CN213475616U - Control system for pH value of raw water of water works and aluminum content of leaving water - Google Patents
Control system for pH value of raw water of water works and aluminum content of leaving water Download PDFInfo
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- CN213475616U CN213475616U CN202021874889.3U CN202021874889U CN213475616U CN 213475616 U CN213475616 U CN 213475616U CN 202021874889 U CN202021874889 U CN 202021874889U CN 213475616 U CN213475616 U CN 213475616U
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Abstract
The utility model provides a water works raw water pH value and delivery water aluminium content control system, put in device, water dart, liquid chlorine including raw water main, CO2 and put in device, raw water distributing well, air supporting pond, advection sedimentation tank and monitoring system, raw water main front end and reservoir intercommunication, the flow direction of raw water is for following the raw water main and reentrant the follow-up necessary production flow of water works through raw water distributing well flow direction advection sedimentation tank and air supporting pond, CO2 puts in device and liquid chlorine and puts in the device and pass through water dart and raw water main intercommunication. The utility model discloses a water dart puts in CO2 to former water main, and follow-up through mixing chlorine and PAFC, has reduced former water pH value and aluminium content, and former water main front end, and the former water main after putting in CO2 and chlorine is terminal, and air supporting pond department all is provided with the quality of water monitoring point with the end of dispatching from the factory, can the pH value and the aluminium content of this department of water of real-time supervision to the volume of putting in of control CO2 gas cylinder comes real-time control to dispatch from the factory water pH value and aluminium content.
Description
Technical Field
The utility model relates to a water quality treatment technical field especially relates to a water works raw water pH value and delivery water aluminium content control system.
Background
The pH value of raw water rises due to continuous high temperature in summer in the existing water plant, and the aluminum content of the leaving water rises under the phenomenon, so that the water quality is influenced. The same phenomenon occurs in other production units.
In order to guarantee the safety of water supply and solve the production problem, the inventor works for a plurality of times of experiments for years, the pearl oceans appear continuous high-temperature rain-less weather in 6-7 months in 2020, and the aluminum content of the water produced by part of water plants is increased. The experimental research shows that the CO is added2Can reduce the pH value of raw water and reduce the aluminum content of factory water.
There is a need for a water pH and aluminum content control system that can control the effluent of a water plant that addresses the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a water works raw water pH value and the water aluminium content control system that dispatches from factory through carrying out technical transformation to existing equipment, has solved present because of temperature variation, and the pH value of the play water of water works risees and aluminium content risees and influences the quality of water problem.
In order to solve the technical problem, the utility model discloses specifically adopt following technical scheme:
a system for controlling the pH value of raw water and the Al content of water from water plant is composed of a main water pipe, CO2The device comprises a feeding device, a water ejector, a liquid chlorine feeding device, a raw water distribution well, an air floatation tank, a horizontal sedimentation tank and a monitoring system, wherein the front end of a raw water main pipe is communicated with a reservoir, and the flow of raw waterThe CO flows to a horizontal flow sedimentation tank and an air floatation tank along a raw water main pipe through a raw water distributing well and then enters a subsequent necessary production flow of a water plant2The feeding device and the liquid chlorine feeding device are communicated with the raw water main pipe through a water ejector.
Preferably, the CO is2The delivery device comprises CO2Gas cylinder, connecting pipe and flow controller, the CO2The gas cylinder is connected with the water injector through a flow controller and a communication pipeline, and the flow controller can control CO2The gas outlet flow of the gas cylinder can prevent CO2The heat absorption causes the flow controller to freeze.
Preferably, the CO is2The throwing device and the water ejector are communicated with the rear end of the raw water main pipe, and the distance between the position of the water ejector and the horizontal flow sedimentation tank and the distance between the position of the water ejector and the air floatation tank are less than 20 meters.
Preferably, the CO is2The throwing device and the water ejector are communicated with the front end of the raw water main pipe, and the distance between the position of the water ejector and the horizontal flow sedimentation tank and the distance between the position of the water ejector and the air floatation tank are larger than 400 meters.
Preferably, the monitoring system comprises a detection device, and CO is put into the front end of the raw water main pipe2And the tail end of the chlorine-treated raw water main pipe, a first water quality monitoring point, a second water quality monitoring point, a third water quality monitoring point and a fourth water quality monitoring point are respectively arranged at the air floatation tank and the delivery end, the detection device is arranged at the first water quality monitoring point, the second water quality monitoring point, the third water quality monitoring point and the fourth water quality monitoring point, and a detection matched laboratory is further arranged. The detection matched laboratory contains the detection equipment, the reagent and the personnel involved in the experiment. The inspection method refers to the national Standard inspection method for Drinking Water (GB/T5750-2006).
Compared with the prior art, the utility model discloses following beneficial effect has:
the main reason for the increase of the aluminum content of the factory water is that in the production process caused by the increase of the pH value of raw water, macromolecule aluminum in the added flocculating agent is changed into micromolecule aluminum to be dissolved in water due to the increase of the pH value, so that the aluminum content of the factory water is increased, CO2 is put in the water production process to reduce the pH value of the raw water and reduce the aluminum content of the factory water.
1) The utility model discloses a water dart puts in CO to former water main2And the subsequent mixing of chlorine and PAFC reduces the pH value of the raw water and the aluminum content of the factory water.
2) The utility model puts in CO at the front end of the original water header pipe2The tail end of the chlorine-mixed raw water main pipe, the air floatation tank and the delivery end are respectively provided with a water quality monitoring point, the pH value and the aluminum content of water at the position can be monitored in real time, and therefore CO is controlled2The pH value and the aluminum content of the factory water are controlled in real time according to the adding amount of the gas cylinder.
Drawings
FIG. 1 shows the CO of the present invention2The throwing device and the water ejector are arranged to be communicated with the rear end of the raw water main pipe;
FIG. 2 shows CO2The throwing device and the water ejector are arranged to be communicated with the front end of the raw water main pipe;
FIG. 3 is a pH value variation trend graph, wherein a monitoring point 1 is a first water quality monitoring point, a monitoring point 2 is a second water quality monitoring point, a monitoring point 3 is a third water quality monitoring point, and a monitoring point 4 is a fourth water quality monitoring point;
FIG. 4 is a trend chart of the change of the aluminum content of the leaving water, and a monitoring point 4 is a fourth water quality monitoring point;
description of reference numerals: raw water main 1, CO2The system comprises a feeding device 2, a water ejector 3, a liquid chlorine feeding device 4, a raw water distribution well 5, an air flotation tank 6, a horizontal flow sedimentation tank 7, a monitoring system 8, a first water quality monitoring point 81, a second water quality monitoring point 82 and a third water quality monitoring point 83.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings and examples.
As shown in fig. 1-4, the present embodiment provides a system for controlling pH value of raw water and aluminum content of leaving water from a waterworks, comprising a raw water main pipe 1, a CO2 feeding device 2, a water injector 3, a liquid chlorine feeding device 4, a raw water distributing well 5, an air flotation tank 6, a horizontal sedimentation tank 7 and a monitoring system 8, wherein the front end of the raw water main pipe 1 is communicated with a reservoir, and the raw water flows along the raw water main pipe 1 through the raw water distributing well 5 to the horizontal sedimentation tank 7 and the air flotation tank 6 to enter the waterSubsequent necessary production flow of the plant, the CO2The feeding device 2 and the liquid chlorine feeding device 4 are communicated with the raw water main pipe 1 through a water ejector 3.
Further, the CO is2The feeding device 2 comprises CO2Gas cylinder, connecting pipe and flow controller, the CO2The gas cylinder is connected with the water ejector 3 through a flow controller and a communicating pipeline, and the flow controller can control CO2The gas outlet flow of the gas cylinder can prevent CO2The heat absorption from vaporization causes the flow controller to freeze.
Example 1: the CO is2The throwing device 2 and the water ejector 3 are communicated with the rear end of the raw water main pipe 1, and the distance between the position of the water ejector 3 and the horizontal flow sedimentation tank 7 and the distance between the position of the water ejector 3 and the air floatation tank 6 are less than 20 meters.
Further, the monitoring system comprises a detection device, and CO is put into the front end of the raw water main pipe 12And the tail end of the raw water main pipe 1 after the chlorine treatment, a first water quality monitoring point 81, a second water quality monitoring point 82, a third water quality monitoring point 83 and a fourth water quality monitoring point are respectively arranged at the position of the air floatation tank 6 and the delivery end, the detection device is arranged at the first water quality monitoring point 81, the second water quality monitoring point 82, the third water quality monitoring point 83 and the fourth water quality monitoring point, and a detection matched laboratory is further arranged. The detection matched laboratory contains the detection equipment, the reagent and the personnel involved in the experiment. The inspection method refers to the national Standard inspection method for Drinking Water (GB/T5750-2006).
The addition was started at 11 am and 30 am, the experiment was performed on three monitoring points once per hour, the pH was checked, and the results are shown in table 1:
TABLE 1 CO2And (3) adding an experimental result:
wherein the monitoring point 1 is a first water quality monitoring point, the monitoring point 2 is a second water quality monitoring point, and the monitoring point 3 is a third water quality monitoring point.
As a result of the experiment shown in Table 1, CO2Feeding device and water ejector device andwhen the rear end of the raw water main pipe is communicated, the second monitoring point compares the result of the first monitoring point, and the pH value is averagely reduced by 0.16. The results are not sufficiently obvious. The analysis reason is as follows: CO22The feeding device and the water ejector are communicated with the rear end of the raw water main pipe, and CO is2The contact time with water is too short, only a dozen seconds. CO22Not completely dissolved in water, most of which escapes into the air, with insignificant results. So that subsequent experiments utilized CO2The feeding device and the water ejector are communicated with the front end of the raw water main pipe, and CO is2The residence time in the pipeline can reach about 5 minutes.
Example 2: the CO is2The throwing device 2 and the water ejector 3 are communicated with the front end of the raw water main pipe 1, and the distance between the position of the water ejector 3 and the horizontal flow sedimentation tank 7 and the distance between the position of the water ejector 3 and the air floatation tank 6 are more than 400 meters.
The test is carried out at 8 am and 9 am respectively, and CO is not added during the two sampling2. Beginning 6 bottles of CO at 9 am 50 minutes2And simultaneously adding the raw materials. And continuously sampling 10 points, 11 points, 12 points and 13 points. When sampling is carried out at 13 points, two bottles of gas in six bottles are used up, and when sampling is carried out at 14 points, 4 bottles of gas in six bottles are used up, so that the feeding is stopped at 14 points. The experimental results are shown in Table 2, a pH value change trend chart is shown in figure 3, and a leaving water aluminum content change trend chart is shown in figure 4;
table 2: CO22And (3) adding an experimental result:
wherein the monitoring point 1 is a first water quality monitoring point, the monitoring point 2 is a second water quality monitoring point, the monitoring point 3 is a third water quality monitoring point, and the monitoring point 4 is a fourth water quality monitoring point.
The position of the water ejector is advanced to the position 400 meters outside the enclosure wall of the water plant, and CO is generated2Adding into a raw water main pipe, and adding CO2The contact time with raw water is increased to about 5 minutes, and CO is reduced2The dissipation degree of (2) improves the CO2The utilization ratio of (2). From the above experimental results, the pH value of the raw water has little fluctuation from 8 to 16, the addition is started at 10, and the monitoring points 2 and 3 are from 11 to 13The pH value is obviously reduced, 2 bottles in 6 bottles are completely added at 13, the adding is stopped at 14, and the pH values of monitoring points 2 and 3 are obviously increased from 13 to 16. From monitoring point 2, the maximum decrease of the raw water pH is 0.54. The time lag phenomenon from the raw water to the factory water is caused, and the aluminum content of the factory water is greatly reduced at 12 hours. The aluminum content and the pH value of the leaving water are in a continuous descending trend, and CO is added2The aluminum content of the post-factory water is reduced by 0.096mg/L to the maximum extent, and the maximum reduction amplitude reaches 56%.
The main reason for the increase of the aluminum content of the factory water is that in the production process caused by the increase of the pH value of raw water, macromolecule aluminum in the added flocculating agent is changed into micromolecule aluminum to be dissolved in water because of the increase of the pH value, the aluminum content of the factory water is increased, and CO is put in the water production process2Can reduce the pH value of raw water and reduce the aluminum content of factory water.
This example delivers CO to the raw water mains via a water injector2And the subsequent mixing of chlorine and PAFC reduces the pH value of the raw water and the aluminum content of the factory water. In the embodiment, CO is put in the front end of a raw water main pipe2The tail end of the chlorine-mixed raw water main pipe, the air floatation tank and the delivery end are respectively provided with a water quality monitoring point, the pH value and the aluminum content of water at the position can be monitored in real time, and therefore CO is controlled2The pH value and the aluminum content of the factory water are controlled in real time according to the adding amount of the gas cylinder.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts ripe bolt, rivet among the prior art. The conventional means such as welding, machines, parts and equipment are of the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the details are not described.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or through an intermediary, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
Claims (5)
1. A system for controlling the pH value of raw water in a water plant and the aluminum content of the discharged water is characterized by comprising a raw water main pipe and CO2The system comprises a feeding device, a water ejector, a liquid chlorine feeding device, a raw water distribution well, an air floatation tank, a horizontal sedimentation tank and a monitoring system, wherein the front end of a raw water main pipe is communicated with a reservoir, the flow direction of raw water is a subsequent necessary production flow entering a water plant through the flow direction of the raw water distribution well along the raw water main pipe to the horizontal sedimentation tank and the air floatation tank, and CO is introduced into the water plant2The feeding device and the liquid chlorine feeding device are communicated with the raw water main pipe through a water ejector.
2. The system as claimed in claim 1, wherein the CO is selected from the group consisting of CO, pH, and Al2The feeding device comprises a carbon dioxide gas cylinder, a connecting pipeline and a flow controller, the carbon dioxide gas cylinder is connected with the water injector through the flow controller and a communicating pipeline, and the flow controller can control the air outlet flow of the carbon dioxide gas cylinder.
3. The system as claimed in claim 1, wherein the CO is selected from the group consisting of CO, pH, and Al2The throwing device and the water ejector are communicated with the rear end of the raw water main pipe, and the distance between the position of the water ejector and the horizontal flow sedimentation tank and the distance between the position of the water ejector and the air floatation tank are less than 20 meters.
4. The system as claimed in claim 1, wherein the CO is selected from the group consisting of CO, pH, and Al2The throwing device and the water ejector are communicated with the front end of the raw water main pipe, and the distance between the position of the water ejector and the horizontal flow sedimentation tank and the distance between the position of the water ejector and the air floatation tank are larger than 400 meters.
5. The system as claimed in claim 1, wherein the monitoring system comprises a detection device, and CO is fed to the front end of the raw water main pipe2And the tail end of the chlorine-treated raw water main pipe, a first water quality monitoring point, a second water quality monitoring point, a third water quality monitoring point and a fourth water quality monitoring point are respectively arranged at the air floatation tank and the delivery end, the detection device is arranged at the first water quality monitoring point, the second water quality monitoring point, the third water quality monitoring point and the fourth water quality monitoring point, and a detection matched laboratory is further arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021874889.3U CN213475616U (en) | 2020-09-01 | 2020-09-01 | Control system for pH value of raw water of water works and aluminum content of leaving water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021874889.3U CN213475616U (en) | 2020-09-01 | 2020-09-01 | Control system for pH value of raw water of water works and aluminum content of leaving water |
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| CN213475616U true CN213475616U (en) | 2021-06-18 |
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| CN202021874889.3U Active CN213475616U (en) | 2020-09-01 | 2020-09-01 | Control system for pH value of raw water of water works and aluminum content of leaving water |
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