CN111717989A - Denitrification concentration and head loss weight calculation control gas variable period release system - Google Patents
Denitrification concentration and head loss weight calculation control gas variable period release system Download PDFInfo
- Publication number
- CN111717989A CN111717989A CN201910222679.1A CN201910222679A CN111717989A CN 111717989 A CN111717989 A CN 111717989A CN 201910222679 A CN201910222679 A CN 201910222679A CN 111717989 A CN111717989 A CN 111717989A
- Authority
- CN
- China
- Prior art keywords
- head loss
- denitrification
- period
- gas
- instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The embodiment of the invention discloses a denitrification concentration and head loss weight calculation control gas variable-period release system, which comprises denitrification deep-bed filters, a control system, a water inlet main pipe, a nitro-nitrogen instrument and a head loss instrument, wherein the nitro-nitrogen instrument is installed on the water inlet main pipe of the denitrification deep-bed filters, the head loss instrument is installed on a water outlet pipe of each denitrification deep-bed filter, and the control system is in signal connection with the nitro-nitrogen instrument and the head loss instrument. The denitrification concentration and head loss weight calculation control gas variable-period release system takes denitrification concentration and head loss as variable factors and respectively sets weight coefficients, thereby realizing dynamic and effective control of gas release period.
Description
Technical Field
The invention relates to the technical field of a sewage treatment denitrification deep bed filter system, in particular to a system for controlling gas variable-period release through calculation of denitrification concentration and head loss weight.
Background
A large amount of gas is generated in the denitrification process of the denitrification deep bed filter and is accumulated in the filter material layer, and water is required to be started to recoil periodically to release the gas so as to recover the filtering capacity of the filter material layer. The existing gas release period control technology comprises a set fixed period, a total amount calculation variable period and a head loss control variable period.
The existing fixed period gas release technology does not consider the change of the concentration of the nitronitrogen of the inlet water of the denitrification deep bed filter, sets the gas release period as a fixed value, and cannot effectively match the dynamic change of the removal amount of the nitronitrogen.
The total amount calculation variable period gas release technology is characterized in that a control system collects the water inlet flow and the nitro nitrogen concentration signals of a denitrification deep bed filter, the gas accumulated in a filter bed is calculated theoretically, and the gas accumulated in the filter bed is compared with the empirical value of the gas accumulation of the filter bed to determine the gas release period. When the instrument has a fault, the total amount calculation variable-period gas release technology cannot effectively realize gas release period control; the influence of head loss is neglected by single theoretical calculation, so that the control of the gas release period in the latter half of the filtration period is invalid.
The head loss control variable period gas release technology is characterized in that a head loss detector is arranged in each denitrification deep bed filter, the head loss of the filter bed is monitored in real time, the detection value is compared with a set value to control the gas release period, the head loss caused by accumulation of gas and suspended matters is slowly increased in the first half of the filtration period of the denitrification deep bed filter, the detection value can reach the set value only in an overlong time, and the gas release period is far longer than the actually required gas release period; in the second half of the filtering period of the denitrification deep bed filter, because suspended matters are accumulated, the loss of the water head in the filter bed is high, the gas accumulation quickly causes the water head loss detection value to touch a set value, at the moment, the gas release period is far shorter than the actually required gas release period, and the effective control of the gas release period is difficult to realize in the actual application process by singly considering the water head loss.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a denitrification concentration and head loss weight calculation control gas variable-period release system aiming at the problems that the existing set period setting technology cannot effectively match the dynamic change of the removal amount of the nitro-nitrogen, the total amount calculation variable-period technology ignores the influence of head loss to cause the failure of gas release period control in the latter half of a filtering period, and the head loss control variable period is difficult to realize the effective control of the gas release period in the practical application process.
In order to solve the technical problems, an embodiment of the invention provides a denitrification concentration and head loss weight calculation control gas variable-period release system, which comprises denitrification deep-bed filters, a control system, a water inlet main pipe, a nitro-nitrogen instrument and a head loss instrument, wherein the water inlet main pipe of the denitrification deep-bed filters is provided with the nitro-nitrogen instrument, the water outlet pipe of each denitrification deep-bed filter is provided with the head loss instrument, and the control system is in signal connection with the nitro-nitrogen instrument and the head loss instrument.
Further, the control method for calculating and controlling the gas variable-period release system by the denitrification concentration and the head loss weight comprises the following steps: inputting the nitro nitrogen concentration, the denitrification concentration weight coefficient K1 and the head loss weight coefficient K2 required by the effluent on an operation interface of a control system; the control system collects the nitro-nitrogen concentration detection value of the nitro-nitrogen instrument and calculates the difference value with the effluent nitro-nitrogen set value, and the difference value is used as the control parameter of the release period of the batch of gas; the control system collects the head loss of the head loss instrument after each batch of gas of each filter is released, and the detection value is used as a control parameter of the release period of the batch of gas; the control system calculates the gas release period of the batch by combining the weight coefficient, and finally executes the gas release.
Further, in the control method, when the nitronitrogen instrument fails and cannot work normally, the fault alarm prompts an operator to set the input of the denitrification concentration difference value on the operation interface, and then the gas release period of the batch is calculated according to the weight coefficient.
Furthermore, the model of the control system is PLC-SN, the model of the nitro-nitrogen instrument is AIT-N, and the model of the water head loss instrument is AIT-HL.
Further, the denitrification concentration and head loss weight calculation control gas variable-period release system further comprises a flow meter, the flow meter is installed on a water inlet main pipe of the denitrification deep bed filter and is in signal connection with the control system, and the type of the flow meter is FIT.
The embodiment of the invention has the following beneficial effects: the denitrification concentration and head loss weight calculation control gas variable-period release system takes denitrification concentration and head loss as variable factors and respectively sets weight coefficients, thereby realizing dynamic and effective control of gas release period.
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 is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a denitrification concentration and head loss weight calculation controlled gas variable-period release system provided by the invention;
FIG. 2 is a control schematic diagram of a system for controlling the gas variable-period release by calculating the denitrification concentration and the head loss weight.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a system for controlling gas periodic release by calculating denitrification concentration and head loss weight according to the present invention. The invention provides a denitrification concentration and head loss weight calculation control gas variable-period release system, which comprises: the device comprises a denitrification deep bed filter 1, a control system 2, a water inlet main pipe 3, a nitro-nitrogen instrument 4, a water head loss instrument 5 and a flowmeter 6.
A nitronitrogen instrument 4 is arranged on a water inlet main pipe of the denitrification deep bed filter 1, a water head loss instrument 5 is arranged on a water outlet pipe of each denitrification deep bed filter 1, and a control system (PLC-SN)2 is in signal connection with the nitronitrogen instrument (AIT-N)4 and the water head loss instrument (AIT-HL) 5. The FIT flow meter 6 is also arranged on a water inlet main pipe of the denitrification deep bed filter 1 and is in signal connection with the control system 2, and the control system 2 can control the water inflow through the flow meter 6.
Referring to fig. 2, fig. 2 is a control schematic diagram of a system for controlling the gas variable-period release by calculating the denitrification concentration and the head loss weight. The control method for calculating and controlling the gas variable-period release system by the denitrification concentration and the head loss weight comprises the following steps: inputting the nitro nitrogen concentration, the denitrification concentration weight coefficient K1 and the head loss weight coefficient K2 required by the effluent on an operation interface of a control system; the control system collects the nitro-nitrogen concentration detection value of the nitro-nitrogen instrument and calculates the difference value with the effluent nitro-nitrogen set value, and the difference value is used as the control parameter of the release period of the batch of gas; the control system collects the head loss of the head loss instrument after each batch of gas of each filter is released, and the detection value is used as a control parameter of the release period of the batch of gas; the control system calculates the gas release period of the batch by combining the weight coefficient, and finally executes the gas release.
When the nitronitrogen instrument fails and cannot work normally, the fault alarm prompts an operator to set the input of the denitrification concentration difference value on an operation interface, and then the gas release period of the batch is calculated according to the weight coefficient.
In the operation process of the denitrification deep bed filter, two factors of gas generated by denitrification and suspended matters accumulated in a filter material layer influence the gas release period.
By implementing the embodiment of the invention, the following beneficial effects are achieved: the denitrification concentration and head loss weight calculation control gas variable-period release system takes denitrification concentration and head loss as variable factors and respectively sets weight coefficients, thereby realizing dynamic and effective control of gas release period.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A denitrification concentration and head loss weight calculation controlled gas variable-period release system is characterized by comprising: the water head loss instrument is installed on a water outlet pipe of the denitrification deep bed filter tank, and the control system is connected with the nitro nitrogen instrument and the water head loss instrument in a signal mode.
2. The denitrification concentration and head loss weight calculation controlled gas variable-period release system according to claim 1, wherein the denitrification concentration and head loss weight calculation controlled gas variable-period release system control method comprises:
inputting the nitro nitrogen concentration, the denitrification concentration weight coefficient K1 and the head loss weight coefficient K2 required by the effluent on an operation interface of a control system;
the control system collects the nitro-nitrogen concentration detection value of the nitro-nitrogen instrument and calculates the difference value with the effluent nitro-nitrogen set value, and the difference value is used as the control parameter of the release period of the batch of gas;
the control system collects the head loss of the head loss instrument after each batch of gas of each filter is released, and the detection value is used as a control parameter of the release period of the batch of gas;
the control system calculates the gas release period of the batch by combining the weight coefficient, and finally executes the gas release.
3. The denitrification concentration and head loss weight calculation control gas variable-period release system according to claim 2, wherein in the control method, when the nitro-nitrogen instrument fails and cannot work normally, a fault alarm prompts an operator to set denitrification concentration difference input on an operation interface, and then the gas release period of the batch is calculated according to the weight coefficient.
4. The system for controlling the gas variable-period release through the denitrification concentration and head loss weight calculation according to claim 1 or 3, wherein the model of the control system is PLC-SN, the model of the nitronitrogen instrument is AIT-N, and the model of the head loss instrument is AIT-HL.
5. The denitrification concentration and head loss weight calculation controlled gas variable-period releasing system according to claim 1, further comprising a flow meter, wherein the flow meter is arranged on a water inlet main pipe of the denitrification deep bed filter and is in signal connection with the control system, and the type of the flow meter is FIT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222679.1A CN111717989A (en) | 2019-03-22 | 2019-03-22 | Denitrification concentration and head loss weight calculation control gas variable period release system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222679.1A CN111717989A (en) | 2019-03-22 | 2019-03-22 | Denitrification concentration and head loss weight calculation control gas variable period release system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111717989A true CN111717989A (en) | 2020-09-29 |
Family
ID=72563190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910222679.1A Pending CN111717989A (en) | 2019-03-22 | 2019-03-22 | Denitrification concentration and head loss weight calculation control gas variable period release system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111717989A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192999A (en) * | 2014-08-04 | 2014-12-10 | 江苏优联环境发展有限公司 | Method for controlling nitrogen release in deep denitrification filter bed |
| CN106673191A (en) * | 2016-12-23 | 2017-05-17 | 江苏川源环保设备有限公司 | Method and system for releasing gas in denitrification deep bed filter |
| CN208055012U (en) * | 2017-11-27 | 2018-11-06 | 江苏道同环境科技有限公司 | A kind of sewage denitrification processing system |
-
2019
- 2019-03-22 CN CN201910222679.1A patent/CN111717989A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192999A (en) * | 2014-08-04 | 2014-12-10 | 江苏优联环境发展有限公司 | Method for controlling nitrogen release in deep denitrification filter bed |
| CN106673191A (en) * | 2016-12-23 | 2017-05-17 | 江苏川源环保设备有限公司 | Method and system for releasing gas in denitrification deep bed filter |
| CN208055012U (en) * | 2017-11-27 | 2018-11-06 | 江苏道同环境科技有限公司 | A kind of sewage denitrification processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104083936B (en) | Monitor the method for the state of filter element of purifier, monitoring device and purifier | |
| CN204607747U (en) | Without the water-purifying machine of waste water | |
| US11440819B2 (en) | Dosing control method and system for micro-flocculation in ultrafiltration | |
| CN106219635A (en) | A kind of ultrapure water machine intelligent management method | |
| CN108525409A (en) | The determination of failure screen pipe, guard method and the device of filter | |
| KR101731949B1 (en) | Water purifier and backwash method having natural flowing type backwash | |
| CN111717989A (en) | Denitrification concentration and head loss weight calculation control gas variable period release system | |
| CN111188383A (en) | Stable filtering centralized water supply system and centralized water supply method | |
| CN204490681U (en) | A kind of wireless monitor Sewage treatment systems | |
| CN203060934U (en) | Filter cloth turntable filtering equipment | |
| CN204406177U (en) | A kind of wastewater treatment supervisory system with alarm function | |
| EP3071815B1 (en) | Systems and methods for managing turbine intake filters | |
| CN104609533A (en) | Control system and method for degradation-resistant organic wastewater ozone heterogeneous catalysis oxidation treatment process | |
| CN109316791A (en) | A kind of method and water purifier of the flushing of purification of water quality intelligent control | |
| CN206255927U (en) | A kind of counter-infiltration system of auto-flushing | |
| JPH01274812A (en) | Cleaning device for fluid | |
| JPS63305907A (en) | Monitor for clogging of filter medium of filter | |
| JPH11123380A (en) | Water treatment apparatus | |
| CN207385206U (en) | A kind of water purifier | |
| CN110345388A (en) | Pipe gallery water supply and sewerage pipeline booster monitoring method | |
| CN206381713U (en) | A kind of fine filter | |
| JPS59189920A (en) | Control apparatus of filter basin | |
| CN211133217U (en) | Manual abluent filter system | |
| CN221296163U (en) | Anti-blocking industrial wastewater treatment device | |
| CN219942399U (en) | Large flux security filter equipment with exhaust and pollution discharge functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200929 |
|
| RJ01 | Rejection of invention patent application after publication |