CN215828429U - Alkaline medicament and acidic medicament control system for sewage pretreatment - Google Patents
Alkaline medicament and acidic medicament control system for sewage pretreatment Download PDFInfo
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- CN215828429U CN215828429U CN202121400228.1U CN202121400228U CN215828429U CN 215828429 U CN215828429 U CN 215828429U CN 202121400228 U CN202121400228 U CN 202121400228U CN 215828429 U CN215828429 U CN 215828429U
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Abstract
The utility model relates to a sewage pretreatment alkaline medicament and a sewage pretreatment acidic medicament control system, wherein the sewage pretreatment alkaline medicament comprises: a pH meter; an electromagnetic valve; the electromagnetic valve relay is used for controlling the working state of the electromagnetic valve; the metering diaphragm pump delay relay is used for controlling the working state of the metering diaphragm pump; and one of the two parallel control circuits is used for communicating the PH instrument with the metering diaphragm pump delay relay and the metering diaphragm pump, and the other is used for communicating the PH instrument with the electromagnetic valve relay and the electromagnetic valve. The basic structure and the working principle of the latter are the same as those of the former, except that the PH meter probe of the latter is used for monitoring the PH value of the sewage in the lift pump in real time, and the PH meter probe of the former is used for monitoring the PH value of the sewage in the sedimentation tank in real time. The utility model can effectively prevent the abnormal loss of the medicament, save the sewage pretreatment cost and facilitate the subsequent treatment of the sewage.
Description
Technical Field
The utility model belongs to subsystems of a sewage treatment system, and particularly relates to a sewage pretreatment alkaline medicament control system and a sewage pretreatment acidic medicament control system.
Background
At present, in the process of sewage treatment, pretreatment is generally performed, that is, an alkaline agent (such as caustic soda) or an acidic agent (such as sulfuric acid) is added into sewage (commonly called raw water) to adjust the PH value of the sewage, so that the PH value of the sewage reaches the process requirement, and then other agents are added for subsequent treatment. Taking a sewage treatment system in the prior art as an example, the sewage treatment system is provided with devices or components such as an alkaline agent adding device (caustic soda storage tank), a metering diaphragm pump, a dosing pipeline, a PH meter and the like. When the PH instrument detects that sewage is acidic and needs to be added with alkaline medicament, alkaline medicament adding device accessible measurement diaphragm pump (add the medicine diaphragm pump) and add the pipeline and inject alkaline medicament into the pipeline mixer in sewage conveying pipeline (the pipeline of intercommunication sewage holding vessel and sedimentation tank), again along with rivers enter into sedimentation tank (pipe chute sedimentation tank) to adjust the PH value of raw water.
The technical scheme solves the problem of adjusting the pH value of the acidic sewage, but also has the technical defect of abnormal consumption of alkaline medicaments, and the reasons are as follows: the medicine injection mouth is close to the elevator pump exit of sewage collection tank (former water pitcher), and the test probe of PH instrument is in the first order department of the water inlet of sedimentation tank, and sewage delivery pipeline is longer between the two, and the medicine pipeline only has a check valve to protect, prevents that sewage from flowing backward but the cisoid is switched on. Because of the reason in place, the overhead three-dimensional installation of alkaline medicament adding device, alkaline medicament adding device and pipeline, sedimentation tank are not on same horizontal plane promptly, this just makes when not working with medicine diaphragm pump, and alkaline medicament also can enter into the sewer line under the effect of drop and gravity to lead to the unusual consumption of alkaline medicament, not only extravagant alkaline medicament, also can influence subsequent processing because of the PH value of sewage risees in addition.
It should be noted that, based on similar technical defects, the prior art also has the problem of abnormal consumption of the acidic reagent in the pretreatment of the alkaline wastewater, i.e., the technical scheme of adjusting the PH of the alkaline wastewater by adding the acidic reagent.
Disclosure of Invention
One of the purposes of the utility model is to overcome the defect of abnormal consumption of alkaline agents in the prior art, completely cut off a dosing pipeline and prevent the wrong addition of the alkaline agents when the subsequently treated sewage reaches the PH value required by the process, and the purpose is realized by the following technical scheme:
a wastewater pretreatment alkaline agent control system comprising the following devices or components:
the PH instrument is arranged beside the sedimentation tank and is provided with a PH instrument probe, and the PH value of the sewage in the sedimentation tank can be monitored in real time through the PH instrument probe;
the electromagnetic valve is arranged on a dosing pipeline at the outlet of the metering diaphragm pump and is used for opening or closing the dosing pipeline;
the electromagnetic valve relay is electrically connected with the electromagnetic valve and is used for controlling the opening and closing of the electromagnetic valve;
the metering diaphragm pump delay relay is electrically connected with the metering diaphragm pump and is used for controlling the working state of the metering diaphragm pump;
and one of the two parallel control circuits is used for communicating the PH meter with the time delay relay of the metering diaphragm pump, and the other is used for communicating the PH meter with the electromagnetic valve relay.
On the basis of the technical scheme, the utility model can be additionally provided with the following technical means so as to better realize the aim of the utility model:
the electromagnetic valve is an electric ball valve.
Further, the solenoid valve is a pneumatic ball valve.
The second purpose of the utility model is to overcome the defect of abnormal consumption of the acid medicament in the prior art, completely cut off the dosing pipeline and prevent the wrong addition of the acid medicament when the subsequently treated sewage reaches the PH value required by the process, and the second purpose is realized by the following technical scheme:
a wastewater pretreatment acidic agent control system comprising the following devices or components:
the PH meter is arranged beside the lift pump and is provided with a PH meter probe, and the PH value of the sewage discharged by the lift pump can be monitored in real time through the PH meter probe;
the electromagnetic valve is arranged on a dosing pipeline at the outlet of the metering diaphragm pump and is used for opening or closing the dosing pipeline;
the electromagnetic valve relay is electrically connected with the electromagnetic valve and is used for controlling the opening and closing of the electromagnetic valve;
the metering diaphragm pump delay relay is electrically connected with the metering diaphragm pump and is used for controlling the working state of the metering diaphragm pump;
and one of the two parallel control circuits is used for communicating the PH meter with the time delay relay of the metering diaphragm pump, and the other is used for communicating the PH meter with the electromagnetic valve relay.
Further, the electromagnetic valve is an electric ball valve or a pneumatic ball valve.
The utility model has the following beneficial effects:
through the arrangement of the two control circuits and other control components, the alkaline or acidic agent addition control device can accurately control the addition of the alkaline or acidic agent, so that the pH value of the sewage is more stable, the excessive high or low pH value of the sewage caused by excessive addition of the alkaline or acidic agent is effectively avoided, the abnormal loss of the agent is prevented, the sewage pretreatment cost is saved, and the subsequent treatment of the sewage is facilitated.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure:
1-a lift pump; 2-a PH meter; 201-PH meter probe;
3-metering diaphragm pump delay relay; 4-electromagnetic valve relay;
5-metering diaphragm pump; 6, an electromagnetic valve; 7-pipeline mixer;
8-alkaline agent addition means; 9-raw water tank; 10-a sedimentation tank; 11-dosing pipeline;
12-acid medicament adding device.
Detailed Description
In order to facilitate a better understanding of the technical solutions of the present invention and the working principles thereof by those skilled in the art, two embodiments of the present invention are described below with reference to the accompanying drawings:
example 1
As shown in fig. 1, a sewage pretreatment alkaline chemical control system comprises the following devices or components:
the PH instrument 2 is arranged beside the sedimentation tank 10 and is provided with a PH instrument probe 201, and the PH value of the sewage in the sedimentation tank 10 can be monitored in real time through the PH instrument probe 201;
the electromagnetic valve 6 is arranged on a dosing pipeline 11 at the outlet of the metering diaphragm pump 5 and is used for opening or closing the dosing pipeline 11; in the present embodiment, the solenoid valve 6 is preferably an electric ball valve or a pneumatic ball valve;
the electromagnetic valve relay 4 is electrically connected with the electromagnetic valve 6 and is used for controlling the opening and closing of the electromagnetic valve 6;
the metering diaphragm pump delay relay 3 is electrically connected with the metering diaphragm pump 5 and is used for controlling the working state of the metering diaphragm pump 5, namely, the metering diaphragm pump 5 works or stops working;
the control circuit is provided with two parallel control circuits in the embodiment, one control circuit communicates the PH instrument 2 with the metering diaphragm pump delay relay 3, and the other control circuit communicates the PH instrument 2 with the solenoid valve relay 4.
The structural features of an embodiment of the present invention are described above with reference to the accompanying drawings, and the working principle thereof is further described below:
as shown in fig. 1, when the sewage in the raw water tank 9 of the sewage treatment system is at a high level, the lift pump 1 automatically operates to transfer the sewage to the water inlet end of the sedimentation tank 10, and the PH meter probe 201 monitors the PH value of the sewage entering the sedimentation tank 10 in real time.
When the PH meter probe 201 detects that the PH value of the sewage in the sedimentation tank 10 is lower than a set value (the specific numerical value of the set value is determined according to the specific requirements of the subsequent treatment process), the PH meter simultaneously outputs a switching signal to the metering diaphragm pump delay relay 3 and the solenoid valve relay 4, the solenoid valve relay 4 controls the solenoid valve 6 to be opened after receiving the switching signal, the dosing pipeline 11 is conducted, the metering diaphragm pump delay relay 3 delays for one second after receiving the switching signal and then starts the metering diaphragm pump 5, and an alkaline medicament (such as caustic soda) in the alkaline medicament adding device 8 is added into the pipeline mixer 7. After entering the pipeline mixer 7, the alkaline agent is mixed with the sewage flowing out of the raw water tank 9 under the action of water flow and then is conveyed into the sedimentation tank 10.
When the PH instrument probe 201 detects that the PH value of the sewage in the sedimentation tank 10 is higher than the set value, the PH instrument simultaneously outputs a switch signal to the metering diaphragm pump delay relay 3 and the solenoid valve relay 4, the solenoid valve relay 4 receives the switch signal and then controls the closing of the solenoid valve 6, so that the dosing pipeline is stopped, the metering diaphragm pump 5 is closed after the metering diaphragm pump delay relay 3 receives the switch signal, and the dosing is stopped.
Example 2
As shown in fig. 2, a sewage pretreatment acidic reagent control system comprises the following devices or components:
the PH meter 2 is arranged beside the lift pump 1 and is provided with a PH meter probe 201, and the PH value of sewage discharged by the lift pump 1 can be monitored in real time through the PH meter probe 201;
the electromagnetic valve 6 is arranged on a dosing pipeline 11 at the outlet of the metering diaphragm pump 5 and is used for opening or closing the dosing pipeline 11; in the present embodiment, the solenoid valve 6 is also preferably an electric ball valve or a pneumatic ball valve;
the electromagnetic valve relay 4 is electrically connected with the electromagnetic valve 6 and is used for controlling the opening and closing of the electromagnetic valve 6;
the metering diaphragm pump delay relay 3 is electrically connected with the metering diaphragm pump 5 and is used for controlling the working state of the metering diaphragm pump 5, namely, the metering diaphragm pump 5 works or stops working;
the control circuit is provided with two parallel control circuits in the embodiment, one control circuit communicates the PH instrument 2 with the metering diaphragm pump delay relay 3, and the other control circuit communicates the PH instrument 2 with the solenoid valve relay 4.
In general, the technical concept and operation principle of embodiment 2 are substantially the same as those of embodiment 1, except that in embodiment 2, the PH meter 2 is used not to monitor the PH of the sewage in the sedimentation tank 10 in real time, but to monitor the PH of the sewage discharged from the lift pump 1 in real time. When the PH value of the sewage discharged by the lift pump 1 is higher than a set value (the specific value of the set value is determined according to the specific requirements of the subsequent treatment process), the PH meter simultaneously outputs a switch signal to the metering diaphragm pump delay relay 3 and the solenoid valve relay 4, the solenoid valve relay 4 receives the switch signal and then controls the solenoid valve 6 to be opened, the dosing pipeline 11 is switched on, the metering diaphragm pump delay relay 3 delays for one second after receiving the switch signal and then starts the metering diaphragm pump 5, and an acidic medicament (such as sulfuric acid) in the acidic medicament adding device 12 is added into the pipeline mixer 7. After entering the pipeline mixer 7, the acidic reagent is mixed with the sewage flowing out of the raw water tank 9 under the action of water flow and then is conveyed into the sedimentation tank 10.
Claims (5)
1. A wastewater pretreatment alkaline agent control system, comprising the following devices or components:
the PH instrument is arranged beside the sedimentation tank and is provided with a PH instrument probe, and the PH value of the sewage in the sedimentation tank can be monitored in real time through the PH instrument probe;
the electromagnetic valve is arranged on a dosing pipeline at the outlet of the metering diaphragm pump and is used for opening or closing the dosing pipeline;
the electromagnetic valve relay is electrically connected with the electromagnetic valve and is used for controlling the opening and closing of the electromagnetic valve;
the metering diaphragm pump delay relay is electrically connected with the metering diaphragm pump and is used for controlling the working state of the metering diaphragm pump;
and one of the two parallel control circuits is used for communicating the PH meter with the time delay relay of the metering diaphragm pump, and the other is used for communicating the PH meter with the electromagnetic valve relay.
2. The wastewater pretreatment alkaline agent control system of claim 1, wherein: the electromagnetic valve is an electric ball valve.
3. The wastewater pretreatment alkaline agent control system of claim 1, wherein: the solenoid valve is a pneumatic ball valve.
4. A sewage pretreatment acidic reagent control system is characterized by comprising the following devices or components:
the PH meter is arranged beside the lift pump and is provided with a PH meter probe, and the PH value of the sewage discharged by the lift pump can be monitored in real time through the PH meter probe;
the electromagnetic valve is arranged on a dosing pipeline at the outlet of the metering diaphragm pump and is used for opening or closing the dosing pipeline;
the electromagnetic valve relay is electrically connected with the electromagnetic valve and is used for controlling the opening and closing of the electromagnetic valve;
the metering diaphragm pump delay relay is electrically connected with the metering diaphragm pump and is used for controlling the working state of the metering diaphragm pump;
and one of the two parallel control circuits is used for communicating the PH meter with the time delay relay of the metering diaphragm pump, and the other is used for communicating the PH meter with the electromagnetic valve relay.
5. The wastewater pretreatment acidic reagent control system of claim 4, wherein: the electromagnetic valve is an electric ball valve or a pneumatic ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121400228.1U CN215828429U (en) | 2021-06-23 | 2021-06-23 | Alkaline medicament and acidic medicament control system for sewage pretreatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121400228.1U CN215828429U (en) | 2021-06-23 | 2021-06-23 | Alkaline medicament and acidic medicament control system for sewage pretreatment |
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| Publication Number | Publication Date |
|---|---|
| CN215828429U true CN215828429U (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121400228.1U Active CN215828429U (en) | 2021-06-23 | 2021-06-23 | Alkaline medicament and acidic medicament control system for sewage pretreatment |
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| CN (1) | CN215828429U (en) |
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2021
- 2021-06-23 CN CN202121400228.1U patent/CN215828429U/en active Active
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