CN219730712U - Advanced treatment system for industrial park wastewater - Google Patents
Advanced treatment system for industrial park wastewater Download PDFInfo
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- CN219730712U CN219730712U CN202320631156.4U CN202320631156U CN219730712U CN 219730712 U CN219730712 U CN 219730712U CN 202320631156 U CN202320631156 U CN 202320631156U CN 219730712 U CN219730712 U CN 219730712U
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- tank
- floatation
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- ozone
- air
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- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 79
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000010517 secondary reaction Methods 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 230000003197 catalytic effect Effects 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses an advanced treatment system for industrial park wastewater, which comprises an ozone floatation device and an autotrophic-heterotrophic combined denitrification filter which are sequentially connected, wherein the ozone floatation device comprises an ozone generator, a secondary reaction floatation tank and a primary reaction tank, the primary reaction tank comprises a water inlet, a water outlet and an air inlet, the secondary reaction floatation tank comprises a water inlet, a water outlet, a return port and an air outlet, ozone generated by the ozone generator enters the primary reaction tank through the air inlet, a jet device is further arranged on a communicating pipe between the water outlet of the primary reaction tank and the water inlet of the secondary reaction floatation tank, water discharged from the primary reaction tank enters the secondary reaction floatation tank after being mixed with wastewater, and ozone catalytic oxidation filler is filled in the primary reaction tank; the return port of the secondary reaction air floatation tank is connected with the water inlet of the primary reaction tank, the air outlet of the secondary reaction air floatation tank is connected with the ozone generator, and the oxygen after air floatation is sent into the ozone generator.
Description
Technical Field
The utility model relates to an advanced treatment system for industrial park wastewater.
Background
Industrial park wastewater is a special municipal wastewater, and the treatment process mostly adopts traditional pretreatment (chemical coagulation) +biological treatment. The traditional treatment system is mature and stable, but can only meet the existing emission standard (such as first-class A), and is difficult to meet the stricter emission standard (three-class and four-class water on the ground). Currently, most electronic industrial park sewage treatment plants are also facing increasingly higher emission standards pressures as municipal sewage treatment plants.
The important and difficult point of advanced wastewater treatment in industrial parks is the advanced removal of carbon and nitrogen pollutants. The existing advanced wastewater treatment system for the industrial park is mainly an air floatation/precipitation, advanced oxidation and denitrification combined system, and is used for removing dissolved organic matters through oxidation after removing a small amount of suspended matters in wastewater, and finally converting nitrate nitrogen into nitrogen through denitrification reaction to realize advanced denitrification. However, the system has the problems of large liquid oxygen raw material addition amount and easy ozone leakage in the air floatation/precipitation and advanced oxidation process.
Disclosure of Invention
The utility model aims to: the utility model aims to provide an advanced treatment system for industrial park wastewater, which has small liquid oxygen raw material addition amount in the whole equipment operation process, so that the equipment operation cost is low, and meanwhile, the problem of ozone leakage can not occur.
The technical scheme is as follows: the advanced treatment system of industrial park wastewater comprises an ozone floatation device and an autotrophic-heterotrophic combined denitrification filter which are connected in sequence, wherein effluent of the ozone floatation device enters the autotrophic-heterotrophic combined denitrification filter through a lifting pump; the ozone floatation device comprises an ozone generator, a secondary reaction floatation tank and a primary reaction tank, wherein the primary reaction tank comprises a water inlet, a water outlet and an air inlet, the secondary reaction floatation tank comprises a water inlet, a water outlet, a reflux port and an air outlet, ozone generated by the ozone generator enters the primary reaction tank through the air inlet, the water outlet of the primary reaction tank is communicated with the water inlet of the secondary reaction floatation tank, a jet device is further arranged on a communicating pipe between the water outlet of the primary reaction tank and the water inlet of the secondary reaction floatation tank, water discharged from the primary reaction tank enters the secondary reaction floatation tank after being mixed with wastewater, and ozone catalytic oxidation filler is filled in the primary reaction tank; the air outlet of the secondary reaction air floatation tank is connected with the ozone generator, oxygen is sent into the ozone generator after air floatation, the air outlet is positioned at the top of the secondary reaction air floatation tank, and the air outlet of the secondary reaction air floatation tank is connected with the ozone generator through a pipeline.
The autotrophic-heterotrophic combined denitrification filter comprises a water distribution area, a reaction area and a bearing area in sequence along the longitudinal direction, wherein the reaction area is filled with denitrification filler, and the filling amount of the denitrification filler is not less than 100% of the volume of the reaction area; the water outlet of the secondary reaction air floatation tank is connected with the water distribution area of the autotrophic-heterotrophic combined denitrification filter, and the outlet water of the secondary reaction air floatation tank is pumped into the water distribution area of the autotrophic-heterotrophic combined denitrification filter through a lifting pump.
The ozone floatation device also comprises a diaphragm compressor, and the gas output by the ozone generator is sent into the first-stage reaction tank through the diaphragm compressor.
The gas inlet of the primary reaction tank is positioned below the tank body, and gas enters a reaction zone filled with ozone catalytic oxidation filler through a gas distributor; the water inlet of the primary reaction tank is also positioned below the tank body.
Wherein, the filling amount of the ozone catalytic oxidation filling material is 60-80 percent of the volume of the reaction zone of the first-stage reaction tank, and more preferably 65-75 percent.
The beneficial effects are that: compared with the prior art, the utility model has the following effects: according to the utility model, the ozone floatation device is combined to operate, on one hand, the first-stage reaction tank is a closed tank body, so that ozone leakage is effectively prevented, meanwhile, little ozone enters the second-stage reaction floatation tank, and the ozone can be rapidly decomposed in the second-stage reaction floatation tank, so that the problem of ozone leakage cannot exist in the whole operation process of the equipment; on the other hand, the secondary reaction air floatation tank utilizes bubbles generated by oxygen (containing a small amount of ozone) carried in the water discharged from the primary reaction tank to carry out air floatation treatment, and the exhaust port of the secondary reaction air floatation tank is connected with the ozone generator, the air-floated oxygen is sent into the ozone generator, and the oxygen returns to the front end of the ozone generator and is continuously used as a raw material for generating ozone, so that the addition amount of liquid oxygen raw materials is reduced, and the running cost of equipment is reduced.
Drawings
FIG. 1 is a schematic system diagram of a processing system of the present utility model;
FIG. 2 is a schematic structural view of an ozone floatation device;
FIG. 3 is a schematic structural diagram of autotrophic-heterotrophic combined denitrification.
Detailed Description
As shown in fig. 1 to 3, the advanced treatment system of industrial park wastewater comprises an ozone air flotation device 1 and an autotrophic-heterotrophic combined denitrification filter 2 which are connected in sequence, wherein effluent water of the ozone air flotation device 1 enters the autotrophic-heterotrophic combined denitrification filter 2 through a lifting pump 3; the ozone floatation device 1 comprises an ozone generator, a diaphragm compressor, a first-stage reaction tank and a second-stage reaction floatation tank, wherein the first-stage reaction tank comprises a water inlet, a water outlet and an air inlet, the second-stage reaction floatation tank comprises a water inlet, a water outlet, a return port and an air outlet, gas output by the ozone generator is sent into the first-stage reaction tank from the air inlet through the diaphragm compressor, the water outlet of the first-stage reaction tank is communicated with the water inlet of the second-stage reaction floatation tank, a jet device is further arranged on a communicating pipeline between the water outlet of the first-stage reaction tank and the water inlet of the second-stage reaction floatation tank, water outlet of the first-stage reaction tank enters the second-stage reaction floatation tank after being mixed with wastewater by the jet device, and ozone catalytic oxidation filler is filled in the first-stage reaction tank; the return port of the secondary reaction air floatation tank is connected with the water inlet of the primary reaction tank, the exhaust port of the secondary reaction air floatation tank is connected with the ozone generator, the exhaust port is positioned at the top of the secondary reaction air floatation tank, and the exhaust port of the secondary reaction air floatation tank is connected with the ozone generator through a pipeline. The oxygen after air floatation returns to the front end of the ozone generator and is continuously used as a raw material for generating ozone, so that the addition amount of liquid oxygen raw material is reduced, and the running cost of equipment is reduced.
The autotrophic-heterotrophic combined denitrification filter comprises a water distribution area, a reaction area and a bearing area in sequence along the longitudinal direction, wherein the reaction area is filled with denitrification filler, and the filling amount of the denitrification filler is 100% of the volume of the reaction area; the water outlet of the secondary reaction air floatation tank is connected with the water distribution area of the autotrophic-heterotrophic combined denitrification filter, and the water outlet of the secondary reaction air floatation tank is pumped into the water distribution area of the autotrophic-heterotrophic combined denitrification filter through a lifting pump. The wastewater treated by the ozone floatation device enters an autotrophic-heterotrophic combined denitrification filter, and at the moment, organic matters can be utilized by microorganisms to serve as an electron donor for heterotrophic denitrification, so that no additional carbon source is needed, secondary pollution is avoided, and S, fe in denitrification filler serves as the electron donor for autotrophic denitrification.
The air inlet of the first-stage reaction tank is positioned below the tank body, gas enters a reaction zone filled with ozone catalytic oxidation filler through a gas distributor, and the filling amount of the ozone catalytic oxidation filler is 60% -80% of the volume of the reaction zone of the first-stage reaction tank; the water inlet of the first-stage reaction tank is also positioned below the tank body.
Mixing the wastewater after the secondary biological treatment with the effluent of the primary reaction tank, then sending the mixture into a secondary reaction air floatation tank, performing air floatation treatment by using gas carried in the effluent of the primary reaction tank to form bubbles, enabling the gas in the secondary reaction air floatation tank to enter an ozone generator after the air floatation treatment, enabling part of the effluent of the secondary reaction air floatation tank to flow back to the primary reaction tank, and enabling the other part of the effluent of the secondary reaction air floatation tank to enter an autotrophic-heterotrophic combined denitrification filter; the ozone generator sends ozone-containing gas into a first-stage reaction tank, ozone catalytic oxidation filler is filled in the first-stage reaction tank, the wastewater undergoes ozone catalytic oxidation reaction in the first-stage reaction tank, the hydraulic retention time in the first-stage reaction tank is 20-30 min, the gas inlet amount of the ozone generator into the first-stage reaction tank is 1.5-3L/min, and the ozone concentration in the gas is 35-42 mg/L; in the first-stage reaction tank, the mass ratio of the ozone to COD in the wastewater is 0.9-1.5; the autotrophic-heterotrophic combined denitrification filter is filled with denitrification filler, wastewater undergoes autotrophic-heterotrophic combined denitrification reaction in the filter, and effluent after the reaction reaches the standard is discharged; effluent NH of autotrophic-heterotrophic combined denitrification filter 3 N, SS is not detected, the COD stability of the effluent is less than 20mg/L, the TN stability of the effluent is less than 1mg/L, and the quality of the effluent meets the surface three water quality standards.
Claims (7)
1. An advanced treatment system for industrial park wastewater, which is characterized in that: comprises an ozone floatation device and an autotrophic-heterotrophic combined denitrification filter which are connected in sequence; the ozone floatation device comprises an ozone generator, a secondary reaction floatation tank and a primary reaction tank, wherein the primary reaction tank comprises a water inlet, a water outlet and an air inlet, the secondary reaction floatation tank comprises a water inlet, a water outlet, a reflux port and an air outlet, ozone generated by the ozone generator enters the primary reaction tank through the air inlet, the water outlet of the primary reaction tank is communicated with the water inlet of the secondary reaction floatation tank, a jet device is further arranged on a communicating pipe between the water outlet of the primary reaction tank and the water inlet of the secondary reaction floatation tank, water discharged from the primary reaction tank enters the secondary reaction floatation tank after being mixed with wastewater, and ozone catalytic oxidation filler is filled in the primary reaction tank; the reflux port of the secondary reaction air floatation tank is connected with the water inlet of the primary reaction tank, the air outlet of the secondary reaction air floatation tank is connected with the ozone generator, and the oxygen after air floatation is sent into the ozone generator.
2. The advanced treatment system for industrial park wastewater according to claim 1, wherein: the autotrophic-heterotrophic combined denitrification filter comprises a water distribution area, a reaction area and a bearing area in sequence along the longitudinal direction, wherein the reaction area is filled with denitrification filler; and the water outlet of the secondary reaction air floatation tank is connected with the water distribution area of the autotrophic-heterotrophic combined denitrification filter.
3. The advanced treatment system for industrial park wastewater according to claim 2, wherein: the filling amount of the denitrification filler is not less than 100% of the volume of the reaction zone.
4. The advanced treatment system for industrial park wastewater according to claim 1, wherein: the ozone floatation device also comprises a diaphragm compressor, and the gas output by the ozone generator is sent into the first-stage reaction tank through the diaphragm compressor.
5. The advanced treatment system for industrial park wastewater as claimed in claim 4, wherein: an air inlet of the primary reaction tank is positioned below the tank body, and gas enters a reaction zone filled with ozone catalytic oxidation filler through a gas distributor; the water inlet of the primary reaction tank is also positioned below the tank body.
6. The advanced treatment system for industrial park wastewater as claimed in claim 5, wherein: the filling amount of the ozone catalytic oxidation filling material is 60% -80% of the volume of the reaction zone of the first-stage reaction tank.
7. The advanced treatment system for industrial park wastewater as claimed in claim 6, wherein: the filling amount of the ozone catalytic oxidation filling material is 65-75% of the volume of the reaction zone of the first-stage reaction tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320631156.4U CN219730712U (en) | 2023-03-28 | 2023-03-28 | Advanced treatment system for industrial park wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320631156.4U CN219730712U (en) | 2023-03-28 | 2023-03-28 | Advanced treatment system for industrial park wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219730712U true CN219730712U (en) | 2023-09-22 |
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ID=88057506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320631156.4U Active CN219730712U (en) | 2023-03-28 | 2023-03-28 | Advanced treatment system for industrial park wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219730712U (en) |
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2023
- 2023-03-28 CN CN202320631156.4U patent/CN219730712U/en active Active
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