WO2022120887A1

WO2022120887A1 - Automatic control device of sewage treatment system

Info

Publication number: WO2022120887A1
Application number: PCT/CN2020/136432
Authority: WO
Inventors: 谈秀华
Original assignee: 江苏诚品电气有限公司
Priority date: 2020-12-08
Filing date: 2020-12-15
Publication date: 2022-06-16
Also published as: CN112408654A

Abstract

Disclosed is an automatic control device of a sewage treatment system, comprising a control unit which is provided with a data input interface and a data output interface; a data acquisition unit and an execution unit are electrically connected to the data input interface and the data output interface, respectively; the control unit comprises a main controller and a database module; the main controller is electrically connected to the data input interface and used for receiving real-time working parameters and transmitting the parameters to the database module; the database module is electrically connected to the data output interface; and process data is stored in the database module, and the database module is used for comparing the real-time working parameters with the process data and controlling an execution module to work. The data acquisition unit of the present invention acquires real-time working parameters of a sewage treatment system and transmits the parameters to the control unit; the main controller receives and processes the real-time working parameters and then transmits same to the database module; and the database module compares the real-time working parameters with the process data to control the execution unit to work. Therefore, automatic control is achieved, and efficient sewage treatment requirements are met.

Description

An automatic control device for a sewage treatment system

technical field

The invention relates to the technical field of sewage treatment, in particular to an automatic control device of a sewage treatment system.

Background technique

With the development of economy and the influence of urbanization process, my country's urban sewage treatment industry has entered a period of rapid development. As a municipal basic industry, urban sewage treatment has first achieved considerable development. However, various localities only focus on the construction of the number of urban sewage treatment plants and do not pay attention to the construction of energy saving and technological platform improvement.

The existing sewage treatment system also uses manual data collection, and separate management and control of the sewage treatment system through equipment and instruments. This control method has high labor costs, and the control process is seriously lagging behind. It is impossible to specify a more optimal control strategy in combination with the specific process, and it cannot meet the needs of more efficient sewage treatment, which affects the efficiency of sewage treatment.

Therefore, it is necessary to develop a new type of sewage treatment control device.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an automatic control device for a sewage treatment system, so as to solve the problem that the automatic control system of sewage treatment in the prior art can only realize simple switch quantity control through data acquisition, and cannot specify a more optimized control system in combination with a specific process. Therefore, it cannot meet the needs of more efficient sewage treatment, and it is a technical problem that affects the efficiency of sewage treatment.

In order to achieve the above object, the technical scheme of the present invention is:

An automatic control device for a sewage treatment system, comprising a control unit, a data acquisition unit and an execution unit, the control unit is provided with a data input interface and a data output interface, the data acquisition unit and the execution unit are respectively connected with the data input interface It is electrically connected to the data output interface, the control unit includes a main controller and a database module that are electrically connected, and the main controller is electrically connected to the data input interface for accepting real-time working parameters and processing the real-time working parameters. To the database module, the database module is electrically connected with the data output interface, and process data is stored in the database module, and the database module is used for comparing real-time working parameters and process data and controlling the operation of the execution module.

Compared with the prior art, the beneficial effects of the present invention are:

The data acquisition unit of the present invention collects the real-time working parameters of the sewage treatment system and transmits them to the control unit. The main controller receives and processes the real-time working parameters and transmits them to the database module. The database module compares the real-time working parameters with the stored process data, thereby The work of the execution unit is controlled by the data output interface, thereby realizing the automatic control of the sewage treatment system. The working parameters collected in real time and the execution unit working in real time form a closed loop, which can meet the needs of efficient sewage treatment and significantly improve the efficiency of sewage treatment.

On the basis of above-mentioned technical scheme, the present invention can also do following improvement:

Further, the data acquisition unit includes a DO meter, a sewage flow meter and a return flow meter, and the DO meter, the sewage flow meter and the return flow meter are respectively electrically connected to corresponding data input interfaces of the control unit.

By adopting the above scheme, DO meter, sewage flow meter and return flow meter detect the oxygen content, flow rate and return flow rate of sewage respectively, and transmit the data to the main controller.

Further, the execution unit includes an aeration fan, a dosing pump and a sewage return pump, and the aeration fan, the dosing pump and the sewage return pump are respectively electrically connected to corresponding data output interfaces of the control unit.

By adopting the above scheme, the main controller receives the oxygen content, flow and return flow data of sewage and sends it to the database module for comparison. In order to ensure that the sewage treatment parameters match the process parameters and ensure the sewage treatment effect.

Further, it also includes a human-computer interaction unit, the human-computer interaction unit is electrically connected with the main controller, and the human-computer interaction module is used for accepting and displaying real-time working parameters processed by the main controller.

By adopting the above scheme, the human-computer interaction module displays real-time working parameters, which is convenient for operators to monitor in real time.

Further, the human-computer interaction unit has a built-in alarm.

By adopting the above scheme, when the implementation working parameters received by the human-computer interaction module exceed the preset value, the alarm is controlled to give an alarm, so that the operator can take corresponding measures in time to ensure the normal operation of the sewage treatment system.

Further, the control unit is a PLC control unit.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the specific embodiments or the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. In the drawings, each element or section is not necessarily drawn to actual scale.

FIG. 1 is a system block diagram of an embodiment of the present invention.

Shown in the picture:

1. Control unit; 101, data input interface; 102, data output interface; 103, main controller; 104, database module; 105,

2. Data acquisition unit; 201, DO meter; 202, sewage flow meter; 203, return flow meter;

3. Execution unit; 301, aeration fan; 302, dosing pump; 303, sewage return pump;

4. Human-computer interaction unit; 401. Alarm.

Detailed ways

Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the usual meanings understood by those skilled in the art to which the present invention belongs.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

As shown in FIG. 1 , an automatic control device for a sewage treatment system provided in this embodiment includes a control unit 1 , a data acquisition unit 2 and an execution unit 3 .

The control unit 1 is the PLC control unit 1, and the specific model is FX2N-80MT-D. The control unit 1 is provided with a data input interface 101 and a data output interface 102 , and internally includes a main controller 103 and a database module 104 that are electrically connected.

The data acquisition unit 2 is electrically connected to the data input interface 101 to collect and transmit real-time working parameters, and the execution unit 3 is electrically connected to the data output interface 102 to receive and execute operations.

The main controller 103 is electrically connected to the data input interface 101 for accepting real-time working parameters, and processing the real-time working parameters and transmitting them to the database module 104. The database module 104 is electrically connected to the data output interface 102, and the database module 104 stores a process Data, the database module 104 is used to compare real-time operating parameters and process data and control the execution of the module work.

Specifically, the data acquisition unit 2 includes a DO meter 201 , a sewage flow meter 202 and a return flow meter 203 . The DO meter 201 , the sewage flow meter 202 and the return flow meter 203 are respectively electrically connected to the corresponding data input interface 101 of the control unit 1 .

The DO meter 201 , the sewage flow meter 202 and the return flow meter 203 respectively detect the oxygen content, flow rate and return flow rate of the sewage, and transmit the data to the main controller 103 .

The execution unit 3 includes an aeration fan 301 , a dosing pump 302 and a sewage return pump 303 .

The main controller 103 receives the oxygen content, flow rate and return flow data of the sewage and sends it to the database module 104 for comparison. Work to ensure that the sewage treatment parameters match the process parameters and ensure the sewage treatment effect.

The specific model of the DO meter 201 is MIK-DY2900 fluorescent dissolved oxygen meter, and the specific models of the sewage flow meter 202 and the reflux flow meter 203 are SG-NZ-KD1. The data acquisition unit 2 transmits the analog signal to the control unit 1, and then the database module 104 transmits the switch signal to the aeration fan 301, the dosing pump 302 and the sewage return pump 303 through the data output interface 102 after comparing the data to control the aeration The switches of the fan 301, the dosing pump 302 and the sewage return pump 303 are used to control the oxygen content, the dosing amount and the return flow of the sewage.

In this embodiment, the automatic control device further includes a human-computer interaction unit 4, which is electrically connected to the main controller 103, and is connected to the control unit 1 through an RS485 interface.

The human-computer interaction unit 4 is a computer, which is used to accept and display the real-time working parameters processed by the main controller 103, so as to facilitate real-time monitoring by operators.

The human-computer interaction unit 4 also has a built-in alarm 401, and the alarm 401 is an acousto-optic alarm. When the implementation working parameters received by the human-computer interaction module exceed the preset value, the alarm 401 is controlled to give an alarm, which is convenient for the operator to take corresponding measures in time. measures to ensure the normal operation of the sewage treatment system.

In this embodiment, the data acquisition unit 2 collects the real-time working parameters of the sewage treatment system and transmits them to the control unit 1. The main controller 103 receives and processes the real-time working parameters and transmits them to the database module 104. The database module 104 compares the real-time working parameters with the stored data. The process data is compared, so that the data output interface 102 controls the execution unit 3 to work, thereby realizing the automatic control of the sewage treatment system, and the real-time collected working parameters and the real-time working execution unit 3 form a closed loop, which can meet the needs of efficient sewage treatment, and significantly Improve sewage treatment efficiency.

In the description of the present invention, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. The scope of the invention should be included in the scope of the claims and description of the present invention.

Claims

An automatic control device for a sewage treatment system, characterized in that it includes a control unit, a data acquisition unit and an execution unit, the control unit is provided with a data input interface and a data output interface, and the data acquisition unit and the execution unit are respectively connected with the The data input interface and the data output interface are electrically connected, the control unit includes a main controller and a database module that are electrically connected, and the main controller is electrically connected to the data input interface for accepting real-time working parameters and performing real-time work. The parameters are processed and transmitted to the database module, the database module is electrically connected with the data output interface, and process data is stored in the database module, and the database module is used to compare real-time working parameters and process data and control the execution. Modules work.
The automatic control device of a sewage treatment system according to claim 1, wherein the data acquisition unit comprises a DO meter, a sewage flow meter and a return flow meter, and the DO meter, the sewage flow meter and the return flow meter are respectively associated with The corresponding data input interface of the control unit is electrically connected.
The automatic control device for a sewage treatment system according to claim 2, wherein the execution unit comprises an aeration fan, a chemical dosing pump and a sewage return pump, and the aeration fan, the chemical dosing pump and the sewage return pump are respectively It is electrically connected with the corresponding data output interface of the control unit.
The automatic control device for a sewage treatment system according to claim 1, further comprising a human-computer interaction unit, the human-computer interaction unit is electrically connected to the main controller, and the human-computer interaction module is used for receiving and Displays real-time operating parameters processed by the main controller.
The automatic control device for a sewage treatment system according to claim 4, wherein the human-computer interaction unit has a built-in alarm.
The automatic control device for a sewage treatment system according to any one of claims 1 to 5, wherein the control unit is a PLC control unit.