CN113666482A - Control mode of tubular sewage treatment equipment - Google Patents
Control mode of tubular sewage treatment equipment Download PDFInfo
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- CN113666482A CN113666482A CN202111055007.XA CN202111055007A CN113666482A CN 113666482 A CN113666482 A CN 113666482A CN 202111055007 A CN202111055007 A CN 202111055007A CN 113666482 A CN113666482 A CN 113666482A
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- 239000010865 sewage Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
- 238000005273 aeration Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a control mode of tubular sewage treatment equipment, which is provided with a time sequence circulation control mode built by a time relay combination according to an operation circulation process of JBR equipment besides field control, local control and remote control finished by a PLC (programmable logic controller) for a user to select, and is used for a small sewage treatment user to select and save resources. The time sequence cyclic control mode realized by the time relay is flexible and convenient, has lower price, can be maintained by field engineers, and is suitable for small-sized sewage treatment units.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a control mode of tubular sewage treatment equipment.
Background
The sewage treatment control technology in China mainly has the following three modes: and three control modes of field control, local control and remote control are adopted.
The field control is that a manual control button is arranged near the electric equipment; the local control is divided into local manual control and local automatic control. The local manual control is implemented through a local operation interface of the PLC station, and the local automatic control automatically controls the operation of equipment according to process parameters and a preset program through the PLC station without manual intervention; the remote control includes remote manual control and remote automatic control. The remote manual control is to control all the processes and electrical equipment of the sewage treatment plant by a keyboard and a mouse of a main control machine (an upper computer). The control mode makes the main control machine become the centralized operation platform of all the electric and technological equipment of the sewage plant. When the remote automatic control is finished, the main control machine, the field operation display terminal (each PLC station) and the field sub-station coordinate to automatically judge whether the on/off conditions of various devices are met or whether the operation values are optimal according to the detection values of various process parameters and the operation state of the devices, and control the devices according to the results.
Disclosure of Invention
In view of the above, the invention provides a control mode of a tubular sewage treatment device, which realizes local control of JBR (joint brake recovery) equipment by utilizing time matching of a submersible pump and an electromagnetic valve.
In order to achieve the purpose, the invention provides the following technical scheme:
a control mode of a tubular sewage treatment device comprises the following steps:
s1, simultaneously starting the submersible pump and the electromagnetic valve for the duration A, and then entering the step S2; the submersible pump is connected with the ejector and arranged in a biological reaction zone of the tubular sewage treatment equipment; the electromagnetic valve is arranged on a water inlet pipe of the biological reaction area;
s2, closing the electromagnetic valve for a time length B, and then entering the step S3;
s3, closing the submersible pump and the electromagnetic valve at the same time for a period C, and then entering the step S1.
Preferably, the time period a: B: C ═ 3:2: 1.
Preferably, the time period A is 4.5 hours, the time period B is 3 hours, and the time period C is 1.5 hours.
Preferably, a timing cycle control circuit is provided, the timing cycle control circuit including: a first time relay, a second time relay, a third time relay, a first intermediate relay of the submersible pump and a second intermediate relay of the solenoid valve;
the contact of the first time relay is connected in series with the first intermediate relay, the contact of the second time relay is connected in series with the second intermediate relay, and the contact of the third time relay is connected in series with the first time relay.
Preferably, a timing cycle control circuit is provided, the timing cycle control circuit including: the first path, the second path, the third path and the fourth path are connected in parallel between the KC end and the N end;
the first path comprises: the normally closed delay contact of the third time relay and the first time relay are connected in series;
the second path includes: a first normally closed time delay contact of the first time relay and a first intermediate relay of the submersible pump; the KC end of a first normally closed delay contact of the first time relay is connected with the KC end of the time sequence circulation control circuit;
the third path includes: the second normally closed time delay contact and the second time relay of the first time relay are connected in series;
the fourth path includes: a normally open time delay contact of the first time relay and a third time relay which are connected in series;
the timing cycle control circuit further comprises: a fifth path; the fifth path includes: a normally closed delay contact of a second time relay and a second intermediate relay of the electromagnetic valve which are connected in series; one end of the fifth path is connected between the first normally closed time delay contact of the first time relay of the second path and the first intermediate relay, and the other end of the fifth path is connected to the N end of the time sequence circulation control circuit.
Preferably, the set time of the first time relay is a + B, the set time of the second time relay is a, and the set time of the third time relay is C.
Preferably, in the step S1, the submersible pump and the electromagnetic valve are turned on simultaneously for a time period a, and then the normally closed electric contact of the second time relay in the fifth path is opened, so that the second intermediate relay is short-circuited, thereby closing the electromagnetic valve;
in the step S2, after the electromagnetic valve is closed for a time period B, the first normally closed time delay contact of the first time relay in the second path is opened, so that the first intermediate relay is short-circuited, and the submersible pump is turned off; a second normally closed time delay contact of the first time relay in the fourth path is disconnected, so that the second time relay is short-circuited; a normally open time delay contact of the first time relay in the fifth path is closed, so that the third time relay is electrified;
in the step S3, the submersible pump and the electromagnetic valve are turned off at the same time for a time period C, and then the normally closed delay contact of the third time relay in the first path is opened, so that the first time relay is short-circuited.
Before step S1, the method further includes the steps of:
s0: acquiring a command for controlling mode selection, and selecting a control mode according to the command: the control method comprises the following steps of field control, PLC local control, PLC remote control or sequential cycle control.
According to the technical scheme, the control mode of the tubular sewage treatment equipment provided by the invention is provided with a time sequence circulation control mode which is built by a time relay combination according to the operation circulation process of JBR equipment and is selected by a user besides field control, local control and remote control which are completed by a PLC, so that the small sewage treatment user can select the control mode, and resources are saved. The time sequence cyclic control mode realized by the time relay is flexible and convenient, has lower price, can be maintained by field engineers, and is suitable for small-sized sewage treatment units.
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. 1a is a schematic diagram of a solenoid valve control provided in an embodiment of the present invention;
FIG. 1b is a terminal wiring diagram of FIG. 1 a;
FIG. 2a is a schematic diagram of a control of a submersible pump according to an embodiment of the present invention;
FIG. 2b is a terminal wiring diagram of FIG. 2 a;
FIG. 2c is an electrical diagram of a submersible pump provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of timing control according to an embodiment of the present invention;
FIG. 4a is a schematic structural view of a tubular sewage treatment apparatus according to an embodiment of the present invention;
FIG. 4b is a schematic structural view of a tubular sewage treatment apparatus according to another embodiment of the present invention.
Wherein, 1 is a water inlet pipe; 2 is a vent pipe; 3 is a cable tube; 4 is an air suction pipe; 5 is a water pump water pressing pipe; 6 is a medicine feeding pipe; 7 is a water outlet pipe; 8 is a perforated mud pipe;
firstly, an ejector is adopted; ② a submersible pump; thirdly, biological ropes;
i is a biological reaction zone; II is a flow guide area; III is a precipitation zone; IV is a mixing zone; v is a flocculation zone; VI is a phosphorus removal area.
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.
The control mode of the pipe type sewage treatment equipment provided by the embodiment of the invention comprises the following steps:
s1, simultaneously starting the submersible pump II and the electromagnetic valve for the duration A, and then entering the step S2; the submersible pump is connected with the jet device and arranged in a biological reaction area I of the tubular sewage treatment equipment; the electromagnetic valve is arranged on a water inlet pipe 1 of the biological reaction zone I;
s2, closing the electromagnetic valve for a time length B, and then entering the step S3;
s3, closing the submersible pump and the electromagnetic valve at the same time for the duration of C, and then entering the step S1.
According to the technical scheme, the control mode of the tubular sewage treatment equipment provided by the embodiment of the invention utilizes the time matching setting of the submersible pump and the electromagnetic valve, and the circulating operation step is as follows: aeration, stirring and standing to realize the local control of the JBR equipment. The JBR equipment of this scheme adopts the aeration agitated vessel of water pump + ejector, compares with traditional fan + aeration dish + agitator, and efficiency is higher, and ejector required precision is high, and the ejector both can the aeration oxygen suppliment can stir again, and the anaerobic zone of conventional equipment needs to increase the agitator in addition.
Preferably, the running time of the time length A, B and C is 3:2:1, and the running time is 3:2:1 as compared with the conventional running time, and of course, the skilled person can also adjust the running time according to the actual water quality standard requirements of inlet and outlet water. If the hydraulic retention time of the reaction zone is 9 hours, the aeration time, the stirring time and the retention time are respectively 4.5 hours, 3 hours and 1.5 hours.
The control mode of the tubular sewage treatment equipment provided by the embodiment of the invention is provided with a time sequence circulation control circuit, and the time sequence circulation control circuit comprises: a first time relay KT1, a second time relay KT2, a third time relay KT2, a first intermediate relay KA1 of a submersible pump and a second intermediate relay KA2 of an electromagnetic valve; a schematic diagram of which can be seen with reference to fig. 3;
the contact of the first time relay KT1 is connected in series with the first intermediate relay KA1, the contact of the second time relay KT2 is connected in series with the second intermediate relay KA2, and the contact of the third time relay KT2 is connected in series with the first time relay KT 1. The PLC realizes automatic control, has higher price and needs to be maintained by the cooperation of a PLC supplier; the scheme adopts the time sequence cycle control realized by the time relay, is flexible and convenient, has lower price and can be maintained by a field engineer.
Further, the timing cycle control circuit includes: the first path, the second path, the third path and the fourth path are connected in parallel between the KC end and the N end;
the first path comprises: a normally closed time delay contact of a third time relay KT3 and a first time relay KT1 which are connected in series;
the second path includes: a first normally closed time delay contact of a first time relay KT1 and a first intermediate relay KA1 of a submersible pump II; a KC end of a first normally closed delay contact of the first time relay KT1 is connected with a KC end of the time sequence circulation control circuit;
the third path includes: a second normally closed time delay contact of the first time relay KT1 and a second time relay KT2 which are connected in series;
the fourth way includes: a normally open time delay contact of a first time relay KT1 and a third time relay KT3 which are connected in series;
the timing cycle control circuit further comprises: a fifth path; the fifth path includes: a normally closed time delay contact of a second time relay KT2 and a second intermediate relay KA2 of the electromagnetic valve which are connected in series; one end of the fifth path is connected between the first normally closed time delay contact of the first time relay KT1 of the second path and the first intermediate relay KA1, and the other end is connected to the N end of the time sequence circulation control circuit.
Preferably, the set time of the first time relay KT1 is a + B, the set time of the second time relay KT2 is a, and the set time of the third time relay KT3 is C. If the hydraulic retention time of the reaction zone is 9h, the set time of the first time relay KT1 is 7.5h, the set time of the second time relay KT2 is 4.5h, and the set time of the third time relay KT3 is 1.5 h.
Specifically, in step S1, the submersible pump and the electromagnetic valve are simultaneously turned on for a time period a, and then the normally closed electric shock of the second time relay KT2 in the fifth path is turned off, so that the second intermediate relay KA2 is short-circuited, thereby closing the electromagnetic valve;
in step S2, after the solenoid valve is closed, the time is B, then the first normally closed time delay contact of the first time relay KT1 in the second path is opened, so that the first intermediate relay KA1 is short-circuited, and the submersible pump is turned off; a second normally-closed time delay contact of the first time relay KT1 in the fourth path is opened, so that the second time relay KT2 is short-circuited; a normally open time delay contact of a first time relay KT1 in the fifth path is closed, so that a third time relay KT3 is electrified;
in step S3, the submersible pump and the electromagnetic valve are turned off simultaneously for a time period C, and then the normally closed delay contact of the third time relay KT3 in the first path is turned off, so that the first time relay KT1 is short-circuited.
The control method of the tubular sewage treatment equipment provided by the embodiment of the invention further comprises the following steps before the step S1:
s0: acquiring a command for controlling mode selection, and selecting a control mode according to the command: the control method comprises the following steps of field control, PLC local control, PLC remote control or sequential cycle control.
The present solution is further described below with reference to specific embodiments:
a tubular structure device for sewage treatment adopts a JBR (Jet-aeration Biomembrane Reactor) process, is called as a Jet aeration Biomembrane Reactor, and is a new sewage treatment process integrating an activated sludge process and a Biomembrane process. And (3) operating and circulating steps in the JBR equipment: aeration-stirring-standing, the running time of the aeration-stirring-standing method is 3:2:1 compared with the conventional method, and the aeration-stirring-standing method can be correspondingly adjusted according to the actual water quality standard requirements of inlet and outlet water.
The invention not only sets on-site control and local control and remote control completed by PLC, but also sets a time sequence cycle control mode built by time relay combination according to the operation cycle process of JBR equipment for users to select.
The automatic control realized by PLC, degree of automation is high, easily expands, and the price is higher, needs PLC supplier cooperation to maintain. The time sequence cyclic control realized by the time relay is flexible and convenient, has low price and can be maintained by a field engineer.
Establishment code 148-2010 twenty-fourth regulation in the Small town Sewage treatment engineering construction Standard: controlling the production process of sewage treatment plants, wherein the I-III sewage treatment plants mainly adopt centralized manual control and the units are automatically controlled as assistance; the IV sewage treatment plant is preferably controlled in a decentralized and local manner. All power equipment should have field manual operation conditions. The invention is suitable for IV type sewage treatment plants.
The process operation circulation step: aeration-stirring-standing.
(1) Aeration: the submersible pump is started and the electromagnetic valve is opened.
(2) Stirring: submersible pump on + solenoid valve off.
(3) Standing: submersible pump off + solenoid valve off.
The control process comprises the following steps:
the control process adopted by the invention is as follows: the submersible pump and the electromagnetic valve are opened for 4.5 hours simultaneously to complete the aeration process; closing the electromagnetic valve for 3 hours to complete the stirring process; and simultaneously closing the submersible pump and the electromagnetic valve for 1.5 hours to finish the static process. Then simultaneously starting the submersible pump and the electromagnetic valve for 4.5 hours, and entering the next circulation process.
In conclusion, the invention provides a flexible and simple control mode for users to select in combination with a tubular structure equipment process for treating sewage, and has the advantages of low manufacturing cost and easy maintenance. The invention is based on the operation cycle steps in JBR equipment: aeration-stirring-standing, the running time of the aeration-stirring-standing method is 3:2:1 compared with the conventional method, and the aeration-stirring-standing method can be correspondingly adjusted according to the actual water quality standard requirements of inlet and outlet water. If the hydraulic retention time of the reaction zone is 9 hours, the aeration time, the stirring time and the retention time are respectively 4.5 hours, 3 hours and 1.5 hours. The JBR equipment is controlled on site by utilizing the time matching arrangement, is a highly integrated sewage treatment integrated structure, is simple to operate, easy to maintain and low in price, and is suitable for small sewage treatment units.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A control mode of a tubular sewage treatment device is characterized by comprising the following steps:
s1, simultaneously starting the submersible pump (II) and the electromagnetic valve for the duration of A, and then entering the step S2; the submersible pump (II) is connected with the jet device (I) and is arranged in the biological reaction zone (I) of the tubular sewage treatment equipment; the electromagnetic valve is arranged on a water inlet pipe (1) of the biological reaction zone (I);
s2, closing the electromagnetic valve for a time length B, and then entering the step S3;
s3, closing the submersible pump (II) and the electromagnetic valve at the same time for the duration of C, and then entering the step S1.
2. The tubular sewage treatment apparatus control mode according to claim 1, wherein the time period A: B: C: 3:2: 1.
3. The control mode of the tubular sewage treatment apparatus according to claim 1, wherein the time period A is 4.5 hours, the time period B is 3 hours, and the time period C is 1.5 hours.
4. The tubular sewage treatment apparatus of claim 1, wherein a sequential cycle control circuit is provided, the sequential cycle control circuit comprising: a first time relay (KT1), a second time relay (KT2), a third time relay (KT2), a first intermediate relay (KA1) of the submersible pump (②) and a second intermediate relay (KA2) of the electromagnetic valve;
the contact of first time relay (KT1) establish ties in first auxiliary relay (KA1), the contact of second time relay (KT2) establish ties in second auxiliary relay (KA2), the contact of third time relay (KT2) establish ties in first time relay (KT 1).
5. The tubular sewage treatment apparatus of claim 1, wherein a sequential cycle control circuit is provided, the sequential cycle control circuit comprising: the first path, the second path, the third path and the fourth path are connected in parallel between the KC end and the N end;
the first path comprises: a normally closed time delay contact of a third time relay (KT3) and a first time relay (KT1) which are connected in series;
the second path includes: a first normally closed time delay contact of a first time relay (KT1) and a first intermediate relay (KA1) of the submersible pump (②); the KC end of a first normally closed delay contact of the first time relay (KT1) is connected with the KC end of the time sequence circulation control circuit;
the third path includes: a second normally closed time delay contact of the first time relay (KT1) and a second time relay (KT2) which are connected in series;
the fourth path includes: a normally open time delay contact of a first time relay (KT1) and a third time relay (KT3) which are connected in series;
the timing cycle control circuit further comprises: a fifth path; the fifth path includes: a normally closed time delay contact of a second time relay (KT2) and a second intermediate relay (KA2) of the solenoid valve which are connected in series; one end of the fifth path is connected between a first normally closed time delay contact of a first time relay (KT1) of the second path and the first intermediate relay (KA1), and the other end of the fifth path is connected to the N end of the time sequence circulation control circuit.
6. A control mode of a tubular sewage treatment apparatus according to claim 5, characterized in that the set time of the first time relay (KT1) is A + B, the set time of the second time relay (KT2) is A, and the set time of the third time relay (KT3) is C.
7. The control manner of the tubular sewage treatment apparatus according to claim 6, wherein in the step S1, a submersible pump (②) and an electromagnetic valve are simultaneously opened for a time length of A, and then a normally closed electric shock of the second time relay (KT2) in the fifth path is opened to short-circuit the second intermediate relay (KA2) so as to close the electromagnetic valve;
in the step S2, after the electromagnetic valve is closed for a time length B, a first normally closed time delay contact of the first time relay (KT1) in the second path is opened, so that the first intermediate relay (KA1) is short-circuited, and the submersible pump (II) is closed; a second normally-closed time delay contact of the first time relay (KT1) in the fourth path is opened, so that the second time relay (KT2) is short-circuited; a normally open time delay contact of the first time relay (KT1) in the fifth path is closed, so that the third time relay (KT3) is electrified;
in the step S3, the submersible pump (C) and the electromagnetic valve are turned off simultaneously for a time period C, and then the normally closed delay contact of the third time relay (KT3) in the first path is turned off, so that the first time relay (KT1) is short-circuited.
8. The control method of a tubular sewage treatment apparatus according to claim 1, further comprising, before step S1, the steps of:
s0: acquiring a command for controlling mode selection, and selecting a control mode according to the command: the control method comprises the following steps of field control, PLC local control, PLC remote control or sequential cycle control.
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| CN202111055007.XA CN113666482A (en) | 2021-09-09 | 2021-09-09 | Control mode of tubular sewage treatment equipment |
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| CN202111055007.XA CN113666482A (en) | 2021-09-09 | 2021-09-09 | Control mode of tubular sewage treatment equipment |
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2021
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Application publication date: 20211119 |