CN207435128U - A kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device - Google Patents
A kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device Download PDFInfo
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- CN207435128U CN207435128U CN201721486012.5U CN201721486012U CN207435128U CN 207435128 U CN207435128 U CN 207435128U CN 201721486012 U CN201721486012 U CN 201721486012U CN 207435128 U CN207435128 U CN 207435128U
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- dosing
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- thermal power
- neutralization pond
- waste water
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Abstract
The utility model is related to pH adjusting apparatus, specifically a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device.Including alkali medicine liquid tank, sour medicine liquid tank, dosing pump, roots blower and circulating pump；Dosing pump arrival end is connected with alkali medicine liquid tank and sour medicine liquid tank, and the port of export is connected with one end that dosing is responsible for, and the other end of dosing supervisor is connected with the more dosing branch pipes being spaced apart in the top of thermal power plant's neutralization pond；The discharge pipe of roots blower is arranged on the bottom of thermal power plant's neutralization pond, and more aeration tubes are connected on discharge pipe；The arrival end of circulating pump is plugged in the bottom of thermal power plant's neutralization pond, the port of export of circulating pump, which is sequentially connected, is connected with pH on-line detectors and waste water three-way magnetic valve, one of outlet of waste water three-way magnetic valve is connected with thermal power plant neutralization pond, another outlet is connected with discharge of wastewater pipeline.The utility model operates steadily, dosing precision is high, labor intensity is low, can be automatically performed the adjusting of thermal power plant's neutralization pond wastewater pH.
Description
Technical field
The utility model is related to pH adjusting apparatus, specifically a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing is adjusted
Device.
Background technology
Waste water in thermal power plant's neutralization pond is mainly derived from chemical water manufacturing system regenerative process, including regenerated acid and alkali waste liquid,
Flushing waste water etc..At present, most of thermal power plant's neutralization pond wastewater treatments are using acid, alkali neutralization dosing, according to the pH value control of waste water
Dosage processed makes the pH value of waste water outer could be discharged to sewage treatment plant for 6~9.
The chemicals addition control of neutralization pond waste water is both referred to what online pH tables were completed by artificial acid adding or alkali at present, and at influence
The factor of reason neutralization pond waste water mainly includes：1st, acid-base neutralization reaction is nonlinear, when pH values are near 6 or 9,
Acid-base neutralization reaction generates jumping, even if adding in seldom neutralizer also results in pH value great changes；2nd, pH meter is to pH's
It measures between instrument show value and its actual value there are certain hysteresis quality, lags behind actual value more than 20 seconds.Thereby result in work
People's heavy workload, operating process is also inaccurate, and part factory is even adjusted dosing by labor measurement pH value, if grasped not
It is good, it is easy to cause the addition of alkali or acid excessive, cause the waste of alkali or acid and qualified discharge standard difficult to realize.
Utility model content
The utility model be intended to provide it is a kind of operate steadily, thermal power plant's neutralization pond that dosing precision is high, labor intensity is low gives up
Water pH Automatic Dosing regulating devices.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of thermal power plant's neutralization pond waste water
PH Automatic Dosing regulating devices, including alkali medicine liquid tank, sour medicine liquid tank, dosing pump, roots blower and circulating pump；The dosing pump
Arrival end the bottom of alkali medicine liquid tank and sour medicine liquid tank is respectively connected to by lye electromagnetic switch valve and acid solution electromagnetic switch valve,
The port of export of dosing pump is connected with one end that dosing is responsible for, and the other end of dosing supervisor is connected with more dosing branch pipes, and more add
Medicine branch pipe is evenly spaced in the top of thermal power plant's neutralization pond, be additionally provided on dosing pump by adjust the rotating speed of dosing pump with
Adjust the variable-frequency governor of its dosing speed；The discharge pipe of the roots blower is arranged on the bottom of thermal power plant's neutralization pond, is going out
Uniform intervals are connected with more aeration tubes on air hose；The arrival end of the circulating pump is plugged in the bottom of thermal power plant's neutralization pond, follows
The port of export of ring pump is connected with waste water three-way magnetic valve, is set in the port of export of circulating pump and the connecting pipeline of waste water three-way magnetic valve
There are a pH on-line detectors, one of outlet of waste water three-way magnetic valve is connected by waste water circulation pipe with thermal power plant neutralization pond
Logical, another outlet is connected with discharge of wastewater pipeline.
Preferably, the lye electromagnetic switch valve, acid solution electromagnetic switch valve, variable-frequency governor, roots blower, pH are examined online
It surveys instrument and waste water three-way magnetic valve is connected to a switch board, switch board is controlled by the gathered data of pH on-line detectors
The opening and closing being opened to lye electromagnetic switch valve, acid solution electromagnetic switch valve and roots blower of waste water three-way magnetic valve, and pass through
Variable-frequency governor controls the opening and closing of dosing pump and dosing speed.
Preferably, PID controller is equipped in the switch board.
Preferably, the described one end of waste water circulation pipe away from waste water three-way magnetic valve is arranged at the top of thermal power plant's neutralization pond simultaneously
Position away from pump entry end.
Preferably, the arrival end of one end and circulating pump away from waste water three-way magnetic valve of the waste water circulation pipe is set respectively
At the both ends of thermal power plant's neutralization pond length direction.
Advantageous effect
The utility model detects the pH, such as pH between circulating-pump outlet and waste water three-way magnetic valve by pH on-line detectors
It is up to standard, then it is directly discharged to discharge of wastewater pipeline and enters sewage treatment plant.If pH is not up to standard, then acid solution electricity is opened according to surveyed pH
Magnetic switch valve or lye electromagnetic switch valve, dosing pump and roots blower, sour liquid or alkali liquid is uniform by dosing branch pipe
In scattered addition neutralization pond, and the agitation fully reaction repeatedly under the action of aeration tube and waste water circulating pump, it is neutralized with adjusting
The pH of waste water in pond, until qualified discharge.
In the preferred embodiment of the utility model, pH on-line detectors are by circulating-pump outlet and waste water three-way magnetic valve
Between pH value pass to switch board, switch board is by obtained data, after intelligent PID is adjusted, by control signal transmission
It is accordingly opened to acid solution electromagnetic switch valve or lye electromagnetic switch valve, by control signal transmission to variable-frequency governor, by change frequency modulation
Fast device controls the rotating speed of dosing pump to control the dosage of dosing pump, so as to which more uniform and stable changes waste water in neutralization pond
pH.Using manual operation, monitoring and control is not required after this scheme, the labor intensity of worker is reduced, while improves dosing
The control accuracy of amount ensure that neutralization pond waste water steadily outer row.Pass through the improvement to adding method thereof and Computer Control Technology phase
With reference to method carry out non-linear, time lag in the control of effective control ph, medicine system is made to operate steadily, reliably.
In conclusion the utility model be it is a kind of operate steadily, thermal power plant's neutralization pond that dosing precision is high, labor intensity is low
Wastewater pH Automatic Dosing regulating device can eliminate the influence of signal lag factor, make to operate steadily to greatest extent.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
It is marked in figure：1st, alkali medicine liquid tank, 2, sour medicine liquid tank, 3, dosing pump, 4, roots blower, 5, circulating pump, 6, lye electricity
Magnetic switch valve, 7, acid solution electromagnetic switch valve, 8, dosing supervisor, 9, dosing branch pipe, 10, thermal power plant's neutralization pond, 11, frequency control
Device, 12, discharge pipe, 13, aeration tube, 14, waste water three-way magnetic valve, 15, pH on-line detectors, 16, waste water circulation pipe, 17, control
Cabinet processed.
Specific embodiment
As shown in Figure 1, a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device of the utility model, including alkali medicine
Flow container 1, sour medicine liquid tank 2, dosing pump 3, roots blower 4, circulating pump 5 and switch board 17.
The arrival end of dosing pump 3 is connected with an interface of a tee pipe fitting, other two interface point of tee pipe fitting
The bottom of alkali medicine liquid tank 1 and sour medicine liquid tank 2 is not respectively connected to by lye electromagnetic switch valve 6 and acid solution electromagnetic switch valve 7,
The deployed neutralization for being used to adjust wastewater pH in thermal power plant's neutralization pond 10 is stored in alkali medicine liquid tank 1 and sour medicine liquid tank 2 respectively
Liquid.The port of export of dosing pump 3 is connected with one end of dosing supervisor 8, and the other end of dosing supervisor 8 is connected with more dosing branch pipes
9, more dosing branch pipes 9 are evenly spaced in the top of thermal power plant's neutralization pond 10, so as to by dosing pump 3 by alkali medicine liquid tank 1
Or the neutralization liquid in sour medicine liquid tank 2 is uniformly sprayed in entire thermal power plant's neutralization pond 10, is accelerated reaction speed, is made wastewater pH equal
Even change.It is additionally provided on dosing pump 3 and adjusts the variable-frequency governor 11 of its dosing speed by adjusting the rotating speed of dosing pump 3.
Since when pH values are near 6 or 9, acid-base neutralization reaction generates jumping, also resulted in even if adding in seldom neutralizer
PH value great changes so when pH values are near 6 or 9, can suitably reduce the rotating speed of dosing pump 3, slow down dosing speed,
Avoid the waste of neutralizer.
The discharge pipe 12 of roots blower 4 is arranged on the bottom of thermal power plant's neutralization pond 10, and uniform intervals connect on discharge pipe 12
More aeration tubes 13 are connected to, in and in liquid filling process, neutralization liquid and waste water are made by the aeration effect of aeration tube 13
Uniformly mixing, so that pH variations are more uniform.
The arrival end of circulating pump 5 is plugged in the bottom of the one end along its length of thermal power plant's neutralization pond 10, the outlet of circulating pump 5
End is connected with waste water three-way magnetic valve 14, and the port of export of circulating pump 5 and the connecting pipeline of waste water three-way magnetic valve 14 are equipped with pH
On-line detector 15, one of outlet of waste water three-way magnetic valve 14 pass through waste water circulation pipe 16 and 10 phase of thermal power plant neutralization pond
Connection, and waste water circulation pipe 16 is located at the top of the 10 length direction other end of thermal power plant's neutralization pond, when passing through pH on-line detectors
When 15 wastewater pHs measured are not up to standard, waste water is constantly in recurrent state, the agitation of cyclic process current by waste water circulating pump 5
It is also beneficial to the progress of neutralization reaction.After the wastewater pH measured by pH on-line detectors 15 is up to standard, waste water can be by useless
Another outlet of water three-way magnetic valve 14 is connected with discharge of wastewater pipeline, directly arranges to sewage treatment plant.
Lye electromagnetic switch valve 6, acid solution electromagnetic switch valve 7, variable-frequency governor 11, roots blower 4, pH in the present embodiment
On-line detector 15 and waste water three-way magnetic valve 14 are connected to a switch board 17, and PID controller is equipped in switch board 17.
Switch board 17 controls being opened to and lye electromagnetic switch for waste water three-way magnetic valve 14 by the gathered data of pH on-line detectors 15
The opening and closing of valve 6, acid solution electromagnetic switch valve 7 and roots blower 4, and pass through variable-frequency governor 11 control dosing pump 3 opening and closing and
Dosing speed.The pH value measured is passed to switch board 17 by pH on-line detectors 15, and switch board 17 is passed through by obtained data
After intelligent PID is adjusted, it is first determined whether it is up to standard, it is such as up to standard, then waste water three-way magnetic valve 14 is controlled directly to drain into waste water useless
Water discharge spout road.If not up to standard, then waste water three-way magnetic valve 14 is controlled to carry out the waste water Xun Huan of thermal power plant's neutralization pond 10, is sentenced simultaneously
It is disconnected that alkali liquid or sour liquid should be added in into thermal power plant's neutralization pond 10, control corresponding lye electromagnetic switch valve 6 or acid solution electromagnetism
Switch valve 7 is opened.Then whether pH is judged close to 6 or 9, by control signal transmission to variable-frequency governor 11, by variable-frequency governor
11 control the rotating speed of motors to control the dosage of dosing pump 3.Using manual operation, monitoring and control are not required after the utility model
System, reduces the labor intensity of worker, while improves the control accuracy of dosage, ensure that neutralization pond waste water steadily outer row.
Claims (5)
1. a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device, it is characterised in that：Including alkali medicine liquid tank（1）, sour medicine
Flow container（2）, dosing pump（3）, roots blower（4）And circulating pump（5）；The dosing pump（3）Arrival end pass through lye electromagnetism
Switch valve（6）With acid solution electromagnetic switch valve（7）It is respectively connected to alkali medicine liquid tank（1）With sour medicine liquid tank（2）Bottom, dosing pump
（3）The port of export and dosing be responsible for（8）One end be connected, dosing supervisor（8）The other end be connected with more dosing branch pipes（9）,
More dosing branch pipes（9）It is evenly spaced in thermal power plant's neutralization pond（10）Top, in dosing pump（3）On be additionally provided with and pass through tune
Save dosing pump（3）Rotating speed to adjust the variable-frequency governor of its dosing speed（11）；The roots blower（4）Discharge pipe（12）
It is arranged on thermal power plant's neutralization pond（10）Bottom, in discharge pipe（12）Upper uniform intervals are connected with more aeration tubes（13）；It is described
Circulating pump（5）Arrival end be plugged in thermal power plant's neutralization pond（10）Bottom, circulating pump（5）The port of export be connected with waste water threeway
Solenoid valve（14）, circulating pump（5）The port of export and waste water three-way magnetic valve（14）Connecting pipeline be equipped with pH on-line detectors
（15）, waste water three-way magnetic valve（14）One of outlet pass through waste water circulation pipe（16）With thermal power plant's neutralization pond（10）It is connected
Logical, another outlet is connected with discharge of wastewater pipeline.
2. a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device according to claim 1, it is characterised in that：Institute
State lye electromagnetic switch valve（6）, acid solution electromagnetic switch valve（7）, variable-frequency governor（11）, roots blower（4）, pH on-line detectors
（15）And waste water three-way magnetic valve（14）It is connected to a switch board（17）, switch board（17）Pass through pH on-line detectors
（15）Gathered data control waste water three-way magnetic valve（14）Be opened to and lye electromagnetic switch valve（6）, acid solution electromagnetic switch valve
（7）And roots blower（4）Opening and closing, and pass through variable-frequency governor（11）Control dosing pump（3）Opening and closing and dosing speed.
3. a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device according to claim 2, it is characterised in that：Institute
State switch board（17）In be equipped with PID controller.
4. a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device according to claim 1, it is characterised in that：Institute
State waste water circulation pipe（16）Away from waste water three-way magnetic valve（14）One end be arranged on thermal power plant's neutralization pond（10）Top is simultaneously separate
Circulating pump（5）The position of arrival end.
5. a kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device according to claim 4, it is characterised in that：Institute
State waste water circulation pipe（16）Away from waste water three-way magnetic valve（14）One end and circulating pump（5）Arrival end be separately positioned on thermoelectricity
Factory's neutralization pond（10）The both ends of length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486012.5U CN207435128U (en) | 2017-11-09 | 2017-11-09 | A kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486012.5U CN207435128U (en) | 2017-11-09 | 2017-11-09 | A kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207435128U true CN207435128U (en) | 2018-06-01 |
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ID=62288773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721486012.5U Expired - Fee Related CN207435128U (en) | 2017-11-09 | 2017-11-09 | A kind of thermal power plant's neutralization pond wastewater pH Automatic Dosing regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207435128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731245A (en) * | 2021-09-27 | 2021-12-03 | 安庆供水集团公司 | Automatic dosing device for intelligent water plant |
-
2017
- 2017-11-09 CN CN201721486012.5U patent/CN207435128U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731245A (en) * | 2021-09-27 | 2021-12-03 | 安庆供水集团公司 | Automatic dosing device for intelligent water plant |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20201109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |