CN216584395U - Carbon-adding denitrification control structure - Google Patents
Carbon-adding denitrification control structure Download PDFInfo
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- CN216584395U CN216584395U CN202122397900.2U CN202122397900U CN216584395U CN 216584395 U CN216584395 U CN 216584395U CN 202122397900 U CN202122397900 U CN 202122397900U CN 216584395 U CN216584395 U CN 216584395U
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- reflux
- detector
- flow meter
- water inlet
- pump
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- 238000010992 reflux Methods 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 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 claims abstract description 15
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000004062 sedimentation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 14
- 239000010865 sewage Substances 0.000 abstract description 11
- 239000003814 drug Substances 0.000 abstract description 10
- 238000004364 calculation method Methods 0.000 abstract description 4
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000013528 artificial neural network Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 238000004065 wastewater treatment Methods 0.000 description 4
- 239000010841 municipal wastewater Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 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
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 244000059217 heterotrophic organism Species 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002351 wastewater Substances 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 the field of sewage treatment, in particular to a carbon-adding denitrification control structure. The structure comprises a water inlet flow meter, a water inlet on-line multifunctional detector, an ORP detector, a nitrate nitrogen analyzer, an ammonia nitrogen analyzer, a water outlet on-line multifunctional detector, an external reflux flow meter, an internal reflux flow meter, a dosing metering pump, an internal reflux pump and an external reflux pump; wherein, each flowmeter and each detector transmit data to a control room; and after the control room judges each data manually, the dosing metering pump is controlled and adjusted. The model and the neural network algorithm established according to the actual process and the operation condition of the water plant are used for carrying out manual analysis processing on the received data to obtain a calculation result by adopting a feedforward and feedback mode, and the dosing metering pump is controlled to operate according to the calculation result to dynamically control the dosing amount of the medicament, so that the problems of extensive fixed and excessive dosing depending on manual experience are solved, and the medicament cost is greatly saved.
Description
Technical Field
The utility model relates to the field of sewage treatment, in particular to a carbon-adding denitrification control structure.
Background
With the continuous improvement of the discharge standard of the urban sewage treatment plant, many sewage treatment plants in China require upgrading and reconstruction. Namely, the primary standard B is upgraded to the primary standard A from the original discharge standard of pollutants for municipal wastewater treatment plants (GB 18918-2002). Besides the high modification cost (some plants even exceed the cost for building the plants), the modification process has another difficulty that the problem of insufficient carbon source required by denitrification when the biological treatment process technology reaches the first-class A standard in the discharge Standard of pollutants for municipal wastewater treatment plant (GB 18918-2002) is difficult to solve. It is generally believed that the C/N ratio of the wastewater entering the anoxic zone should be controlled to be at least greater than 4 to ensure biological denitrification. Research results show that when the C/N of inlet water is less than or equal to 4, the TN of outlet water hardly reaches the required outlet water standard. However, C/N in most urban sewage in China is less than or equal to 4, and the requirement of biological denitrification on a carbon source cannot be met. Particularly, the concentration of TN in water regulated by the first-class A standard of water discharge of municipal wastewater treatment plants in China is less than or equal to 15mg/L, so that other methods are required to make up for the defects of the biological denitrification technology. In order to solve the problem, although a plurality of new processes such as an improved A2/O process, an inverted A2/O process and the like are proposed, the problem that the carbon source is required to be insufficient for reaching the standard is not solved. Therefore, the sewage treatment plant must adopt a carbon supplementing mode of an external carbon source, but most of the sewage treatment plants adopt the current adding mode of manually adjusting the adding amount of the carbon source according to the water outlet result, and the carbon source is excessively added to ensure that the water outlet reaches the standard. This approach has hysteresis resulting in significant increases in wastewater treatment costs, and also increases sludge plant yields, which in turn leads to new environmental pollution and secondary treatment costs.
The current sewage plant process flow generally comprises the following steps: the raw sewage is treated in a first-stage mode to an anoxic tank, the organic nitrogen is oxidized and decomposed by heterotrophic organisms to be converted into ammonia nitrogen through ammoniation, the ammonia nitrogen is converted into nitrate nitrogen and nitrite nitrogen through nitrobacteria in an aerobic tank, and finally the nitrate nitrogen is converted into nitrogen through the denitrifying bacteria action of the anoxic tank to finish the biological denitrification process.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a carbon-adding denitrification control structure which characterized in that: the structure comprises a water inlet flow meter, a water inlet on-line multifunctional detector, an ORP detector, a nitrate nitrogen analyzer, an ammonia nitrogen analyzer, a water outlet on-line multifunctional detector, an external reflux flow meter, an internal reflux flow meter, a dosing metering pump, a control room, an internal reflux pump and an external reflux pump;
the system comprises a water inlet flow meter, a water inlet on-line multifunctional detector, an ORP detector, a nitrate nitrogen analyzer, an ammonia nitrogen analyzer, a water outlet on-line multifunctional detector, an outer reflux flow meter and an inner reflux flow meter, wherein data of the outer reflux flow meter and the inner reflux flow meter are transmitted to a control room, and the control room can control the dosing metering pump.
Further, the water inlet flow meter and the online water inlet multifunctional detector are connected to a plant water inlet pipe, and the ORP detector is installed in the anoxic tank.
Further, the nitrate nitrogen analyzer and the ammonia nitrogen analyzer are arranged at the tail end of the aerobic tank; the water outlet on-line multifunctional detector is connected to a plant water outlet pipe.
Further, the external reflux flowmeter is arranged on a reflux pipeline between the secondary sedimentation tank and the anaerobic tank; the internal reflux flowmeter is arranged on a reflux pipeline between the aerobic tank and the anoxic tank.
Further, the dosing metering pump is installed between the carbon source storage tank and the dosing pipeline of the anoxic tank.
Further, the inner reflux pump is arranged on a reflux pipeline between the aerobic tank and the anoxic tank, and the outer reflux pump is arranged on a reflux pipeline between the secondary sedimentation tank and the anaerobic tank.
The utility model has the following beneficial effects:
a comprehensive instrument detection structure is established in a biochemical structure, and the water quality condition can be transmitted to a biological denitrification control module in real time aiming at denitrification, so that a timely, effective and comprehensive data basis is provided for calculating dynamic adding amount.
The model and the neural network algorithm established according to the actual process and the operation condition of the water plant are used for carrying out manual analysis processing on the received data to obtain a calculation result by adopting a feedforward and feedback mode, and the dosing metering pump is controlled to operate according to the calculation result to dynamically control the dosing amount of the medicament, so that the problems of extensive fixed and excessive dosing depending on manual experience are solved, and the medicament cost is greatly saved.
Closely links the process sections of sewage treatment together, realizes the linkage operation of process equipment by closed-loop control, performs stable process control on each process section to achieve optimal operation parameters, and stably operates the whole dosing work,
drawings
FIG. 1 is a schematic view of the connection structure of the present invention.
Description of reference numerals: 1. the inlet tube, 2, the flowmeter of intaking, 3, the online multifunctional detector of intaking, 4, the anaerobism pond, 5, the oxygen deficiency pond, 6, good oxygen pond, 7, ORP detector, 8, nitrate nitrogen analyzer, 9, ammonia nitrogen analyzer, 10, two heavy ponds, 11, the online multifunctional detector of play water, 12, outer reflux flow meter, 13, interior reflux flow meter, 14, the outlet pipe, 15, the carbon source storage tank, 16, add the medicine measuring pump, 17, the control room, 19, interior reflux pump, 20, outer reflux pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A carbon-adding denitrification control structure comprises a water inlet flow meter 2, a water inlet on-line multifunctional detector 3, an ORP detector 7, a nitrate nitrogen analyzer 8, an ammonia nitrogen analyzer 9, a water outlet on-line multifunctional detector 11, an outer reflux flow meter 12, an inner reflux flow meter 13, a chemical adding metering pump 16, a control chamber 17, an inner reflux pump 19 and an outer reflux pump 20;
the water inflow flowmeter 2, the online multifunctional detector 3 of intaking, ORP detector 7, nitrate nitrogen analyzer 8, ammonia nitrogen analyzer 9, the online multifunctional detector 11 of play water, outer reflux flowmeter 12 and the 13 data transmission of interior reflux flowmeter to control room 17, and control room 17 can control and add medicine measuring pump 16.
The water inlet flowmeter 2 and the online multifunctional water inlet detector 3 are connected to a plant water inlet pipe 1, and the ORP detector 7 is installed in an anoxic pond 5.
A nitrate nitrogen analyzer 8 and an ammonia nitrogen analyzer 9 are arranged at the tail end of the aerobic tank 6; the on-line multifunctional effluent detector 11 is connected to a plant water outlet pipe 14.
The external reflux flowmeter 12 is arranged on a reflux pipeline between the secondary sedimentation tank 10 and the anaerobic tank 4; the internal reflux flowmeter 13 is arranged on a reflux pipeline between the aerobic tank 6 and the anoxic tank 5.
The dosing metering pump 16 is arranged between the carbon source storage tank 15 and the dosing pipeline of the anoxic tank 5.
The inner reflux pump 19 is arranged on a reflux pipeline between the aerobic tank 6 and the anoxic tank 5, and the outer reflux pump 20 is arranged on a reflux pipeline between the secondary sedimentation tank 10 and the anaerobic tank 4.
In summary, the working process of the control structure is as follows: the flow meters, the detectors and other devices can comprehensively collect water quality and water quantity data, measure the inflow rate and index data such as ammonia nitrogen, nitrate nitrogen, COD and the like and transmit the data to the control room 17, and after manual data analysis and operation are carried out in the control room 17, the dosing metering pump 16 is controlled to execute corresponding instructions, and real-time medicament dosing amount is stored and analyzed.
After the carbon source is added into the sewage, the nitrate nitrogen analyzer 8, the ammonia nitrogen analyzer 9 and the online multifunctional outlet water detector 11 in the aerobic tank 6 obtain feedback data, the water quality data is transmitted to the control room 17, after manual data analysis and operation are carried out by the control room 17, corresponding parameters are adjusted, the medicine adding amount is corrected, then the medicine adding pump 16 is controlled to execute corresponding instructions, and the real-time medicine adding amount is stored and analyzed, so that the closed-loop control of feedforward and feedback is realized.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the utility model to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
Claims (3)
1. The utility model provides a carbon-adding denitrification control structure which characterized in that: the structure comprises a water inlet flow meter (2), a water inlet on-line multifunctional detector (3), an ORP detector (7), a nitrate nitrogen analyzer (8), an ammonia nitrogen analyzer (9), a water outlet on-line multifunctional detector (11), an external reflux flow meter (12), an internal reflux flow meter (13), a dosing metering pump (16), a control room (17), an internal reflux pump (19) and an external reflux pump (20);
the water inlet flow meter (2), the water inlet on-line multifunctional detector (3), the ORP detector (7), the nitrate nitrogen analyzer (8), the ammonia nitrogen analyzer (9), the water outlet on-line multifunctional detector (11), the dosing metering pump (16), the external reflux flow meter (12) and the internal reflux flow meter (13) are all electrically connected with the control room (17); the water inlet flowmeter (2) and the water inlet online multifunctional detector (3) are connected to a plant water inlet pipe (1), and the ORP detector (7) is installed in the anoxic tank (5);
the inner reflux pump (19) is arranged on a reflux pipeline between the aerobic tank (6) and the anoxic tank (5), and the outer reflux pump (20) is arranged on a reflux pipeline between the secondary sedimentation tank (10) and the anaerobic tank (4).
2. The structure of claim 1, wherein: the nitrate nitrogen analyzer (8) and the ammonia nitrogen analyzer (9) are arranged at the tail end of the aerobic tank (6); the water outlet on-line multifunctional detector (11) is connected to a plant water outlet pipe (14).
3. The structure of claim 1, wherein: the external reflux flowmeter (12) is arranged on a reflux pipeline between the secondary sedimentation tank (10) and the anaerobic tank (4); the internal reflux flowmeter (13) is arranged on a reflux pipeline between the aerobic tank (6) and the anoxic tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397900.2U CN216584395U (en) | 2021-09-30 | 2021-09-30 | Carbon-adding denitrification control structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397900.2U CN216584395U (en) | 2021-09-30 | 2021-09-30 | Carbon-adding denitrification control structure |
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| Publication Number | Publication Date |
|---|---|
| CN216584395U true CN216584395U (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122397900.2U Active CN216584395U (en) | 2021-09-30 | 2021-09-30 | Carbon-adding denitrification control structure |
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| Country | Link |
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| CN (1) | CN216584395U (en) |
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2021
- 2021-09-30 CN CN202122397900.2U patent/CN216584395U/en active Active
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Effective date of registration: 20240530 Address after: 215000 2F, building 1, No. 100, Guangqi Road, high tech Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Jiuzheng Water Technology Co.,Ltd. Country or region after: China Address before: 250100 room 1013-1016, block B, building 1, Jinan Yaogu, Gangxing Third Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee before: Shandong Bohou Data Technology Co.,Ltd. Country or region before: China |