas collecting tube comprises a first gas collecting tube (8 a) and a second gas collecting tube (8 b); the fans comprise a first fan (9 a) and a second fan (9 b); the ventilation pedal comprises a first ventilation pedal (12 a) and a second ventilation pedal (12 b).
2. An industrial wastewater pretreatment tank according to claim 1, wherein: the water inlet (1) is arranged at one end of the outer pool wall (14).
3. An industrial wastewater pretreatment tank according to claim 1, wherein: the electrode plates (2) are arranged one by one along the center of the bottom of the channel in the tank, are connected end to end in sequence through electrode plate lines (3), and form an electrolytic air floatation area at one side of the tank.
4. An industrial wastewater pretreatment tank according to claim 1, wherein: the overflow port (4) is arranged at the other end of the outer pool wall (14).
5. An industrial wastewater pretreatment tank according to claim 1, wherein: the administration tube (5) passes through the outer tank wall (14) and is close to the ozone distribution pipeline (6).
6. An industrial wastewater pretreatment tank according to claim 1, wherein: the ozone distribution pipeline (6) passes through the outer tank wall (14) and is continuously arranged along the center of the bottom of the passageway in the tank, the pipeline is provided with an aeration port (7), and an ozone aeration area is formed at the other side in the tank.
7. An industrial wastewater pretreatment tank according to claim 1, wherein: the first fan (9 a) is arranged on the first gas collecting tube (8 a), and the second fan (9 b) is arranged on the second gas collecting tube (8 b).
8. An industrial wastewater pretreatment tank according to claim 1, wherein: the slag discharging port (10) is arranged above the pretreatment tank, one end of the slag remover (11) penetrates through the slag discharging port (10), and the other end of the slag remover is close to the surface of the wastewater.
9. An industrial wastewater pretreatment tank according to claim 1, wherein: the first ventilation pedal (12 a) and the second ventilation pedal (12 b) are arranged at the top of the pretreatment tank.
10. An industrial wastewater pretreatment tank according to claim 1, wherein: the water outlet (13) is arranged at the bottom of the center of the pretreatment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321599320.4U CN220412992U (en) | 2023-06-21 | 2023-06-21 | Industrial wastewater pretreatment tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321599320.4U CN220412992U (en) | 2023-06-21 | 2023-06-21 | Industrial wastewater pretreatment tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220412992U true CN220412992U (en) | 2024-01-30 |
Family
ID=89652822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321599320.4U Active CN220412992U (en) | 2023-06-21 | 2023-06-21 | Industrial wastewater pretreatment tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220412992U (en) |
-
2023
- 2023-06-21 CN CN202321599320.4U patent/CN220412992U/en active Active
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