CN203668102U - Aeration tank dissolved oxygen concentration control system and sewage treatment system - Google Patents
Aeration tank dissolved oxygen concentration control system and sewage treatment system Download PDFInfo
- Publication number
- CN203668102U CN203668102U CN201320884649.5U CN201320884649U CN203668102U CN 203668102 U CN203668102 U CN 203668102U CN 201320884649 U CN201320884649 U CN 201320884649U CN 203668102 U CN203668102 U CN 203668102U
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- China
- Prior art keywords
- dissolved oxygen
- aeration tank
- oxygen concentration
- control system
- blower
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- Expired - Lifetime
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 239000001301 oxygen Substances 0.000 title claims abstract description 117
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 117
- 238000005273 aeration Methods 0.000 title claims abstract description 83
- 239000010865 sewage Substances 0.000 title claims abstract description 19
- 239000000523 sample Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000010802 sludge Substances 0.000 description 5
- 150000002978 peroxides Chemical class 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- 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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- Activated Sludge Processes (AREA)
Abstract
The utility model discloses an aeration tank dissolved oxygen concentration control system and a sewage treatment system, wherein the aeration tank dissolved oxygen concentration control system comprises a dissolved oxygen instrument, a roots blower and a control device, wherein the dissolved oxygen instrument comprises a probe used for detecting the dissolved oxygen concentration in an aeration tank and a transmitter used for converting the dissolved oxygen concentration detected by the probe into electrical signals; the roots blower is used for sending air into the aeration tank, and the roots blower and the aeration tank are in one to one correspondence relation; the control device is connected with the transmitter of the dissolved oxygen instrument and the roots blower, and is used for controlling the running frequency of the roots blower according to the dissolved oxygen concentration detected, so as to change the air supply quantity of the roots blower. According to the utility model, the dissolved oxygen concentration in the aeration tank can be controlled accurately, and the sewage treatment effect is improved.
Description
Technical field
The utility model relates to sewage disposal technology, particularly a kind of aeration tank dissolved oxygen concentration control system and Sewage treatment systems.
Background technology
Along with social development, the problem of water scarcity is day by day serious, and water will become an important factor of restriction social development.People also more and more pay attention to exploitation and the improvement of water technology.
Biologic process for treating sewage is one more special in sewage treatment process, is called again activated sludge process.Activated sludge process can be divided into aerobic method and anaerobic process etc.In aerobe Sewage treatment systems, microorganism utilizes the dissolved oxygen in water, and then the organic pollutant in oxidative degradation water carries out the lock out operation of microorganism and water, reaches the object of purifying waste water.Dissolved oxygen English name is Dissolved Oxygen, is conventionally denoted as DO, refers to the content that is dissolved in oxygen in water, with oxygen in every premium on currency milligram a number represent, unit is mg/L.
In order to make microorganism in water obtain enough dissolved oxygens, people are stirred in water and are inflated by surface, the number of oxygen in water is a very important index in bio sewage treating process, dissolved oxygen can reflect the operation conditions of whole system more intuitively, rapidly, can directly have influence on wastewater treatment efficiency to the control of dissolved oxygen.
But owing to there being many uncertain factors in sewage treatment process, the variation of amount of inlet water, water quality, the variation of active sludge state all can cause the variation of dissolved oxygen in aeration tank, the phenomenon that makes often to occur in aeration tank oxygen debt or peroxide, affects wastewater treatment efficiency.
Sewage work's air-blast system mostly is one or more gas blower at present, when operation, the escape pipe of all gas blowers is merged, send air blast machine room by an air line, behind aeration tank, be further divided into multiple air lines, give respectively many aeration tank air feed, dissolved oxygen Controlling System is that the valve opening degree of this aeration tank air supply line of dissolved oxygen meter signal feedback of single seat aeration tank regulates, and carries out the control of air capacity, thereby controls the dissolved oxygen of aeration tank.But this kind of method control accuracy is low, aeration tank dissolved oxygen variation range is large, and adjusts the air quantity that the valve of an aeration tank can cause other aeration tanks and change, and causes chain reaction, makes to control to become complex.
Utility model content
Goal of the invention of the present utility model is to provide a kind of aeration tank dissolved oxygen concentration control system, can accurately control dissolved oxygen concentration in aeration tank, and lifting sewage treatment effect.
For achieving the above object, the utility model provides a kind of aeration tank dissolved oxygen concentration control system, comprising:
Dissolved oxygen meter, described dissolved oxygen meter comprises: for surveying the probe of aeration tank dissolved oxygen concentration and for the dissolved oxygen concentration of described probe detection being converted to the transmitter of electrical signal;
Root's blower, for blowing to described aeration tank, described Root's blower and described aeration tank are one-to-one relationship;
Control device, is connected with transmitter and the Root's blower of described dissolved oxygen meter, for the running frequency of Dissolved Oxygen concentration Control Root's blower of surveying according to dissolved oxygen meter.
Further, described control device comprises programmable logic controller.
Further, described control device comprises and the communication module of upper machine communication.
Further, described communication module comprises ethernet communication module and/or Process FieldbusROFIBUS module.
Further, described dissolved oxygen meter is online dissolved oxygen meter.Further, the detection accuracy of described dissolved oxygen meter is less than or equal to 0.05mg/L.
The utility model also provides a kind of Sewage treatment systems, comprises aeration tank, and described aeration tank is provided with above-mentioned aeration tank dissolved oxygen concentration control system.
In the technical solution of the utility model, by being set, separate unit Root's blower blows to single seat aeration tank, make aeration tank can obtain required oxygen, by being set, carrys out dissolved oxygen meter the concentration of dissolved oxygen in real-time detection aeration tank, and the result of detection is sent to by transmitter in the control device being attached thereto, make control device regulate in real time the running frequency of this Root's blower according to the concentration value of current dissolved oxygen, and then regulate the aeration rate of this aeration tank, not only can avoid peroxide or oxygen debt phenomenon, also dissolved oxygen concentration in aeration tank accurately can be controlled in pre-determined range, therefore effect that also can lifting sewage processing.
Brief description of the drawings
The structural representation of the aeration tank dissolved oxygen concentration control system that Fig. 1 provides for the utility model embodiment 1.
Fig. 2 is the structural representation of the control device in Fig. 1.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is further elaborated.
Embodiment 1
The structural representation of the aeration tank dissolved oxygen concentration control system that Fig. 1 provides for the utility model embodiment 1, as shown in Figure 1, this system comprises dissolved oxygen meter 10, Root's blower (can join variable-frequency motor) 12 and control device 14.Dissolved oxygen meter 10 is for surveying the dissolved oxygen concentration of aeration tank, the transmitter 102 that it comprises the probe 101 for surveying aeration tank dissolved oxygen concentration and is converted to electrical signal for the dissolved oxygen concentrations that probe 101 is surveyed; Root's blower 12 is for blowing to described aeration tank, and wherein Root's blower 12 is one-to-one relationship with aeration tank, and unlike the prior art, the present embodiment is blown to single seat aeration tank by separate unit Root's blower; Control device 14, is connected with dissolved oxygen meter 10 and Root's blower 12, for the running frequency of the Dissolved Oxygen concentration Control Root's blower 12 surveyed according to dissolved oxygen meter 10.
The probe 101 of above-mentioned dissolved oxygen meter 10 is for going deep into aeration tank, survey the concentration of dissolved oxygen in aeration tank, transmitter 102 input terminuss connect probe 101, and output terminal connects control device 14, be converted to electrical signal be sent to control device 14 for the dissolved oxygen concentration that probe 101 is surveyed.For example, transmitter 102 can be converted to the analog electrical signal of 4～20mA or 0～20mA by the dissolved oxygen concentration value of probe transmission, and this analog electrical signal is sent to control device 14.
In technique scheme, dissolved oxygen meter 10 connects control device 14, forms feedback loop, and control device 14 connects Root's blower 12, forms control loop.When work, can in transmitter 102, set the measurement upper and lower bound of dissolved oxygen concentration, 4～20mA of corresponding analog electrical signal, when starting, Root's blower 12 starts with low-limit frequency, be generally 20HZ, wind supply quantity minimum, if surveying, dissolved oxygen meter learns that dissolved oxygen concentration current in aeration tank is lower than prescribing a time limit under the dissolved oxygen concentration of setting, the running frequency of 14 control Root's blowers 12 of control device raises, each frequency raising is no more than 1HZ, preferably 0.2-0.6HZ, be more preferably 0.3-0.5HZ, air output is increased, then wait for the signal feedback of dissolved oxygen meter 10, until in aeration tank dissolved oxygen concentration in preset range, the each liter of Root's blower high-frequency opening time of interval is no less than 1 minute, but be no more than 10 minutes, the preferred timed interval is 2-4 minute, in Root's blower operational process, detect dissolved oxygen concentration in aeration tank higher than set dissolved oxygen upper control limit time, the running frequency that control device 14 is controlled Root's blower 12 reduces, reduce the aeration rate of aeration tank, each frequency reducing is no more than 1HZ, preferably 0.2-0.6HZ, be more preferably 0.3-0.5HZ, air output is reduced, then wait for the signal feedback of dissolved oxygen meter 10, until in aeration tank dissolved oxygen concentration in preset range, Root's blower falls low-frequency opening time interval at every turn and is no less than 1 minute, but be no more than 10 minutes, the preferred timed interval is 2-4 minute.
Therefore, in technique scheme, by being set, blow to single seat aeration tank separate unit Root's blower (can join variable-frequency motor) 12, make aeration tank can obtain required oxygen, by being set, carrys out dissolved oxygen meter 10 concentration of dissolved oxygen in real-time detection aeration tank, and the result of detection is sent in control device 14, make control device regulate in real time the running frequency of Root's blower 12 according to the concentration value of current dissolved oxygen, and then the aeration rate of adjusting aeration tank, not only can avoid peroxide or oxygen debt phenomenon, also dissolved oxygen concentration in aeration tank accurately can be controlled in pre-determined range.
In order to ensure the control accuracy of dissolved oxygen concentration, the detection accuracy of dissolved oxygen meter 10 is less than or equal to 0.05mg/L, adopts the dissolved oxygen meter of this precision, can accurately control dissolved oxygen concentration variation in aeration tank and float between ± 0.10～± 0.5.
In the present embodiment, dissolved oxygen meter 10 preferably adopts ferroelectric utmost point dissolved oxygen meter.In addition, because probe 101 is arranged in the active sludge with aeration agitation, damaged in the active sludge of aeration tank for fear of dissolved oxygen meter, self-stripping unit is also installed in dissolved oxygen meter 10.
Fig. 2 is the structural representation of the control device in Fig. 1.As shown in Figure 2, control device 14 specifically can be housing, it comprises programmable logic controller (PLC) 141, programmable logic controller (PLC) 141 connects the transmitter 102 of dissolved oxygen meter 10 by analog to digital converter 142, digital to analog converter 142 sends programmable logic controller to after being converted to numerary signal for the simulating signal that transmitter 102 is transmitted.Use programmable logic controller, can accurately control according to the dissolved oxygen concentration value of surveying the running frequency of Root's blower.
In the present embodiment, in order to ensure the real-time control to dissolved oxygen concentration in aeration tank, it is 1-10 minute that control device 14 is carried the cycle of actuating signal to Root's blower 12, preferred, is 2-4 minute, preferred, is 2.5-3.5 minute.
In the present embodiment, in order to ensure the real-time control to dissolved oxygen concentration in aeration tank, the amplitude of Root's blower 12 each change of frequency is no more than 1HZ, and preferably 0.2-0.6HZ, is more preferably 0.3-0.5HZ.
Alternatively, control device 14 also comprises the communication module 143 with upper machine communication, this communication module 143 specifically can comprise ethernet communication module and/or Process FieldbusROFIBUS (Process-Field BUS) module, pass through communication module, can be by result of detection current dissolved oxygen meter, the running frequency that Root's blower is current, the fault alarm information of control device etc. is uploaded to upper computer and monitors in real time, and, upper computer can pass through communication module 143, send the instruction of controlling Root's blower to control module, with the startup of Long-distance Control Root's blower, stop, raising speed, reduction of speed etc.
Embodiment 2
The embodiment of the present invention 2 provides a kind of Sewage treatment systems, and this system comprises aeration tank, and the aeration tank dissolved oxygen concentration control system providing in embodiment 1 is provided in described aeration tank.
The principle of work of aeration tank dissolved oxygen concentration control system and technique effect are described in detail in embodiment 1, repeat no more.
In this technical scheme, aeration tank dissolved oxygen concentration control system is blown to single seat aeration tank by separate unit Root's blower 12 is set, make aeration tank can obtain required oxygen, by being set, carrys out dissolved oxygen meter 10 concentration of dissolved oxygen in real-time detection aeration tank, and the result of detection is sent in control device 14, make control device regulate in real time the running frequency of Root's blower 12 according to the concentration value of current dissolved oxygen, and then the aeration rate of adjusting aeration tank, not only can avoid peroxide or oxygen debt phenomenon, also dissolved oxygen concentration in aeration tank accurately can be controlled in pre-determined range, reach the object of accurate control dissolved oxygen concentration, make the effect of the Sewage treatment systems lifting sewage processing of applying this Controlling System.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.
Claims (7)
1. an aeration tank dissolved oxygen concentration control system, is characterized in that, comprising:
Dissolved oxygen meter, described dissolved oxygen meter comprises: for surveying the probe of aeration tank dissolved oxygen concentration and for the dissolved oxygen concentration of described probe detection being converted to the transmitter of electrical signal;
Root's blower, for blowing to described aeration tank, described Root's blower and described aeration tank are one-to-one relationship;
Control device, is connected with transmitter and the Root's blower of described dissolved oxygen meter, for according to the running frequency of the Dissolved Oxygen concentration Control Root's blower of dissolved oxygen meter detection, changes the wind supply quantity of Root's blower.
2. aeration tank dissolved oxygen concentration control system according to claim 1, is characterized in that, described control device comprises programmable logic controller.
3. aeration tank dissolved oxygen concentration control system according to claim 1, is characterized in that, described control device comprises the communication module with upper machine communication.
4. aeration tank dissolved oxygen concentration control system according to claim 3, is characterized in that, described communication module comprises ethernet communication module and/or Process FieldbusROFIBUS module.
5. according to the aeration tank dissolved oxygen concentration control system described in claim 1-4 any one, it is characterized in that, described dissolved oxygen meter is online dissolved oxygen meter.
6. according to the aeration tank dissolved oxygen concentration control system described in claim 1-4 any one, it is characterized in that, the detection accuracy of described dissolved oxygen meter is less than or equal to 0.05mg/L.
7. a Sewage treatment systems, is characterized in that, comprises aeration tank, and described aeration tank is provided with the arbitrary described aeration tank dissolved oxygen concentration control system of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884649.5U CN203668102U (en) | 2013-12-30 | 2013-12-30 | Aeration tank dissolved oxygen concentration control system and sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884649.5U CN203668102U (en) | 2013-12-30 | 2013-12-30 | Aeration tank dissolved oxygen concentration control system and sewage treatment system |
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| Publication Number | Publication Date |
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| CN203668102U true CN203668102U (en) | 2014-06-25 |
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| CN201320884649.5U Expired - Lifetime CN203668102U (en) | 2013-12-30 | 2013-12-30 | Aeration tank dissolved oxygen concentration control system and sewage treatment system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914897A (en) * | 2015-04-14 | 2015-09-16 | 北京金控自动化技术有限公司 | Continuous activated sludge process aeration control method and system |
| CN105549519A (en) * | 2014-10-28 | 2016-05-04 | 兰州理工大学 | Automation control system of liming process in production process of gelatin |
| CN105776515A (en) * | 2016-05-12 | 2016-07-20 | 华仪环保有限公司 | Aeration device, control method and device, and sewage treatment station |
| CN106277301A (en) * | 2016-09-07 | 2017-01-04 | 天津亿利科能源科技发展股份有限公司 | The aerating system of offshore platform sewage disposal and control method |
| CN110748484A (en) * | 2019-10-30 | 2020-02-04 | 浙江珂勒曦动力设备股份有限公司 | Screw blower |
| CN115448444A (en) * | 2022-10-14 | 2022-12-09 | 一汽丰田汽车有限公司 | Aeration system, aeration control method and device thereof and storage medium |
-
2013
- 2013-12-30 CN CN201320884649.5U patent/CN203668102U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549519A (en) * | 2014-10-28 | 2016-05-04 | 兰州理工大学 | Automation control system of liming process in production process of gelatin |
| CN104914897A (en) * | 2015-04-14 | 2015-09-16 | 北京金控自动化技术有限公司 | Continuous activated sludge process aeration control method and system |
| CN105776515A (en) * | 2016-05-12 | 2016-07-20 | 华仪环保有限公司 | Aeration device, control method and device, and sewage treatment station |
| CN106277301A (en) * | 2016-09-07 | 2017-01-04 | 天津亿利科能源科技发展股份有限公司 | The aerating system of offshore platform sewage disposal and control method |
| CN110748484A (en) * | 2019-10-30 | 2020-02-04 | 浙江珂勒曦动力设备股份有限公司 | Screw blower |
| CN115448444A (en) * | 2022-10-14 | 2022-12-09 | 一汽丰田汽车有限公司 | Aeration system, aeration control method and device thereof and storage medium |
| CN115448444B (en) * | 2022-10-14 | 2023-12-29 | 一汽丰田汽车有限公司 | Aeration system, aeration control method and device thereof and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190510 Address after: 100024 No. 121, Building 1, Guanzhuang Road, Changying Township, Chaoyang District, Beijing Patentee after: MBP ENVIRONMENTAL ENGINEERING CO.,LTD. Address before: Room 301, Unit 2, Building 10 No. 1, West Village, Dingfuzhuang, Chaoyang District, Beijing Patentee before: EBIS (BEIJING) ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
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| CX01 | Expiry of patent term |