CN214611740U - High-efficiency aeration biochemical system based on DO and NO3N monitoring - Google Patents
High-efficiency aeration biochemical system based on DO and NO3N monitoring Download PDFInfo
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- CN214611740U CN214611740U CN202021636020.5U CN202021636020U CN214611740U CN 214611740 U CN214611740 U CN 214611740U CN 202021636020 U CN202021636020 U CN 202021636020U CN 214611740 U CN214611740 U CN 214611740U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 14
- 238000005273 aeration Methods 0.000 title claims abstract description 13
- 238000005276 aerator Methods 0.000 claims abstract description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000725 suspension Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 9
- 239000010865 sewage Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 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 2
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001706 oxygenating effect Effects 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model relates to a high-efficient aeration biochemical system based on DO and NO3N monitoring, include: the device comprises an air blower, a microporous aerator, a PLC automatic control device, a DO tester, a regulating valve, a carbon source feeding pump and an NO3N tester, wherein the microporous aerator is arranged at the bottom of an aerobic tank and the bottom of a facultative tank and is connected with an air outlet of the air blower through a gas conveying pipeline; a DO tester is arranged at the water outlet of the aerobic tank; arranging a DO tester in the facultative tank; regulating valves are arranged on the branch pipes of the gas conveying pipeline between the aerobic tank and the facultative tank. An NO3N tester is arranged at the water inlet position of the aerobic tank, the NO3N tester is electrically connected with a PLC automatic control device, and the PLC automatic control device is electrically connected with a carbon source feeding pump. The utility model discloses can throw the rotational speed and the water yield of adding the pump according to the amount of wind, the automatic control carbon source of the variable intelligent regulation air-blower of DO number value, degree of automation is high, energy-conserving effectual, data accuracy is high.
Description
Technical Field
The utility model relates to a high-efficient aeration biochemical system based on DO and NO3N monitoring belongs to sewage treatment technical field.
Background
In the sewage treatment process, the aerobic tank is the most important link in the biochemical treatment process, continuous aeration is needed, and the DO (dissolved oxygen) value in the aerobic tank is usually controlled to be 0.5-5.0mg/L and the DO value in the facultative tank is controlled to be 0.2-0.5 mg/L. If the DO value is too low, the oxidation of organic matters is incomplete, and the treatment effect is poor; if the DO value is too high, energy consumption is wasted and the aging of the activated sludge is accelerated.
Meanwhile, the aerobic tank needs to keep a proper nitrogen-phosphorus ratio, and the numerical value of NO3N (nitrate nitrogen) in the aerobic tank is usually controlled to be 30-50 mg/L. If the NO3N value is too low, the nitrogen-phosphorus ratio in water is too low, and the treatment effect is poor; if the NO3N value is too high, energy consumption is wasted and activated sludge aging is also accelerated.
At present, the quality and quantity of inlet water of a plurality of sewage treatment plants fluctuate greatly in different time periods, the working condition of the air blower is single, the accurate control of the sewage biochemical treatment cannot be realized, and DO (DO) values and NO3N values DO not reach the standard or energy is wasted.
Disclosure of Invention
Aiming at the existing technical defects in the biochemical stage of the sewage treatment plant, the utility model provides a high-efficiency aeration biochemical system based on DO and NO3N monitoring. By collecting and monitoring DO values of sewage in the aerobic tank and the facultative tank, the output air quantity of an air blower and the opening of a regulating valve are intelligently regulated by using a self-control system (PLC); meanwhile, the NO3N value of the sewage in the aerobic tank is collected and monitored, and the opening degree of the output water quantity of the carbon source feeding pump is intelligently adjusted by using a self-control system (PLC), so that the optimal biochemical effect of each biochemical section is achieved, and reasonable gas supply, energy conservation and consumption reduction are ensured. The utility model discloses a realize through following technical scheme:
a high efficiency aeration biochemical system based on DO and NO3N monitoring, comprising: the system comprises an air blower, a first microporous aerator, a second microporous aerator, a PLC automatic control device, a first DO tester, a second DO tester, a first regulating valve, a second regulating valve, a carbon source feeding pump and an NO3N tester, wherein the first microporous aerator is arranged at the bottom of an aerobic tank and is connected with an air outlet of the air blower through the first regulating valve by a gas conveying pipeline, and the second microporous aerator is arranged at the bottom of the facultative tank and is connected with the air outlet of the air blower through the second regulating valve by the gas conveying pipeline; arranging a first DO tester at the water outlet of the aerobic tank, and arranging a second DO tester in the facultative tank; a carbon source adding pipeline is arranged at the inlet of the facultative tank and is communicated with a carbon source adding tank through a carbon source adding pump; and an NO3N tester is arranged in the aerobic tank, and the first DO tester, the second DO tester, the air blower, the first regulating valve, the second regulating valve, the carbon source feeding pump and the NO3N tester are electrically connected with the PLC automatic control device.
The PLC automatic control device automatically controls the rotating speed and the air quantity of the air blower and the opening of the regulating valve according to the change of the DO value collected by the DO tester, so that the working condition of the air blower is not single any more, and the aims of optimizing the biochemical effect of the aerobic biochemical section and saving energy are fulfilled. The PLC automatic control device automatically controls the rotating speed of the carbon source feeding pump and the opening of the output water volume according to the change of the NO3N value collected by the NO3N tester, so that the working condition of the carbon source feeding pump is not single any more, and the purposes of optimizing the biochemical effect of the aerobic biochemical section and saving energy are achieved.
When the monitored value of NO3N of the aerobic tank is lower than the preset low value in the PLC automatic control system, increasing the dosing amount of the carbon source dosing pump; and when the monitored value of the NO3N of the aerobic tank is higher than the preset high value in the PLC automatic control system, reducing the dosage of the carbon source feeding pump.
Preferably, the first microporous aerator and the second microporous aerator are suspension chain type microporous aerators, or lifting type microporous aerators, or fixed type microporous aerators, so that the oxygenation efficiency of the aerators is improved.
Preferably, the air blower is a magnetic suspension air blower or an air suspension air blower, so that the energy-saving efficiency is improved.
Preferably, the signals transmitted to the PLC automatic control device by the first DO tester, the second DO tester and the NO3N tester are current signals, the rotating speed of the air blower and the opening degree of the regulating valve are automatically controlled by the current signals, and the rotating speed of the carbon source dosing pump is automatically controlled by the current signals.
Compared with the prior art, the beneficial effects of the utility model are that:
the high-efficiency intelligent aeration system can intelligently adjust the air volume of the air blower and the opening of the adjusting valve according to the change of the DO value, and can also intelligently adjust the water volume of the carbon source feeding pump according to the change of the NO3N value, so that the system has the advantages of high automation degree, good energy-saving effect and high data precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are illustrative of some embodiments of the invention, and that those skilled in the art will be able to derive other drawings without inventive step from these drawings, which are within the scope of the present application.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure, 1-an air blower, 2-a first microporous aerator, 3-a PLC automatic control device, 4-a first DO tester, 5-a second DO tester, 6-a first regulating valve, 7-a second regulating valve, 8-an aerobic tank, 9-a facultative tank, 10-a gas conveying pipeline, 11-a second microporous aerator, 12-NO3N tester, 13-a carbon source feeding pump, 14-a carbon source feeding pipeline and 15-a carbon source feeding tank.
Detailed Description
The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:
as shown in fig. 1, is a schematic structural diagram of an embodiment of the present invention. A high efficiency aeration biochemical system based on DO and NO3N monitoring, comprising: the aerobic tank 8, the bottom of the aerobic tank 8 is provided with a first microporous aerator 2, which is used for oxygenating the aerobic tank 8 to ensure the dissolved oxygen; the facultative tank 9 is provided with a second microporous aerator 11 at the bottom of the facultative tank 9, and is used for oxygenating the aerobic tank 9 to ensure the dissolved oxygen. The micropore aerator can adopt a suspension chain type micropore aerator, a lifting type micropore aerator or a fixed type micropore aerator. Compared with the traditional process, the operation cost of the suspension chain type microporous aerator or the lifting type microporous aerator or the fixed type microporous aerator is saved by about 35 to 45 percent, the treatment effect is good, the effluent quality is stable, the aerobic tank does not need to be drained during maintenance and repair, and the first microporous aerator 2 and the second microporous aerator 11 can be taken out from the aerobic tank 8 and the facultative tank 9 on the water surface.
The first microporous aerator 2 is connected with the air outlet of the air blower 1 through a first adjusting valve 6 and a gas conveying pipeline 10, and the second microporous aerator 11 is connected with the air outlet of the air blower 1 through a second adjusting valve 7 and the gas conveying pipeline 10. The air blower 1 can adopt a magnetic suspension air blower or an air suspension air blower. The blower 1 is used for providing an air source, and the air is sent to the first microporous aerator 2 and the second microporous aerator 11 through the air conveying pipeline 10 to improve the oxygen content of the sewage in the aerobic tank 8 and the facultative tank 9. The magnetic suspension air blower or the air suspension air blower is an efficient, energy-saving and environment-friendly product, has the characteristics of no contact wear, no lubrication, no oil pollution and no maintenance, and is a substitute of the traditional air blower. Compared with the traditional fan, the magnetic suspension fan saves energy by 15-25%.
And a first DO tester 4 is arranged at the water outlet of the aerobic tank 8 and is used for detecting the oxygen content (namely DO value) of the water outlet of the aerobic tank 8. A second DO tester 5 is arranged in the facultative tank 9 and is used for detecting the oxygen content (namely the DO value) of the effluent of the facultative tank 9.
The first DO tester 4 and the second DO tester 5 are electrically connected with the PLC automatic control device 3, and the first DO tester 4 and the second DO tester 5 convert collected monitoring data into current signals and transmit the current signals to the PLC automatic control device 3.
The PLC automatic control device 3 is electrically connected with the air blower 1, the first regulating valve 6 and the second regulating valve 7, the PLC automatic control device 3 automatically controls the operating frequency of the air blower 1 and the opening degrees of the first regulating valve 6 and the second regulating valve 7 according to current signals transmitted by the first DO tester 4 and the second DO tester 5, so that the oxygenation efficiency of the first microporous aerator 2 and the second microporous aerator 11 is controlled, and the DO values in the aerobic tank 8 and the facultative tank 9 are finally controlled in an ideal state, so that the aerobic biochemical section achieves the optimal biochemical effect.
And a carbon source adding pipeline 14 is arranged at the inlet of the facultative tank 9 and used for injecting a carbon source into the facultative tank 9 so as to ensure that the nitrogen-phosphorus ratio is in a proper range. The carbon source feeding pipeline 14 is communicated with a carbon source dosing tank 15 through a carbon source feeding pump 13, and the carbon source feeding pump 13 is electrically connected with the PLC automatic control device 3. A NO3N tester 12 is arranged in the aerobic tank 8 and is used for detecting the nitrate nitrogen content (namely, the NO3N value) of the aerobic tank 8.
The NO3N tester 12 is electrically connected with the PLC automatic control device 3, and the NO3N tester 12 converts the collected monitoring data into current signals and transmits the current signals to the PLC automatic control device 3.
The PLC automatic control device 3 is electrically connected with the carbon source feeding pump 13, the PLC automatic control device 3 automatically controls the running frequency of the carbon source feeding pump 13 according to a current signal transmitted by the NO3N tester 12, the drug output of the carbon source feeding pump 13 is controlled, and finally the NO3N value in the aerobic tank 8 is controlled in an ideal state, so that the optimal biochemical effect of the aerobic biochemical section is achieved.
Other parts in this embodiment are the prior art, and are not described herein again.
Finally, it is to be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (4)
1. High efficiency aeration biochemical system based on DO and NO3N monitoring, characterized by comprising: the device comprises an air blower (1), a first microporous aerator (2), a PLC (programmable logic controller) automatic control device (3), a first DO tester (4), a second DO tester (5), a first regulating valve (6), a second regulating valve (7), a second microporous aerator (11), a carbon source feeding pump (13) and an NO3N tester (12), wherein the first microporous aerator (2) is arranged at the bottom of an aerobic tank (8) and is connected with an air outlet of the air blower (1) through the first regulating valve (6) through a gas conveying pipeline (10), and the second microporous aerator (11) is arranged at the bottom of a facultative tank (9) and is connected with an air outlet of the air blower (1) through the second regulating valve (7) through the gas conveying pipeline (10); a first DO tester (4) is arranged at the water outlet of the aerobic tank (8), and a second DO tester (5) is arranged in the facultative tank (9);
a carbon source adding pipeline (14) is arranged at the inlet of the facultative tank (9), and the carbon source adding pipeline (14) is communicated with a carbon source dosing tank (15) through a carbon source adding pump (13); an NO3N tester (12) is arranged in the aerobic pool (8), and the first DO tester (4), the second DO tester (5), the air blower (1), the first regulating valve (6), the second regulating valve (7), the carbon source feeding pump (13) and the NO3N tester (12) are electrically connected with the PLC automatic control device (3).
2. The DO and NO3N monitoring based high efficiency aeration biochemical system according to claim 1, wherein the first microporous aerator (2), the second microporous aerator (11) is a suspended chain type microporous aerator or a liftable microporous aerator or a fixed microporous aerator.
3. The high efficiency aeration biochemical system based on DO and NO3N monitoring of claim 2, wherein the air blower (1) is a magnetic suspension air blower or an air suspension air blower.
4. The biochemical high-efficiency aeration system based on DO and NO3N monitoring as claimed in claim 3, wherein the signals transmitted by the first DO tester (4), the second DO tester (5) and the NO3N tester (12) to the PLC automatic control device (3) are current signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021636020.5U CN214611740U (en) | 2020-08-07 | 2020-08-07 | High-efficiency aeration biochemical system based on DO and NO3N monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021636020.5U CN214611740U (en) | 2020-08-07 | 2020-08-07 | High-efficiency aeration biochemical system based on DO and NO3N monitoring |
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| Publication Number | Publication Date |
|---|---|
| CN214611740U true CN214611740U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021636020.5U Active CN214611740U (en) | 2020-08-07 | 2020-08-07 | High-efficiency aeration biochemical system based on DO and NO3N monitoring |
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| CN (1) | CN214611740U (en) |
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- 2020-08-07 CN CN202021636020.5U patent/CN214611740U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240401 Address after: No.2269 Kaifa Road, high tech Zone, Jinan City, Shandong Province Patentee after: Shandong Hongyuan Environmental Protection Technology Co.,Ltd. Country or region after: China Address before: No.2269 Kaifa Road, high tech Zone, Jinan City, Shandong Province Patentee before: SHANDONG SWAN WATER ENGINEERING Co.,Ltd. Country or region before: China Patentee before: Shandong Hongyuan Environmental Protection Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |