CN214734813U - High-efficiency aeration biochemical system based on DO and ORP monitoring - Google Patents
High-efficiency aeration biochemical system based on DO and ORP monitoring Download PDFInfo
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- CN214734813U CN214734813U CN202021635979.7U CN202021635979U CN214734813U CN 214734813 U CN214734813 U CN 214734813U CN 202021635979 U CN202021635979 U CN 202021635979U CN 214734813 U CN214734813 U CN 214734813U
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- orp
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- air blower
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 238000005273 aeration Methods 0.000 title claims abstract description 12
- 238000005276 aerator Methods 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 230000001546 nitrifying effect Effects 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 238000010992 reflux Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims description 11
- 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
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000033116 oxidation-reduction process Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction 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
- 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
- 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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- 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 ORP monitoring, include: the device comprises an air blower, a microporous aerator, a PLC automatic control device, a DO tester, a regulating valve, a nitrified liquid reflux pump and an ORP 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; arranging a first ORP tester at the water inlet of the facultative tank; and arranging a second ORP tester at the water inlet of the anaerobic tank. The ORP tester is electrically connected with the PLC automatic control device, and the PLC automatic control device is electrically connected with the nitrifying liquid reflux pump. The utility model discloses can be according to the amount of wind of the variable intelligent regulation air-blower of DO number, simultaneously according to the variable intelligent regulation of ORP number the flow of nitrifying liquid backwash pump, degree of automation is high, energy-conserving effectual, data precision is high.
Description
Technical Field
The utility model relates to a high-efficient aeration biochemical system based on DO and ORP 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 ORP (oxidation-reduction potential) value in the anaerobic tank needs to be controlled to be less than-200 mV, and the ORP value in the facultative anaerobic zone is-200 to-100 mV mg/L. If the ORP value is too low, the oxidation of organic matters is incomplete, and the treatment effect is poor; if the ORP value is too high, energy consumption is wasted, and the aging of the activated sludge is accelerated.
At present, the quality and the quantity of inlet water of a plurality of sewage treatment plants fluctuate greatly in different time periods, the working condition of an air blower is single, the accurate control of the sewage biochemical treatment cannot be realized, and the DO value and the ORP value DO not reach the standard or the 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 ORP 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); the ORP numerical values of sewage in the facultative tank and the anaerobic tank are collected and monitored, the output water quantity of the nitrifying liquid reflux pump is intelligently adjusted by using a self-control system (PLC), so that each biochemical section achieves the optimal biochemical effect, and reasonable gas supply, nitrifying liquid supply, energy conservation and consumption reduction are ensured. The utility model discloses a realize through following technical scheme:
high efficiency aeration biochemical system based on DO and ORP monitoring includes: 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 and a second regulating valve, 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; a first DO tester is arranged at the water outlet of the aerobic tank, a second DO tester is arranged in the facultative tank, and the first DO tester, the second DO tester, the air blower, the first regulating valve and the second regulating valve 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.
Further comprising: the aerobic pool and the facultative tank are communicated with each other through the nitrifying liquid reflux pump and a nitrifying liquid reflux pipeline, and nitrifying liquid is injected into the facultative tank; the method is characterized in that a first ORP tester is arranged in the facultative tank, a second ORP tester is arranged in the anaerobic tank, the first ORP tester and the second ORP tester are respectively and electrically connected with a PLC (programmable logic controller) automatic control device, and the PLC automatic control device is electrically connected with a nitrifying liquid reflux pump. The PLC automatic control device automatically controls the rotating speed and the water quantity of the nitrifying liquid reflux pump according to the change of the ORP value collected by the ORP tester, so that the working condition of the nitrifying liquid reflux pump is not single any more, and the aims of optimizing the biochemical effect of the aerobic biochemical section and saving energy are fulfilled.
When the monitored ORP value of the facultative tank is lower than a preset low value in the PLC automatic control system, the flow of the nitrifying liquid reflux pump is increased; when the monitored ORP value of the facultative tank is higher than a preset high value in the PLC automatic control system, reducing the flow of the nitrifying liquid reflux 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 and the second DO tester are current signals, and the rotating speed of the air blower and the opening degree of the regulating valve are automatically controlled through the current signals.
Preferably, the signals transmitted to the PLC automatic control device by the first ORP tester and the second ORP tester are current signals, and the rotating speed of the nitrified liquid reflux pump is automatically controlled through 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 degree of the adjusting valve according to the change of the DO value and intelligently adjust the water volume of the nitrifying liquid reflux pump according to the change of the ORP value, and has 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-a 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-a nitrifying liquid return pipeline, 13-a first ORP tester, 14-a second ORP tester, 15-an anaerobic tank and 16-a nitrifying liquid return pump.
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 ORP 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 hanging chain type micropore aerator, or 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.
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.
A second DO tester 5 is provided in the facultative tank 9 for detecting the oxygen content (i.e., DO value) at the effluent of the facultative tank 9.
A first ORP tester 13 is provided in the facultative tank 9 for detecting the oxidation-reduction potential (i.e., ORP number) of the facultative tank 9. A second ORP tester 14 is provided in the anaerobic tank 15 for measuring the oxidation-reduction potential of the anaerobic tank 15. The aerobic tank 8 is communicated with the facultative tank 9 through a nitrifying liquid reflux pump 16 and a nitrifying liquid reflux pipeline 12, and is used for injecting nitrifying liquid into the facultative tank 9 to ensure that the concentration of the nitrifying liquid is in a proper range.
The first ORP tester 13 and the second ORP tester 14 are electrically connected with the PLC automatic control device 3, and the first ORP tester 13 and the second ORP tester 14 convert the 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 nitrifying liquid reflux pump 16, the PLC automatic control device 3 automatically controls the running frequency of the nitrifying liquid reflux pump 16 according to current signals transmitted by the first ORP tester 13 and the second ORP tester 14, the ORP numerical control in the anaerobic tank 15 and the facultative tank 9 is in an ideal state, and the best biochemical effect from the anaerobic biochemical stage to the aerobic biochemical stage 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 (5)
1. High-efficiency aeration biochemical system based on DO and ORP monitoring is characterized by comprising: the device comprises an air blower (1), a first microporous aerator (2), a PLC 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 first ORP tester (13), a second ORP tester (14) and a nitrified liquid reflux pump (16);
the first microporous aerator (2) is arranged at the bottom of the aerobic tank (8) and is connected with the air outlet of the air blower (1) through a first regulating valve (6) by a gas conveying pipeline (10), and the second microporous aerator (11) is arranged at the bottom of the facultative tank (9) and is connected with the air outlet of the air blower (1) through a second regulating valve (7) by the gas conveying pipeline (10); a first DO tester (4) is arranged at the water outlet of the aerobic tank (8), a second DO tester (5) is arranged in the facultative tank (9), and the first DO tester (4), the second DO tester (5), the blower (1), the first regulating valve (6) and the second regulating valve (7) are electrically connected with the PLC automatic control device (3);
the aerobic pool (8) and the facultative tank (9) are communicated with each other through a nitrifying liquid reflux pump (16) and a nitrifying liquid reflux pipeline (12), a first ORP tester (13) is arranged in the facultative tank (9), a second ORP tester (14) is arranged in the anaerobic pool (15), the first ORP tester (13) and the second ORP tester (14) are electrically connected with the PLC automatic control device (3), and the PLC automatic control device (3) is electrically connected with the nitrifying liquid reflux pump (16).
2. The DO and ORP monitoring based high-efficiency aeration biochemical system according to claim 1, wherein the first microporous aerator (2) and the second microporous aerator (11) are a suspended chain type microporous aerator or a liftable type microporous aerator or a fixed type microporous aerator.
3. The DO and ORP monitoring based high-efficiency aerated biochemical system according to 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 ORP monitoring as claimed in claim 3, wherein the signals transmitted by the first DO tester (4) and the second DO tester (5) to the PLC autonomous device (3) are current signals.
5. The DO and ORP monitoring based high-efficiency aerated biochemical system according to claim 1, wherein the signals transmitted by the first ORP tester (13) and the second ORP tester (14) to the PLC autonomous device (3) are current signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021635979.7U CN214734813U (en) | 2020-08-07 | 2020-08-07 | High-efficiency aeration biochemical system based on DO and ORP monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021635979.7U CN214734813U (en) | 2020-08-07 | 2020-08-07 | High-efficiency aeration biochemical system based on DO and ORP monitoring |
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| CN214734813U true CN214734813U (en) | 2021-11-16 |
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| CN202021635979.7U Active CN214734813U (en) | 2020-08-07 | 2020-08-07 | High-efficiency aeration biochemical system based on DO and ORP monitoring |
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Effective date of registration: 20240410 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. |